/* roulang page: index */
:root{
  --brand-ink:#0C2A22;
  --brand-deep:#17513F;
  --brand-mid:#1F6B4F;
  --brand-lime:#C8F751;
  --brand-lime-soft:#E6FFA8;
  --accent-coral:#FF7A45;
  --bg:#F7F8F3;
  --surface:#FFFFFF;
  --ink:#12211C;
  --muted:#5A6B64;
  --line:rgba(12,42,34,.10);
  --line-strong:rgba(12,42,34,.18);
  --shadow-sm:0 1px 2px rgba(12,42,34,.06);
  --shadow-md:0 12px 32px -12px rgba(12,42,34,.18);
  --shadow-lift:0 26px 60px -22px rgba(12,42,34,.30);
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-mid);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
button{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--brand-ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;inset:0 0 auto 0;z-index:100;transition:background var(--t),box-shadow var(--t),border-color var(--t)}
.nav-bar{
  background:rgba(12,42,34,.30);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-md);
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--t)}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:var(--brand-lime);color:var(--brand-ink);
  display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:0;
  box-shadow:0 6px 18px -8px rgba(200,247,81,.9);
}
.brand-text{
  font-size:18px;font-weight:800;letter-spacing:-.01em;color:#fff;white-space:nowrap;
  transition:color var(--t);
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:600;
  color:rgba(255,255,255,.9);border-radius:8px;transition:color var(--t)
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand-lime);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform var(--t)
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.28);
  background:transparent;color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:background var(--t),border-color var(--t),transform var(--t)
}
.icon-btn:hover{background:rgba(255,255,255,.14)}
.icon-btn:active{transform:translateY(1px)}
.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.28);background:transparent;color:#fff;cursor:pointer;place-items:center}
.menu-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.is-scrolled .nav-bar{background:rgba(247,248,243,.94);border-bottom-color:var(--line);box-shadow:var(--shadow-md)}
.is-scrolled .nav-inner{height:64px}
.is-scrolled .brand-text{color:var(--brand-ink)}
.is-scrolled .nav-link{color:var(--muted)}
.is-scrolled .nav-link:hover,.is-scrolled .nav-link.is-active{color:var(--brand-ink)}
.is-scrolled .nav-link::after{background:var(--brand-mid)}
.is-scrolled .icon-btn{border-color:var(--line-strong);color:var(--brand-ink)}
.is-scrolled .icon-btn:hover{background:rgba(12,42,34,.06)}
.is-scrolled .menu-toggle{border-color:var(--line-strong);color:var(--brand-ink)}

