/* roulang page: index */
/* =========================================================
   设计变量
   ========================================================= */
:root{
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-alt:#EDEAE2;
  --ink:#101211;
  --ink-2:#3A3F3C;
  --muted:#6E736D;
  --line:#E2DFD6;
  --brand:#D9FF3F;
  --accent-2:#C75B39;
  --dark-section:#101211;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,18,17,.04);
  --shadow-2:0 12px 32px rgba(16,18,17,.10);
  --ease:cubic-bezier(.22,.68,.28,1);
  --fast:240ms;
  --slow:520ms;
  --max:1240px;
}

/* =========================================================
   基础 reset
   ========================================================= */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--fast) var(--ease);}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit;}
input,select,textarea{font:inherit;color:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p,figure{margin:0;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:2px;}
.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;}

/* =========================================================
   容器与板块
   ========================================================= */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px;}
.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--ink);display:block;}
.h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.2;letter-spacing:-.01em;}
.h3{font-size:18px;font-weight:700;line-height:1.4;}
.lead{font-size:16px;color:var(--ink-2);max-width:56ch;margin-top:14px;}
.muted{color:var(--muted);}
.tag{
  display:inline-block;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--surface-alt);border:1px solid var(--line);
  font-size:12px;font-weight:600;color:var(--ink-2);line-height:1.6;white-space:nowrap;
}

/* =========================================================
   按钮
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:56px;padding:0 30px;border-radius:var(--r-pill);
  border:1px solid transparent;font-size:16px;font-weight:700;letter-spacing:.01em;
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease),
             border-color var(--fast) var(--ease),transform var(--fast) var(--ease),
             box-shadow var(--fast) var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--brand);color:var(--ink);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--surface-alt);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0) scale(.99);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--ink);
}
.btn-text .arrow{display:inline-block;transition:transform var(--fast) var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}
.ghost-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:2px solid var(--brand);padding-bottom:2px;
}
.ghost-link .arrow{transition:transform var(--fast) var(--ease);}
.ghost-link:hover .arrow{transform:translateX(4px);}

/* =========================================================
   顶部导航
   ========================================================= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--fast) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(16,18,17,.08);}
.header-inner{display:flex;align-items:center;gap:28px;height:70px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:var(--r-md);
  background:var(--brand);color:var(--ink);
  display:grid;place-items:center;font-weight:900;font-size:17px;letter-spacing:-.03em;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:600;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--fast) var(--ease);
}
.main-nav a:hover{color:var(--ink);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--ink);font-weight:800;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search input{
  width:190px;height:40px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface-alt);font-size:14px;
  transition:width var(--fast) var(--ease),background var(--fast) var(--ease),
             border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.nav-search input::placeholder{color:var(--muted);font-size:13px;}
.nav-search input:focus{
  width:252px;background:var(--surface);border-color:var(--ink);
  outline:none;box-shadow:0 0 0 2px var(--brand);
}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-md);
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:var(--fast) var(--ease);}
.nav-toggle:hover{background:var(--surface-alt);}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,17,.5);z-index:105;
  opacity:0;visibility:hidden;transition:opacity var(--fast) var(--ease),visibility var(--fast);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:88%;max-width:360px;
  background:var(--surface);z-index:110;display:flex;flex-direction:column;
  padding:24px 24px 32px;transform:translateX(100%);
  transition:transform var(--fast) var(--ease);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border-radius:var(--r-md);font-size:20px;color:var(--muted);}
.drawer-close:hover{background:var(--surface-alt);color:var(--ink);}
.drawer-nav li{border-bottom:1px solid var(--line);}
.drawer-nav a{display:block;padding:16px 0;font-size:16px;font-weight:700;}
.drawer-nav a.is-active{color:var(--ink);box-shadow:inset 3px 0 0 var(--brand);padding-left:12px;}
.drawer-foot{margin-top:auto;padding-top:24px;}

/* =========================================================
   首屏 Hero
   ========================================================= */
.hero{padding:64px 0 88px;background:var(--bg);overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-copy{min-width:0;}
.hero-title{
  font-size:clamp(34px,5.2vw,62px);
  font-weight:900;line-height:1.06;letter-spacing:-.02em;
}
.hero-title .line{display:block;opacity:0;transform:translateY(12px);animation:lineUp .62s var(--ease) forwards;}
.hero-title .line:nth-child(2){animation-delay:.07s;}
.hero-title .line:nth-child(3){animation-delay:.14s;}
@keyframes lineUp{to{opacity:1;transform:translateY(0);}}
.hl{font-style:normal;background:var(--brand);color:var(--ink);padding:0 .1em;border-radius:2px;}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:32ch;}
.hero-points{
  display:flex;flex-wrap:wrap;margin-top:28px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  padding:14px 22px 14px 0;font-size:14px;font-weight:600;color:var(--ink-2);
}
.hero-points li+li{border-left:1px solid var(--line);padding-left:22px;}
.hero-points li::before{content:"";width:6px;height:6px;background:var(--ink);border-radius:1px;flex:0 0 6px;}
.hero-cta{display:flex;align-items:center;gap:16px;margin-top:34px;flex-wrap:wrap;}
.hero-visual{position:relative;min-width:0;}
.hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--shadow-1);
}
.hero-float{
  position:absolute;left:-26px;bottom:30px;
  display:flex;align-items:center;gap:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 22px;box-shadow:var(--shadow-2);
}
.hero-float-num{font-size:34px;font-weight:900;line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.03em;}
.hero-float-label{font-size:13px;line-height:1.5;color:var(--muted);}

/* =========================================================
   信任条
   ========================================================= */
.trust-bar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-list li{padding:24px 26px;border-left:1px solid var(--line);}
.trust-list li:first-child{border-left:none;padding-left:0;}
.trust-name{display:block;font-size:15px;font-weight:800;}
.trust-desc{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* =========================================================
   痛点区（深色反转）
   ========================================================= */
.pain{background:var(--dark-section);color:#fff;padding:96px 0;}
.pain-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.pain-title{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.25;color:#fff;}
.pain-lead{margin-top:18px;font-size:15px;line-height:1.85;color:#C9CCC7;max-width:30ch;}
.pain-list{border-top:1px solid rgba(255,255,255,.12);}
.pain-item{border-bottom:1px solid rgba(255,255,255,.12);}
.pain-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:18px;
  padding:22px 0;font-size:17px;font-weight:700;color:#fff;
  transition:color var(--fast) var(--ease);
}
.pain-item summary::-webkit-details-marker{display:none;}
.pain-item summary:hover{color:var(--brand);}
.pain-num{color:var(--accent-2);font-size:13px;font-weight:900;letter-spacing:.06em;padding-top:4px;flex:0 0 auto;font-variant-numeric:tabular-nums;}
.pain-plus{
  position:relative;width:14px;height:14px;margin-left:auto;flex:0 0 14px;margin-top:7px;
  transition:transform var(--fast) var(--ease);
}
.pain-plus::before,.pain-plus::after{content:"";position:absolute;background:#fff;border-radius:2px;}
.pain-plus::before{left:0;top:6px;width:14px;height:2px;}
.pain-plus::after{left:6px;top:0;width:2px;height:14px;}
.pain-item[open] .pain-plus{transform:rotate(45deg);}
.pain-body{padding:0 40px 24px 34px;font-size:15px;line-height:1.85;color:#C9CCC7;max-width:62ch;}

