/* roulang page: index */
:root{
  --ink:#101310;
  --ink-soft:#2A302A;
  --paper:#F7F5EF;
  --paper-2:#EFEBE1;
  --line:#DCD6C8;
  --accent:#C7F04A;
  --copper:#9A6B3A;
  --text:#1B1F1B;
  --muted:#5C625B;
  --white:#FFFFFF;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,19,16,.06);
  --shadow-2:0 14px 34px -18px rgba(16,19,16,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,dl,dd,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:var(--accent);color:var(--ink)}
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:20px}
@media(min-width:768px){.container{padding-inline:32px}}
@media(min-width:1024px){.container{padding-inline:48px}}
.section{padding-block:64px}
@media(min-width:768px){.section{padding-block:88px}}
@media(min-width:1024px){.section{padding-block:112px}}
.section-tight{padding-block:48px}
@media(min-width:1024px){.section-tight{padding-block:64px}}

/* ---------- 文本层级 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--copper);text-transform:uppercase}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--copper)}
.h2{font-size:clamp(24px,3.4vw,40px);line-height:1.15;letter-spacing:-.012em;font-weight:800;color:var(--ink)}
.h3{font-size:clamp(18px,2vw,22px);line-height:1.3;font-weight:700;color:var(--ink)}
.lead{font-size:15px;line-height:1.8;color:var(--muted);max-width:60ch}
.num{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn svg{flex:none}
.btn-primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-primary:hover{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:var(--white)}
.btn-ghost:hover .btn-arrow{transform:translateX(4px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-accent{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-accent:hover{background:var(--paper);border-color:var(--paper);color:var(--ink)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-arrow{transition:transform .22s var(--ease)}

/* ---------- 文字链 ---------- */
.link-more{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);padding-bottom:2px}
.link-more::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.link-more:hover::after{transform:scaleX(1)}

/* ---------- 标签与胶囊 ---------- */
.pill{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;background:var(--accent);color:var(--ink);font-size:11px;font-weight:700;letter-spacing:.04em;line-height:1}
.pill-quiet{background:var(--paper-2);color:var(--ink-soft);font-weight:600}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--ink-soft);background:var(--white)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(247,245,239,.94);backdrop-filter:blur(6px);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-scrolled{border-bottom:1px solid var(--line);box-shadow:0 6px 18px -18px rgba(16,19,16,.4)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{display:inline-flex;flex:none}
.logo-text{display:flex;flex-direction:column;font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1.1;color:var(--ink)}
.logo-text small{font-size:11px;font-weight:500;letter-spacing:.05em;color:var(--muted);margin-top:4px}
.brand-actions{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:var(--white);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px var(--accent)}
.search-box input{border:0;background:transparent;outline:none;font-size:14px;width:168px;color:var(--ink)}
.search-box input::placeholder{color:#98A093;font-size:13px}
.search-box button{border:0;background:transparent;padding:0;display:inline-flex;cursor:pointer;color:var(--ink-soft)}
.search-box button:hover{color:var(--ink)}
.link-quiet{font-size:14px;color:var(--ink-soft);transition:color .2s var(--ease)}
.link-quiet:hover{color:var(--ink)}
.header-channels{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(247,245,239,.96)}
.channel-inner{display:flex;align-items:center;gap:28px;height:52px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
@media(max-width:1023px){
  .channel-inner{gap:22px;-webkit-mask-image:linear-gradient(to right,#000 88%,transparent);mask-image:linear-gradient(to right,#000 88%,transparent)}
}
.channel{position:relative;display:inline-flex;align-items:center;height:52px;font-size:14px;color:var(--ink-soft);white-space:nowrap;transition:color .2s var(--ease)}
.channel::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.channel:hover{color:var(--ink)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--ink);font-weight:700}
.channel.is-active::after{transform:scaleX(1)}
@media(max-width:767px){
  .brand-inner{height:60px;gap:12px}
  .logo-text{font-size:17px}
  .logo-text small{display:none}
  .search-box{display:none}
}
@media(max-width:520px){
  .brand-actions .link-quiet{display:none}
  .brand-actions{gap:10px}
}

/* ---------- 实时状态条 ---------- */
.live-bar{background:var(--paper-2);border-bottom:1px solid var(--line)}
.live-inner{display:flex;align-items:center;gap:12px;min-height:44px;font-size:13px;color:var(--ink-soft);flex-wrap:wrap;padding-block:8px}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--copper);flex:none;box-shadow:0 0 0 3px rgba(154,107,58,.14)}
.live-text strong{font-weight:700;color:var(--ink)}
.live-link{margin-left:auto;font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap;transition:color .2s var(--ease)}
.live-link:hover{color:var(--copper)}

/* ---------- Hero ---------- */
.hero{padding-top:36px;padding-bottom:52px}
@media(min-width:1024px){.hero{padding-top:56px;padding-bottom:72px}}
.hero-grid{display:grid;gap:36px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:1fr 1fr;gap:56px}}
.hero h1{
  font-size:clamp(32px,5.4vw,58px);
  line-height:1.08;letter-spacing:-.022em;font-weight:800;color:var(--ink);
  margin-top:18px;max-width:15ch;
}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.8;color:var(--muted);max-width:46ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
@media(max-width:520px){
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:36px;gap:0}
.hero-stats>div{padding-right:22px;margin-right:22px;border-right:1px solid var(--line)}
.hero-stats>div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats dt{font-size:12px;color:var(--muted);letter-spacing:.04em}
.hero-stats dd{font-size:20px;font-weight:700;color:var(--ink);margin-top:4px;line-height:1.2}
.hero-stats dd span{font-size:12px;font-weight:500;color:var(--muted);margin-left:4px}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;background:var(--paper-2);aspect-ratio:4/3;border:1px solid var(--line)}
@media(min-width:1024px){.hero-visual{aspect-ratio:5/4}}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-badge{position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border-radius:999px;background:var(--accent);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.04em}
.hero-corner{position:absolute;right:16px;top:16px;display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;background:rgba(16,19,16,.82);color:var(--paper);font-size:12px;font-weight:600}

/* ---------- Hero 入场 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.hero-copy>*{animation:fadeUp .6s var(--ease) both}
.hero-copy>*:nth-child(1){animation-delay:.02s}
.hero-copy>*:nth-child(2){animation-delay:.08s}
.hero-copy>*:nth-child(3){animation-delay:.14s}
.hero-copy>*:nth-child(4){animation-delay:.2s}
.hero-copy>*:nth-child(5){animation-delay:.26s}
.hero-visual{animation:fadeUp .7s var(--ease) .1s both}

/* ---------- 保障条 ---------- */
.guarantee{background:var(--paper-2);border-block:1px solid var(--line)}
.guarantee-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0}
@media(min-width:1024px){.guarantee-grid{grid-template-columns:repeat(4,1fr)}}
.guarantee-item{padding:24px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;gap:12px;align-items:flex-start}
.guarantee-item:nth-child(2n){border-right:0}
@media(min-width:1024px){
  .guarantee-item{border-bottom:0;padding:28px 24px}
  .guarantee-item:nth-child(2n){border-right:1px solid var(--line)}
  .guarantee-item:last-child{border-right:0}
}
.guarantee-icon{color:var(--copper);flex:none;margin-top:2px}
.guarantee-name{font-size:15px;font-weight:700;color:var(--ink);line-height:1.4}
.guarantee-note{font-size:12px;color:var(--muted);line-height:1.7;margin-top:4px}

/* ---------- 板块头 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head .lead{margin-top:10px}