.mobile-panel{
  display:none;overflow:hidden;max-height:0;
  background:var(--brand-ink);border-radius:0 0 24px 24px;
  box-shadow:var(--shadow-lift);transition:max-height 280ms var(--ease);
}
.mobile-panel.is-open{max-height:520px}
.mobile-links{display:flex;flex-direction:column;padding:12px 0 18px}
.mobile-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 24px;color:rgba(255,255,255,.9);font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.08)
}
.mobile-links a:hover{color:var(--brand-lime);background:rgba(255,255,255,.04)}
.mobile-links a.is-active{color:var(--brand-lime)}
.mobile-cta{padding:14px 24px 4px}
.mobile-cta .btn{width:100%}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;
  cursor:pointer;transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t),border-color var(--t)
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-lime);color:var(--brand-ink);box-shadow:0 10px 26px -16px rgba(200,247,81,.9)}
.btn-primary:hover{background:#D8FF6E;color:var(--brand-ink);transform:translateY(-1px);box-shadow:0 16px 34px -16px rgba(12,42,34,.45)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.7);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--brand-ink);border-color:var(--line-strong)}
.btn-outline:hover{background:rgba(12,42,34,.05);border-color:var(--brand-mid);color:var(--brand-ink)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-mid)}
.link-arrow span{transition:transform var(--t)}
.link-arrow:hover span{transform:translateX(3px)}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  background:var(--brand-lime-soft);color:var(--brand-ink);
  font-size:13px;font-weight:600;letter-spacing:.02em
}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:var(--brand-lime-soft);color:var(--brand-ink);
  font-size:13px;font-weight:600;letter-spacing:.02em;white-space:nowrap
}
.badge-num{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:var(--brand-lime);color:var(--brand-ink);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--shadow-sm)
}
.section{padding:84px 0}
@media (max-width:1023px){.section{padding:64px 0}}
@media (max-width:640px){.section{padding:48px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head .eyebrow{display:block;margin-bottom:10px}
.section-head h2{font-size:clamp(23px,3vw,36px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.section-head p{max-width:520px;margin-top:10px;font-size:15px;color:var(--muted)}
@media (max-width:767px){
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  min-height:82vh;display:flex;align-items:center;
  padding:130px 0 92px;
  background:linear-gradient(125deg,#0C2A22 0%,#17513F 58%,#1F6B4F 100%);
}
.hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(200,247,81,.28),transparent 70%);
  filter:blur(18px);pointer-events:none;z-index:0
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy .pill{margin-bottom:22px}
.hero h1{
  font-size:clamp(30px,4.6vw,56px);font-weight:800;line-height:1.14;letter-spacing:-.015em;
  color:#fff;max-width:16em
}
.hero-sub{
  margin-top:20px;max-width:34em;font-size:clamp(15px,1.5vw,17px);
  line-height:1.8;color:rgba(255,255,255,.78)
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:18px;font-size:13px;color:rgba(255,255,255,.55)}
.hero-visual{position:relative}
.hero-shot{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lift);border:1px solid rgba(255,255,255,.16)
}
.hero-shot img{width:100%;aspect-ratio:4/3.2;object-fit:cover}
.shot-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(12,42,34,.88) 0%,rgba(12,42,34,.35) 45%,rgba(12,42,34,0) 78%)
}
.shot-caption{position:absolute;left:22px;right:22px;bottom:20px;color:#fff}
.shot-label{
  display:inline-block;padding:3px 11px;border-radius:999px;
  background:rgba(200,247,81,.92);color:var(--brand-ink);font-size:12px;font-weight:700
}
.shot-caption p{margin-top:10px;font-size:14px;line-height:1.65;color:rgba(255,255,255,.86)}
.float-badge{
  position:absolute;display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:999px;background:var(--brand-lime);color:var(--brand-ink);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 16px 36px -16px rgba(12,42,34,.65)
}
.float-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-ink);opacity:.55}
.badge-a{top:-12px;left:-12px}
.badge-b{bottom:26px;right:-12px}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{min-height:auto;padding:120px 0 72px}
  .hero-shot img{aspect-ratio:16/9}
}
@media (max-width:640px){
  .hero{padding:104px 0 56px}
  .hero-shot img{aspect-ratio:16/10}
  .badge-a{top:-8px;left:8px}
  .badge-b{bottom:14px;right:8px}
  .hero-cta .btn{flex:1 1 100%}
}

/* ============ 数据信任条 ============ */
.trust-wrap{position:relative;z-index:2;margin-top:-46px}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);overflow:hidden
}
.trust-item{padding:26px 24px;border-left:1px solid var(--line)}
.trust-item:first-child{border-left:0}
.trust-num{
  display:block;font-size:clamp(22px,2.4vw,32px);font-weight:800;line-height:1.2;
  color:var(--brand-ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em
}
.trust-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--brand-mid);margin-left:4px}
.trust-label{display:block;margin-top:6px;font-size:13px;color:var(--muted)}
@media (max-width:767px){
  .trust-wrap{margin-top:-32px}
  .trust-bar{grid-template-columns:repeat(2,1fr)}
  .trust-item{padding:20px 18px;border-left:1px solid var(--line);border-top:1px solid var(--line)}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-top:0}
  .trust-item:nth-child(odd){border-left:0}
}