/* =========================================================
   方案区（1 大 3 小）
   ========================================================= */
.plans-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:24px;align-items:start;}
.plan-feature{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.plan-feature:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.plan-feature-media{overflow:hidden;background:var(--surface-alt);}
.plan-feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 1.2s var(--ease);}
.plan-feature:hover .plan-feature-media img{transform:scale(1.03);}
.plan-feature-body{padding:28px 30px 32px;}
.plan-feature-body h3{font-size:22px;font-weight:800;line-height:1.35;margin-top:14px;}
.plan-feature-body p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.plan-feature-body .btn-text{margin-top:22px;}
.plan-mini-list{display:grid;gap:16px;}
.plan-mini{
  display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;
  padding:22px 24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.plan-mini:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.plan-mini-num{font-size:12px;font-weight:900;letter-spacing:.08em;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:3px;}
.plan-mini h3{font-size:18px;font-weight:700;line-height:1.4;}
.plan-mini p{font-size:14px;line-height:1.7;color:var(--muted);margin-top:6px;}
.plan-mini .arrow{font-size:18px;color:var(--ink);transition:transform var(--fast) var(--ease);}
.plan-mini:hover .arrow{transform:translateX(4px);}

/* =========================================================
   数据区
   ========================================================= */
.stats-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:52px 44px 40px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:4px 34px;border-left:1px solid var(--line);min-width:0;}
.stat:first-child{border-left:none;padding-left:0;}
.stat:last-child{padding-right:0;}
.stat-num{
  font-size:clamp(38px,5vw,64px);font-weight:900;line-height:1;
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;
}
.stat-bar{width:46px;height:6px;background:var(--brand);border-radius:2px;margin-top:14px;}
.stat-label{margin-top:16px;font-size:14px;font-weight:800;}
.stat-note{margin-top:4px;font-size:13px;color:var(--muted);}
.stats-foot{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;line-height:1.8;color:var(--muted);
}

/* =========================================================
   流程
   ========================================================= */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.step{position:relative;padding:36px 30px 0 0;}
.step::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--line);}
.step::after{
  content:"";position:absolute;top:-5px;left:0;width:11px;height:11px;
  border-radius:50%;background:var(--brand);border:2px solid var(--ink);
}
.step-num{font-size:12px;font-weight:900;letter-spacing:.1em;color:var(--muted);font-variant-numeric:tabular-nums;}
.step h3{font-size:18px;font-weight:700;margin-top:10px;}
.step p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted);}

/* =========================================================
   最新动态（CMS）
   ========================================================= */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.news-card-link{display:flex;flex-direction:column;width:100%;}
.news-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.news-thumb{aspect-ratio:16/9;background:var(--surface-alt);overflow:hidden;display:grid;place-items:center;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-thumb-fallback{font-size:30px;font-weight:900;color:var(--muted);letter-spacing:-.02em;}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-body h3{
  font-size:18px;font-weight:700;line-height:1.45;margin-top:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;line-height:1.75;color:var(--muted);margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-md);
  background:var(--surface);
  padding:64px 24px;text-align:center;
}
.news-empty-icon{
  width:48px;height:48px;margin:0 auto 18px;border-radius:var(--r-md);
  background:var(--surface-alt);display:grid;place-items:center;
  font-size:20px;font-weight:900;color:var(--muted);
}
.news-empty p{font-size:15px;color:var(--muted);}
.news-empty .btn{margin-top:24px;}

/* =========================================================
   FAQ
   ========================================================= */
.faq-list{border-top:1px solid var(--line);max-width:920px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:20px;
  padding:24px 0;font-size:17px;font-weight:700;
  transition:color var(--fast) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink-2);}
.faq-plus{
  position:relative;width:14px;height:14px;margin-left:auto;flex:0 0 14px;
  transition:transform var(--fast) var(--ease);
}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:var(--ink);border-radius:2px;}
.faq-plus::before{left:0;top:6px;width:14px;height:2px;}
.faq-plus::after{left:6px;top:0;width:2px;height:14px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-answer{padding:0 40px 26px 0;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:70ch;}

/* =========================================================
   CTA + 表单
   ========================================================= */
.cta-section{background:var(--dark-section);color:#fff;padding:90px 0 100px;}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.cta-title{font-size:clamp(26px,3vw,40px);font-weight:800;line-height:1.2;color:#fff;letter-spacing:-.01em;}
.cta-lead{margin-top:20px;font-size:15px;line-height:1.9;color:#C9CCC7;max-width:32ch;}
.cta-points{margin-top:28px;display:grid;gap:12px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#C9CCC7;line-height:1.75;}
.cta-points li::before{
  content:"";width:6px;height:6px;margin-top:9px;flex:0 0 6px;
  background:var(--brand);border-radius:1px;
}
.form-panel{background:var(--surface);border-radius:var(--r-lg);padding:36px 36px 32px;color:var(--ink);}
.form-panel-title{font-size:20px;font-weight:800;}
.form-panel-sub{margin-top:8px;font-size:13px;color:var(--muted);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.req{color:var(--accent-2);margin-left:2px;}
.field input[type=text],
.field input[type=tel],
.field input[type=email],
.field select,
.field textarea{
  width:100%;padding:12px 14px;font-size:15px;line-height:1.6;
  background:var(--surface);border:1px solid var(--line);border-radius:6px;
  transition:border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.field textarea{min-height:100px;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 15px) 22px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:40px;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);outline:none;box-shadow:0 0 0 2px var(--brand);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field-error{display:none;margin-top:6px;font-size:12px;color:var(--accent-2);}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--ink-2);margin-bottom:22px;}
.checkbox input{width:16px;height:16px;margin:3px 0 0;flex:0 0 16px;accent-color:var(--ink);border-radius:0;}
.checkbox a{border-bottom:1px solid var(--line);}
.checkbox a:hover{border-color:var(--ink);}
.form-submit{width:100%;}
.form-success{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:52px 36px;text-align:center;
}
.form-success strong{display:block;font-size:20px;font-weight:800;color:var(--ink);}
.form-success p{margin-top:12px;font-size:14px;line-height:1.8;color:var(--muted);}
.privacy-note{margin-top:18px;font-size:13px;line-height:1.8;color:#C9CCC7;max-width:46ch;}

/* =========================================================
   弹层
   ========================================================= */
.dialog-backdrop{
  position:fixed;inset:0;z-index:120;padding:24px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(16,18,17,.6);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity var(--fast) var(--ease),visibility var(--fast) var(--ease);
}
.dialog-backdrop.is-open{opacity:1;visibility:visible;}
.dialog{
  position:relative;width:100%;max-width:540px;max-height:90vh;overflow-y:auto;
  background:var(--surface);border-radius:12px;padding:34px 34px 30px;
  transform:translateY(8px);
  transition:transform 200ms var(--ease);
}
.dialog-backdrop.is-open .dialog{transform:translateY(0);}
.dialog-close{
  position:absolute;right:8px;top:8px;width:40px;height:40px;
  display:grid;place-items:center;border-radius:50%;
  font-size:20px;line-height:1;color:var(--muted);
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease);
}
.dialog-close:hover{background:var(--surface-alt);color:var(--ink);}
.dialog h2{font-size:22px;font-weight:800;line-height:1.35;}
.dialog > p{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.75;}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{background:var(--dark-section);color:#C9CCC7;padding:68px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;}
.footer-col{padding:0 30px;border-left:1px solid rgba(255,255,255,.12);min-width:0;}
.footer-col:first-child{border-left:none;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col h4{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:18px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand span{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em;}
.footer-desc{font-size:13px;line-height:1.85;max-width:24ch;}
.footer-col li a{font-size:14px;line-height:2.1;color:#C9CCC7;}
.footer-col li a:hover{color:#fff;}
.footer-contact li{font-size:13px;line-height:1.9;margin-bottom:12px;}
.footer-contact strong{display:block;color:#fff;font-size:13px;font-weight:700;margin-bottom:2px;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8C918B;
}
.footer-bottom a{color:#C9CCC7;}
.footer-bottom a:hover{color:#fff;}