/* ---------- 游戏卡 ---------- */
.game-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(min-width:768px){.game-grid{gap:20px}}
@media(min-width:1024px){.game-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9C2B0}
.thumb{position:relative;overflow:hidden;background:var(--paper-2);aspect-ratio:4/3}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.thumb .pill{position:absolute;left:12px;top:12px}
.game-body{padding:16px;display:flex;flex-direction:column;flex:1}
.game-name{font-size:17px;font-weight:700;color:var(--ink);line-height:1.4}
.game-desc{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.game-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.game-price{font-size:15px;font-weight:700;color:var(--ink)}
.game-price span{font-size:11px;font-weight:500;color:var(--muted);margin-left:4px}
.game-price small{display:block;font-size:11px;font-weight:500;color:var(--muted);line-height:1.5;margin-top:2px}
.add-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--paper);font-size:13px;font-weight:600;color:var(--ink);cursor:pointer;transition:all .2s var(--ease);white-space:nowrap}
.add-btn:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.add-btn:active{transform:translateY(1px)}
@media(max-width:639px){
  .game-desc{-webkit-line-clamp:1}
  .game-foot{flex-direction:column;align-items:stretch;gap:10px}
  .game-price small{display:none}
  .add-btn{width:100%}
}

/* ---------- 评价轮播 ---------- */
.reviews{background:var(--paper-2);border-block:1px solid var(--line)}
.review-toolbar{display:flex;align-items:center;gap:10px}
.carousel-btn{width:42px;height:42px;border-radius:999px;border:1px solid var(--line);background:var(--white);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);transition:all .2s var(--ease)}
.carousel-btn:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.carousel-btn:disabled{opacity:.4;cursor:not-allowed}
.review-viewport{overflow:hidden;padding-block:4px}
.review-track{display:flex;gap:20px;transition:transform .45s var(--ease)}
@media(min-width:1024px){.review-track{gap:24px}}
.review-card{flex:0 0 100%;min-width:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;display:flex;flex-direction:column}
@media(min-width:640px){.review-card{flex-basis:calc((100% - 20px)/2)}}
@media(min-width:1024px){.review-card{flex-basis:calc((100% - 48px)/3)}}
.review-quote{font-family:Georgia,"Songti SC",serif;font-size:44px;line-height:.8;color:var(--copper);height:26px}
.review-stars{display:flex;gap:3px;margin-top:12px;color:var(--accent)}
.review-text{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.review-person{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--paper-2);border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:var(--ink-soft);flex:none}
.review-name{font-size:14px;font-weight:700;color:var(--ink);line-height:1.4}
.review-role{font-size:12px;color:var(--muted);line-height:1.5}
.review-date{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}
.review-dots{display:flex;justify-content:center;gap:8px;margin-top:28px}
.review-dot{width:16px;height:3px;border-radius:2px;background:#CFC8B7;border:0;padding:0;cursor:pointer;transition:background .2s var(--ease),width .2s var(--ease)}
.review-dot.is-active{background:var(--ink);width:26px}

/* ---------- 资讯列表 ---------- */
.post-grid{display:grid;gap:24px;min-height:320px}
@media(min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9C2B0}
.post-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-cat{font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--ink);background:var(--accent);border-radius:999px;padding:4px 11px;align-self:flex-start;line-height:1.2}
.post-title{margin-top:12px;font-size:18px;font-weight:700;line-height:1.45;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.post-card:hover .post-title{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.post-summary{margin-top:10px;font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted)}
.post-foot .num{font-size:12px}
.post-arrow{color:var(--ink);transition:transform .2s var(--ease)}
.post-card:hover .post-arrow{transform:translateX(4px)}
.empty-state{grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--radius-card);padding:56px 24px;text-align:center;background:var(--paper-2)}
.empty-state p{font-size:15px;color:var(--muted)}
.empty-state .btn{margin-top:20px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;gap:0;border-top:1px solid var(--line)}
@media(min-width:1024px){.faq-grid{grid-template-columns:1fr 1fr;column-gap:56px}}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--copper)}
.faq-icon{flex:none;color:var(--ink);transition:transform .22s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--copper)}
.faq-answer{padding:0 32px 22px 0;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:var(--paper)}
.cta-inner{display:flex;flex-direction:column;gap:26px;padding-block:64px}
@media(min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px;padding-block:76px}}
.cta-title{font-size:clamp(24px,3.2vw,38px);line-height:1.18;font-weight:800;letter-spacing:-.012em;color:var(--paper)}
.cta-note{margin-top:12px;font-size:14px;color:rgba(247,245,239,.7);line-height:1.8;max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:none}
@media(max-width:520px){.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding-top:64px}
.footer-grid{display:grid;gap:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:48px}}
.footer-brand .logo-text{color:var(--paper)}
.footer-brand .logo-text small{color:rgba(247,245,239,.6)}
.footer-desc{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(247,245,239,.7);max-width:34ch}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.footer-tags a{display:inline-flex;align-items:center;height:26px;padding:0 11px;border:1px solid #2C332C;border-radius:999px;font-size:12px;color:rgba(247,245,239,.75);transition:all .2s var(--ease)}
.footer-tags a:hover{border-color:var(--accent);color:var(--accent)}
.footer-title{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:rgba(247,245,239,.6);margin-bottom:18px}
.footer-title::before{content:"";width:8px;height:8px;background:var(--copper);flex:none}
.footer-list{display:flex;flex-direction:column;gap:12px}
.footer-list a{font-size:14px;color:rgba(247,245,239,.78);transition:color .2s var(--ease)}
.footer-list a:hover{color:var(--accent)}
.footer-contact li{font-size:14px;color:rgba(247,245,239,.78);line-height:1.8}
.footer-contact li strong{color:var(--paper);font-weight:600}
.footer-bottom{border-top:1px solid #2C332C;margin-top:52px;padding-block:24px;display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;font-size:12px;color:rgba(247,245,239,.55);line-height:1.8}
.footer-bottom a{color:rgba(247,245,239,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .card:hover,.post-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink:#101310;
  --ink-soft:#2A302A;
  --paper:#F7F5EF;
  --paper-2:#EFEBE1;
  --line:#DCD6C8;
  --line-dark:#2C332C;
  --accent:#C7F04A;
  --copper:#9A6B3A;
  --text:#1B1F1B;
  --muted:#5C625B;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,19,16,.06);
  --shadow-2:0 14px 34px -18px rgba(16,19,16,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;background:var(--paper-2)}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
input,textarea{font:inherit;color:inherit}
::selection{background:var(--accent);color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:640px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1024px){.container{padding-left:48px;padding-right:48px}}
.num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,239,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-brand{height:72px;display:flex;align-items:center}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{display:inline-flex;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.2;color:var(--ink)}
.logo-text small{font-size:11px;font-weight:400;color:var(--muted);letter-spacing:.06em;margin-top:3px}
.brand-actions{display:flex;align-items:center;gap:14px}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:999px;
  height:40px;padding:0 6px 0 14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.search-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 2px rgba(199,240,74,.55);background:#fff}
.search-box input{border:0;background:transparent;outline:none;font-size:13px;width:186px;color:var(--text)}
.search-box input::placeholder{color:#8B9089}
.search-box button{
  width:30px;height:30px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-soft);transition:background .2s var(--ease),color .2s var(--ease);
}
.search-box button:hover{background:var(--ink);color:var(--paper)}
.link-quiet{font-size:14px;color:var(--ink-soft);position:relative;padding-bottom:2px}
.link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.link-quiet:hover::after{transform:scaleX(1)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn svg{transition:transform .22s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--paper);box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent);color:var(--ink)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-sm{height:38px;padding:0 18px;font-size:13px}
.header-channels{background:rgba(247,245,239,.75);border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}
.channel-inner{display:flex;align-items:center;gap:28px;height:52px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel{
  position:relative;font-size:14px;color:var(--muted);white-space:nowrap;line-height:52px;
  transition:color .2s var(--ease);
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.channel:hover{color:var(--ink)}
.channel:hover::after{transform:scaleX(1)}
.channel.is-active{color:var(--ink);font-weight:600}
.channel.is-active::after{transform:scaleX(1)}