/* ============ 服务阶梯 ============ */
.stair-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
.stair-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.stair-card:nth-child(1){min-height:252px}
.stair-card:nth-child(2){min-height:288px}
.stair-card:nth-child(3){min-height:324px}
.stair-card:nth-child(4){min-height:360px}
.stair-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--line-strong)}
.stair-index{
  font-size:44px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.4px rgba(12,42,34,.22);
  font-variant-numeric:tabular-nums
}
.stair-card h3{margin-top:14px;font-size:20px;font-weight:700;line-height:1.4}
.stair-list{margin-top:14px;display:flex;flex-direction:column;gap:9px}
.stair-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--muted)}
.stair-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-lime)
}
.stair-foot{margin-top:auto;padding-top:18px;font-size:13px;color:var(--muted);border-top:1px dashed var(--line);}
.stair-card .link-arrow{margin-top:14px;font-size:13px}
.stair-card.is-top{
  background:linear-gradient(160deg,#0C2A22 0%,#17513F 100%);
  border:1px solid var(--brand-lime);box-shadow:var(--shadow-lift)
}
.stair-card.is-top h3{color:#fff}
.stair-card.is-top .stair-index{-webkit-text-stroke:1.4px rgba(200,247,81,.55)}
.stair-card.is-top .stair-list li{color:rgba(255,255,255,.75)}
.stair-card.is-top .stair-foot{color:rgba(255,255,255,.6);border-top-color:rgba(255,255,255,.16)}
.stair-card.is-top .link-arrow{color:var(--brand-lime)}
@media (max-width:1023px){
  .stair-grid{grid-template-columns:repeat(2,1fr)}
  .stair-card{min-height:0 !important}
}
@media (max-width:640px){
  .stair-grid{grid-template-columns:1fr}
}

/* ============ 方案对比 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:stretch}
.plan{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.plan h3{font-size:19px;font-weight:700;line-height:1.4}
.plan-price{margin-top:12px;font-size:26px;font-weight:800;color:var(--brand-ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.plan-price small{display:inline-block;margin-left:6px;font-size:13px;font-weight:600;color:var(--muted);letter-spacing:0}
.plan-scope{margin-top:8px;font-size:13px;line-height:1.7;color:var(--muted);min-height:44px}
.plan-feats{margin-top:20px;display:flex;flex-direction:column;gap:11px;flex:1}
.plan-feats li{display:flex;align-items:flex-start;gap:9px;font-size:14px;line-height:1.65;color:var(--ink)}
.plan-feats li .mk{
  flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:5px;
  display:grid;place-items:center;background:var(--brand-lime-soft);color:var(--brand-deep);
  font-size:10px;font-weight:800;line-height:1
}
.plan-feats li.off{color:rgba(90,107,100,.55)}
.plan-feats li.off .mk{background:rgba(12,42,34,.06);color:rgba(12,42,34,.35)}
.plan .btn{margin-top:22px}
.plan.is-featured{
  transform:translateY(-16px);
  border:2px solid var(--brand-lime);
  box-shadow:var(--shadow-lift);
  background:linear-gradient(180deg,#F1FBE2 0%,#FFFFFF 46%)
}
.plan.is-featured:hover{transform:translateY(-20px)}
.plan-flag{
  position:absolute;top:-13px;left:22px;padding:4px 13px;border-radius:999px;
  background:var(--brand-ink);color:var(--brand-lime);font-size:12px;font-weight:700;letter-spacing:.03em
}
@media (max-width:1023px){
  .plan.is-featured{transform:none}
  .plan.is-featured:hover{transform:translateY(-4px)}
}
@media (max-width:767px){
  .plan-grid{
    display:flex;overflow-x:auto;gap:16px;padding-bottom:14px;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch
  }
  .plan{flex:0 0 78vw;scroll-snap-align:start;transform:none !important}
  .plan-flag{top:-12px}
  .plan-grid::-webkit-scrollbar{height:6px}
  .plan-grid::-webkit-scrollbar-thumb{background:rgba(12,42,34,.18);border-radius:999px}
}