/* =========================================================
   动效与响应式
   ========================================================= */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  .hero-title .line{opacity:1;transform:none;}
}

@media(max-width:1180px){
  .hero-grid{gap:40px;}
  .hero-float{left:-14px;}
}

@media(max-width:991px){
  .container{padding:0 24px;}
  .section{padding:80px 0;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .nav-search{display:none;}
  .hero{padding:44px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-float{position:static;margin-top:-28px;margin-left:20px;width:calc(100% - 40px);}
  .pain-grid{grid-template-columns:1fr;gap:36px;}
  .pain-body{padding-left:32px;padding-right:8px;}
  .plans-grid{grid-template-columns:1fr;gap:20px;}
  .stats-wrap{padding:36px 28px 32px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat{padding:4px 24px;}
  .stat:nth-child(odd){border-left:none;padding-left:0;}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:0 0;}
  .step{padding:32px 24px 0 0;}
  .step:nth-child(odd){padding-left:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .cta-lead,.privacy-note{max-width:56ch;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){border-left:none;padding-left:0;}
  .footer-col:nth-child(even){padding-right:0;}
}

@media(max-width:767px){
  .trust-list{grid-template-columns:1fr 1fr;}
  .trust-list li{padding:18px 20px;}
  .trust-list li:nth-child(odd){border-left:none;padding-left:0;}
  .trust-list li:nth-child(n+3){border-top:1px solid var(--line);}
  .steps-grid{grid-template-columns:1fr;}
  .step{padding:20px 0;border-top:1px solid var(--line);}
  .step::before,.step::after{display:none;}
  .step:first-child{border-top:none;padding-top:0;}
  .news-grid{grid-template-columns:1fr;}
  .hero-points li{padding-right:16px;}
  .hero-points li+li{padding-left:16px;}
  .hero-cta .btn{width:100%;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-text{justify-content:center;height:auto;padding:8px 0;}
  .pain{padding:72px 0;}
  .pain-body{padding-left:32px;}
  .form-panel{padding:26px 22px 24px;}
  .dialog{padding:28px 22px 24px;}
  .field-row{grid-template-columns:1fr;gap:0;}
  .section-head{margin-bottom:32px;}
}

@media(max-width:560px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .header-inner{height:64px;gap:14px;}
  .brand-text{font-size:15px;}
  .header-actions .btn-sm{padding:0 16px;font-size:13px;}
  .stats-grid{grid-template-columns:1fr;gap:26px;}
  .stat{border-left:none;padding:0;}
  .stats-wrap{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-col{padding:0;border-left:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-bottom span:last-child{text-align:left;}
}

/* roulang page: category1 */
:root{
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-alt:#EDEAE2;
  --ink:#101211;
  --ink-2:#3A3F3C;
  --muted:#6E736D;
  --line:#E2DFD6;
  --brand:#D9FF3F;
  --accent-2:#C75B39;
  --dark:#101211;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,18,17,.04);
  --shadow-2:0 12px 32px rgba(16,18,17,.10);
  --ease:cubic-bezier(.22,.68,.28,1);
  --fast:240ms;
  --slow:520ms;
  --container:1240px;
  --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;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--fast) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(16,18,17,.08);}
.header-inner{display:flex;align-items:center;height:70px;gap:22px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:var(--ink);
  display:grid;place-items:center;font-weight:900;font-size:17px;letter-spacing:-.03em;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}

.main-nav{margin-left:6px;}
.main-nav ul{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  border-radius:var(--r-sm);
  transition:color var(--fast) var(--ease),background var(--fast) var(--ease);
}
.main-nav a:hover{color:var(--ink);background:var(--surface-alt);}
.main-nav a.is-active{color:var(--ink);font-weight:800;}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;}
.nav-search input{
  width:190px;height:40px;
  border:1px solid var(--line);
  background:var(--surface-alt);
  border-radius:var(--r-pill);
  padding:0 16px;
  font-size:14px;
  transition:width var(--fast) var(--ease),border-color var(--fast) var(--ease),background var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search input:focus{
  outline:none;width:260px;background:var(--surface);
  border-color:var(--ink);box-shadow:0 0 0 2px var(--brand);
}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--surface);border-radius:var(--r-sm);cursor:pointer;
  align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--fast) var(--ease),color var(--fast) var(--ease),
             border-color var(--fast) var(--ease),transform var(--fast) var(--ease),
             box-shadow var(--fast) var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--brand);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-brand{background:var(--brand);color:var(--ink);border-color:var(--brand);}
.btn-brand:hover{background:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-secondary{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-secondary:hover{background:var(--surface-alt);transform:translateY(-2px);}
.btn-ghost{background:transparent;border-color:transparent;color:var(--ink);padding:0 6px;height:auto;}
.btn-ghost .arrow{transition:transform var(--fast) var(--ease);display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* mobile drawer */
.mobile-backdrop{
  position:fixed;inset:0;background:rgba(16,18,17,.5);
  opacity:0;visibility:hidden;transition:opacity var(--fast) var(--ease);z-index:80;
}
.mobile-backdrop.is-open{opacity:1;visibility:visible;}
.mobile-panel{
  position:fixed;top:0;right:0;width:88%;max-width:360px;height:100%;
  background:var(--surface);z-index:90;
  transform:translateX(101%);transition:transform var(--slow) var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 32px;
  box-shadow:-18px 0 48px rgba(16,18,17,.18);
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.panel-close{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);font-size:20px;line-height:1;cursor:pointer;
}
.mobile-nav{display:grid;gap:2px;padding:18px 0;flex:1;}
.mobile-nav a{
  padding:13px 8px;border-radius:var(--r-sm);font-size:16px;font-weight:600;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.mobile-nav a.is-active{color:var(--ink);font-weight:800;box-shadow:inset 3px 0 0 var(--brand);padding-left:14px;}

/* ============ hero ============ */
.cat-hero{position:relative;overflow:hidden;background:var(--dark);}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.85;
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(16,18,17,.94) 0%,rgba(16,18,17,.80) 46%,rgba(16,18,17,.58) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:74px 0 66px;max-width:900px;}
.cat-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--brand);margin-bottom:20px;
}
.cat-eyebrow::before{content:"";width:26px;height:2px;background:var(--brand);display:block;}
.cat-hero h1{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:900;line-height:1.14;letter-spacing:-.02em;color:#fff;
}
.cat-hero h1 em{
  font-style:normal;background:var(--brand);color:var(--ink);
  padding:0 10px;border-radius:var(--r-sm);display:inline-block;
}
.cat-hero .hero-lead{
  margin-top:20px;max-width:640px;
  font-size:17px;line-height:1.85;color:#C9CCC7;
}

/* breadcrumb bar */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb-bar .inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding:16px 0;
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.crumbs a:hover{color:var(--ink);}
.crumbs .sep{color:var(--line);}
.crumb-note{font-size:13px;color:var(--muted);}

/* facts strip */
.facts{background:var(--surface);border-bottom:1px solid var(--line);}
.facts-list{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.facts-list li{
  padding:26px 24px;border-right:1px solid var(--line);
}
.facts-list li:last-child{border-right:0;}
.facts-list li:first-child{padding-left:0;}
.facts-list strong{display:block;font-size:15px;font-weight:800;color:var(--ink);}
.facts-list span{display:block;margin-top:4px;font-size:13px;color:var(--muted);line-height:1.6;}

/* ============ blocks ============ */
.block{padding:96px 0;}
.block--alt{background:var(--surface-alt);}
.block--tight{padding-top:0;}

.sec-head{max-width:720px;margin-bottom:56px;}
.sec-head h2{
  font-size:clamp(24px,2.6vw,36px);
  font-weight:700;line-height:1.2;letter-spacing:-.02em;
}
.sec-head p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-2);}

