/* roulang page: index */
:root{
  --color-primary:#D9432E;
  --color-primary-hover:#B93824;
  --color-primary-soft:rgba(217,67,46,.1);
  --color-secondary:#E8C46F;
  --color-ink:#17181B;
  --color-body:#4A4E57;
  --color-bg:#F7F5F2;
  --color-surface:#FFFFFF;
  --color-line:#E5E1DA;
  --color-success:#2E7D5B;
  --color-danger:#C0392B;
  --radius-card:16px;
  --radius-img:20px;
  --radius-btn:8px;
  --radius-download:12px;
  --radius-badge:999px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(23,24,27,.06);
  --shadow-md:0 8px 24px rgba(23,24,27,.08);
  --shadow-lg:0 24px 48px rgba(23,24,27,.12);
  --ease:cubic-bezier(.16,1,.3,1);
  --container:1200px;
  --header-h:72px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Bebas Neue","Arial Narrow",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  color:var(--color-body);
  background:var(--color-bg);
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select{font-family:inherit;font-size:inherit;border:none;outline:none;background:none}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
section{position:relative}
.section-pad{padding:96px 0}
@media(max-width:1023px){.section-pad{padding:72px 0}}
@media(max-width:639px){.section-pad{padding:64px 0}.container{padding-left:20px;padding-right:20px}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-weight:600;font-size:.9375rem;line-height:1;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),opacity .2s;
  white-space:nowrap;cursor:pointer;border:1px solid transparent;
}
.btn svg{flex-shrink:0}
.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}
.btn-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md);filter:brightness(1.06)}
.btn-primary:active{transform:scale(.98);box-shadow:var(--shadow-sm)}
.btn-dark{background:var(--color-ink);color:#fff;border-color:var(--color-ink)}
.btn-dark:hover{background:#26282e;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-dark:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--color-ink);border-color:var(--color-line)}
.btn-ghost:hover{border-color:var(--color-primary);color:var(--color-primary);transform:translateY(-2px)}
.btn-lg{min-height:56px;padding:0 32px;font-size:1rem;border-radius:var(--radius-download)}
.btn-block-sm{width:100%}
@media(max-width:639px){.btn-lg{width:100%;min-height:52px}}

/* ---------- Badges / Tags ---------- */
.badge{
  display:inline-flex;align-items:center;padding:3px 12px;border-radius:var(--radius-badge);
  font-size:.75rem;font-weight:600;line-height:1.6;letter-spacing:.02em;
  background:var(--color-primary-soft);color:var(--color-primary);
}
.badge-gold{background:rgba(232,196,111,.18);color:#A07C24}
.tag{
  display:inline-block;padding:5px 14px;border-radius:var(--radius-badge);
  background:var(--color-surface);border:1px solid var(--color-line);
  font-size:.8125rem;color:var(--color-body);transition:border-color .2s,color .2s;
}
.tag:hover{border-color:var(--color-primary);color:var(--color-primary)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;height:var(--header-h);
  background:rgba(247,245,242,.85);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:border-color .3s,box-shadow .3s,background .3s;
}
.site-header.scrolled{border-bottom-color:rgba(23,24,27,.08);background:rgba(247,245,242,.92);box-shadow:0 2px 12px rgba(23,24,27,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:32px;height:32px;border-radius:50%;background:var(--color-primary);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.brand-icon svg{width:18px;height:18px}
.brand-text{font-size:1.25rem;font-weight:800;color:var(--color-ink);letter-spacing:-.02em;line-height:1.2}
.brand-badge{
  display:inline-flex;align-items:center;padding:2px 8px;margin-left:2px;
  font-size:.6875rem;font-weight:700;color:var(--color-primary);
  background:var(--color-primary-soft);border-radius:var(--radius-badge);line-height:1.5;
}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:.9375rem;font-weight:500;color:var(--color-body);
  padding:6px 0;line-height:1.6;transition:color .2s;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:4px;border-radius:2px;
  background:var(--color-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-link:hover{color:var(--color-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--color-primary)}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;width:180px;height:40px;
  padding:0 12px;border-radius:var(--radius-input);background:var(--color-surface);
  border:1px solid transparent;transition:width .25s var(--ease),border-color .2s,box-shadow .2s;
}
.search-box:focus-within{width:260px;border-color:var(--color-primary);box-shadow:0 0 0 4px rgba(217,67,46,.08)}
.search-box svg{width:16px;height:16px;color:var(--color-body);flex-shrink:0}
.search-box input{width:100%;font-size:.875rem;color:var(--color-ink);background:transparent}
.search-box input::placeholder{color:#9A9DA6}
.search-box input::-webkit-search-cancel-button{display:none}
.menu-toggle{display:none;width:40px;height:40px;border-radius:8px;align-items:center;justify-content:center;border:1px solid var(--color-line);background:var(--color-surface)}
.menu-toggle svg{width:20px;height:20px}

/* Mobile drawer */
.mobile-drawer{
  display:none;position:fixed;top:var(--header-h);right:0;bottom:0;left:0;z-index:99;
  background:var(--color-surface);padding:24px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .35s var(--ease);
  border-top:1px solid var(--color-line);
}
.mobile-drawer.open{transform:translateX(0)}
.mobile-drawer .drawer-search{display:flex;align-items:center;gap:8px;width:100%;height:44px;padding:0 14px;border-radius:10px;background:var(--color-bg);border:1px solid var(--color-line);margin-bottom:20px}
.mobile-drawer .drawer-search svg{width:16px;height:16px;color:var(--color-body)}
.mobile-drawer .drawer-search input{flex:1;font-size:.875rem;color:var(--color-ink);background:transparent}
.drawer-link{display:block;padding:14px 4px;font-size:1rem;font-weight:600;color:var(--color-ink);border-bottom:1px solid var(--color-line);transition:color .2s,padding-left .2s}
.drawer-link:hover{color:var(--color-primary);padding-left:10px}
.drawer-cta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;padding:72px 0 40px;
  background-color:var(--color-bg);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(23,24,27,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(23,24,27,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero::after{
  content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,67,46,.08),transparent 70%);
  filter:blur(160px);pointer-events:none;z-index:0;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-copy{padding:40px 0}
.hero h1{
  font-size:clamp(2.6rem,4.6vw,3.8rem);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;color:var(--color-ink);
}
.hero-divider{width:64px;height:4px;border-radius:2px;background:var(--color-primary);margin:24px 0}
.hero-sub{font-size:1.125rem;line-height:1.7;color:var(--color-body);max-width:480px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;gap:44px;flex-wrap:wrap}
.stat{display:flex;flex-direction:column;gap:2px}
.stat-num{
  font-family:var(--font-num);font-size:2rem;font-weight:800;color:var(--color-ink);line-height:1.2;
}
.stat-label{font-size:.8125rem;color:#9A9DA6;letter-spacing:.02em}
.hero-visual{position:relative;padding:20px}
.hero-backdrop{
  position:absolute;inset:0;background-size:cover;background-position:center;
  border-radius:var(--radius-img);opacity:.75;
}
.hero-backdrop::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(247,245,242,0) 0%,rgba(247,245,242,.4) 100%);border-radius:var(--radius-img)}
.hero-cover{
  position:relative;z-index:1;border-radius:var(--radius-img);overflow:hidden;
  box-shadow:var(--shadow-lg);transform:rotate(1deg);transition:transform .4s var(--ease);
}
.hero-cover:hover{transform:rotate(0) scale(1.01)}
.hero-cover img{width:100%;height:auto}
.hero-float-card{
  position:absolute;z-index:2;top:40px;right:0;
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(12px);
  border-radius:12px;padding:10px 18px;box-shadow:var(--shadow-md);
  font-size:.8125rem;font-weight:600;color:var(--color-success);
  animation:floatCard 6s ease-in-out infinite alternate;
}
.hero-float-card svg{width:16px;height:16px}
@keyframes floatCard{0%{transform:translateY(0)}100%{transform:translateY(-6px)}}
.scroll-down{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:#9A9DA6;z-index:2}
.scroll-down svg{width:20px;height:20px;animation:scrollBounce 2s ease infinite}
@keyframes scrollBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}

/* ---------- Section Header ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:48px}
.section-title{font-size:clamp(1.75rem,2.6vw,2.4rem);font-weight:700;color:var(--color-ink);letter-spacing:-.02em;line-height:1.25}
.section-sub{color:#9A9DA6;font-size:.9375rem;margin-top:6px}
.section-link{font-size:.875rem;font-weight:600;color:var(--color-primary);display:inline-flex;align-items:center;gap:6px;transition:gap .2s}
.section-link:hover{gap:10px}
@media(max-width:639px){.section-head{flex-direction:column;align-items:flex-start;gap:12px}}

/* ---------- Features carousel ---------- */
.features{background:var(--color-surface);border-top:1px solid var(--color-line);border-bottom:1px solid var(--color-line)}
.carousel-wrap{position:relative}
.carousel-arrows{display:flex;gap:10px}
.carousel-arrow{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--color-line);
  display:flex;align-items:center;justify-content:center;background:var(--color-surface);
  transition:border-color .2s,color .2s,transform .2s,box-shadow .2s;color:var(--color-body);
}
.carousel-arrow:hover{border-color:var(--color-primary);color:var(--color-primary);box-shadow:var(--shadow-sm);transform:scale(1.06)}
.carousel-arrow:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.carousel-arrow svg{width:20px;height:20px}
.carousel-viewport{overflow:hidden;margin:0 -8px;padding:8px}
.carousel-track{display:flex;gap:24px;transition:transform .5s var(--ease)}
.carousel-card{
  flex:0 0 calc(50% - 12px);max-width:calc(50% - 12px);
  background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:16px;transition:transform .4s var(--ease),box-shadow .4s var(--ease),opacity .4s;
}
.carousel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.carousel-card-img{border-radius:var(--radius-img);overflow:hidden;aspect-ratio:16/10;margin-bottom:20px;background:var(--color-bg)}
.carousel-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.carousel-card:hover .carousel-card-img img{transform:scale(1.03)}
.carousel-card h3{font-size:1.375rem;font-weight:700;color:var(--color-ink);margin-bottom:8px;letter-spacing:-.02em}
.carousel-card p{font-size:.875rem;color:var(--color-body);line-height:1.6}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:28px}
.carousel-dot{width:8px;height:8px;border-radius:50%;background:var(--color-line);transition:width .3s var(--ease),background .3s,opacity .3s}
.carousel-dot.active{width:28px;border-radius:4px;background:var(--color-primary)}
@media(max-width:1023px){
  .carousel-card{flex:0 0 calc(100% - 16px);max-width:calc(100% - 16px)}
}