/* ============ 限时横幅 ============ */
.timer-band{
  position:relative;overflow:hidden;
  background:linear-gradient(125deg,#0C2A22 0%,#17513F 62%,#1F6B4F 100%);
  border-radius:var(--radius-lg);padding:38px 40px;
  display:flex;align-items:center;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-lift)
}
.timer-band::before{
  content:"";position:absolute;left:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(200,247,81,.28),transparent 70%);
  filter:blur(20px);pointer-events:none
}
.timer{position:relative;display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}
.timer-cell{
  min-width:64px;padding:10px 8px;border-radius:var(--radius-sm);
  background:var(--brand-lime);color:var(--brand-ink);text-align:center;
  font-size:26px;font-weight:800;line-height:1.1;letter-spacing:-.02em
}
.timer-cell span{display:block;font-size:11px;font-weight:600;letter-spacing:.06em;opacity:.7;margin-top:2px}
.timer-sep{color:rgba(255,255,255,.45);font-size:22px;font-weight:800}
.timer-text{position:relative;flex:1 1 280px;color:#fff}
.timer-text strong{display:block;font-size:19px;font-weight:800;line-height:1.45}
.timer-text p{margin-top:6px;font-size:14px;color:rgba(255,255,255,.7)}
.timer-band .btn{position:relative}
@media (max-width:767px){
  .timer-band{padding:28px 24px;gap:22px}
  .timer-cell{min-width:56px;font-size:22px}
  .timer-band .btn{width:100%}
}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.news-grid{grid-template-columns:1fr}}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--line-strong);color:inherit}
.news-thumb{overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 18px}
.news-body h3{
  margin-top:12px;font-size:18px;font-weight:700;line-height:1.5;color:var(--brand-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.news-body p{
  margin-top:9px;font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted)
}
.news-meta .arrow{color:var(--brand-mid);font-weight:800;transition:transform var(--t)}
.news-card:hover .news-meta .arrow{transform:translateX(3px)}
.news-empty{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:rgba(255,255,255,.6);
  color:var(--muted);text-align:center;padding:32px
}
.news-empty svg{color:var(--brand-mid);opacity:.7}
.news-empty p{font-size:15px}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start}
@media (max-width:1023px){.faq-layout{grid-template-columns:1fr;gap:28px}}
.faq-aside h2{font-size:clamp(23px,3vw,36px);font-weight:800;line-height:1.25}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--muted);max-width:30em}
.faq-aside .btn{margin-top:22px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow var(--t),border-color var(--t)
}
.faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--brand-ink);line-height:1.55
}
.faq-q .plus{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:var(--brand-lime-soft);
  display:grid;place-items:center;color:var(--brand-deep);font-size:16px;font-weight:800;
  transition:transform 260ms var(--ease),background var(--t)
}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);background:var(--brand-lime)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ============ 咨询表单 ============ */
.contact-card{
  display:grid;grid-template-columns:5fr 7fr;gap:44px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:44px;box-shadow:var(--shadow-md)
}
@media (max-width:1023px){.contact-card{grid-template-columns:1fr;gap:30px;padding:32px}}
@media (max-width:640px){.contact-card{padding:24px 20px}}
.contact-copy h2{font-size:clamp(23px,3vw,34px);font-weight:800;line-height:1.28}
.contact-copy ul{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.contact-copy li{position:relative;padding-left:18px;font-size:15px;line-height:1.7;color:var(--muted)}
.contact-copy li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-lime)}
.contact-line{
  margin-top:26px;padding:16px 18px;border-radius:var(--radius-sm);
  background:var(--bg);border:1px solid var(--line);font-size:14px;color:var(--muted)
}
.contact-line strong{display:block;font-size:15px;color:var(--brand-ink);font-weight:700;margin-bottom:4px}
.lead-form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--brand-ink)}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);background:#fff;color:var(--ink);font-size:15px;
  font-family:inherit;transition:border-color var(--t),box-shadow var(--t)
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(90,107,100,.55)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-mid);box-shadow:0 0 0 3px rgba(200,247,81,.45)
}
.field input:invalid:not(:placeholder-shown){border-color:var(--accent-coral)}
.check-row{grid-column:1 / -1;display:flex;align-items:flex-start;gap:10px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-mid);flex:0 0 18px}
.check-row label{font-size:14px;font-weight:400;color:var(--muted);line-height:1.7}
.form-note{
  grid-column:1 / -1;font-size:14px;color:var(--brand-deep);font-weight:600;
  padding:12px 14px;border-radius:var(--radius-sm);background:#F1FBE2;border:1px solid rgba(200,247,81,.7)
}
@media (max-width:640px){.lead-form{grid-template-columns:1fr}}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr}}
.footer-brand .brand-text{color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;max-width:24em;color:rgba(255,255,255,.62)}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.78);
  transition:background var(--t),color var(--t),border-color var(--t)
}
.footer-social a:hover{background:rgba(200,247,81,.14);color:var(--brand-lime);border-color:rgba(200,247,81,.5)}
.footer-col h4{font-size:14px;font-weight:700;color:var(--brand-lime);letter-spacing:.03em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--brand-lime)}
.footer-contact li{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer-contact li strong{display:block;font-size:13px;color:rgba(255,255,255,.5);font-weight:600}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45)
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--brand-lime)}