.split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:64px;align-items:center;
}
.split + .split{margin-top:96px;}
.split--reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-md);overflow:hidden;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform 1.2s var(--ease);
}
.split-media:hover img{transform:scale(1.03);}
.split-body .idx{
  display:inline-block;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--accent-2);margin-bottom:12px;
}
.split-body h2{
  font-size:clamp(23px,2.3vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.02em;
}
.split-body h2::after{
  content:"";display:block;width:56px;height:4px;background:var(--brand);
  border-radius:2px;margin-top:16px;
}
.split-body p{margin-top:20px;font-size:16px;line-height:1.9;color:var(--ink-2);max-width:56ch;}

.tick-list{margin-top:24px;display:grid;gap:11px;}
.tick-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--ink-2);}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;
  border-radius:2px;background:var(--brand);
}

/* faq */
.faq-wrap{max-width:860px;}
.faq-list{border-top:1px solid var(--line);margin-top:12px;}
.faq-list details{border-bottom:1px solid var(--line);}
.faq-list summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:700;color:var(--ink);
  transition:color var(--fast) var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary:hover{color:var(--accent-2);}
.faq-list summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;line-height:1;
  color:var(--ink);transition:transform var(--fast) var(--ease);
}
.faq-list details[open] summary::after{transform:rotate(45deg);}
.faq-list .faq-a{padding:0 40px 24px 0;}
.faq-list .faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);}

/* cross links */
.xlink-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line);
}
.xlink{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:26px 28px;background:var(--surface);
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:16px;font-weight:700;
  transition:background var(--fast) var(--ease),transform var(--fast) var(--ease);
}
.xlink span.arrow{font-weight:400;transition:transform var(--fast) var(--ease);}
.xlink:hover{background:var(--brand);}
.xlink:hover span.arrow{transform:translateX(6px);}
.xlink small{display:block;font-size:13px;font-weight:500;color:var(--muted);margin-top:4px;}
.xlink:hover small{color:var(--ink);}

/* cta + form */
.cta-band{background:var(--dark);color:#fff;padding:92px 0;}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start;}
.cta-band h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.22;letter-spacing:-.02em;}
.cta-band .cta-sub{margin-top:16px;font-size:16px;line-height:1.85;color:#C9CCC7;max-width:44ch;}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{
  position:relative;padding-left:22px;font-size:14px;color:#C9CCC7;line-height:1.7;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}

.lead-form{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-lg);
  padding:30px 28px;
}
.lead-form .field{margin-bottom:18px;}
.lead-form label{
  display:block;font-size:13px;font-weight:600;color:#C9CCC7;margin-bottom:8px;
}
.lead-form .req{color:var(--accent-2);}
.lead-form input,.lead-form select{
  width:100%;height:46px;padding:0 14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:6px;font-size:15px;color:#fff;
  transition:border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease),background var(--fast) var(--ease);
}
.lead-form input::placeholder{color:#8B908A;}
.lead-form select option{color:#101211;}
.lead-form input:focus,.lead-form select:focus{
  outline:none;border-color:var(--brand);background:rgba(255,255,255,.10);
  box-shadow:0 0 0 2px rgba(217,255,63,.35);
}
.lead-form .btn{margin-top:6px;}
.form-note{margin-top:14px;font-size:12px;line-height:1.7;color:#8B908A;}
.form-success{
  padding:34px 24px;border:1px solid rgba(217,255,63,.5);border-radius:var(--r-md);
  background:rgba(217,255,63,.08);
}
.form-success strong{display:block;font-size:18px;font-weight:800;color:#fff;}
.form-success p{margin-top:10px;font-size:14px;color:#C9CCC7;line-height:1.8;}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#C9CCC7;padding:72px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:0;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:44px;
}
.footer-col{padding:0 28px;border-right:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{padding-left:0;}
.footer-col:last-child{border-right:0;padding-right:0;}
.footer-col h4{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:18px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:7px;font-size:16px;}
.footer-brand span:last-child{font-size:16px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:#C9CCC7;max-width:26ch;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:#C9CCC7;transition:color var(--fast) var(--ease);}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact li{font-size:13px;line-height:1.75;color:#9AA09A;}
.footer-contact strong{display:block;font-size:14px;font-weight:700;color:#fff;margin-bottom:2px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding-top:26px;font-size:13px;color:#8B908A;
}
.footer-bottom a{color:#C9CCC7;}
.footer-bottom a:hover{color:var(--brand);}

/* ============ responsive ============ */
@media (max-width:1100px){
  .nav-search input{width:150px;}
  .nav-search input:focus{width:200px;}
}
@media (max-width:991px){
  .container{padding:0 24px;}
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .block{padding:72px 0;}
  .split{grid-template-columns:minmax(0,1fr);gap:32px;}
  .split--reverse .split-media{order:0;}
  .split + .split{margin-top:72px;}
  .facts-list{grid-template-columns:repeat(2,1fr);}
  .facts-list li{padding:20px 20px;border-bottom:1px solid var(--line);}
  .facts-list li:nth-child(2n){border-right:0;}
  .facts-list li:first-child{padding-left:20px;}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px 0;}
  .footer-col{padding:0 22px;}
  .footer-col:nth-child(2n){border-right:0;padding-right:0;}
  .footer-col:nth-child(2n+1){padding-left:0;}
  .cat-hero-inner{padding:56px 0 50px;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .header-inner{height:64px;gap:12px;}
  .brand-text{font-size:15px;}
  .btn{height:46px;padding:0 20px;font-size:14px;}
  .block{padding:56px 0;}
  .sec-head{margin-bottom:36px;}
  .cat-hero-inner{padding:46px 0 42px;}
  .cat-hero .hero-lead{font-size:15px;}
  .facts-list{grid-template-columns:1fr;}
  .facts-list li{border-right:0;padding:18px 0;}
  .xlink-grid{grid-template-columns:1fr;}
  .faq-list summary{font-size:16px;padding:18px 0;}
  .faq-list .faq-a{padding-right:0;}
  .lead-form{padding:24px 20px;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{padding:0;border-right:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .crumb-bar .inner{flex-direction:column;align-items:flex-start;gap:6px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-alt:#EDEAE2;
  --ink:#101211;
  --ink-2:#3A3F3C;
  --muted:#6E736D;
  --line:#E2DFD6;
  --brand:#D9FF3F;
  --accent-2:#C75B39;
  --dark-section:#101211;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,18,17,.04);
  --sh-2:0 12px 32px rgba(16,18,17,.10);
  --ease:cubic-bezier(.22,.68,.28,1);
  --fast:240ms;
  --slow:520ms;
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,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(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.modal-open,body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:inherit;text-decoration:none;background:transparent;}
button,.button{
  font:inherit;
  background:none;
  border:0;
  color:inherit;
  padding:0;
  margin:0;
  cursor:pointer;
}
input,select,textarea{
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  margin:0;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:2px;}
::selection{background:var(--brand);color:var(--ink);}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  background:var(--ink);
  color:#fff;
  padding:12px 18px;
  border-radius:0 0 var(--r-md) 0;
  z-index:200;
}
.skip-link:focus{left:0;}