/* ---------- Requirements (dark) ---------- */
.requirements{background:var(--color-ink);color:#fff}
.requirements .section-title{color:#fff}
.requirements .section-sub{color:rgba(255,255,255,.55)}
.req-center{text-align:center;margin-bottom:56px}
.req-platform-num{font-family:var(--font-num);font-size:3rem;font-weight:800;color:var(--color-secondary);line-height:1.2}
.req-platform-text{color:rgba(255,255,255,.6);font-size:.9375rem}
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.req-card{
  position:relative;background:#202226;border:1px solid transparent;
  border-radius:var(--radius-card);padding:32px 28px;overflow:hidden;
  transition:border-color .3s,transform .3s,box-shadow .3s;
}
.req-card:hover{border-color:var(--color-primary);transform:translateY(-4px);box-shadow:0 16px 32px rgba(0,0,0,.25)}
.req-card-index{
  position:absolute;top:12px;right:20px;font-family:var(--font-num);
  font-size:3.4rem;font-weight:800;color:rgba(255,255,255,.08);line-height:1;
}
.req-card h3{font-size:1.25rem;font-weight:700;color:#fff;margin-bottom:4px;display:flex;align-items:center;gap:10px}
.req-icon{width:40px;height:40px;border-radius:10px;background:rgba(217,67,46,.15);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.req-icon svg{width:20px;height:20px;color:var(--color-primary)}
.req-version{display:inline-block;margin:10px 0 18px;padding:2px 12px;border-radius:var(--radius-badge);background:rgba(255,255,255,.08);font-size:.75rem;color:rgba(255,255,255,.7)}
.req-card ul li{display:flex;align-items:flex-start;gap:10px;padding:8px 0;font-size:.875rem;color:rgba(255,255,255,.72);line-height:1.5}
.req-card ul li svg{width:16px;height:16px;color:var(--color-success);flex-shrink:0;margin-top:3px}
@media(max-width:1023px){
  .req-grid{grid-template-columns:1fr 1fr}
  .req-card:first-child{grid-column:1/-1}
}
@media(max-width:639px){.req-grid{grid-template-columns:1fr}}

/* ---------- Reviews ---------- */
.reviews{background:var(--color-bg)}
.reviews .section-note{font-size:.8125rem;color:#9A9DA6}
.review-wall{columns:3;column-gap:16px}
.review-card{
  break-inside:avoid;margin-bottom:16px;background:var(--color-surface);
  border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:48px;height:48px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--color-bg)}
.review-avatar img{width:100%;height:100%;object-fit:cover}
.review-name{font-weight:600;color:var(--color-ink);font-size:.9375rem}
.review-source{font-size:.75rem;color:#9A9DA6}
.review-stars{display:flex;gap:2px;margin-bottom:12px}
.review-stars svg{width:16px;height:16px;color:var(--color-secondary);fill:var(--color-secondary)}
.review-stars svg.empty{color:var(--color-line);fill:var(--color-line)}
.review-text{font-size:.9375rem;line-height:1.75;color:var(--color-body);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.review-badge{display:inline-block;margin-top:12px;font-size:.75rem;font-weight:600;color:var(--color-primary);background:var(--color-primary-soft);padding:3px 10px;border-radius:var(--radius-badge)}
@media(max-width:1023px){.review-wall{columns:2}}
@media(max-width:639px){.review-wall{columns:1}}

/* ---------- News / CMS ---------- */
.news{background:var(--color-surface)}
.news-card{
  display:flex;gap:16px;background:var(--color-surface);
  border:1px solid var(--color-line);border-radius:var(--radius-card);
  padding:16px;margin-bottom:16px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(217,67,46,.3)}
.news-thumb{width:120px;height:90px;border-radius:var(--radius-card);overflow:hidden;flex-shrink:0;background:var(--color-bg)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-body{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}
.news-body .badge{align-self:flex-start;margin-bottom:6px}
.news-body h3{
  font-size:1.125rem;font-weight:700;color:var(--color-ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:color .2s;line-height:1.5;letter-spacing:-.01em;
}
.news-body h3:hover{color:var(--color-primary)}
.news-desc{font-size:.8125rem;color:var(--color-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.6;margin-top:2px}
.news-meta{display:flex;align-items:center;gap:8px;font-size:.75rem;color:#9A9DA6;margin-top:6px;font-family:var(--font-num)}
.news-meta .dot{color:var(--color-line)}
.news-empty{
  border:2px dashed var(--color-line);border-radius:var(--radius-card);
  padding:48px 24px;text-align:center;color:#9A9DA6;background:var(--color-bg);
}
.news-empty svg{width:32px;height:32px;margin-bottom:12px;color:var(--color-line)}
.news-empty p{font-size:.9375rem}
@media(max-width:639px){
  .news-card{flex-direction:column}
  .news-thumb{width:100%;height:160px}
}

/* ---------- FAQ ---------- */
.faq{background:var(--color-bg)}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px}
.faq-item{
  background:var(--color-surface);border:1px solid var(--color-line);
  border-radius:var(--radius-card);overflow:hidden;transition:box-shadow .3s,border-color .3s;
}
.faq-item:hover{border-color:rgba(217,67,46,.25);box-shadow:var(--shadow-sm)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;user-select:none;
}
.faq-q h4{font-size:1.125rem;font-weight:600;color:var(--color-ink);letter-spacing:-.01em;line-height:1.5}
.faq-icon{width:28px;height:28px;border-radius:50%;background:var(--color-bg);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .3s,transform .3s;color:var(--color-body)}
.faq-item.open .faq-icon{background:var(--color-primary);color:#fff;transform:rotate(45deg)}
.faq-icon svg{width:14px;height:14px}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s var(--ease),padding .3s var(--ease);
  padding:0 24px;
}
.faq-item.open .faq-a{max-height:320px;padding:0 24px 24px}
.faq-a-inner{border-left:2px solid var(--color-primary);background:var(--color-bg);padding:16px 20px;border-radius:0 12px 12px 0;font-size:.9375rem;line-height:1.75;color:var(--color-body)}
@media(max-width:1023px){.faq-grid{grid-template-columns:1fr}}

/* ---------- CTA ---------- */
.cta-section{
  background:linear-gradient(135deg,var(--color-primary) 0%,#C84435 60%,#B93824 100%);
  color:#fff;text-align:center;
}
.cta-section::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-section .section-title{color:#fff;font-size:clamp(2rem,3.4vw,3rem)}
.cta-section p{color:rgba(255,255,255,.85);font-size:1.0625rem;max-width:560px;margin:16px auto 40px}
.cta-buttons{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.cta-buttons .btn{
  width:200px;height:56px;border-radius:var(--radius-download);font-size:1rem;position:relative;overflow:hidden;
}
.cta-buttons .btn::after{
  content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);
  transition:left .3s var(--ease);
}
.cta-buttons .btn:hover::after{left:100%}
.cta-buttons .btn-white{background:#fff;color:var(--color-primary);border-color:#fff}
.cta-buttons .btn-white:hover{background:#f8f5f2;border-color:#f8f5f2}
.cta-agree{font-size:.8125rem;color:rgba(255,255,255,.6);margin-top:24px}
.cta-agree a{text-decoration:underline;color:rgba(255,255,255,.85)}
.cta-agree a:hover{color:#fff}

/* ---------- Footer ---------- */
.site-footer{background:var(--color-ink);color:#fff;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1.2fr 1.4fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;flex-direction:column;gap:16px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{color:rgba(255,255,255,.6);font-size:.875rem;line-height:1.7;max-width:260px}
.footer-col h4{font-size:.9375rem;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,.6);font-size:.875rem;transition:color .2s,padding-left .2s}
.footer-col ul a:hover{color:var(--color-primary);padding-left:4px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags a{display:inline-block;padding:5px 14px;border-radius:var(--radius-badge);background:rgba(255,255,255,.06);color:rgba(255,255,255,.7);font-size:.8125rem;transition:background .2s,color .2s}
.footer-tags a:hover{background:rgba(217,67,46,.2);color:#fff}
.footer-col .footer-meta{color:rgba(255,255,255,.55);font-size:.8125rem;line-height:2}
.footer-col .footer-meta a{color:rgba(255,255,255,.7)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;color:rgba(255,255,255,.4);font-size:.8125rem}
.footer-bottom a{color:rgba(255,255,255,.6);transition:color .2s}
.footer-bottom a:hover{color:#fff}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:639px){.footer-grid{grid-template-columns:1fr;gap:32px}}

/* ---------- Reveal Animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-float-card{animation:none}
  .scroll-down svg{animation:none}
  .carousel-track{transition:none}
}