/* ---------- Article head ---------- */
.article-head{padding:32px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb li[aria-current]{color:var(--ink-soft);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  background:var(--accent);color:var(--ink);font-size:11.5px;font-weight:700;letter-spacing:.06em;
}
.chip-outline{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--ink-soft);font-size:11.5px;font-weight:600;letter-spacing:.06em;
  background:#fff;
}
.article-title{
  font-size:clamp(28px,4.4vw,44px);line-height:1.24;letter-spacing:-.02em;font-weight:800;
  color:var(--ink);margin-top:18px;max-width:22ch;
}
.article-title-wide{max-width:26ch}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;padding-bottom:26px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-dot{width:5px;height:5px;background:var(--copper);border-radius:1px;display:inline-block}
.article-lead{
  margin-top:24px;padding:18px 22px;background:var(--paper-2);border-left:3px solid var(--copper);
  border-radius:0 12px 12px 0;color:var(--ink-soft);font-size:14.5px;line-height:1.85;max-width:70ch;
}

/* ---------- Layout ---------- */
.article-shell{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  padding:36px 0 88px;align-items:start;
}
@media(min-width:1024px){
  .article-shell{grid-template-columns:minmax(0,768px) 248px;gap:64px;justify-content:center;padding-top:44px;padding-bottom:104px;}
}
.article-main{min-width:0}

/* ---------- Prose ---------- */
.article-body{font-size:16.5px;line-height:1.95;color:var(--text);min-height:180px}
.article-body > * + *{margin-top:20px}
.article-body h2{
  font-size:clamp(22px,2.8vw,28px);line-height:1.4;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);margin-top:48px;padding-top:6px;scroll-margin-top:120px;position:relative;
}
.article-body h2::before{
  content:"";display:block;width:28px;height:3px;background:var(--copper);border-radius:2px;margin-bottom:14px;
}
.article-body h3{
  font-size:19px;line-height:1.5;font-weight:700;color:var(--ink);margin-top:32px;scroll-margin-top:120px;
}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-soft);margin-top:24px}
.article-body p{color:#1B1F1B}
.article-body a{color:var(--copper);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease)}
.article-body a:hover{color:var(--ink)}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body blockquote{
  margin:30px 0;padding:4px 0 4px 20px;border-left:3px solid var(--copper);
  color:var(--ink-soft);font-size:16px;line-height:1.9;background:linear-gradient(90deg,rgba(154,107,58,.06),transparent 60%);
}
.article-body blockquote p{margin:0}
.article-body ul,.article-body ol{padding-left:22px;display:flex;flex-direction:column;gap:10px}
.article-body ul > li{list-style:disc}
.article-body ol > li{list-style:decimal}
.article-body li::marker{color:var(--copper)}
.article-body img{border-radius:var(--radius-img);margin:28px auto;box-shadow:var(--shadow-1)}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:26px 0;background:#fff;border-radius:12px;overflow:hidden}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--paper-2);font-weight:700;color:var(--ink);font-size:13.5px;letter-spacing:.02em}
.article-body tr:last-child td{border-bottom:0}
.article-body tr:hover td{background:rgba(239,235,225,.5)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;
  background:var(--paper-2);padding:2px 6px;border-radius:6px;color:var(--ink-soft);
}
.article-body pre{
  background:var(--ink);color:var(--paper);padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:13.5px;line-height:1.7;margin:26px 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;font-size:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- Empty state ---------- */
.article-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
  padding:56px 24px;text-align:center;color:var(--muted);
}
.article-empty p{font-size:15px;margin-bottom:20px;color:var(--ink-soft)}

/* ---------- TOC ---------- */
.toc{
  position:sticky;top:96px;display:none;
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:20px 18px;box-shadow:var(--shadow-1);
}
@media(min-width:1024px){.toc{display:block}}
.toc-title{
  font-size:11.5px;letter-spacing:.16em;color:var(--muted);font-weight:700;
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.toc-title::before{content:"";width:6px;height:6px;background:var(--copper);display:inline-block}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:58vh;overflow-y:auto}
.toc-link{
  display:block;font-size:13px;line-height:1.55;color:var(--muted);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{color:var(--ink);background:var(--paper-2)}
.toc-link.is-current{color:var(--ink);font-weight:600;border-left-color:var(--accent);background:var(--paper-2)}
.toc-side-note{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);line-height:1.75}
.toc-side-note a{color:var(--copper)}
.toc-side-note a:hover{color:var(--ink)}

/* ---------- Tags & share ---------- */
.article-foot{margin-top:44px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12px;color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;background:#fff;transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{border-color:var(--ink);color:var(--ink);background:var(--paper-2)}
.share-row{display:flex;align-items:center;gap:10px}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:12.5px;color:var(--ink-soft);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.share-btn:hover{border-color:var(--ink);color:var(--ink);background:var(--paper-2)}
.share-hint{font-size:12px;color:var(--copper);opacity:0;transition:opacity .22s var(--ease)}
.share-hint.is-on{opacity:1}

/* ---------- Related ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:72px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.16em;color:var(--copper);font-weight:700}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--copper)}
.section-title{font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.3;margin-top:8px}
.section-sub{font-size:14px;color:var(--muted);margin-top:8px;max-width:60ch}
.text-link{font-size:13.5px;font-weight:600;color:var(--ink);position:relative;padding-bottom:2px;white-space:nowrap}
.text-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.text-link:hover::after{transform:scaleX(1)}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rcard{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rcard:hover{transform:translateY(-3px);border-color:var(--ink);box-shadow:var(--shadow-2)}
.rcard-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.rcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rcard:hover .rcard-media img{transform:scale(1.04)}
.rcard-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rcard-title{font-size:17px;font-weight:700;line-height:1.5;color:var(--ink)}
.rcard-desc{font-size:13.5px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard-foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}
.rcard-arrow{display:inline-flex;align-items:center;gap:5px;color:var(--ink-soft);font-weight:600;transition:color .2s var(--ease)}
.rcard:hover .rcard-arrow{color:var(--ink)}
.rcard:hover .rcard-arrow svg{transform:translateX(4px)}
.rcard-arrow svg{transition:transform .22s var(--ease)}

/* ---------- Back link ---------- */
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 88px}
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:20px;padding:44px 28px;
  display:flex;flex-direction:column;gap:26px;
}
@media(min-width:1024px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:56px 48px;gap:40px}}
.cta-title{font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
.cta-note{font-size:13.5px;color:rgba(247,245,239,.66);margin-top:12px;max-width:52ch;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-accent{background:var(--accent);color:var(--ink);box-shadow:none}
.btn-accent:hover{background:var(--paper);color:var(--ink)}
.btn-line{background:transparent;border-color:rgba(247,245,239,.34);color:var(--paper)}
.btn-line:hover{border-color:var(--paper);background:rgba(247,245,239,.08)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:48px}}
.site-footer .logo-text{color:var(--paper)}
.site-footer .logo-text small{color:rgba(247,245,239,.58)}
.footer-desc{color:rgba(247,245,239,.7);font-size:14px;line-height:1.8;margin-top:16px;max-width:36ch}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags a{
  font-size:12px;border:1px solid var(--line-dark);border-radius:999px;padding:5px 12px;
  color:rgba(247,245,239,.78);transition:border-color .2s var(--ease),color .2s var(--ease);
}
.footer-tags a:hover{border-color:var(--accent);color:var(--accent)}
.footer-title{
  font-size:11.5px;letter-spacing:.16em;color:var(--paper);font-weight:700;
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.footer-title::before{content:"";width:6px;height:6px;background:var(--copper);display:inline-block}
.footer-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(247,245,239,.72)}
.footer-list a{transition:color .2s var(--ease)}
.footer-list a:hover{color:var(--accent)}
.footer-contact li{list-style:none;line-height:1.8}
.footer-contact strong{color:var(--paper);font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:12.5px;color:rgba(247,245,239,.55);
}