/* ---------- 按钮系统 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:52px;
  padding:0 28px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:700;
  line-height:1;
  letter-spacing:.01em;
  transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease),border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px;}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--brand);color:var(--ink);transform:translateY(-2px);}
.btn-outline{background:var(--surface);border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--surface-alt);transform:translateY(-2px);}
.btn-brand{background:var(--brand);color:var(--ink);border-color:var(--brand);}
.btn-brand:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px);}
.btn-ghost{background:transparent;border:0;height:auto;padding:0;color:var(--ink);font-weight:700;}
.btn-ghost i{transition:transform var(--fast) var(--ease);}
.btn-ghost:hover i{transform:translateX(4px);}
.btn:active{transform:translateY(0) scale(.99);}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--surface-alt);
  border:1px solid transparent;
  font-size:12px;
  font-weight:700;
  line-height:1.5;
  color:var(--ink-2);
  letter-spacing:.02em;
  max-width:100%;
}
.tag-outline{background:transparent;border-color:var(--line);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--fast) var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,18,17,.09);}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:70px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;
  border-radius:9px;
  background:var(--brand);
  color:var(--ink);
  display:grid;place-items:center;
  font-weight:900;font-size:17px;
  letter-spacing:-.03em;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{flex:1 1 auto;min-width:0;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  transition:color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.main-nav a:hover{color:var(--ink);background:var(--surface-alt);}
.main-nav a.is-active{color:var(--ink);font-weight:800;}
.main-nav a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
}
.drawer-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:190px;height:40px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:var(--surface-alt);
  border:1px solid transparent;
  transition:width var(--fast) var(--ease),border-color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.nav-search i{color:var(--muted);font-size:13px;}
.nav-search input{
  width:100%;height:38px;
  border:0;background:transparent;
  outline:none;
  font-size:14px;
  padding:0;
  box-shadow:none;
}
.nav-search input::placeholder{color:var(--muted);}
.nav-search:focus-within{width:260px;background:#fff;border-color:var(--ink);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  place-items:center;
  padding:0;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--ink);position:relative;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform var(--fast) var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}
.nav-scrim{
  position:fixed;inset:0;
  background:rgba(16,18,17,.5);
  opacity:0;visibility:hidden;
  transition:opacity var(--fast) var(--ease),visibility var(--fast);
  z-index:70;
}
body.nav-open .nav-scrim{opacity:1;visibility:visible;}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:24px 0 0;font-size:13px;color:var(--muted);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;min-width:0;}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;max-width:100%;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--muted);transition:color var(--fast) var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.crumb-current{
  color:var(--ink-2);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:380px;
}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:56px;
  padding:26px 0 96px;
  align-items:start;
}
.article-main{min-width:0;max-width:760px;}
.article-head{padding-bottom:6px;}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--ink);
  max-width:760px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
  margin-top:22px;
  padding:13px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  font-size:13px;
  font-weight:500;
  color:var(--muted);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .meta-item i{font-size:12px;color:var(--muted);}
.article-meta .meta-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 正文排版 ---------- */
.article-body{
  margin-top:34px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
  word-wrap:break-word;
}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;
  margin:48px 0 18px;
  padding-left:16px;
  font-size:23px;
  font-weight:800;
  line-height:1.4;
  color:var(--ink);
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.3em;bottom:.3em;
  width:3px;
  border-radius:2px;
  background:var(--brand);
}
.article-body h3{
  margin:34px 0 12px;
  font-size:18px;
  font-weight:700;
  line-height:1.5;
  color:var(--ink);
  scroll-margin-top:96px;
}
.article-body h4{
  margin:26px 0 10px;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
}
.article-body a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--brand);
  text-decoration-thickness:2px;
  text-underline-offset:3px;
  transition:background-color var(--fast) var(--ease);
}
.article-body a:hover{background:var(--brand);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.5em;}
.article-body ul{list-style:none;padding-left:1.3em;}
.article-body ul>li{position:relative;margin-bottom:.5em;}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:-1.3em;top:.75em;
  width:7px;height:7px;
  background:var(--brand);
  border-radius:2px;
}
.article-body ol{list-style:decimal;}
.article-body ol>li{margin-bottom:.5em;padding-left:.2em;}
.article-body blockquote{
  margin:30px 0;
  padding:18px 24px;
  border-left:3px solid var(--ink);
  background:var(--surface-alt);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink);
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  margin:26px auto;
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.article-body figure{margin:28px 0;}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--muted);
}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  white-space:nowrap;
}
.article-body th{background:var(--surface-alt);font-weight:700;color:var(--ink);}
.article-body pre{
  margin:26px 0;
  padding:16px 18px;
  background:var(--surface-alt);
  border-radius:var(--r-md);
  overflow-x:auto;
  font-family:var(--font-num);
  font-size:14px;
  line-height:1.7;
  color:var(--ink);
}
.article-body code{
  font-family:var(--font-num);
  background:var(--surface-alt);
  padding:2px 6px;
  border-radius:var(--r-sm);
  font-size:.92em;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 空态 ---------- */
.empty-state{
  margin-top:34px;
  padding:44px 32px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  text-align:center;
}
.empty-state i{font-size:26px;color:var(--muted);}
.empty-state h2{margin:16px 0 10px;font-size:20px;font-weight:800;color:var(--ink);}
.empty-state p{margin:0 0 22px;color:var(--muted);font-size:15px;line-height:1.8;}

/* ---------- 文末区 ---------- */
.article-foot{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--muted);font-weight:700;letter-spacing:.06em;}
.post-nav{margin-top:28px;}
.post-nav-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  height:100%;
  padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.post-nav-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.post-nav-card .pn-label{
  font-size:12px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--muted);
  text-transform:uppercase;
}
.post-nav-card .pn-title{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5;}
.post-nav-card .pn-desc{font-size:14px;color:var(--muted);line-height:1.7;}
.post-nav .cell{margin-bottom:16px;}
.back-cat{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:24px;
  font-size:14.5px;
  font-weight:700;
  color:var(--ink);
}
.back-cat i{transition:transform var(--fast) var(--ease);}
.back-cat:hover i{transform:translateX(-4px);}

/* ---------- 相关推荐 ---------- */
.related-section{padding:80px 0 96px;}
.related-section h2{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:800;
  line-height:1.3;
  margin-bottom:10px;
}
.related-section .section-sub{font-size:15px;color:var(--muted);margin-bottom:36px;}
.related-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
}
.related-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh-2);}
.related-thumb{display:block;overflow:hidden;aspect-ratio:16/9;background:var(--surface-alt);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease);}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;}
.related-body h3{font-size:17px;font-weight:700;line-height:1.45;color:var(--ink);}
.related-body h3 a:hover{background:var(--brand);}
.related-body p{font-size:14px;line-height:1.75;color:var(--muted);}
.related-grid .cell{margin-bottom:24px;}