/* ---------- Responsive Header ---------- */
@media(max-width:1260px){
  .main-nav{gap:18px}
  .nav-actions{gap:8px}
}
@media(max-width:1023px){
  :root{--header-h:56px}
  .main-nav{display:none}
  .nav-actions .search-box{display:none}
  .nav-actions .btn-ghost{display:none}
  .menu-toggle{display:inline-flex}
  .mobile-drawer{display:block}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero{padding:48px 0 56px}
  .hero-copy{padding:24px 0 0}
  .hero-visual{order:2;padding:0}
  .scroll-down{display:none}
}
@media(max-width:639px){
  .hero h1{font-size:2rem}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:28px}
  .cta-buttons{flex-direction:column;align-items:center}
  .cta-buttons .btn{width:100%}
}

/* roulang page: category1 */
:root {
  --color-primary: #D9432E;
  --color-primary-hover: #B93824;
  --color-primary-soft: rgba(217, 67, 46, .1);
  --color-secondary: #E8C46F;
  --color-ink: #17181B;
  --color-body: #4A4E57;
  --color-bg: #F7F5F2;
  --color-surface: #FFFFFF;
  --color-line: #E5E1DA;
  --color-success: #2E7D5B;
  --radius-card: 16px;
  --radius-img: 20px;
  --radius-btn: 8px;
  --radius-xl-btn: 12px;
  --radius-badge: 999px;
  --radius-input: 10px;
  --shadow-sm: 0 1px 2px rgba(23, 24, 27, .06);
  --shadow-md: 0 8px 24px rgba(23, 24, 27, .08);
  --shadow-lg: 0 24px 48px rgba(23, 24, 27, .12);
  --ease: cubic-bezier(.16, 1, .3, 1);
  --container: 1200px;
  --font-cn: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  font-size: 1rem;
  line-height: 1.8;
  letter-spacing: .01em;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; outline: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { color: var(--color-ink); line-height: 1.3; letter-spacing: -.02em; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ========== Header / Nav ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 242, .85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 4px 20px rgba(23, 24, 27, .04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(217, 67, 46, .28);
}
.brand-icon svg { width: 18px; height: 18px; stroke: #fff; }
.brand-text {
  font-size: 1.25rem; font-weight: 800; color: var(--color-ink);
  letter-spacing: -.02em;
}
.brand-badge {
  font-size: .75rem; font-weight: 600; color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 2px 10px; border-radius: var(--radius-badge);
}
.main-nav {
  display: flex; align-items: center; gap: 26px;
}
.main-nav a {
  position: relative;
  font-size: .9375rem; font-weight: 500; color: var(--color-body);
  padding: 6px 0;
  transition: color .2s var(--ease);
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav a::after {
  content: '';
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 4px; border-radius: 2px;
  background: var(--color-primary);
  transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active { color: var(--color-primary); }
.main-nav a.active::after { transform: scaleX(1); }

.header-actions {
  display: flex; align-items: center; gap: 12px; flex-shrink: 0;
}
.search-box {
  position: relative;
  width: 180px;
  transition: width .2s var(--ease);
}
.search-box:focus-within { width: 260px; }
.search-box svg {
  position: absolute; left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px; stroke: #9a9ea8;
  pointer-events: none;
}
.search-box input {
  width: 100%; height: 38px;
  border: 1px solid transparent;
  border-radius: var(--radius-input);
  background: var(--color-surface);
  padding: 0 14px 0 36px;
  font-size: .875rem; color: var(--color-ink);
  box-shadow: var(--shadow-sm);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.search-box input::placeholder { color: #9a9ea8; }
.search-box input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(217, 67, 46, .1);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 38px; padding: 0 18px;
  border-radius: var(--radius-btn);
  font-size: .875rem; font-weight: 600;
  transition: all .2s var(--ease);
}
.btn:active { transform: scale(.98); }
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.btn-sub {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
}
.btn-sub:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(217, 67, 46, .25);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(217, 67, 46, .3);
}
.btn-dark {
  background: var(--color-ink);
  color: #fff;
}
.btn-dark:hover {
  background: #2a2c31;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn svg { width: 16px; height: 16px; }
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  align-items: center; justify-content: center;
}
.menu-toggle svg { width: 18px; height: 18px; stroke: var(--color-ink); }

/* ========== Mobile Nav Drawer ========== */
.mobile-drawer {
  display: none;
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 200;
  background: var(--color-surface);
  padding: 24px;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform .4s var(--ease);
}
.mobile-drawer.open { transform: translateX(0); }
.drawer-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.drawer-close { width: 40px; height: 40px; border-radius: var(--radius-btn); border: 1px solid var(--color-line); display: flex; align-items: center; justify-content: center; }
.drawer-nav { display: flex; flex-direction: column; gap: 8px; }
.drawer-nav a {
  font-size: 1.125rem; font-weight: 600; color: var(--color-ink);
  padding: 14px 16px; border-radius: var(--radius-card);
  transition: all .2s var(--ease);
}
.drawer-nav a:hover { background: var(--color-primary-soft); color: var(--color-primary); }
.drawer-nav a.active { background: var(--color-primary-soft); color: var(--color-primary); }
.drawer-search { margin-top: 24px; }
.drawer-search input {
  width: 100%; height: 44px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-input);
  padding: 0 14px;
  font-size: .9375rem;
}
.drawer-footer { margin-top: auto; padding-top: 24px; font-size: .8125rem; color: #9a9ea8; }

/* ========== Hero ========== */
.category-hero {
  position: relative;
  padding: 96px 0 64px;
  overflow: hidden;
  background: var(--color-bg);
}
.category-hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(23, 24, 27, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 24, 27, .04) 1px, transparent 1px);
  background-size: 56px 56px;
}
.category-hero::after {
  content: '';
  position: absolute; top: -120px; right: -80px;
  width: 420px; height: 420px;
  background: var(--color-primary);
  opacity: .07;
  border-radius: 50%;
  filter: blur(160px);
}
.hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: .8125rem; font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 20px;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}
.hero-title {
  font-size: clamp(2.2rem, 4.2vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-ink);
  margin-bottom: 16px;
}
.hero-title em {
  font-style: normal;
  color: var(--color-primary);
}
.hero-divider {
  width: 64px; height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin: 20px 0;
}
.hero-desc {
  font-size: 1.0625rem;
  color: var(--color-body);
  max-width: 480px;
  line-height: 1.8;
}
.hero-actions {
  display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap;
}
.hero-actions .btn { height: 48px; padding: 0 28px; font-size: .9375rem; }
.hero-stats {
  display: flex; gap: 36px; margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--color-line);
}
.stat-item .stat-num {
  font-family: var(--font-num);
  font-size: 1.875rem; font-weight: 800;
  color: var(--color-ink);
  line-height: 1.2;
}
.stat-item .stat-num span { font-size: 1rem; color: var(--color-primary); }
.stat-item .stat-label {
  font-size: .8125rem; color: #9a9ea8;
  margin-top: 4px;
}
.hero-visual {
  position: relative;
}
.hero-visual .hero-bg {
  position: absolute; inset: 0;
  border-radius: var(--radius-img);
  overflow: hidden;
}
.hero-visual .hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual .hero-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(23,24,27,.1) 0%, rgba(23,24,27,.02) 100%);
}
.hero-cover {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.hero-cover img { width: 100%; height: 100%; object-fit: cover; }
.float-card {
  position: absolute;
  top: 24px; right: -20px;
  background: var(--color-surface);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 12px 18px;
  display: flex; align-items: center; gap: 10px;
  font-size: .8125rem; font-weight: 600;
  color: var(--color-ink);
  animation: float 6s ease-in-out infinite alternate;
}
.float-card svg {
  width: 18px; height: 18px;
  stroke: var(--color-success);
}
@keyframes float {
  0% { transform: translateY(-6px); }
  100% { transform: translateY(6px); }
}
.scroll-indicator {
  position: absolute;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 36px;
  border: 2px solid rgba(23,24,27,.08);
  border-radius: 12px;
  display: flex; justify-content: center;
  padding-top: 6px;
  animation: scrollDown 2s ease-in-out infinite;
}
.scroll-indicator::before {
  content: '';
  width: 4px; height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%, 100% { transform: translate(-50%, 0); opacity: .7; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}
@keyframes scrollDot {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(8px); opacity: .4; }
}

/* ========== Timeline Section ========== */
.timeline-section {
  padding: 96px 0;
  background: var(--color-surface);
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section-head .section-sub {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.section-head p {
  font-size: .9375rem;
  color: var(--color-body);
  line-height: 1.8;
}
.timeline {
  position: relative;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary-soft), var(--color-primary), var(--color-primary-soft));
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 56px;
  width: 100%;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: 50%; top: 32px;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  background: var(--color-primary);
  border: 3px solid var(--color-surface);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-primary-soft);
  z-index: 2;
}
.timeline-card {
  width: calc(50% - 48px);
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 28px;
  border: 1px solid var(--color-line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.timeline-item:nth-child(odd) .timeline-card {
  margin-right: auto;
}
.timeline-item:nth-child(even) .timeline-card {
  margin-left: auto;
}
.timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.timeline-step {
  display: inline-block;
  font-family: var(--font-num);
  font-size: .875rem; font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 3px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 12px;
}
.timeline-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.timeline-card p {
  font-size: .9375rem;
  color: var(--color-body);
  line-height: 1.75;
  margin-bottom: 16px;
}
.timeline-media {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.timeline-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s var(--ease);
}
.timeline-card:hover .timeline-media img { transform: scale(1.03); }