@media (max-width:1023px){
  .nav-links{display:none}
  .menu-toggle{display:grid}
  .mobile-panel{display:block}
  .nav-actions .icon-btn{display:none}
}
@media (max-width:640px){
  .brand-text{font-size:16px}
  .nav-actions .btn-sm{padding:0 14px;font-size:13px;height:38px}
  .nav-inner{gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root {
    --brand-ink: #0C2A22;
    --brand-deep: #17513F;
    --brand-mid: #1F6B4F;
    --brand-lime: #C8F751;
    --brand-lime-soft: #E6FFA8;
    --accent-coral: #FF7A45;
    --bg: #F7F8F3;
    --surface: #FFFFFF;
    --ink: #12211C;
    --muted: #5A6B64;
    --line: rgba(12, 42, 34, 0.10);
    --line-strong: rgba(12, 42, 34, 0.18);
    --r-lg: 24px;
    --r-md: 20px;
    --r-sm: 12px;
    --shadow-sm: 0 1px 2px rgba(12, 42, 34, .06);
    --shadow-md: 0 12px 32px -12px rgba(12, 42, 34, .18);
    --shadow-lift: 0 26px 60px -22px rgba(12, 42, 34, .30);
    --t: 200ms cubic-bezier(.2, .7, .3, 1);
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  }

  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    padding-top: 72px;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.85;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  button { font: inherit; color: inherit; }
  h1, h2, h3, h4 { margin: 0; }
  p { margin: 0; }
  ul, ol { margin: 0; padding: 0; }
  :focus-visible { outline: 2px solid var(--brand-lime); outline-offset: 2px; border-radius: 6px; }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  @media (min-width: 768px) { .container { padding: 0 24px; } }
  @media (min-width: 1024px) { .container { padding: 0 32px; } }

  /* ---------- 导航 ---------- */
  .site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 60;
    background: rgba(247, 248, 243, 0.94);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--line);
    transition: box-shadow var(--t), background var(--t);
  }
  .site-header.is-scrolled { box-shadow: var(--shadow-md); background: rgba(247, 248, 243, 0.98); }
  .header-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 72px;
    transition: height var(--t);
  }
  .site-header.is-scrolled .header-inner { height: 64px; }

  .brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-mark {
    width: 34px; height: 34px;
    border-radius: var(--r-sm);
    background: var(--brand-ink);
    color: var(--brand-lime);
    display: grid; place-items: center;
    font-size: 16px; font-weight: 800;
    letter-spacing: 0;
  }
  .brand-text {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--brand-ink);
    white-space: nowrap;
  }

  .nav-links { display: none; gap: 4px; }
  .nav-link {
    position: relative;
    display: inline-block;
    padding: 8px 12px;
    font-size: 15px;
    color: var(--ink);
    opacity: .86;
    transition: color var(--t), opacity var(--t);
  }
  .nav-link::after {
    content: "";
    position: absolute;
    left: 12px; right: 12px; bottom: 2px;
    height: 2px;
    background: var(--brand-lime);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform var(--t);
  }
  .nav-link:hover { opacity: 1; }
  .nav-link:hover::after,
  .nav-link.is-active::after { transform: scaleX(1); }
  .nav-link.is-active { opacity: 1; font-weight: 600; }