/* ---------- 侧栏 ---------- */
.article-side{display:none;}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
}
.side-card+.side-card{margin-top:22px;}
.side-card h2{
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--ink);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:300px;overflow-y:auto;}
.toc-list a{
  display:block;
  padding:8px 10px;
  font-size:14px;
  line-height:1.55;
  color:var(--ink-2);
  border-left:2px solid var(--line);
  transition:color var(--fast) var(--ease),border-color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.toc-list a:hover{color:var(--ink);background:var(--surface-alt);}
.toc-list a.is-current{color:var(--ink);font-weight:700;border-left-color:var(--ink);background:var(--surface-alt);}
.side-list{display:flex;flex-direction:column;}
.side-list li{border-bottom:1px solid var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;
  gap:12px;
  padding:12px 0;
  font-size:14.5px;
  line-height:1.55;
  color:var(--ink-2);
  transition:color var(--fast) var(--ease);
}
.side-list a:hover{color:var(--ink);}
.side-list .idx{
  font-family:var(--font-num);
  font-size:12px;
  font-weight:700;
  color:var(--muted);
  padding-top:3px;
}
.side-cta{background:var(--surface-alt);border-color:transparent;}
.side-cta p{font-size:14px;line-height:1.75;color:var(--ink-2);margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--dark-section);
  color:#fff;
  padding:88px 0;
}
.cta-band h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:800;
  line-height:1.28;
  color:#fff;
  margin-bottom:14px;
}
.cta-band .cta-lead{
  font-size:16px;
  line-height:1.85;
  color:#C9CCC7;
  max-width:520px;
  margin-bottom:26px;
}
.cta-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  align-items:start;
}
.cta-note{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:22px;
  font-size:13px;
  line-height:1.75;
  color:#C9CCC7;
}
.cta-note i{margin-top:4px;font-size:12px;}
.cta-form{
  background:#fff;
  border-radius:var(--r-lg);
  padding:28px;
  border:1px solid rgba(255,255,255,.14);
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  margin-bottom:7px;
  font-size:13px;
  font-weight:600;
  color:var(--ink-2);
}
.field .req{color:var(--accent-2);margin-left:3px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;
  height:48px;
  padding:0 14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  outline:none;
  transition:border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease);
  box-shadow:none;
  margin:0;
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{
  appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 2px var(--brand);
}
.field .field-error{
  display:none;
  margin-top:6px;
  font-size:12.5px;
  color:var(--accent-2);
}
.field.has-error input,.field.has-error select{border-color:var(--accent-2);}
.field.has-error .field-error{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:18px 0 20px;}
.check-row input[type="checkbox"]{
  appearance:none;
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:4px;
  border:1px solid var(--ink-2);
  border-radius:2px;
  background:#fff;
  display:grid;place-items:center;
  cursor:pointer;
  transition:background-color var(--fast) var(--ease),border-color var(--fast) var(--ease);
}
.check-row input[type="checkbox"]::after{
  content:"";
  width:8px;height:4px;
  border-left:2px solid #fff;
  border-bottom:2px solid #fff;
  transform:rotate(-45deg) scale(0);
  transition:transform var(--fast) var(--ease);
  margin-top:-2px;
}
.check-row input[type="checkbox"]:checked{background:var(--ink);border-color:var(--ink);}
.check-row input[type="checkbox"]:checked::after{transform:rotate(-45deg) scale(1);}
.check-row span{font-size:12.5px;line-height:1.75;color:var(--ink-2);}
.form-success{
  display:none;
  padding:34px 24px;
  text-align:center;
  background:var(--surface-alt);
  border-radius:var(--r-md);
}
.form-success i{font-size:26px;color:var(--ink);}
.form-success h3{font-size:19px;font-weight:800;color:var(--ink);margin:14px 0 8px;}
.form-success p{font-size:14px;color:var(--muted);line-height:1.8;}
.is-success .cta-fields{display:none;}
.is-success .form-success{display:block;}
.cta-band .field label{color:var(--ink-2);}
.cta-band .privacy-line{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7;}

/* ---------- 弹层 ---------- */
.modal-overlay{
  position:fixed;inset:0;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
  background:rgba(16,18,17,.6);
  backdrop-filter:blur(2px);
  z-index:120;
}
body.modal-open .modal-overlay{display:flex;}
.modal-panel{
  position:relative;
  width:100%;
  max-width:520px;
  max-height:88vh;
  overflow-y:auto;
  background:#fff;
  border-radius:12px;
  padding:32px;
  box-shadow:0 24px 60px rgba(16,18,17,.28);
  transform:translateY(8px);
  opacity:0;
  transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
body.modal-open .modal-panel{transform:translateY(0);opacity:1;}
.modal-panel h3{font-size:22px;font-weight:800;color:var(--ink);line-height:1.35;margin-bottom:8px;}
.modal-panel .modal-lead{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:22px;}
.modal-close{
  position:absolute;
  top:12px;right:12px;
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:var(--r-md);
  color:var(--muted);
  font-size:16px;
  transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease);
}
.modal-close:hover{background:var(--surface-alt);color:var(--ink);}
.modal-panel .btn{width:100%;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:#C9CCC7;
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:0;
}
.footer-col{padding:0 28px;}
.footer-col:first-child{padding-left:0;}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.12);}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand);color:var(--ink);}
.footer-brand span:last-child{font-size:17px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:#C9CCC7;max-width:280px;}
.footer-col h4{
  font-size:13px;
  font-weight:800;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:#C9CCC7;transition:color var(--fast) var(--ease);}
.footer-col ul a:hover{color:var(--brand);}
.footer-contact li{font-size:13.5px;line-height:1.75;color:#C9CCC7;}
.footer-contact strong{display:block;color:#fff;font-size:13px;font-weight:700;margin-bottom:2px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  margin-top:56px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:#8F948E;
}
.footer-bottom a{color:#C9CCC7;}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--slow) var(--ease),transform var(--slow) var(--ease);}
.reveal.is-in{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;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{
    grid-template-columns:minmax(0,760px) 320px;
    justify-content:space-between;
  }
  .article-side{display:block;position:sticky;top:92px;}
}
@media (min-width:992px){
  .cta-grid{grid-template-columns:1.05fr .95fr;gap:64px;}
}
@media (max-width:1199px){
  .article-side .side-card{margin-top:26px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-col{padding:0 0 28px;}
  .footer-col+.footer-col{border-left:0;}
  .footer-col:nth-child(even){padding-left:0;}
}
@media (max-width:991px){
  .nav-search{display:none;}
  .nav-toggle{display:grid;}
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:88%;
    max-width:400px;
    height:100%;
    background:#fff;
    padding:96px 24px 120px;
    transform:translateX(105%);
    transition:transform var(--slow) var(--ease);
    overflow-y:auto;
    box-shadow:-18px 0 44px rgba(16,18,17,.16);
    z-index:75;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
  .main-nav a{padding:14px 12px;font-size:17px;border-radius:var(--r-md);}
  .main-nav a.is-active{background:var(--surface-alt);}
  .main-nav a.is-active::after{left:12px;right:auto;width:24px;bottom:9px;}
  .drawer-cta{display:block;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
  .drawer-cta .btn{width:100%;}
  .drawer-cta p{font-size:13px;color:var(--muted);margin-bottom:14px;line-height:1.7;}
  .header-actions .btn{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .article-layout{padding:20px 0 64px;gap:40px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17px;}
  .crumb-current{max-width:200px;}
  .related-section{padding:56px 0 64px;}
  .cta-band{padding:64px 0;}
  .cta-form{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col{padding:0 0 26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .modal-panel{padding:26px 22px;max-height:82vh;}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px;}
  .header-inner{gap:12px;height:64px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .post-nav-card{padding:18px;}
  .article-meta{font-size:12.5px;gap:6px 14px;}
  .modal-overlay{padding:0;align-items:flex-end;}
  .modal-panel{max-width:100%;border-radius:14px 14px 0 0;padding-bottom:calc(26px + env(safe-area-inset-bottom));}
}

/* roulang page: category2 */
:root{
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --surface-alt:#EDEAE2;
  --ink:#101211;
  --ink-2:#3A3F3C;
  --muted:#6E736D;
  --line:#E2DFD6;
  --brand:#D9FF3F;
  --accent-2:#C75B39;
  --dark-section:#101211;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(16,18,17,.04);
  --shadow-2:0 12px 32px rgba(16,18,17,.10);
  --ease:cubic-bezier(.22,.68,.28,1);
  --container:1240px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