/* ========== Login Methods ========== */
.methods-section {
  padding: 96px 0;
  background: var(--color-bg);
  position: relative;
}
.methods-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(23, 24, 27, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 24, 27, .03) 1px, transparent 1px);
  background-size: 56px 56px;
}
.methods-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.method-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  position: relative;
  overflow: hidden;
}
.method-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 80px; height: 80px;
  background: var(--color-primary);
  opacity: .04;
  border-radius: 0 0 0 80px;
}
.method-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}
.method-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.method-icon svg {
  width: 24px; height: 24px;
  stroke: var(--color-primary);
}
.method-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.method-card p {
  font-size: .9375rem;
  color: var(--color-body);
  line-height: 1.75;
  margin-bottom: 16px;
}
.method-tags {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.method-tags span {
  font-size: .8125rem;
  color: var(--color-body);
  background: var(--color-bg);
  padding: 4px 12px;
  border-radius: var(--radius-badge);
}

/* ========== FAQ ========== */
.faq-section {
  padding: 96px 0;
  background: var(--color-surface);
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-bg);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-line);
  overflow: hidden;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  gap: 16px;
  cursor: pointer;
}
.faq-q h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  flex: 1;
}
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.faq-icon svg { width: 14px; height: 14px; stroke: var(--color-ink); transition: transform .3s var(--ease); }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--color-primary); border-color: var(--color-primary); }
.faq-item.open .faq-icon svg { stroke: #fff; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease);
}
.faq-a-inner {
  padding: 0 24px 20px;
  border-left: 2px solid var(--color-primary);
  margin: 0 24px 20px;
  background: var(--color-surface);
  border-radius: 0 12px 12px 0;
}
.faq-a p {
  font-size: .9375rem;
  color: var(--color-body);
  line-height: 1.75;
  padding: 16px 0 0;
}

/* ========== CTA ========== */
.cta-section {
  padding: 96px 0;
  background: var(--color-ink);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 56px 56px;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -160px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 300px;
  background: var(--color-primary);
  opacity: .12;
  border-radius: 50%;
  filter: blur(140px);
}
.cta-inner {
  position: relative; z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.75rem, 2.8vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-inner p {
  color: rgba(255,255,255,.75);
  font-size: 1rem;
  margin-bottom: 36px;
  line-height: 1.8;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-buttons .btn {
  width: 200px; height: 56px;
  font-size: 1rem;
  border-radius: var(--radius-xl-btn);
  position: relative;
  overflow: hidden;
}
.cta-buttons .btn::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.25), transparent);
  transition: left .4s var(--ease);
}
.cta-buttons .btn:hover::after { left: 100%; }
.cta-note {
  margin-top: 24px;
  font-size: .8125rem;
  color: rgba(255,255,255,.5);
}
.cta-note a {
  color: rgba(255,255,255,.7);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.cta-note a:hover { color: #fff; }

/* ========== Footer ========== */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,.7);
  padding: 72px 0 0;
  font-size: .875rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr 1fr .9fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand p {
  font-size: .875rem;
  line-height: 1.75;
  color: rgba(255,255,255,.55);
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a {
  color: rgba(255,255,255,.55);
  font-size: .875rem;
  transition: color .2s var(--ease);
}
.footer-col ul a:hover { color: var(--color-primary); }
.footer-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.footer-tags a {
  display: inline-block;
  font-size: .8125rem;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.6);
  padding: 5px 14px;
  border-radius: var(--radius-badge);
  transition: all .2s var(--ease);
}
.footer-tags a:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}
.footer-meta {
  display: flex; flex-direction: column; gap: 10px;
  font-size: .8125rem;
  color: rgba(255,255,255,.45);
}
.footer-meta a { color: rgba(255,255,255,.6); }
.footer-meta a:hover { color: var(--color-primary); }
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: .8125rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--color-primary); }

/* ========== Animations ========== */
.section-animate {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.section-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1023px) {
  .main-nav { display: none; }
  .header-actions .search-box { display: none; }
  .header-actions .btn-sub { display: none; }
  .menu-toggle { display: flex; }
  .mobile-drawer { display: flex; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual { max-width: 560px; margin: 0 auto; width: 100%; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .timeline::before { left: 24px; }
  .timeline-dot { left: 24px; }
  .timeline-card {
    width: calc(100% - 64px);
    margin-left: 64px !important;
    margin-right: 0 !important;
  }
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
  .header-inner { height: 56px; }
  .brand-badge { display: none; }
  .category-hero { padding: 64px 0 48px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .methods-grid { grid-template-columns: 1fr; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-buttons .btn { width: 100%; max-width: 280px; }
  .timeline-card { padding: 20px; }
  .section-head { margin-bottom: 48px; }
  .float-card { right: 8px; }
}

@media (max-width: 639px) {
  .container { padding: 0 20px; }
  .timeline-section, .methods-section, .faq-section, .cta-section { padding: 64px 0; }
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .btn-dark { border: 2px solid rgba(255,255,255,.15); }
  .timeline-card p { font-size: .875rem; }
  .timeline-media { aspect-ratio: 16/9; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* roulang page: article */
:root {
      --color-primary: #D9432E;
      --color-primary-hover: #B93824;
      --color-primary-soft: rgba(217, 67, 46, .1);
      --color-secondary: #E8C46F;
      --color-ink: #17181B;
      --color-body: #4A4E57;
      --color-bg: #F7F5F2;
      --color-surface: #FFFFFF;
      --color-line: #E5E1DA;
      --color-success: #2E7D5B;
      --radius-card: 16px;
      --radius-image: 20px;
      --radius-btn: 8px;
      --radius-badge: 999px;
      --radius-input: 10px;
      --shadow-sm: 0 1px 2px rgba(23, 24, 27, .06);
      --shadow-md: 0 8px 24px rgba(23, 24, 27, .08);
      --shadow-lg: 0 24px 48px rgba(23, 24, 27, .12);
      --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
      --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
      --ease: cubic-bezier(.16, 1, .3, 1);
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-sans);
      background: var(--color-bg);
      color: var(--color-body);
      font-size: 1rem;
      line-height: 1.8;
      letter-spacing: .01em;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }
    button {
      font-family: inherit;
      cursor: pointer;
    }
    input {
      font-family: inherit;
    }
    ul, ol {
      list-style: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 42px;
      padding: 0 22px;
      border-radius: var(--radius-btn);
      font-size: .9375rem;
      font-weight: 600;
      line-height: 1;
      border: 1px solid transparent;
      transition: all .2s var(--ease);
      white-space: nowrap;
    }
    .btn svg {
      width: 16px;
      height: 16px;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--color-primary-hover);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .btn-primary:active {
      transform: scale(.98);
    }
    .btn-primary:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }
    .btn-ghost {
      background: transparent;
      color: var(--color-ink);
      border-color: var(--color-line);
    }
    .btn-ghost:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
    }
    .btn-ghost:active {
      transform: scale(.98);
    }
    .btn-dark {
      background: var(--color-ink);
      color: #fff;
    }
    .btn-dark:hover {
      background: #2a2b2f;
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }
    .btn-sm {
      height: 38px;
      padding: 0 18px;
      font-size: .875rem;
    }
    .btn-text {
      background: transparent;
      color: var(--color-primary);
      border: 1px solid transparent;
      padding: 0 8px;
    }
    .btn-text:hover {
      color: var(--color-primary-hover);
      text-decoration: underline;
      text-underline-offset: 4px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(247, 245, 242, .85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid transparent;
      transition: border-color .3s ease, box-shadow .3s ease;
    }
    .site-header.scrolled {
      border-bottom-color: var(--color-line);
      box-shadow: 0 4px 20px rgba(23, 24, 27, .04);
    }
    .header-inner {
      display: flex;
      align-items: center;
      gap: 32px;
      height: 72px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      flex-shrink: 0;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      flex-shrink: 0;
    }
    .brand-icon svg {
      width: 18px;
      height: 18px;
    }
    .brand-text {
      font-size: 1.125rem;
      font-weight: 800;
      color: var(--color-ink);
      letter-spacing: -.02em;
    }
    .brand-badge {
      font-size: .6875rem;
      font-weight: 600;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      padding: 3px 8px;
      border-radius: var(--radius-badge);
      white-space: nowrap;
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 28px;
      flex: 1;
    }
    .nav-link {
      position: relative;
      font-size: .9375rem;
      font-weight: 500;
      color: var(--color-ink);
      padding: 26px 0;
      transition: color .2s ease;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 16px;
      width: 0;
      height: 4px;
      border-radius: 2px;
      background: var(--color-primary);
      transition: width .3s var(--ease);
    }
    .nav-link:hover {
      color: var(--color-primary);
    }
    .nav-link:hover::after,
    .nav-link.active::after {
      width: 24px;
    }
    .nav-link.active {
      color: var(--color-primary);
      font-weight: 600;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .search-wrap {
      position: relative;
      width: 180px;
      transition: width .2s var(--ease);
    }
    .search-wrap:focus-within {
      width: 260px;
    }
    .search-icon {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      width: 15px;
      height: 15px;
      color: #8b8e96;
      pointer-events: none;
    }
    .search-input {
      width: 100%;
      height: 38px;
      border: 1px solid transparent;
      background: rgba(255, 255, 255, .7);
      border-radius: var(--radius-input);
      padding: 0 12px 0 34px;
      font-size: .8125rem;
      color: var(--color-ink);
      outline: none;
      transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
    }
    .search-input::placeholder {
      color: #a0a3aa;
    }
    .search-input:focus {
      border-color: var(--color-primary);
      background: #fff;
      box-shadow: 0 0 0 3px var(--color-primary-soft);
    }