/* ---------- Responsive ---------- */
@media(max-width:1023px){
  .channel-inner{gap:22px}
}
@media(max-width:767px){
  .header-brand{height:60px}
  .logo-text{font-size:15px}
  .logo-text small{display:none}
  .search-box{display:none}
  .link-quiet{display:none}
  .brand-actions{gap:10px}
  .channel-inner{height:48px;gap:20px;padding-right:24px;
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent 100%);
    mask-image:linear-gradient(90deg,#000 88%,transparent 100%);}
  .channel{line-height:48px;font-size:13.5px}
  .article-head{padding-top:24px}
  .meta-row{gap:8px 16px;font-size:12.5px}
  .article-shell{padding-bottom:64px;gap:36px}
  .cta-wrap{padding-bottom:64px}
  .cta-actions .btn{width:100%}
  .back-row .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .rcard:hover{transform:none}
  .rcard:hover .rcard-media img{transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#101310;
  --ink-soft:#2A302A;
  --paper:#F7F5EF;
  --paper-2:#EFEBE1;
  --line:#DCD6C8;
  --line-dark:#2C332C;
  --accent:#C7F04A;
  --copper:#9A6B3A;
  --text:#1B1F1B;
  --muted:#5C625B;
  --white:#FFFFFF;
  --r-card:18px;
  --r-img:14px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,19,16,.06);
  --sh-2:0 14px 34px -18px rgba(16,19,16,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
  --pad-x:20px;
  --sec-y:64px;
}
@media (min-width:640px){ :root{ --pad-x:32px; --sec-y:88px; } }
@media (min-width:1024px){ :root{ --pad-x:48px; --sec-y:112px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; background:var(--paper-2); }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; }
h1,h2,h3,h4,p,ul,ol,figure{ margin:0; }
ul,ol{ padding:0; list-style:none; }
.num{ font-family:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace; font-variant-numeric:tabular-nums; }
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
.container{ width:100%; max-width:1240px; margin:0 auto; padding-left:var(--pad-x); padding-right:var(--pad-x); }
.section{ padding-top:var(--sec-y); padding-bottom:var(--sec-y); }
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-size:12px; letter-spacing:.16em; color:var(--copper);
  font-weight:700; text-transform:uppercase;
}
.eyebrow::before{ content:""; width:16px; height:2px; background:var(--copper); display:block; }
.section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.section-title{ font-size:clamp(24px,3.4vw,40px); line-height:1.15; font-weight:800; letter-spacing:-.02em; margin-top:14px; }
.section-sub{ color:var(--muted); font-size:15px; margin-top:12px; max-width:62ch; }

/* ---------- Header ---------- */
.site-header{ position:sticky; top:0; z-index:60; background:rgba(247,245,239,.94); backdrop-filter:blur(8px); transition:box-shadow .22s var(--ease), border-color .22s var(--ease); border-bottom:1px solid transparent; }
.site-header.is-scrolled{ border-bottom-color:var(--line); box-shadow:0 8px 22px -20px rgba(16,19,16,.5); }
.header-brand{ border-bottom:1px solid var(--line); }
.brand-inner{ display:flex; align-items:center; justify-content:space-between; gap:20px; min-height:72px; }
.logo{ display:inline-flex; align-items:center; gap:10px; }
.logo-mark{ display:inline-flex; }
.logo-text{ display:flex; flex-direction:column; font-size:18px; font-weight:800; letter-spacing:-.01em; line-height:1.2; color:var(--ink); }
.logo-text small{ font-size:11px; font-weight:500; letter-spacing:.06em; color:var(--muted); margin-top:4px; }
.brand-actions{ display:flex; align-items:center; gap:14px; }
.search-box{
  display:flex; align-items:center; gap:8px;
  height:40px; padding:0 6px 0 12px;
  background:var(--paper-2); border:1px solid var(--line);
  border-radius:var(--r-pill); width:250px;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.search-box:focus-within{ border-color:var(--ink); background:#fff; }
.search-box input{ flex:1; min-width:0; border:0; background:transparent; font-size:13px; color:var(--text); outline:none; }
.search-box input::placeholder{ color:#8B9089; }
.search-box button{ display:inline-flex; align-items:center; justify-content:center; width:30px; height:30px; border:0; border-radius:var(--r-pill); background:var(--ink); color:var(--paper); cursor:pointer; transition:background .2s var(--ease), color .2s var(--ease); }
.search-box button:hover{ background:var(--accent); color:var(--ink); }
.link-quiet{ font-size:14px; color:var(--ink-soft); position:relative; transition:color .2s var(--ease); }
.link-quiet:hover{ color:var(--ink); }
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border-radius:var(--r-pill); border:1px solid transparent;
  font-weight:700; cursor:pointer; white-space:nowrap;
  transition:background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease);
}
.btn-primary{ background:var(--ink); color:var(--paper); }
.btn-primary:hover{ background:var(--accent); color:var(--ink); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-sm{ height:38px; padding:0 18px; font-size:13px; }
.btn-lg{ height:50px; padding:0 28px; font-size:15px; }
.header-channels{ border-bottom:1px solid var(--line); }
.channel-inner{ display:flex; align-items:center; gap:28px; height:52px; overflow-x:auto; scrollbar-width:none; -ms-overflow-style:none; }
.channel-inner::-webkit-scrollbar{ display:none; }
.channel{
  position:relative; font-size:14px; color:var(--ink-soft); white-space:nowrap;
  height:52px; display:inline-flex; align-items:center; transition:color .2s var(--ease);
}
.channel::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--accent); transform:scaleX(0); transform-origin:left;
  transition:transform .22s var(--ease);
}
.channel:hover{ color:var(--ink); }
.channel:hover::after{ transform:scaleX(1); }
.channel.is-active{ color:var(--ink); font-weight:700; }
.channel.is-active::after{ transform:scaleX(1); }

/* ---------- Breadcrumb ---------- */
.crumb-wrap{ padding-top:26px; }
.crumb{ display:flex; flex-wrap:wrap; align-items:center; gap:8px; font-size:13px; color:var(--muted); }
.crumb li{ display:inline-flex; align-items:center; gap:8px; }
.crumb li+li::before{ content:"/"; color:#B4AEA0; }
.crumb a:hover{ color:var(--ink); text-decoration:underline; text-underline-offset:4px; }
.crumb .current{ color:var(--ink); font-weight:700; }

/* ---------- Category hero ---------- */
.cat-hero{ padding-top:28px; }
.cat-hero-grid{ display:grid; grid-template-columns:1fr; gap:28px; align-items:end; }
@media (min-width:1024px){ .cat-hero-grid{ grid-template-columns:1.35fr .65fr; gap:48px; } }
.cat-h1{
  font-size:clamp(32px,5vw,58px); line-height:1.08; letter-spacing:-.025em;
  font-weight:800; margin-top:16px; max-width:22ch;
}
.cat-h1 em{ font-style:normal; box-shadow:inset 0 -.32em 0 var(--accent); }
.cat-lead{ margin-top:20px; font-size:16px; color:var(--muted); max-width:56ch; }
.hero-metrics{ display:flex; flex-wrap:wrap; gap:24px; margin-top:28px; }
.hero-metric{ padding-left:14px; border-left:1px solid var(--line); }
.hero-metric:first-child{ padding-left:0; border-left:0; }
.hero-metric strong{ display:block; font-size:24px; font-weight:800; letter-spacing:-.02em; line-height:1.2; font-family:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace; }
.hero-metric span{ font-size:12px; color:var(--muted); letter-spacing:.06em; }
.hero-figure{ position:relative; border-radius:20px; overflow:hidden; border:1px solid var(--line); box-shadow:var(--sh-1); }
.hero-figure img{ width:100%; aspect-ratio:4/3; object-fit:cover; }
.hero-figure figcaption{
  position:absolute; left:14px; bottom:14px;
  background:var(--accent); color:var(--ink);
  font-size:12px; font-weight:700; padding:6px 14px; border-radius:var(--r-pill);
}