  .header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

  .icon-btn {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border-radius: var(--r-sm);
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--brand-ink);
    cursor: pointer;
    transition: background var(--t), border-color var(--t), transform var(--t);
  }
  .icon-btn:hover { background: var(--brand-lime-soft); border-color: var(--line-strong); }
  .icon-btn:active { transform: translateY(1px); }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border-radius: var(--r-sm);
    font-size: 15px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background var(--t), color var(--t), transform var(--t), box-shadow var(--t), border-color var(--t);
  }
  .btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }
  .btn-primary { background: var(--brand-lime); color: var(--brand-ink); box-shadow: var(--shadow-sm); }
  .btn-primary:hover { background: #d5ff6d; transform: translateY(-1px); box-shadow: var(--shadow-md); }
  .btn-primary:active { transform: translateY(0); }
  .btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
  .btn-ghost:hover { background: var(--surface); border-color: var(--brand-mid); color: var(--brand-mid); }
  .btn-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; font-weight: 600; color: var(--brand-mid);
    border-bottom: 1px solid transparent;
    transition: color var(--t), border-color var(--t);
  }
  .btn-link svg { transition: transform var(--t); }
  .btn-link:hover { border-bottom-color: var(--brand-mid); }
  .btn-link:hover svg { transform: translateX(3px); }

  .menu-toggle {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border-radius: var(--r-sm);
    border: 1px solid var(--line-strong);
    background: var(--surface);
    cursor: pointer;
  }
  .mobile-menu {
    max-height: 0;
    overflow: hidden;
    background: var(--brand-ink);
    border-radius: 0 0 var(--r-lg) var(--r-lg);
    transition: max-height 260ms cubic-bezier(.2, .7, .3, 1);
  }
  .mobile-menu.is-open { max-height: 480px; }
  .mobile-menu a {
    display: flex;
    align-items: center;
    height: 48px;
    padding: 0 24px;
    color: #fff;
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }
  .mobile-menu a:last-of-type { border-bottom: 0; }
  .mobile-menu .mobile-cta { padding: 12px 20px 20px; border-bottom: 0; height: auto; }
  .mobile-menu .mobile-cta .btn { width: 100%; }

  @media (min-width: 1024px) {
    .nav-links { display: flex; margin-left: 12px; }
    .menu-toggle { display: none; }
    .mobile-menu { display: none; }
  }
  @media (max-width: 767px) {
    body { padding-top: 64px; }
    .header-inner { height: 64px; }
    .brand-text { font-size: 15px; }
    .header-actions .btn-sm { display: none; }
  }

  /* ---------- 文章头部 ---------- */
  .article-hero {
    background: linear-gradient(180deg, #F0F3E9 0%, var(--bg) 100%);
    padding: 28px 0 8px;
  }
  .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 22px;
  }
  .breadcrumb a { color: var(--muted); transition: color var(--t); }
  .breadcrumb a:hover { color: var(--brand-mid); }
  .breadcrumb .sep { color: var(--line-strong); }
  .breadcrumb .current {
    max-width: 260px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: var(--ink);
  }

  .article-head { max-width: 800px; margin: 0 auto; text-align: center; }
  .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--brand-lime-soft);
    color: var(--brand-ink);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .02em;
  }
  .article-head h1 {
    font-size: clamp(26px, 4vw, 38px);
    font-weight: 800;
    line-height: 1.24;
    letter-spacing: -0.015em;
    margin: 16px 0 16px;
  }
  .meta-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--muted);
  }
  .meta-row .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--line-strong); }
  .rule-lime {
    display: block;
    width: 40px; height: 3px;
    border-radius: 2px;
    background: var(--brand-lime);
    margin: 22px auto 0;
  }

  /* ---------- 正文区 ---------- */
  .article-main { padding: 28px 0 8px; }
  .article-layout { display: grid; gap: 28px; }
  @media (min-width: 1024px) {
    .article-layout { grid-template-columns: minmax(0, 1fr) 288px; gap: 40px; align-items: start; }
  }

  .article-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    padding: 22px;
  }
  @media (min-width: 768px) { .article-panel { padding: 40px; } }

  .article-cover {
    margin: 0 0 28px;
    border-radius: var(--r-md);
    overflow: hidden;
    aspect-ratio: 21 / 9;
    background: #F1FBE2;
  }
  .article-cover img { width: 100%; height: 100%; object-fit: cover; }