    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border: 1px solid var(--color-line);
      background: transparent;
      border-radius: 8px;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      transition: border-color .2s;
    }
    .nav-toggle:hover {
      border-color: var(--color-primary);
    }
    .nav-toggle span {
      width: 18px;
      height: 2px;
      background: var(--color-ink);
      border-radius: 2px;
      transition: transform .3s var(--ease), opacity .3s var(--ease), background .2s;
    }
    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    .article-page {
      padding: 48px 0 88px;
      min-height: 70vh;
    }
    .article-page > .container {
      max-width: 900px;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: .8125rem;
      color: #8b8e96;
      margin-bottom: 32px;
    }
    .breadcrumb a {
      color: #8b8e96;
      transition: color .2s;
    }
    .breadcrumb a:hover {
      color: var(--color-primary);
    }
    .breadcrumb-sep {
      color: #c0c3c9;
    }
    .breadcrumb-current {
      color: var(--color-primary);
      font-weight: 500;
    }

    .article-header {
      margin-bottom: 28px;
    }
    .article-title {
      font-size: 2.25rem;
      font-weight: 800;
      line-height: 1.3;
      letter-spacing: -.02em;
      color: var(--color-ink);
      margin-bottom: 20px;
      word-break: break-word;
    }
    .article-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: .875rem;
      color: #8b8e96;
    }
    .meta-date {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--color-ink);
      font-family: var(--font-num);
      font-weight: 600;
    }
    .meta-date svg {
      width: 14px;
      height: 14px;
      color: #8b8e96;
    }
    .meta-dot {
      color: #c0c3c9;
    }
    .meta-source {
      color: #6b6e75;
    }
    .meta-read {
      color: #6b6e75;
    }
    .read-num {
      font-family: var(--font-num);
      font-weight: 600;
      color: var(--color-ink);
    }
    .tag-chip {
      font-size: .75rem;
      font-weight: 600;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      padding: 4px 12px;
      border-radius: var(--radius-badge);
    }

    .article-cover {
      margin-bottom: 36px;
      border-radius: var(--radius-image);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      aspect-ratio: 16 / 9;
      background: linear-gradient(135deg, #e9e4dc, #d9d2c8);
    }
    .article-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .cms-article-body {
      max-width: 720px;
      margin: 0 auto;
      font-size: 1.0625rem;
      line-height: 1.85;
      letter-spacing: .01em;
      color: var(--color-body);
      padding-bottom: 16px;
    }
    .cms-article-body p {
      margin-bottom: 1.6em;
    }
    .cms-article-body h2 {
      position: relative;
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-ink);
      margin: 2.2em 0 .8em;
      padding-left: 44px;
      line-height: 1.4;
    }
    .cms-article-body h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: .42em;
      width: 32px;
      height: 4px;
      border-radius: 2px;
      background: var(--color-primary);
    }
    .cms-article-body h3 {
      position: relative;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--color-ink);
      margin: 1.8em 0 .6em;
      padding-left: 32px;
      line-height: 1.45;
    }
    .cms-article-body h3::before {
      content: '';
      position: absolute;
      left: 0;
      top: .48em;
      width: 20px;
      height: 3px;
      border-radius: 2px;
      background: var(--color-primary);
    }
    .cms-article-body ul,
    .cms-article-body ol {
      margin: 0 0 1.6em 1.4em;
    }
    .cms-article-body ul li {
      list-style: disc;
    }
    .cms-article-body ol li {
      list-style: decimal;
    }
    .cms-article-body li {
      margin-bottom: .5em;
    }
    .cms-article-body a {
      color: var(--color-primary);
      text-decoration: underline;
      text-underline-offset: 4px;
      text-decoration-color: rgba(217, 67, 46, .3);
      transition: text-decoration-color .2s;
    }
    .cms-article-body a:hover {
      text-decoration-color: var(--color-primary);
    }
    .cms-article-body blockquote {
      margin: 2em 0;
      padding: 24px;
      background: #F1EDE7;
      border-left: 4px solid var(--color-primary);
      border-radius: 0 12px 12px 0;
      font-size: 1.05em;
      color: var(--color-ink);
    }
    .cms-article-body blockquote p:last-child {
      margin-bottom: 0;
    }
    .cms-article-body img {
      max-width: 100%;
      border-radius: var(--radius-image);
      box-shadow: var(--shadow-sm);
      margin: 2em 0;
    }
    .cms-article-body figure {
      margin: 2em 0;
    }
    .cms-article-body figcaption {
      text-align: center;
      font-size: .8125rem;
      color: #8b8e96;
      margin-top: 8px;
    }
    .cms-article-body pre {
      background: var(--color-ink);
      color: #F7F5F2;
      padding: 20px;
      border-radius: 12px;
      overflow-x: auto;
      line-height: 1.6;
      font-size: .925rem;
      margin: 2em 0;
    }
    .cms-article-body code {
      font-family: "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
    }
    .cms-article-body pre code {
      background: none;
      padding: 0;
    }
    .cms-article-body table {
      width: 100%;
      border-collapse: collapse;
      margin: 2em 0;
      font-size: .9375rem;
    }
    .cms-article-body th,
    .cms-article-body td {
      padding: 12px 16px;
      border-bottom: 1px solid var(--color-line);
      text-align: left;
    }
    .cms-article-body th {
      background: var(--color-primary-soft);
      color: var(--color-ink);
      font-weight: 600;
    }

    .article-tags {
      max-width: 720px;
      margin: 32px auto 0;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .tag {
      display: inline-block;
      font-size: .8125rem;
      color: #6b6e75;
      background: #EDEAE4;
      padding: 6px 14px;
      border-radius: var(--radius-badge);
      transition: all .2s;
    }
    .tag:hover {
      color: var(--color-primary);
      background: var(--color-primary-soft);
    }

    .article-pager {
      max-width: 720px;
      margin: 40px auto 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .pager-link {
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding: 20px 24px;
      background: var(--color-surface);
      border-radius: var(--radius-card);
      border: 1px solid var(--color-line);
      transition: all .25s var(--ease);
    }
    .pager-link:hover {
      border-color: var(--color-primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .pager-link.pager-next {
      text-align: right;
      align-items: flex-end;
    }
    .pager-label {
      font-size: .75rem;
      color: #8b8e96;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .pager-title {
      font-size: .9375rem;
      font-weight: 600;
      color: var(--color-ink);
      transition: color .2s;
    }
    .pager-link:hover .pager-title {
      color: var(--color-primary);
    }

    .related-section {
      max-width: 900px;
      margin: 56px auto 0;
    }
    .section-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    .section-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-ink);
      position: relative;
      padding-left: 16px;
      line-height: 1.3;
    }
    .section-title::before {
      content: '';
      position: absolute;
      left: 0;
      top: .18em;
      width: 4px;
      height: 1em;
      border-radius: 2px;
      background: var(--color-primary);
    }
    .section-more {
      font-size: .875rem;
      color: var(--color-primary);
      font-weight: 500;
      transition: opacity .2s;
    }
    .section-more:hover {
      opacity: .75;
    }
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .related-card {
      background: var(--color-surface);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--color-line);
      transition: all .25s var(--ease);
    }
    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }
    .related-card img {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      transition: transform .4s var(--ease);
    }
    .related-card:hover img {
      transform: scale(1.03);
    }
    .related-card h4 {
      font-size: .9375rem;
      font-weight: 600;
      color: var(--color-ink);
      line-height: 1.5;
      padding: 16px 20px 4px;
      transition: color .2s;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      min-height: 48px;
    }
    .related-card:hover h4 {
      color: var(--color-primary);
    }
    .related-time {
      display: block;
      padding: 0 20px 16px;
      font-size: .75rem;
      color: #8b8e96;
      font-family: var(--font-num);
    }

    .article-footer-action {
      max-width: 720px;
      margin: 40px auto 0;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
    }

    .not-found {
      text-align: center;
      padding: 100px 24px 120px;
      max-width: 640px;
      margin: 0 auto;
    }
    .not-found-icon {
      width: 88px;
      height: 88px;
      margin: 0 auto 24px;
      border-radius: 50%;
      background: var(--color-primary-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
    }
    .not-found-icon svg {
      width: 36px;
      height: 36px;
    }
    .not-found h1 {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--color-ink);
      margin-bottom: 12px;
    }
    .not-found p {
      color: var(--color-body);
      margin-bottom: 32px;
    }

    .site-footer {
      background: var(--color-ink);
      color: rgba(255, 255, 255, .88);
      padding: 64px 0 0;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 48px;
    }
    .footer-brand .brand {
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: .875rem;
      color: rgba(255, 255, 255, .6);
      line-height: 1.7;
      max-width: 280px;
    }
    .footer-col h4 {
      font-size: .875rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: .02em;
    }
    .footer-col ul li {
      margin-bottom: 12px;
    }
    .footer-col ul a {
      font-size: .875rem;
      color: rgba(255, 255, 255, .72);
      transition: color .2s;
    }
    .footer-col ul a:hover {
      color: var(--color-secondary);
    }
    .footer-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .footer-tags a {
      font-size: .75rem;
      color: rgba(255, 255, 255, .72);
      background: rgba(255, 255, 255, .06);
      padding: 5px 12px;
      border-radius: var(--radius-badge);
      transition: all .2s;
    }
    .footer-tags a:hover {
      background: var(--color-primary);
      color: #fff;
    }
    .footer-meta {
      font-size: .8125rem;
      color: rgba(255, 255, 255, .6);
      display: grid;
      gap: 10px;
    }
    .footer-meta a {
      color: var(--color-secondary);
      transition: opacity .2s;
    }
    .footer-meta a:hover {
      opacity: .8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .08);
      padding: 24px 0;
      font-size: .8125rem;
      color: rgba(255, 255, 255, .5);
      text-align: center;
    }
    .footer-bottom a {
      color: rgba(255, 255, 255, .7);
      transition: color .2s;
    }
    .footer-bottom a:hover {
      color: var(--color-secondary);
    }

    html.js .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity .5s var(--ease), transform .5s var(--ease);
    }
    html.js .reveal-visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reduce-motion .reveal,
    .reduce-motion .reveal-visible {
      transition: none !important;
      opacity: 1 !important;
      transform: none !important;
    }