/* ---------- Filter bar ---------- */
.filter-bar{ margin-top:36px; padding-top:22px; border-top:1px solid var(--line); display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.filter-label{ font-size:12px; letter-spacing:.14em; color:var(--copper); font-weight:700; }
.chip-row{ display:flex; gap:10px; flex-wrap:wrap; }
.chip{
  border:1px solid var(--line); background:transparent; color:var(--ink-soft);
  height:36px; padding:0 16px; border-radius:var(--r-pill); font-size:13px; cursor:pointer;
  transition:border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.chip:hover{ border-color:var(--ink); color:var(--ink); }
.chip[aria-pressed="true"]{ background:var(--ink); border-color:var(--ink); color:var(--paper); font-weight:700; }
.chip-note{ font-size:13px; color:var(--muted); margin-left:auto; }

/* ---------- Card wall ---------- */
.wall{ margin-top:32px; display:grid; gap:20px; grid-template-columns:1fr; }
@media (min-width:640px){ .wall{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (min-width:1024px){ .wall{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
@media (min-width:1280px){ .wall{ grid-template-columns:repeat(4,minmax(0,1fr)); gap:24px; } }
.game-card{
  display:flex; flex-direction:column; background:var(--white);
  border:1px solid var(--line); border-radius:var(--r-card); overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.game-card:hover{ transform:translateY(-3px); box-shadow:var(--sh-2); border-color:#C6BEA9; }
.game-media{ position:relative; overflow:hidden; background:var(--paper-2); }
.game-media img{ width:100%; aspect-ratio:4/3; object-fit:cover; transition:transform .26s var(--ease); }
.game-card:hover .game-media img{ transform:scale(1.04); }
.game-tag{
  position:absolute; top:12px; left:12px;
  background:var(--accent); color:var(--ink);
  font-size:11px; font-weight:700; letter-spacing:.04em;
  padding:4px 10px; border-radius:var(--r-pill);
}
.game-body{ display:flex; flex-direction:column; flex:1; padding:16px 16px 18px; }
.game-name{ font-size:17px; font-weight:800; line-height:1.4; letter-spacing:-.01em; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.game-desc{ margin-top:8px; font-size:14px; line-height:1.7; color:var(--muted); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.game-foot{ margin-top:auto; padding-top:14px; display:flex; align-items:center; justify-content:space-between; gap:10px; border-top:1px solid var(--line); }
.game-spec{ font-size:12px; color:var(--ink-soft); font-family:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace; }
.card-arrow{
  display:inline-flex; align-items:center; gap:6px; font-size:13px; font-weight:700; color:var(--ink);
  transition:color .2s var(--ease);
}
.card-arrow svg{ transition:transform .2s var(--ease); }
.card-arrow:hover{ color:var(--copper); }
.card-arrow:hover svg{ transform:translateX(4px); }

/* ---------- Spec list ---------- */
.spec-block{ background:var(--paper-2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.spec-grid{ display:grid; grid-template-columns:1fr; gap:0; }
@media (min-width:1024px){ .spec-grid{ grid-template-columns:.85fr 1.15fr; gap:56px; align-items:start; } }
.spec-list{ border-top:1px solid var(--line); }
.spec-item{ display:grid; grid-template-columns:44px 1fr; gap:16px; padding:20px 0; border-bottom:1px solid var(--line); }
.spec-no{ font-family:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace; font-size:13px; font-weight:700; color:var(--copper); padding-top:3px; }
.spec-item h3{ font-size:17px; font-weight:800; letter-spacing:-.01em; }
.spec-item p{ margin-top:6px; font-size:14px; color:var(--muted); }

/* ---------- FAQ ---------- */
.faq-grid{ margin-top:28px; display:grid; grid-template-columns:1fr; gap:0 48px; }
@media (min-width:1024px){ .faq-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-item:first-child{ border-top:1px solid var(--line); }
.faq-item summary{
  list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:18px 0; font-size:17px; font-weight:700; letter-spacing:-.01em;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary .plus{ flex:none; display:inline-flex; transition:transform .22s var(--ease); color:var(--copper); }
.faq-item[open] summary .plus{ transform:rotate(45deg); }
.faq-item p{ padding:0 0 20px; font-size:15px; line-height:1.8; color:var(--muted); max-width:60ch; }

/* ---------- Narrow CTA ---------- */
.cta-narrow{ background:var(--ink); border-radius:20px; padding:36px 28px; display:grid; gap:22px; align-items:center; }
@media (min-width:900px){ .cta-narrow{ grid-template-columns:1fr auto; padding:44px 48px; } }
.cta-narrow h2{ color:var(--paper); font-size:clamp(22px,2.8vw,32px); line-height:1.2; font-weight:800; letter-spacing:-.02em; }
.cta-narrow p{ color:#B9BFB4; font-size:14px; margin-top:10px; }
.btn-accent{ background:var(--accent); color:var(--ink); }
.btn-accent:hover{ background:var(--paper); color:var(--ink); }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:var(--paper); margin-top:var(--sec-y); padding:64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1fr; gap:36px; }
@media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (min-width:1024px){ .footer-grid{ grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:40px; } }
.footer-brand .logo-text{ color:var(--paper); }
.footer-brand .logo-text small{ color:#9AA294; }
.footer-desc{ margin-top:16px; font-size:14px; color:#B9BFB4; max-width:34ch; }
.footer-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:18px; }
.footer-tags a{ font-size:12px; padding:5px 12px; border:1px solid var(--line-dark); border-radius:var(--r-pill); color:#D6DBD2; transition:color .2s var(--ease), border-color .2s var(--ease); }
.footer-tags a:hover{ color:var(--accent); border-color:var(--accent); }
.footer-title{ display:flex; align-items:center; gap:8px; font-size:12px; letter-spacing:.16em; color:#9AA294; font-weight:700; }
.footer-title::before{ content:""; width:8px; height:8px; background:var(--copper); display:block; }
.footer-list{ margin-top:16px; display:flex; flex-direction:column; gap:10px; font-size:14px; color:#C9CFC4; }
.footer-list a:hover{ color:var(--accent); }
.footer-contact li{ line-height:1.8; }
.footer-contact strong{ color:var(--paper); font-weight:600; }
.footer-bottom{ margin-top:44px; padding-top:20px; border-top:1px solid var(--line-dark); display:flex; flex-wrap:wrap; gap:12px 24px; justify-content:space-between; font-size:12px; color:#8E9586; }

/* ---------- Motion / reduced ---------- */
.fade-up{ opacity:0; transform:translateY(12px); animation:fadeUp .5s var(--ease) forwards; }
@keyframes fadeUp{ to{ opacity:1; transform:none; } }
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .fade-up{ opacity:1; transform:none; }
}
@media (max-width:639px){
  .brand-actions .search-box{ display:none; }
  .brand-actions .link-quiet{ display:none; }
  .brand-inner{ min-height:60px; }
  .cat-h1{ max-width:none; }
  .chip-note{ margin-left:0; width:100%; }
}