  .article-body { font-size: 16.5px; line-height: 1.9; color: var(--ink); }
  .article-body > *:first-child { margin-top: 0; }
  .article-body h2 {
    position: relative;
    font-size: 24px;
    font-weight: 800;
    line-height: 1.4;
    margin: 2em 0 .8em;
    padding-left: 14px;
  }
  .article-body h2::before {
    content: "";
    position: absolute;
    left: 0; top: .3em;
    width: 4px; height: 20px;
    border-radius: 2px;
    background: var(--brand-lime);
  }
  .article-body h3 { font-size: 19px; font-weight: 700; line-height: 1.5; margin: 1.6em 0 .6em; }
  .article-body h4 { font-size: 17px; font-weight: 700; margin: 1.4em 0 .5em; }
  .article-body p { margin: 0 0 1.15em; }
  .article-body a { color: var(--brand-mid); border-bottom: 1px solid rgba(31, 107, 79, .35); transition: border-color var(--t), color var(--t); }
  .article-body a:hover { border-bottom-color: var(--brand-mid); }
  .article-body ul, .article-body ol { margin: 0 0 1.15em; padding-left: 1.4em; }
  .article-body li { margin-bottom: .5em; }
  .article-body ul li::marker { color: var(--brand-mid); }
  .article-body ol li::marker { color: var(--brand-mid); font-weight: 700; }
  .article-body blockquote {
    margin: 1.4em 0;
    padding: 16px 20px;
    border-left: 4px solid var(--brand-lime);
    background: var(--bg);
    border-radius: 0 16px 16px 0;
    color: var(--ink);
  }
  .article-body blockquote p:last-child { margin-bottom: 0; }
  .article-body img { border-radius: 16px; margin: 1.4em auto; }
  .article-body figure { margin: 1.4em 0; }
  .article-body figcaption { font-size: 13px; color: var(--muted); text-align: center; margin-top: 10px; }
  .article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.4em 0;
    font-size: 15px;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    overflow: hidden;
  }
  .article-body thead th { background: #F1FBE2; font-weight: 700; }
  .article-body th, .article-body td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; }
  .article-body tbody tr:nth-child(even) { background: rgba(247, 248, 243, .8); }
  .article-body code {
    background: #EAF7D6;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: .92em;
  }

  .empty-article {
    text-align: center;
    padding: 56px 20px;
    border: 1px dashed var(--line-strong);
    border-radius: var(--r-md);
    background: #FCFDF9;
  }
  .empty-article h2 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
  .empty-article p { color: var(--muted); font-size: 15px; margin-bottom: 20px; }

  /* ---------- 侧栏 ---------- */
  .article-side { display: flex; flex-direction: column; gap: 20px; }
  @media (min-width: 1024px) {
    .article-side { position: sticky; top: 96px; }
  }
  .side-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
  }
  .side-card h3 { font-size: 15px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 12px; color: var(--brand-ink); }
  .side-list { list-style: none; }
  .side-list li + li { border-top: 1px solid var(--line); }
  .side-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 11px 0;
    font-size: 14px;
    color: var(--ink);
    transition: color var(--t);
  }
  .side-list a:hover { color: var(--brand-mid); }
  .side-list .num {
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    font-variant-numeric: tabular-nums;
  }
  .side-cta {
    background: linear-gradient(125deg, #0C2A22 0%, #17513F 58%, #1F6B4F 100%);
    border: 0;
    color: #fff;
    border-radius: var(--r-md);
    padding: 24px;
    box-shadow: var(--shadow-md);
  }
  .side-cta h3 { color: #fff; margin-bottom: 8px; }
  .side-cta p { font-size: 14px; line-height: 1.75; color: rgba(255, 255, 255, .74); margin-bottom: 16px; }
  .side-cta .btn { width: 100%; }

  /* ---------- 信息条 ---------- */
  .section { padding: 64px 0; }
  @media (min-width: 1024px) { .section { padding: 88px 0; } }
  .section-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
  .section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--brand-mid);
    margin-bottom: 10px;
  }
  .section-title {
    font-size: clamp(23px, 3vw, 36px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--brand-ink);
  }
  .section-sub { font-size: 15px; color: var(--muted); max-width: 520px; margin-top: 10px; }