    @media (max-width: 1023px) {
      .header-inner {
        height: 56px;
        gap: 16px;
      }
      .search-wrap {
        display: none;
      }
      .btn-ghost {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .main-nav {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--color-surface);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 8px 24px 24px;
        transform: translateY(-120%);
        opacity: 0;
        transition: transform .4s var(--ease), opacity .3s ease;
        box-shadow: 0 24px 40px rgba(23, 24, 27, .12);
        border-bottom: 1px solid var(--color-line);
        z-index: 99;
      }
      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
      }
      .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--color-line);
      }
      .nav-link::after {
        display: none;
      }
      .nav-link.active {
        color: var(--color-primary);
      }
      .header-actions {
        gap: 8px;
      }
      .btn-sm {
        padding: 0 14px;
        font-size: .8125rem;
        height: 36px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .article-page {
        padding: 32px 0 64px;
      }
      .related-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 639px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .article-page > .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .article-title {
        font-size: 1.625rem;
      }
      .article-meta {
        gap: 6px;
        font-size: .8125rem;
      }
      .article-pager {
        grid-template-columns: 1fr;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .cms-article-body {
        font-size: 1rem;
        line-height: 1.8;
      }
      .breadcrumb {
        margin-bottom: 24px;
      }
      .article-footer-action {
        flex-direction: column;
      }
    }

/* roulang page: category2 */
:root{
  --color-primary:#D9432E;
  --color-primary-hover:#B93824;
  --color-primary-soft:rgba(217,67,46,.1);
  --color-secondary:#E8C46F;
  --color-ink:#17181B;
  --color-body:#4A4E57;
  --color-bg:#F7F5F2;
  --color-surface:#FFFFFF;
  --color-line:#E5E1DA;
  --color-success:#2E7D5B;
  --radius-card:16px;
  --radius-image:20px;
  --radius-button:8px;
  --radius-large:12px;
  --radius-badge:999px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(23,24,27,.06);
  --shadow-md:0 8px 24px rgba(23,24,27,.08);
  --shadow-lg:0 24px 48px rgba(23,24,27,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-digit:"DIN Alternate","Bebas Neue","Arial Narrow",sans-serif;
  --ease:cubic-bezier(.16,1,.3,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  color:var(--color-body);
  background:var(--color-bg);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font-family:var(--font-sans);cursor:pointer;border:none;background:none}
input{font-family:var(--font-sans)}
h1,h2,h3,h4{color:var(--color-ink);letter-spacing:-.02em;line-height:1.2}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,245,242,.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-header.scrolled{
  border-bottom-color:var(--color-line);
  background:rgba(247,245,242,.95);
}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;height:72px;gap:28px;
}
.brand{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.brand-icon{
  width:32px;height:32px;border-radius:50%;
  background:var(--color-primary);
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s var(--ease);
}
.brand:hover .brand-icon{transform:scale(1.06)}
.brand-icon svg{width:18px;height:18px;stroke:#fff}
.brand-text{
  font-size:1.125rem;font-weight:700;color:var(--color-ink);letter-spacing:-.02em;white-space:nowrap;
}
.brand-badge{
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-size:.6875rem;
  font-weight:600;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  white-space:nowrap;
}
.main-nav{
  display:flex;align-items:center;gap:6px;flex:1;justify-content:center;
}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:.9375rem;
  font-weight:500;
  color:var(--color-body);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:2px;background:var(--color-primary);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--color-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--color-primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{
  display:flex;align-items:center;gap:10px;flex-shrink:0;
}
.search-wrap{position:relative}
.search-input{
  width:180px;height:38px;border:1px solid transparent;
  background:var(--color-surface);
  border-radius:var(--radius-input);
  padding:0 14px 0 36px;
  font-size:.875rem;color:var(--color-ink);
  outline:none;
  box-shadow:var(--shadow-sm);
  transition:width .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-input:focus{
  width:260px;border-color:var(--color-primary);
  box-shadow:0 0 0 3px rgba(217,67,46,.12);
}
.search-icon{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;stroke:var(--color-body);pointer-events:none;
}
.nav-btn{
  height:38px;padding:0 16px;border-radius:var(--radius-button);
  font-size:.875rem;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  transition:all .2s var(--ease);
}
.nav-btn svg{width:15px;height:15px}
.btn-outline{
  background:transparent;border:1px solid var(--color-line);color:var(--color-ink);
}
.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}
.btn-primary{
  background:var(--color-primary);color:#fff;
  box-shadow:0 4px 14px rgba(217,67,46,.28);
}
.btn-primary:hover{
  background:var(--color-primary-hover);
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(217,67,46,.36);
}
.btn-primary:active{transform:scale(.98)}
.btn-dark{
  background:var(--color-ink);color:#fff;
}
.btn-dark:hover{background:#2a2c33;transform:translateY(-2px)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:8px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  background:var(--color-surface);border:1px solid var(--color-line);
}
.nav-toggle span{
  width:18px;height:2px;background:var(--color-ink);border-radius:2px;
  transition:all .3s var(--ease);
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile drawer */
.mobile-drawer{
  display:none;
  position:fixed;top:56px;left:0;right:0;bottom:0;z-index:99;
  background:var(--color-surface);
  padding:32px 24px;
  flex-direction:column;gap:20px;
  overflow-y:auto;
  border-top:1px solid var(--color-line);
}
.mobile-drawer.open{display:flex}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav .nav-link{
  padding:14px 16px;border-radius:12px;font-size:1rem;
  background:var(--color-bg);
}
.drawer-nav .nav-link.active{
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-weight:600;
}
.drawer-nav .nav-link::after{display:none}
.drawer-search{
  padding:14px 16px;background:var(--color-bg);border-radius:12px;
}
.drawer-search .search-input{width:100%}
.drawer-search .search-input:focus{width:100%}
.drawer-btns{display:flex;gap:10px}
.drawer-btns .nav-btn{flex:1;height:46px;font-size:.9375rem}

/* ===== Category Hero ===== */
.category-hero{
  position:relative;
  padding:80px 0 72px;
  background:var(--color-bg);
  overflow:hidden;
}
.category-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(23,24,27,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(23,24,27,.04) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}
.category-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;
  width:360px;height:360px;border-radius:50%;
  background:var(--color-primary);
  opacity:.07;filter:blur(160px);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  text-align:center;max-width:720px;margin:0 auto;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-size:.8125rem;font-weight:600;
  padding:6px 18px;
  border-radius:var(--radius-badge);
  margin-bottom:20px;
  letter-spacing:.03em;
}
.hero-badge svg{width:14px;height:14px}
.category-hero h1{
  font-size:clamp(2.2rem,3.6vw,3rem);
  font-weight:800;line-height:1.12;
  margin-bottom:18px;
}
.hero-desc{
  font-size:1.0625rem;color:var(--color-body);
  line-height:1.8;max-width:580px;margin:0 auto;
}

/* ===== Feature Showcase ===== */
.feature-showcase{
  padding:96px 0;
  background:var(--color-bg);
}
.section-head{
  text-align:center;
  max-width:640px;
  margin:0 auto 56px;
}
.section-head h2{
  font-size:clamp(1.75rem,2.6vw,2.4rem);
  font-weight:700;
  margin-bottom:12px;
}
.section-head p{
  color:var(--color-body);
  font-size:.9375rem;
}
.showcase-grid{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.showcase-media{
  position:relative;
  border-radius:var(--radius-image);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.showcase-media img{
  width:100%;height:440px;object-fit:cover;
  transition:transform .6s var(--ease);
}
.showcase-media:hover img{transform:scale(1.03)}
.showcase-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(23,24,27,.18) 0%,transparent 45%);
  pointer-events:none;
}
.showcase-points{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.point-card{
  background:var(--color-surface);
  border-radius:var(--radius-card);
  padding:28px 24px;
  border:1px solid var(--color-line);
  box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.point-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:rgba(217,67,46,.3);
}
.point-icon{
  width:46px;height:46px;border-radius:12px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:16px;
}
.point-icon svg{width:22px;height:22px}
.point-card h3{
  font-size:1.0625rem;font-weight:700;
  margin-bottom:8px;
}
.point-card p{
  font-size:.8438rem;
  line-height:1.7;
  color:var(--color-body);
}

/* ===== Feature Dark ===== */
.feature-dark{
  background:var(--color-ink);
  padding:96px 0;
  position:relative;
  overflow:hidden;
}
.feature-dark::before{
  content:"";position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%);
  width:500px;height:500px;border-radius:50%;
  background:var(--color-primary);opacity:.06;
  filter:blur(160px);pointer-events:none;
}
.dark-wrap{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.dark-text h2{
  color:#fff;
  font-size:clamp(1.75rem,2.6vw,2.4rem);
  font-weight:700;
  margin-bottom:20px;
}
.dark-text p{
  color:rgba(255,255,255,.88);
  font-size:.9375rem;
  line-height:1.8;
}
.dark-platforms{
  display:flex;
  flex-direction:column;
  gap:16px;
}
.platform-row{
  background:#202226;
  border:1px solid rgba(255,255,255,.06);
  border-radius:var(--radius-card);
  padding:22px 24px;
  display:flex;
  align-items:center;
  gap:18px;
  transition:border-color .3s var(--ease),transform .3s var(--ease);
}
.platform-row:hover{
  border-color:var(--color-primary);
  transform:translateX(6px);
}
.platform-index{
  font-family:var(--font-digit);
  font-size:2.25rem;
  font-weight:700;
  color:rgba(255,255,255,.14);
  min-width:48px;
  text-align:center;
  line-height:1;
}
.platform-ic{
  width:42px;height:42px;border-radius:12px;
  background:rgba(217,67,46,.16);
  color:var(--color-secondary);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.platform-ic svg{width:20px;height:20px}
.platform-info h4{
  color:#fff;font-size:.9375rem;font-weight:600;
  margin-bottom:2px;
}
.platform-info span{
  color:rgba(255,255,255,.55);
  font-size:.8125rem;
}