/* roulang page: category2 */
:root{
  --ink:#101310;
  --ink-soft:#2A302A;
  --paper:#F7F5EF;
  --paper-2:#EFEBE1;
  --line:#DCD6C8;
  --line-dark:#2C332C;
  --accent:#C7F04A;
  --copper:#9A6B3A;
  --text:#1B1F1B;
  --muted:#5C625B;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(16,19,16,.06);
  --shadow-2:0 14px 34px -18px rgba(16,19,16,.22);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:var(--paper-2);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:640px){.container{padding:0 32px;}}
@media(min-width:1024px){.container{padding:0 48px;}}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,239,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px -22px rgba(16,19,16,.45);}
.header-brand{border-bottom:1px solid var(--line);}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.logo-mark{display:inline-flex;}
.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.16;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
}
.logo-text small{
  font-size:11px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--muted);
  margin-top:3px;
}
.brand-actions{display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 4px 0 14px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-box:focus-within{
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(199,240,74,.55);
}
.search-box input{
  width:208px;
  border:0;
  background:transparent;
  outline:none;
  font-size:13px;
  color:var(--text);
  font-family:inherit;
}
.search-box input::placeholder{color:#8C928B;font-size:13px;}
.search-box button{
  width:32px;height:32px;
  display:grid;place-items:center;
  border:0;border-radius:999px;
  background:var(--ink);
  color:var(--paper);
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.search-box button:hover{background:var(--accent);color:var(--ink);}
.link-quiet{
  position:relative;
  font-size:14px;
  color:var(--ink-soft);
  white-space:nowrap;
}
.link-quiet::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-3px;
  height:1px;
  background:var(--ink);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.link-quiet:hover::after{transform:scaleX(1);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--accent);color:var(--ink);}
.btn-secondary{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-secondary:hover{border-color:var(--ink);}
.btn-secondary .arrow{transition:transform .22s var(--ease);}
.btn-secondary:hover .arrow{transform:translateX(4px);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#D7FA6B;}
.btn-sm{height:40px;padding:0 18px;font-size:13px;}

.header-channels{border-bottom:0;}
.channel-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.channel-inner::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:100%;
  font-size:14px;
  color:var(--ink-soft);
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.channel::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.channel:hover{color:var(--ink);}
.channel:hover::after{transform:scaleX(1);}
.channel.is-active{color:var(--ink);font-weight:600;}
.channel.is-active::after{transform:scaleX(1);}

@media(max-width:1023px){
  .search-box input{width:132px;}
  .channel-inner{gap:22px;}
}
@media(max-width:767px){
  .brand-inner{min-height:60px;gap:12px;}
  .search-box{display:none;}
  .link-quiet{display:none;}
  .logo-text{font-size:16px;}
  .logo-text small{font-size:10px;letter-spacing:.04em;}
  .channel-inner{height:48px;gap:18px;}
  .channel{font-size:13px;}
  .btn-sm{height:36px;padding:0 14px;font-size:12px;}
}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#B9B3A4;}
.crumb a{color:var(--muted);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--ink);}
.crumb .current{color:var(--ink-soft);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{padding:30px 0 56px;}
.hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  align-items:center;
}
@media(min-width:1024px){
  .hero-grid{grid-template-columns:1.02fr .98fr;gap:56px;}
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--copper);
  font-weight:600;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:8px;height:8px;
  background:var(--copper);
  display:inline-block;
}
h1.page-title{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.1;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--ink);
  max-width:16em;
}
.hero-lead{
  margin-top:20px;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
  max-width:34em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:34px;
  border-top:1px solid var(--line);
  padding-top:20px;
}
.hero-stat{
  padding-right:16px;
  border-right:1px solid var(--line);
}
.hero-stat:last-child{border-right:0;padding-right:0;padding-left:16px;}
.hero-stat:nth-child(2){padding-left:16px;}
.hero-stat b{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
}
.hero-stat span{font-size:12px;color:var(--muted);letter-spacing:.04em;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:20px;
  border:1px solid var(--line);
}
.hero-badge{
  position:absolute;
  left:18px;
  bottom:18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  background:var(--accent);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  box-shadow:var(--shadow-1);
}
@media(max-width:639px){
  .hero-media img{aspect-ratio:4/3;}
  .hero-actions .btn{flex:1 1 100%;}
}

/* ---------- Quick steps ---------- */
.quick-steps{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
}
.step-row{
  display:grid;
  grid-template-columns:1fr;
  gap:0;
}
@media(min-width:768px){
  .step-row{grid-template-columns:repeat(4,1fr);}
}
.step-item{
  display:flex;
  gap:14px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
@media(min-width:768px){
  .step-item{
    padding:26px 22px;
    border-bottom:0;
    border-right:1px solid var(--line);
  }
  .step-item:first-child{padding-left:0;}
  .step-item:last-child{border-right:0;padding-right:0;}
}
.step-item:last-child{border-bottom:0;}
.step-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--copper);
  padding-top:2px;
}
.step-item h4{font-size:15px;font-weight:700;color:var(--ink);}
.step-item p{font-size:13px;line-height:1.65;color:var(--muted);margin-top:4px;}

/* ---------- Section base ---------- */
.section{padding:64px 0;}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.18;
  letter-spacing:-.015em;
  font-weight:800;
  color:var(--ink);
}
.section-head p{
  font-size:14px;
  color:var(--muted);
  max-width:36em;
  margin-top:12px;
}

/* ---------- Chapters ---------- */
.chapter-list{border-top:1px solid var(--line);}
.chapter{
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  padding:40px 0;
  border-bottom:1px solid var(--line);
}
@media(min-width:1024px){
  .chapter{
    grid-template-columns:1.04fr .96fr;
    gap:56px;
    align-items:center;
    padding:52px 0;
  }
  .chapter.is-reverse .chapter-media{order:-1;}
}
.chapter-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  transition:transform .26s var(--ease);
}
.chapter-media{overflow:hidden;border-radius:var(--radius-img);}
.chapter-media:hover img{transform:scale(1.03);}
.chapter-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,4.6vw,52px);
  font-weight:700;
  line-height:1;
  color:var(--copper);
  letter-spacing:-.03em;
  margin-bottom:12px;
}
.chapter h3{
  font-size:clamp(20px,2.3vw,26px);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
  margin-bottom:14px;
}
.chapter p{font-size:15px;line-height:1.9;color:var(--ink-soft);max-width:38em;}
.chapter p+p{margin-top:12px;}
.dot-list{margin-top:16px;display:grid;gap:9px;}
.dot-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-soft);
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:7px;
  background:var(--copper);
}
.chapter-note{
  margin-top:18px;
  padding:14px 16px;
  border-left:2px solid var(--copper);
  background:var(--paper-2);
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
  border-radius:0 var(--radius-input) var(--radius-input) 0;
}

/* ---------- Info cards ---------- */
.info-section{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.info-cards{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.info-cards{grid-template-columns:1fr 1fr;gap:28px;}}
.info-card{
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#C9C2B0;}
@media(min-width:640px){.info-card{padding:32px;}}
.info-card .tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:var(--accent);
  color:var(--ink);
  font-size:11px;
  font-weight:700;
  letter-spacing:.06em;
}
.info-card h3{
  margin-top:14px;
  font-size:19px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
}
.info-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);}
.line-list{margin-top:16px;border-top:1px solid var(--line);}
.line-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-soft);
}
.line-list li:last-child{border-bottom:0;padding-bottom:0;}
.line-list .k{
  flex:0 0 76px;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  color:var(--copper);
  font-weight:700;
  padding-top:2px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0;
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  flex:0 0 20px;
  width:20px;height:20px;
  background:
    linear-gradient(var(--ink-soft),var(--ink-soft)) center/12px 1.5px no-repeat,
    linear-gradient(var(--ink-soft),var(--ink-soft)) center/1.5px 12px no-repeat;
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{
  transform:rotate(45deg);
  background:
    linear-gradient(var(--copper),var(--copper)) center/12px 1.5px no-repeat,
    linear-gradient(var(--copper),var(--copper)) center/1.5px 12px no-repeat;
}
.faq-item summary:hover{color:var(--copper);}
.faq-answer{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:46em;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  padding:56px 0;
}
@media(min-width:1024px){.cta-band{padding:72px 0;}}
.cta-inner{
  display:flex;
  flex-direction:column;
  gap:24px;
  align-items:flex-start;
}
@media(min-width:1024px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:48px;}
}
.cta-inner h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.2;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--paper);
}
.cta-inner p{margin-top:10px;font-size:14px;color:rgba(247,245,239,.72);max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media(max-width:639px){.cta-actions{width:100%;}.cta-actions .btn{flex:1 1 100%;}}
.btn-ghost{background:transparent;border-color:rgba(247,245,239,.32);color:var(--paper);}
.btn-ghost:hover{border-color:var(--paper);background:rgba(247,245,239,.08);}