/* ---------- base reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;}
a:hover{color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;color:var(--ink);}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:2px;}
::selection{background:var(--brand);color:var(--ink);}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.section{padding:100px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--surface-alt);}
.section-dark{background:var(--dark-section);color:#fff;}
.section-dark h2,.section-dark h3{color:#fff;}
.section-head{margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,36px);
  letter-spacing:-0.015em;
}
.section-head p{
  margin-top:14px;
  max-width:700px;
  color:var(--ink-2);
  font-size:16.5px;
}
.section-dark .section-head p{color:#C9CCC7;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:14px;
}
.section-dark .eyebrow{color:#C9CCC7;}
.inline-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  border-bottom:2px solid var(--brand);
  padding-bottom:2px;
  transition:gap .24s var(--ease);
}
.inline-link:hover{gap:12px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(16,18,17,.07);}
.header-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:9px;
  background:var(--brand);
  color:var(--ink);
  display:grid;
  place-items:center;
  font-weight:900;
  font-size:17px;
  letter-spacing:-.04em;
}
.brand-name{
  font-size:17.5px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.main-nav{flex:0 0 auto;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  display:block;
  padding:9px 13px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  border-radius:6px;
  transition:background .24s var(--ease),color .24s var(--ease);
  white-space:nowrap;
}
.main-nav a:hover{background:var(--surface-alt);color:var(--ink);}
.main-nav a.is-active{color:var(--ink);font-weight:800;}
.main-nav a.is-active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:2px;
  height:2px;
  background:var(--brand);
}
.header-tools{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.nav-search input{
  width:190px;
  height:40px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:var(--bg);
  color:var(--ink);
  transition:width .28s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.nav-search input::placeholder{color:var(--muted);font-size:14px;}
.nav-search input:focus{
  width:260px;
  outline:none;
  border-color:var(--ink);
  background:var(--surface);
  box-shadow:0 0 0 3px rgba(217,255,63,.55);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:10px;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;
  top:0;right:0;
  width:88%;
  max-width:380px;
  height:100%;
  background:var(--surface);
  border-left:1px solid var(--line);
  box-shadow:var(--shadow-2);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  z-index:95;
  display:flex;
  flex-direction:column;
  padding:26px 24px 24px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:var(--surface);
  border-radius:10px;cursor:pointer;font-size:18px;line-height:1;color:var(--ink);
}
.mobile-drawer nav{margin-top:22px;}
.mobile-drawer nav a{
  display:block;
  padding:15px 4px;
  font-size:16px;
  font-weight:700;
  border-bottom:1px solid var(--line);
}
.mobile-drawer nav a.is-active{color:var(--ink);box-shadow:inset 3px 0 0 var(--brand);padding-left:12px;}
.mobile-drawer .drawer-cta{margin-top:auto;padding-top:24px;}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(16,18,17,.5);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);z-index:90;
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:700;
  cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .18s var(--ease),box-shadow .24s var(--ease);
  text-align:center;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-primary:hover{background:var(--brand);color:var(--ink);border-color:var(--brand);transform:translateY(-2px);}
.btn-secondary{background:var(--surface);color:var(--ink);border-color:var(--ink);}
.btn-secondary:hover{background:var(--surface-alt);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--ink);padding:0 4px;min-height:auto;}
.btn-ghost .arrow{transition:transform .24s var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14.5px;}
.btn:active{transform:translateY(0) scale(.99);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;
  background:var(--dark-section);
  overflow:hidden;
  isolation:isolate;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:70% 40%;
  opacity:.42;
  z-index:-2;
}
.cat-hero-veil{
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(16,18,17,.94) 0%,rgba(16,18,17,.82) 46%,rgba(16,18,17,.34) 100%);
  z-index:-1;
}
.cat-hero-inner{
  position:relative;
  padding-top:66px;
  padding-bottom:70px;
  max-width:760px;
}
.cat-hero h1{
  color:#fff;
  font-size:clamp(28px,4vw,46px);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-0.02em;
  margin-bottom:18px;
}
.cat-hero h1 .hl{
  background:var(--brand);
  color:var(--ink);
  padding:0 8px;
  border-radius:var(--r-sm);
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone;
}
.cat-hero-lead{
  color:#D6D9D4;
  font-size:17px;
  max-width:560px;
  margin-bottom:26px;
}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid rgba(255,255,255,.16);
  border-bottom:1px solid rgba(255,255,255,.16);
}
.hero-facts li{
  flex:1 1 160px;
  padding:14px 18px 14px 0;
  color:#C9CCC7;
  font-size:14px;
  font-weight:600;
  border-right:1px solid rgba(255,255,255,.16);
}
.hero-facts li:last-child{border-right:none;}
.hero-facts li strong{display:block;color:#fff;font-size:15.5px;font-weight:800;margin-bottom:2px;}

/* ---------- breadcrumb ---------- */
.breadcrumb-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:15px 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:var(--line);}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;}

/* ---------- category layout: sticky toc + entries ---------- */
.cat-layout{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:56px;
  align-items:start;
}
.cat-intro{
  font-size:16.5px;
  color:var(--ink-2);
  max-width:620px;
  margin-bottom:8px;
}
.toc-wrap{position:relative;}
.toc{
  position:sticky;
  top:100px;
  border-top:2px solid var(--ink);
  padding-top:18px;
}
.toc-title{
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:14px;
}
.toc ol{counter-reset:toc;}
.toc li{margin-bottom:2px;}
.toc a{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:9px 10px 9px 12px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink-2);
  border-left:2px solid transparent;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.toc a .num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
  padding-top:3px;
}
.toc a:hover{background:var(--surface-alt);color:var(--ink);}
.toc a.is-current{
  border-left-color:var(--brand);
  background:var(--surface);
  color:var(--ink);
  font-weight:800;
}
.toc a.is-current .num{color:var(--ink);}
.toc-note{
  margin-top:20px;
  padding:16px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
}
.toc-note p{font-size:13.5px;color:var(--ink-2);margin-bottom:12px;}

/* ---------- entry list ---------- */
.entry-list{border-top:1px solid var(--line);}
.entry{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:20px;
  padding:40px 0;
  border-bottom:1px solid var(--line);
  scroll-margin-top:100px;
}
.entry-num{
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  color:var(--muted);
  padding-top:6px;
  letter-spacing:.04em;
}
.entry h2{
  font-size:clamp(20px,2vw,26px);
  letter-spacing:-0.01em;
  margin-bottom:14px;
}
.entry h2 .accent-bar{
  display:inline-block;
  width:3px;
  height:18px;
  background:var(--brand);
  margin-right:10px;
  vertical-align:-2px;
}
.entry p{color:var(--ink-2);font-size:16.5px;max-width:660px;}
.entry-points{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px 26px;
  margin:20px 0 0;
  max-width:700px;
}
.entry-points li{
  position:relative;
  padding-left:20px;
  font-size:15px;
  color:var(--ink-2);
}
.entry-points li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  background:var(--brand);
  border-radius:2px;
}
.entry-figure{
  margin-top:26px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-alt);
  max-width:660px;
}
.entry-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform 1.2s var(--ease);
}
.entry-figure:hover img{transform:scale(1.03);}
.entry-figure figcaption{
  padding:10px 14px;
  font-size:13px;
  color:var(--muted);
  background:var(--surface);
  border-top:1px solid var(--line);
}
.entry-steps{
  margin-top:22px;
  max-width:660px;
  border-top:1px solid var(--line);
}
.entry-steps li{
  display:grid;
  grid-template-columns:34px minmax(0,1fr);
  gap:14px;
  padding:13px 0;
  border-bottom:1px solid var(--line);
  font-size:15.5px;
  color:var(--ink-2);
}
.entry-steps li strong{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  padding-top:4px;
}