/* ===== Feature Scenes ===== */
.feature-scenes{
  padding:96px 0;
  background:var(--color-bg);
}
.scene-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  margin-bottom:80px;
}
.scene-row:last-child{margin-bottom:0}
.scene-row.reverse .scene-media{order:2}
.scene-row.reverse .scene-text{order:1}
.scene-media{
  border-radius:var(--radius-image);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  position:relative;
}
.scene-media img{
  width:100%;height:320px;object-fit:cover;
  transition:transform .6s var(--ease);
}
.scene-media:hover img{transform:scale(1.04)}
.scene-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--color-primary-soft);
  color:var(--color-primary);
  font-size:.75rem;
  font-weight:600;
  padding:4px 14px;
  border-radius:var(--radius-badge);
  margin-bottom:14px;
}
.scene-text h3{
  font-size:1.625rem;
  font-weight:700;
  margin-bottom:14px;
}
.scene-text p{
  color:var(--color-body);
  font-size:.9375rem;
  line-height:1.8;
  margin-bottom:16px;
}
.scene-list{
  list-style:none;
  padding:0;
  margin:0;
}
.scene-list li{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 0;
  font-size:.875rem;
  color:var(--color-body);
}
.scene-list li svg{
  width:18px;height:18px;
  stroke:var(--color-success);
  flex-shrink:0;
}

/* ===== CTA Banner ===== */
.cta-banner{
  background:var(--color-primary);
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;top:-100px;right:-100px;
  width:360px;height:360px;border-radius:50%;
  background:rgba(255,255,255,.08);
  filter:blur(120px);
}
.cta-banner .container{position:relative;z-index:1;text-align:center}
.cta-banner h2{
  color:#fff;
  font-size:clamp(1.75rem,2.6vw,2.4rem);
  font-weight:700;
  margin-bottom:14px;
}
.cta-banner p{
  color:rgba(255,255,255,.85);
  font-size:.9375rem;
  margin-bottom:32px;
  max-width:520px;
  margin-left:auto;
  margin-right:auto;
}
.cta-group{
  display:flex;
  gap:16px;
  justify-content:center;
  flex-wrap:wrap;
}
.cta-group .cta-btn{
  height:52px;padding:0 32px;
  border-radius:var(--radius-large);
  font-size:.9375rem;font-weight:600;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .3s var(--ease);
  position:relative;
  overflow:hidden;
}
.cta-btn svg{width:18px;height:18px}
.cta-btn-light{
  background:#fff;color:var(--color-primary);
  box-shadow:0 8px 24px rgba(0,0,0,.18);
}
.cta-btn-light:hover{transform:translateY(-3px);box-shadow:0 12px 32px rgba(0,0,0,.24)}
.cta-btn-ghost{
  background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.5);
}
.cta-btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-3px)}
.cta-meta{
  margin-top:22px;
  font-size:.8125rem;
  color:rgba(255,255,255,.65);
}
.cta-meta a{
  color:#fff;text-decoration:underline;
  text-underline-offset:3px;
}
.cta-meta a:hover{opacity:.85}

/* ===== FAQ ===== */
.feature-faq{
  padding:96px 0;
  background:var(--color-bg);
}
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 24px;
  max-width:960px;
  margin:0 auto;
}
.faq-item{
  background:var(--color-surface);
  border:1px solid var(--color-line);
  border-radius:var(--radius-card);
  padding:0 24px;
  overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item:hover{border-color:rgba(217,67,46,.3);box-shadow:var(--shadow-sm)}
.faq-question{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0;
  text-align:left;
}
.faq-question h4{
  font-size:.9375rem;
  font-weight:600;
  color:var(--color-ink);
  transition:color .2s var(--ease);
}
.faq-item.active .faq-question h4{color:var(--color-primary)}
.faq-toggle{
  width:28px;height:28px;border-radius:50%;
  background:var(--color-bg);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.faq-toggle svg{
  width:14px;height:14px;stroke:var(--color-body);
  transition:transform .3s var(--ease);
}
.faq-item.active .faq-toggle{
  background:var(--color-primary-soft);
  transform:rotate(45deg);
}
.faq-item.active .faq-toggle svg{stroke:var(--color-primary)}
.faq-answer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-answer-inner{
  padding:0 0 20px;
  border-left:2px solid var(--color-primary);
  background:var(--color-bg);
  border-radius:0 12px 12px 0;
  padding-left:18px;
  margin-bottom:20px;
  margin-top:4px;
}
.faq-answer-inner p{
  font-size:.875rem;
  color:var(--color-body);
  line-height:1.8;
}
.faq-item.active .faq-answer{max-height:280px}

/* ===== Footer ===== */
.site-footer{
  background:var(--color-ink);
  padding:72px 0 0;
  color:rgba(255,255,255,.7);
  font-size:.875rem;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand{
  margin-bottom:16px;
}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-badge{
  background:rgba(217,67,46,.18);
  color:#ff8a76;
}
.footer-brand p{
  font-size:.8438rem;
  line-height:1.8;
  margin-top:14px;
  max-width:320px;
}
.footer-col h4{
  color:#fff;
  font-size:.9375rem;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul{list-style:none;padding:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  color:rgba(255,255,255,.6);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col ul a:hover{
  color:var(--color-secondary);
  padding-left:4px;
}
.footer-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.footer-tags a{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  padding:5px 14px;
  border-radius:var(--radius-badge);
  font-size:.75rem;
  color:rgba(255,255,255,.65);
  transition:all .2s var(--ease);
}
.footer-tags a:hover{
  border-color:var(--color-primary);
  color:#fff;
  background:rgba(217,67,46,.15);
}
.footer-meta div{
  margin-bottom:10px;
  font-size:.8125rem;
  color:rgba(255,255,255,.55);
}
.footer-meta a{
  color:rgba(255,255,255,.8);
  text-decoration:underline;
  text-underline-offset:3px;
}
.footer-meta a:hover{color:#fff}
.footer-bottom{
  padding:24px 0;
  text-align:center;
  font-size:.8125rem;
  color:rgba(255,255,255,.45);
  border-top:1px solid rgba(255,255,255,.06);
}
.footer-bottom a{
  color:rgba(255,255,255,.7);
}
.footer-bottom a:hover{color:#fff}

/* ===== Reveal animation ===== */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.reveal.visible{
  opacity:1;
  transform:translateY(0);
}

/* ===== Button focus ===== */
.btn:focus-visible,
.nav-btn:focus-visible,
.faq-question:focus-visible,
.search-input:focus-visible,
.nav-toggle:focus-visible{
  outline:2px solid var(--color-primary);
  outline-offset:2px;
}

/* ===== Responsive ===== */
@media(max-width:1023px){
  .header-inner{height:64px;gap:16px}
  .main-nav{display:none}
  .nav-actions .search-wrap,
  .nav-actions .btn-outline{display:none}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
  .showcase-grid{grid-template-columns:1fr;gap:40px}
  .showcase-media img{height:340px}
  .dark-wrap{grid-template-columns:1fr;gap:40px}
  .scene-row{grid-template-columns:1fr;gap:32px}
  .scene-row.reverse .scene-media{order:1}
  .scene-row.reverse .scene-text{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:64px 0}
  .feature-showcase,.feature-dark,.feature-scenes,.feature-faq{padding:64px 0}
  .category-hero{padding:64px 0 56px}
  .faq-grid{grid-template-columns:1fr}
}
@media(max-width:639px){
  .header-inner{height:56px;padding:0 16px}
  .brand-text{font-size:1rem}
  .brand-badge{display:none}
  .search-input{display:none}
  .nav-btn{padding:0 14px}
  .category-hero{padding:52px 0 48px}
  .category-hero h1{font-size:2rem}
  .hero-desc{font-size:.9375rem}
  .showcase-points{grid-template-columns:1fr}
  .showcase-media img{height:240px}
  .section-head{margin-bottom:40px}
  .dark-platforms{gap:12px}
  .platform-row{padding:16px}
  .platform-index{font-size:1.5rem;min-width:36px}
  .scene-media img{height:220px}
  .cta-group{flex-direction:column;align-items:stretch;max-width:320px;margin:0 auto}
  .cta-group .cta-btn{justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{font-size:.75rem}
  .container{padding:0 20px}
  .faq-grid{margin-top:8px}
  .cta-banner{padding:56px 0}
}

/* roulang page: category3 */
:root {
  --color-primary: #D9432E;
  --color-primary-hover: #B93824;
  --color-primary-soft: rgba(217, 67, 46, .1);
  --color-secondary: #E8C46F;
  --color-ink: #17181B;
  --color-body: #4A4E57;
  --color-bg: #F7F5F2;
  --color-surface: #FFFFFF;
  --color-line: #E5E1DA;
  --color-success: #2E7D5B;
  --radius-card: 16px;
  --radius-image: 20px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-sm: 0 1px 2px rgba(23, 24, 27, .06);
  --shadow-md: 0 8px 24px rgba(23, 24, 27, .08);
  --shadow-lg: 0 24px 48px rgba(23, 24, 27, .12);
  --ease: cubic-bezier(.16, 1, .3, 1);
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "DIN Alternate", "Bebas Neue", "Arial Narrow", sans-serif;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-body);
  background: var(--color-bg);
  letter-spacing: .01em;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--color-primary); }
button { font-family: inherit; border: none; cursor: pointer; background: none; }
ul, ol { list-style: none; }
input { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-head { margin-bottom: 48px; }
.section-head .section-h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.section-head .section-desc { margin-top: 12px; font-size: 1rem; color: var(--color-body); max-width: 640px; }
.section-label {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
}