/* ---------- Return bar ---------- */
.return-bar{padding:36px 0 8px;}
.return-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px 24px;
  background:#FFFFFF;
}
.return-inner p{font-size:14px;color:var(--muted);}
.return-links{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--paper);
  margin-top:56px;
  padding:56px 0 28px;
}
@media(min-width:1024px){.site-footer{padding:72px 0 32px;}}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;}}
.site-footer .logo-text{color:var(--paper);}
.site-footer .logo-text small{color:rgba(247,245,239,.6);}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,245,239,.7);
  max-width:30em;
}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-tags a{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border:1px solid var(--line-dark);
  border-radius:999px;
  font-size:12px;
  color:rgba(247,245,239,.78);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-tags a:hover{color:var(--accent);border-color:var(--accent);}
.footer-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  font-weight:700;
  color:rgba(247,245,239,.6);
  margin-bottom:16px;
}
.footer-title::before{
  content:"";
  width:7px;height:7px;
  background:var(--copper);
}
.footer-list{display:grid;gap:11px;}
.footer-list a,
.footer-list li{
  font-size:14px;
  line-height:1.7;
  color:rgba(247,245,239,.76);
  transition:color .2s var(--ease);
}
.footer-list a:hover{color:var(--accent);}
.footer-contact strong{color:var(--paper);font-weight:600;}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12px;
  color:rgba(247,245,239,.55);
}
@media(max-width:639px){
  .site-footer{padding:44px 0 24px;}
  .footer-bottom{font-size:11px;}
}

/* ---------- Motion ---------- */
.fade-up{
  opacity:0;
  transform:translateY(12px);
  animation:fadeUp .5s var(--ease) forwards;
}
@keyframes fadeUp{
  to{opacity:1;transform:translateY(0);}
}
.fade-up.d1{animation-delay:.06s;}
.fade-up.d2{animation-delay:.12s;}
.fade-up.d3{animation-delay:.18s;}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
    --ink:#101310;
    --ink-soft:#2A302A;
    --paper:#F7F5EF;
    --paper-2:#EFEBE1;
    --line:#DCD6C8;
    --line-dark:#2C332C;
    --accent:#C7F04A;
    --copper:#9A6B3A;
    --text:#1B1F1B;
    --muted:#5C625B;
    --radius-btn:999px;
    --radius-card:18px;
    --radius-img:14px;
    --radius-field:10px;
    --shadow-1:0 1px 2px rgba(16,19,16,.06);
    --shadow-2:0 14px 34px -18px rgba(16,19,16,.22);
    --ease:cubic-bezier(.2,.7,.2,1);
    --dur:220ms;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;line-height:1.85;
    color:var(--text);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,textarea,select{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}
  @media (min-width:1024px){.container{padding:0 48px}}

  .num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

  /* ---------- Header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:var(--paper);transition:box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease)}
  .site-header.is-scrolled{background:rgba(247,245,239,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
  .header-brand{border-bottom:1px solid var(--line)}
  .brand-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;padding-top:8px;padding-bottom:8px}
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{display:inline-flex}
  .logo-text{display:flex;flex-direction:column;font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.2;color:var(--ink)}
  .logo-text small{font-size:11px;font-weight:400;color:var(--muted);letter-spacing:.06em;margin-top:3px}
  .brand-actions{display:flex;align-items:center;gap:14px}
  .search-box{display:none;align-items:center;gap:8px;height:42px;padding:0 8px 0 14px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-btn);transition:border-color var(--dur) var(--ease)}
  .search-box:focus-within{border-color:var(--ink)}
  .search-box input{width:190px;border:0;background:transparent;font-size:13px;outline:none}
  .search-box input::placeholder{color:#93998F}
  .search-box button{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--ink);color:var(--paper);transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease)}
  .search-box button:hover{background:var(--accent);color:var(--ink)}
  .link-quiet{display:none;font-size:14px;color:var(--ink-soft);position:relative;padding-bottom:2px}
  .link-quiet::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
  .link-quiet:hover::after{transform:scaleX(1)}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--radius-btn);font-size:14px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease)}
  .btn-sm{height:40px;padding:0 18px;font-size:13px}
  .btn-primary{background:var(--ink);color:var(--paper)}
  .btn-primary:hover{background:var(--accent);color:var(--ink)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--ink)}
  .btn-ghost .arrow{transition:transform var(--dur) var(--ease)}
  .btn-ghost:hover .arrow{transform:translateX(4px)}
  .btn-accent{background:var(--accent);color:var(--ink)}
  .btn-accent:hover{background:var(--paper);color:var(--ink)}
  .btn:active{transform:translateY(1px)}
  .btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

  .header-channels{border-bottom:1px solid var(--line)}
  .channel-inner{display:flex;align-items:center;gap:24px;height:52px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .channel-inner::-webkit-scrollbar{display:none}
  .channel{position:relative;flex:0 0 auto;font-size:14px;color:var(--muted);line-height:52px;white-space:nowrap;transition:color var(--dur) var(--ease)}
  .channel::after{content:"";position:absolute;left:0;right:0;bottom:11px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
  .channel:hover{color:var(--ink)}
  .channel:hover::after{transform:scaleX(1)}
  .channel.is-active{color:var(--ink);font-weight:600}
  .channel.is-active::after{transform:scaleX(1)}
  @media (min-width:1024px){
    .search-box{display:flex}
    .link-quiet{display:inline-block}
    .channel-inner{gap:32px}
  }

  /* ---------- 面包屑 ---------- */
  .crumbs{padding:22px 0 0}
  .crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
  .crumbs li{display:flex;align-items:center;gap:8px}
  .crumbs li::after{content:"/";color:var(--line);font-size:12px}
  .crumbs li:last-child::after{content:""}
  .crumbs a{transition:color var(--dur) var(--ease)}
  .crumbs a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
  .crumbs [aria-current]{color:var(--ink-soft);font-weight:600}

  /* ---------- 通用排版 ---------- */
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--copper);font-weight:600}
  .eyebrow::before{content:"";width:8px;height:8px;background:var(--copper);border-radius:2px}
  h2.section-title{font-size:clamp(24px,3.4vw,40px);line-height:1.15;letter-spacing:-.02em;font-weight:800;color:var(--ink)}
  .section-lead{margin-top:14px;font-size:15px;color:var(--muted);max-width:62ch}
  .section{padding:64px 0}
  @media (min-width:768px){.section{padding:88px 0}}
  @media (min-width:1024px){.section{padding:112px 0}}

  /* ---------- Hero ---------- */
  .page-hero{padding:32px 0 8px}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
  .hero-h1{font-size:clamp(32px,5.4vw,60px);line-height:1.08;letter-spacing:-.02em;font-weight:800;color:var(--ink);margin-top:16px}
  .hero-h1 span{display:block}
  .hero-h1 .kw{color:var(--copper)}
  .hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:var(--ink-soft);max-width:56ch}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-cta .btn{width:100%}
  @media (min-width:640px){.hero-cta .btn{width:auto}}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
  .metric{flex:1 1 33%;min-width:110px;padding-right:16px}
  .metric + .metric{border-left:1px solid var(--line);padding-left:16px}
  .metric b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
  .metric span{display:block;font-size:12px;color:var(--muted);margin-top:2px;letter-spacing:.04em}
  .hero-media{position:relative;border-radius:20px;overflow:hidden;background:var(--paper-2);box-shadow:var(--shadow-1)}
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .hero-media .badge{position:absolute;left:16px;top:16px;display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-btn);background:var(--accent);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.02em}
  .hero-media .corner{position:absolute;right:16px;bottom:16px;padding:10px 14px;border-radius:12px;background:rgba(16,19,16,.86);color:var(--paper);font-size:12px;letter-spacing:.04em}
  @media (min-width:1024px){
    .page-hero{padding:44px 0 20px}
    .hero-grid{grid-template-columns:6fr 6fr;gap:48px}
    .hero-media img{aspect-ratio:1/1}
  }