/* ---------- chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.chip{
  display:inline-flex;
  align-items:center;
  padding:5px 13px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink-2);
  background:var(--surface-alt);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
}
.chip-outline{background:var(--surface);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  font-size:17px;
  font-weight:700;
  cursor:pointer;
  list-style:none;
  transition:color .24s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink-2);}
.faq-plus{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
}
.faq-plus::before,
.faq-plus::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
  transition:transform .24s var(--ease);
}
.faq-plus::before{left:0;top:9px;width:20px;height:2px;}
.faq-plus::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-plus::after{transform:rotate(90deg);}
.faq-item[open] .faq-plus::before{transform:rotate(180deg);}
.faq-body{
  padding:0 4px 24px;
  max-width:760px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- related links ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.related-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:26px 24px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.related-card:hover{
  transform:translateY(-2px);
  border-color:var(--ink);
  box-shadow:var(--shadow-2);
}
.related-card .rc-label{
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--muted);
}
.related-card h3{font-size:18px;}
.related-card p{font-size:14.5px;color:var(--ink-2);margin:0;}
.related-card .rc-arrow{
  margin-top:auto;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.related-card:hover .rc-arrow{gap:12px;}
.related-card .rc-arrow{transition:gap .24s var(--ease);}

/* ---------- CTA + form ---------- */
.cta-section{
  background:var(--dark-section);
  color:#fff;
  padding:88px 0;
}
.cta-grid{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:56px;
  align-items:start;
}
.cta-copy h2{
  color:#fff;
  font-size:clamp(24px,2.8vw,34px);
  margin-bottom:16px;
  letter-spacing:-0.015em;
}
.cta-copy p{color:#C9CCC7;font-size:16px;max-width:420px;}
.cta-copy .btn{margin-top:24px;}
.cta-points{margin-top:26px;border-top:1px solid rgba(255,255,255,.14);}
.cta-points li{
  padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,.14);
  font-size:14.5px;
  color:#C9CCC7;
}
.cta-points li strong{color:#fff;font-weight:700;}

.form-panel{
  background:var(--surface);
  border-radius:var(--r-lg);
  padding:32px;
  box-shadow:var(--shadow-2);
  color:var(--ink);
}
.form-panel h3{font-size:20px;margin-bottom:6px;}
.form-panel .form-sub{font-size:14px;color:var(--muted);margin-bottom:22px;}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:700;
  color:var(--ink-2);
  margin-bottom:7px;
}
.field .req{color:var(--accent-2);margin-left:2px;}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:6px;
  color:var(--ink);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(217,255,63,.65);
}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:6px;}
.field .error{display:none;font-size:12.5px;color:var(--accent-2);margin-top:6px;}
.field.has-error input,
.field.has-error select{border-color:var(--accent-2);}
.field.has-error .error{display:block;}
.checkbox-line{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--ink-2);
  line-height:1.7;
  margin-bottom:20px;
}
.checkbox-line input[type="checkbox"]{
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:5px;
  accent-color:var(--ink);
  border-radius:0;
}
.checkbox-line a{text-decoration:underline;text-underline-offset:3px;}
.form-success{
  display:none;
  padding:30px 24px;
  background:var(--surface-alt);
  border-radius:var(--r-md);
  text-align:center;
}
.form-success.is-visible{display:block;}
.form-success .ok-mark{
  width:44px;height:44px;
  margin:0 auto 14px;
  border-radius:50%;
  background:var(--brand);
  color:var(--ink);
  display:grid;place-items:center;
  font-size:20px;font-weight:900;
}
.form-success h4{font-size:18px;margin-bottom:8px;}
.form-success p{font-size:14px;color:var(--ink-2);margin:0;}
.privacy-note{
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
}
.privacy-note a{text-decoration:underline;text-underline-offset:3px;color:var(--ink-2);}

/* ---------- modal ---------- */
.modal-overlay{
  position:fixed;
  inset:0;
  background:rgba(16,18,17,.6);
  backdrop-filter:blur(2px);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:120;
  padding:24px;
}
.modal-overlay.is-open{display:flex;}
.modal-panel{
  position:relative;
  width:100%;
  max-width:520px;
  background:var(--surface);
  border-radius:12px;
  padding:32px;
  box-shadow:var(--shadow-2);
  transform:translateY(8px);
  opacity:0;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
  max-height:calc(100vh - 48px);
  overflow-y:auto;
}
.modal-overlay.is-open .modal-panel{transform:translateY(0);opacity:1;}
.modal-close{
  position:absolute;
  top:14px;right:14px;
  width:40px;height:40px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:10px;
  cursor:pointer;
  font-size:18px;
  line-height:1;
  color:var(--ink);
  transition:background .24s var(--ease);
}
.modal-close:hover{background:var(--surface-alt);}
.modal-panel h3{font-size:20px;margin-bottom:6px;}
.modal-panel .modal-sub{font-size:14px;color:var(--muted);margin-bottom:22px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:#C9CCC7;
  padding:68px 0 32px;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:0;
}
.footer-col{
  padding:0 28px;
  border-left:1px solid rgba(255,255,255,.12);
}
.footer-col:first-child{border-left:none;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:#fff;
  text-transform:uppercase;
  margin-bottom:18px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:800;
  margin-bottom:14px;
}
.footer-desc{color:#9A9E98;font-size:14px;margin:0;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:#C9CCC7;transition:color .24s var(--ease);}
.footer-col ul a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{
  margin-bottom:16px;
  color:#9A9E98;
  font-size:13.5px;
  line-height:1.7;
}
.footer-contact strong{
  display:block;
  color:#fff;
  font-size:14px;
  font-weight:700;
  margin-bottom:2px;
}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:#9A9E98;
}
.footer-bottom a{color:#C9CCC7;}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

/* ---------- reveal animation ---------- */
.reveal-up{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .52s var(--ease),transform .52s var(--ease);
}
.reveal-up.is-in{opacity:1;transform:none;}
.cat-hero h1 .line{display:block;}
.cat-hero h1 .line{opacity:0;transform:translateY(12px);animation:heroLine .52s var(--ease) forwards;}
.cat-hero h1 .line:nth-child(2){animation-delay:.07s;}
.cat-hero h1 .line:nth-child(3){animation-delay:.14s;}
@keyframes heroLine{to{opacity:1;transform:none;}}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-search input{width:160px;}
  .nav-search input:focus{width:210px;}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px;}
  .section{padding:72px 0;}
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .toc{position:static;border-top-width:1px;}
  .toc ol{display:flex;flex-wrap:wrap;gap:6px;}
  .toc li{margin:0;}
  .toc a{border-left:none;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;background:var(--surface);}
  .toc a.is-current{border-color:var(--ink);box-shadow:none;background:var(--brand);}
  .toc a .num{display:none;}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){border-left:none;padding-left:0;}
  .entry-points{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:575px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .header-inner{height:64px;gap:14px;}
  .brand-name{font-size:16px;}
  .header-tools .btn-sm{display:none;}
  .cat-hero-inner{padding-top:44px;padding-bottom:46px;}
  .cat-hero h1{font-size:clamp(25px,7vw,32px);}
  .cat-hero-lead{font-size:15.5px;}
  .hero-facts li{border-right:none;border-bottom:1px solid rgba(255,255,255,.16);padding:12px 0;}
  .hero-facts li:last-child{border-bottom:none;}
  .entry{grid-template-columns:minmax(0,1fr);gap:10px;padding:30px 0;}
  .entry-num{padding-top:0;}
  .entry-points{gap:8px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .form-row{grid-template-columns:minmax(0,1fr);}
  .form-panel{padding:24px 20px;}
  .cta-section{padding:60px 0;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px 0;}
  .footer-col{padding:0;border-left:none;}
  .modal-overlay{padding:0;align-items:flex-end;}
  .modal-panel{max-width:100%;border-radius:12px 12px 0 0;padding-bottom:40px;transform:translateY(24px);}
  .footer-bottom{flex-direction:column;}
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal-up{opacity:1;transform:none;}
  .cat-hero h1 .line{opacity:1;transform:none;animation:none;}
}