/* Header Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 242, .85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: 0 4px 24px rgba(23, 24, 27, .04);
}
.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.brand-icon {
  width: 32px; height: 32px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-icon svg { width: 16px; height: 16px; }
.brand-text {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-ink);
  letter-spacing: -0.01em;
  line-height: 1;
}
.brand-badge {
  font-size: .6875rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 3px 8px;
  border-radius: var(--radius-badge);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.main-nav .nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--color-ink);
  border-radius: 6px;
  white-space: nowrap;
  transition: color .2s var(--ease);
}
.main-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 0;
  height: 4px;
  border-radius: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.main-nav .nav-link:hover { color: var(--color-primary); }
.main-nav .nav-link:hover::after { transform: scaleX(1); }
.main-nav .nav-link.active { color: var(--color-primary); font-weight: 600; }
.main-nav .nav-link.active::after { transform: scaleX(1); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-search {
  position: relative;
  width: 180px;
  transition: width .2s var(--ease);
}
.nav-search:focus-within { width: 260px; }
.nav-search .search-input {
  width: 100%;
  height: 36px;
  padding: 0 12px 0 36px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: rgba(255, 255, 255, .9);
  font-size: .875rem;
  color: var(--color-ink);
  outline: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  box-shadow: var(--shadow-sm);
}
.nav-search .search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(217, 67, 46, .12);
}
.nav-search .search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: #9a9ea8;
  pointer-events: none;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all .2s var(--ease);
  white-space: nowrap;
  cursor: pointer;
}
.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.btn:active { transform: scale(.98); }
.btn-sm { height: 36px; padding: 0 16px; font-size: .875rem; }
.btn-outline {
  background: transparent;
  border: 1px solid var(--color-line);
  color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-soft); }
.btn-download {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(217, 67, 46, .25);
}
.btn-download:hover { background: var(--color-primary-hover); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(217, 67, 46, .3); }
.btn-download svg { width: 16px; height: 16px; }
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}
.nav-toggle svg { width: 20px; height: 20px; color: var(--color-ink); }
.mobile-menu {
  display: none;
  position: fixed;
  top: 56px; left: 0; right: 0;
  background: var(--color-surface);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  z-index: 99;
  border-bottom: 1px solid var(--color-line);
}
.mobile-menu.open { display: block; }
.mobile-menu .mobile-nav { display: flex; flex-direction: column; gap: 4px; }
.mobile-menu .nav-link {
  padding: 14px 16px;
  font-size: 1rem;
  color: var(--color-ink);
  border-radius: 8px;
  border-bottom: 1px solid var(--color-line);
}
.mobile-menu .nav-link:last-child { border-bottom: none; }
.mobile-menu .nav-link.active { color: var(--color-primary); background: var(--color-primary-soft); }
.mobile-search { margin-bottom: 16px; position: relative; }
.mobile-search .search-input {
  width: 100%;
  height: 40px;
  padding: 0 12px 0 38px;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  font-size: .9375rem;
  outline: none;
}
.mobile-search .search-input:focus { border-color: var(--color-primary); }
.mobile-search .search-icon {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px;
  color: #9a9ea8;
}

/* Page Hero */
.page-hero {
  background: var(--color-bg);
  padding: 88px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 400px; height: 400px;
  background: var(--color-primary);
  opacity: .06;
  border-radius: 50%;
  filter: blur(120px);
}
.page-hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 48px;
  align-items: flex-end;
  justify-content: space-between;
}
.page-hero-left { flex: 1; max-width: 680px; }
.page-hero .page-h1 {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 16px;
}
.page-hero .page-desc {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-body);
  max-width: 600px;
}
.page-hero-right .hero-shield {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-surface);
  border-radius: 12px;
  padding: 10px 18px;
  box-shadow: var(--shadow-md);
  font-size: .875rem;
  font-weight: 500;
  color: var(--color-success);
  white-space: nowrap;
}
.page-hero-right .hero-shield svg { width: 20px; height: 20px; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  color: #9a9ea8;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a { color: #9a9ea8; transition: color .2s var(--ease); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .sep { color: #c8ccc8; }
.breadcrumb .current { color: var(--color-primary); font-weight: 500; }

/* Security Intro Cards */
.sec-intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sec-intro-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  border: 1px solid var(--color-line);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.sec-intro-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.sec-intro-card .icon-wrap {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.sec-intro-card .icon-wrap svg { width: 24px; height: 24px; color: var(--color-primary); }
.sec-intro-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 10px;
}
.sec-intro-card p { font-size: .875rem; line-height: 1.7; color: var(--color-body); }

/* FAQ Accordion */
.faq-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}
.faq-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  overflow: hidden;
  transition: box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.faq-item:hover { border-color: rgba(217, 67, 46, .4); box-shadow: var(--shadow-sm); }
.faq-item.open { border-color: rgba(217, 67, 46, .4); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  cursor: pointer;
  user-select: none;
}
.faq-q h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.5;
}
.faq-icon {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.faq-icon svg { width: 14px; height: 14px; color: var(--color-body); transition: color .3s var(--ease); }
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.faq-item.open .faq-icon svg { color: #fff; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s var(--ease);
}
.faq-a-inner {
  padding: 0 24px 24px;
  border-left: 2px solid var(--color-primary);
  margin-left: 24px;
  padding-left: 16px;
  background: var(--color-bg);
  border-radius: 0 8px 8px 0;
  margin-right: 24px;
}
.faq-a p {
  font-size: .875rem;
  line-height: 1.75;
  color: var(--color-body);
  padding: 16px 16px 16px 12px;
}
.faq-a-inner p { padding: 16px 12px 16px 12px; }

/* Warning Cards */
.warning-section {
  background: var(--color-bg);
}
.warning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.warning-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  border: 1px solid rgba(217, 67, 46, .25);
  border-top: 3px solid var(--color-primary);
  padding: 32px 28px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.warning-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.warning-card .warn-badge {
  display: inline-block;
  font-size: .75rem;
  font-weight: 600;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
  letter-spacing: .04em;
}
.warning-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 10px;
}
.warning-card p { font-size: .875rem; line-height: 1.7; color: var(--color-body); }
.warning-card .warn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--color-primary);
}
.warning-card .warn-link svg { width: 14px; height: 14px; }
.warning-card .warn-link:hover { text-decoration: underline; }

/* CTA */
.cta-section {
  background: var(--color-ink);
  padding: 88px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 300px;
  background: var(--color-primary);
  opacity: .08;
  border-radius: 50%;
  filter: blur(120px);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 12px;
}
.cta-sub {
  font-size: 1rem;
  color: rgba(255, 255, 255, .72);
  max-width: 560px;
  margin: 0 auto 40px;
}
.cta-btns {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-lg {
  height: 56px;
  padding: 0 32px;
  font-size: 1.0625rem;
  border-radius: 12px;
  min-width: 200px;
}
.btn-white {
  background: #fff;
  color: var(--color-ink);
}
.btn-white:hover { background: rgba(255, 255, 255, .9); color: var(--color-ink); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 255, 255, .15); }

/* Help link */
.help-link-row {
  text-align: center;
  margin-top: 48px;
}
.help-link-row a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-ink);
  padding: 12px 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-btn);
  background: var(--color-surface);
  transition: all .2s var(--ease);
}
.help-link-row a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
  background: var(--color-primary-soft);
}
.help-link-row a svg { width: 16px; height: 16px; }

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, .72);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand p {
  font-size: .8125rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, .55);
  max-width: 280px;
}
.footer-col h4 {
  font-size: .875rem;
  font-weight: 600;
  color: rgba(255, 255, 255, .92);
  margin-bottom: 16px;
  letter-spacing: .02em;
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: .8125rem;
  color: rgba(255, 255, 255, .55);
  transition: color .2s var(--ease);
  padding: 4px 0;
  display: inline-block;
}
.footer-col ul li a:hover { color: #fff; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-tags a {
  font-size: .75rem;
  color: rgba(255, 255, 255, .6);
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: var(--radius-badge);
  padding: 4px 12px;
  transition: all .2s var(--ease);
}
.footer-tags a:hover {
  border-color: var(--color-primary);
  color: #fff;
  background: rgba(217, 67, 46, .15);
}
.footer-meta div {
  font-size: .8125rem;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 8px;
}
.footer-meta a { color: rgba(255, 255, 255, .65); }
.footer-meta a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  text-align: center;
  font-size: .8125rem;
  color: rgba(255, 255, 255, .4);
}
.footer-bottom a { color: rgba(255, 255, 255, .55); }
.footer-bottom a:hover { color: #fff; }

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Media Queries */
@media (max-width: 1024px) {
  .main-nav { gap: 0; }
  .nav-search { display: none; }
  .nav-actions .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .sec-intro-grid { grid-template-columns: 1fr 1fr; }
  .warning-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .nav-container { height: 56px; }
  .brand-text { font-size: 1rem; }
  .brand-badge { display: none; }
  .nav-actions .btn-sm { display: none; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero-inner { flex-direction: column; gap: 24px; }
  .faq-grid { grid-template-columns: 1fr; }
  .sec-intro-grid { grid-template-columns: 1fr; }
  .warning-grid { grid-template-columns: 1fr; }
  .cta-btns { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; max-width: 320px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .page-hero-right .hero-shield { font-size: .75rem; padding: 8px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}