  /* ---------- 价值清单 ---------- */
  .value-list{margin-top:36px;border-top:1px solid var(--line)}
  .value-item{display:grid;grid-template-columns:auto 1fr;gap:16px;padding:26px 0;border-bottom:1px solid var(--line);transition:background-color var(--dur) var(--ease)}
  .value-item:hover{background:rgba(239,235,225,.5)}
  .value-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.1em;color:var(--copper);padding-top:7px}
  .value-item h3{font-size:19px;line-height:1.4;font-weight:700;color:var(--ink)}
  .value-item p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--muted);max-width:70ch}
  .value-note{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:12px;color:var(--copper);letter-spacing:.04em}
  @media (min-width:768px){
    .value-item{grid-template-columns:72px 1fr;gap:24px;padding:30px 0}
    .value-item h3{font-size:21px}
  }

  /* ---------- 保障条 ---------- */
  .guarantee-bar{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .guarantee-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}
  .guarantee-item{display:flex;align-items:flex-start;gap:12px;padding:22px 16px 22px 0;border-bottom:1px solid var(--line)}
  .guarantee-item:nth-child(2n){padding-left:16px;border-left:1px solid var(--line)}
  .guarantee-item:nth-child(n+3){border-bottom:0}
  .guarantee-item svg{flex:0 0 auto;margin-top:3px;color:var(--copper)}
  .guarantee-item strong{display:block;font-size:14px;font-weight:700;color:var(--ink);line-height:1.5}
  .guarantee-item span{display:block;font-size:12px;color:var(--muted);line-height:1.6;margin-top:2px}
  @media (min-width:768px){
    .guarantee-grid{grid-template-columns:repeat(4,1fr)}
    .guarantee-item{border-bottom:0;border-left:1px solid var(--line);padding:26px 20px}
    .guarantee-item:first-child{border-left:0;padding-left:0}
    .guarantee-item:nth-child(2n){border-left:1px solid var(--line);padding-left:20px}
    .guarantee-item:first-child{border-left:0}
  }

  /* ---------- 服务表 + 表单 ---------- */
  .service-grid{display:grid;grid-template-columns:1fr;gap:36px;margin-top:40px}
  .table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
  .table-scroll{overflow-x:auto}
  table.compare{width:100%;border-collapse:collapse;min-width:620px;font-size:14px}
  table.compare caption{text-align:left;padding:18px 20px 0;font-size:13px;color:var(--muted)}
  table.compare thead th{background:var(--ink);color:var(--paper);text-align:left;padding:14px 18px;font-size:13px;font-weight:600;letter-spacing:.04em;white-space:nowrap}
  table.compare tbody td{padding:15px 18px;border-top:1px solid var(--line);color:var(--ink-soft);vertical-align:top;line-height:1.7}
  table.compare tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
  table.compare tbody tr{transition:background-color var(--dur) var(--ease)}
  table.compare tbody tr:hover{background:var(--paper-2)}
  table.compare .tag{display:inline-block;padding:2px 10px;border-radius:var(--radius-btn);background:var(--paper-2);border:1px solid var(--line);font-size:12px;color:var(--ink-soft);white-space:nowrap}
  table.compare .tag.hot{background:var(--accent);border-color:var(--accent);color:var(--ink);font-weight:600}
  .table-note{padding:14px 20px 18px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);background:var(--paper)}

  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1)}
  .form-card h3{font-size:20px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
  .form-card .form-hint{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.7}
  .field{margin-top:18px}
  .field label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px;letter-spacing:.02em}
  .field input,.field textarea{width:100%;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-field);padding:0 14px;height:48px;font-size:14px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease)}
  .field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:#93998F;font-size:13px}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--ink);background:#fff;box-shadow:0 0 0 2px var(--accent)}
  .field.invalid input,.field.invalid textarea{border-color:var(--copper)}
  .field .err{display:none;margin-top:6px;font-size:12px;color:var(--copper)}
  .field.invalid .err{display:block}
  .form-card .btn{width:100%;margin-top:22px}
  .privacy{margin-top:12px;font-size:12px;line-height:1.7;color:var(--muted)}
  .form-feedback{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-field);background:var(--paper-2);border:1px solid var(--line);font-size:13px;color:var(--ink-soft)}
  .form-feedback.show{display:block}
  @media (min-width:1024px){
    .service-grid{grid-template-columns:7fr 5fr;gap:40px;align-items:start}
    .form-card{padding:28px}
  }

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:36px;display:grid;grid-template-columns:1fr;gap:0}
  .faq-item{border-top:1px solid var(--line)}
  .faq-item:last-child{border-bottom:1px solid var(--line)}
  .faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color var(--dur) var(--ease)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--copper)}
  .faq-plus{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;color:var(--copper);transition:transform var(--dur) var(--ease)}
  .faq-item[open] .faq-plus{transform:rotate(45deg)}
  .faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-soft);max-width:80ch}
  @media (min-width:1024px){
    .faq-list{grid-template-columns:1fr 1fr;column-gap:56px}
    .faq-item:nth-child(1){border-top:1px solid var(--line)}
  }

  /* ---------- CTA ---------- */
  .cta-band{background:var(--ink);color:var(--paper)}
  .cta-inner{display:grid;grid-template-columns:1fr;gap:26px;align-items:center;padding:56px 0}
  .cta-inner h2{font-size:clamp(24px,3.4vw,38px);line-height:1.15;letter-spacing:-.02em;font-weight:800;color:var(--paper)}
  .cta-inner p{margin-top:12px;font-size:14px;color:#C9CEC6;max-width:52ch}
  .cta-inner .btn{width:100%}
  @media (min-width:768px){
    .cta-inner{grid-template-columns:1fr auto;padding:72px 0;gap:40px}
    .cta-inner .btn{width:auto;height:52px;padding:0 30px;font-size:15px}
  }

  /* ---------- Footer ---------- */
  .site-footer{background:var(--ink);color:var(--paper);padding:56px 0 0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
  .footer-brand .logo-text{color:var(--paper)}
  .footer-brand .logo-text small{color:#A9B0A7}
  .footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:#C9CEC6;max-width:34ch}
  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
  .footer-tags a{display:inline-block;padding:5px 12px;border:1px solid var(--line-dark);border-radius:var(--radius-btn);font-size:12px;color:#C9CEC6;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
  .footer-tags a:hover{color:var(--accent);border-color:var(--accent)}
  .footer-title{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:#A9B0A7;margin-bottom:16px}
  .footer-title::before{content:"";width:8px;height:8px;background:var(--copper);border-radius:2px}
  .footer-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:#C9CEC6}
  .footer-list a{transition:color var(--dur) var(--ease)}
  .footer-list a:hover{color:var(--accent)}
  .footer-contact li{line-height:1.75}
  .footer-contact strong{color:var(--paper);font-weight:600}
  .footer-bottom{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;margin-top:44px;padding:20px 0 26px;border-top:1px solid var(--line-dark);font-size:12px;color:#8E958C}
  @media (min-width:768px){
    .site-footer{padding-top:64px}
    .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px}
  }

  /* ---------- 动效 & 可访问 ---------- */
  .fade-up{opacity:0;transform:translateY(12px);animation:fadeUp 560ms var(--ease) forwards}
  .fade-up.d1{animation-delay:60ms}
  .fade-up.d2{animation-delay:120ms}
  .fade-up.d3{animation-delay:180ms}
  @keyframes fadeUp{to{opacity:1;transform:none}}
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
    .fade-up{opacity:1;transform:none}
  }