  .points-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
  @media (min-width: 640px) { .points-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .points-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; } }
  .point-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--t), box-shadow var(--t);
  }
  .point-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
  .point-card .point-index {
    font-size: 13px;
    font-weight: 800;
    color: var(--brand-mid);
    font-variant-numeric: tabular-nums;
    letter-spacing: .08em;
  }
  .point-card h3 { font-size: 18px; font-weight: 700; margin: 10px 0 8px; color: var(--brand-ink); }
  .point-card p { font-size: 14px; line-height: 1.8; color: var(--muted); }

  /* ---------- 相关推荐 ---------- */
  .card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--t), box-shadow var(--t);
  }
  .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
  .news-grid { display: grid; gap: 24px; grid-template-columns: 1fr; }
  @media (min-width: 640px) { .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .news-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
  .news-thumb { aspect-ratio: 16 / 10; overflow: hidden; background: #F1FBE2; }
  .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 400ms cubic-bezier(.2, .7, .3, 1); }
  .card:hover .news-thumb img { transform: scale(1.03); }
  .news-body { padding: 20px; }
  .news-body h3 {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.45;
    margin: 12px 0 8px;
    color: var(--brand-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-body p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--muted);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--line);
    font-size: 13px;
    color: var(--muted);
  }
  .news-foot .arrow { color: var(--brand-mid); display: inline-flex; transition: transform var(--t); }
  .card:hover .news-foot .arrow { transform: translateX(3px); }

  /* ---------- FAQ ---------- */
  .faq-layout { display: grid; gap: 32px; }
  @media (min-width: 1024px) { .faq-layout { grid-template-columns: 4fr 8fr; gap: 48px; } }
  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
  }
  .faq-item + .faq-item { margin-top: 12px; }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px;
    background: none;
    border: 0;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    text-align: left;
    color: var(--brand-ink);
    cursor: pointer;
    transition: background var(--t);
  }
  .faq-q:hover { background: rgba(200, 247, 81, .12); }
  .faq-icon { flex-shrink: 0; color: var(--brand-mid); transition: transform var(--t); }
  .faq-item.is-open .faq-icon { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height 260ms cubic-bezier(.2, .7, .3, 1); }
  .faq-item.is-open .faq-a { max-height: 340px; }
  .faq-a p { padding: 0 20px 20px; font-size: 15px; line-height: 1.85; color: var(--muted); }

  /* ---------- CTA ---------- */
  .cta-band {
    background: linear-gradient(125deg, #0C2A22 0%, #17513F 58%, #1F6B4F 100%);
    border-radius: var(--r-lg);
    padding: 36px 28px;
    color: #fff;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    position: relative;
    overflow: hidden;
  }
  .cta-band::before {
    content: "";
    position: absolute;
    right: -80px; top: -120px;
    width: 420px; height: 420px;
    background: radial-gradient(closest-side, rgba(200, 247, 81, .28), transparent 70%);
    pointer-events: none;
  }
  .cta-band h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; line-height: 1.3; position: relative; }
  .cta-band p { margin-top: 10px; font-size: 15px; color: rgba(255, 255, 255, .76); max-width: 540px; position: relative; }
  .cta-band .btn { position: relative; }

  /* ---------- 页脚 ---------- */
  .site-footer {
    background: var(--brand-ink);
    color: rgba(255, 255, 255, .72);
    padding: 64px 0 0;
    margin-top: 64px;
  }
  .footer-grid {
    display: grid;
    gap: 36px;
    grid-template-columns: 1fr;
    padding-bottom: 48px;
  }
  @media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
  @media (min-width: 1024px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; } }
  .footer-brand .brand-mark { background: var(--brand-lime); color: var(--brand-ink); }
  .footer-brand .brand-text { color: #fff; }
  .footer-desc { font-size: 14px; line-height: 1.85; margin-top: 16px; max-width: 320px; color: rgba(255, 255, 255, .66); }
  .footer-social { display: flex; gap: 10px; margin-top: 20px; }
  .footer-social a {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border-radius: var(--r-sm);
    border: 1px solid rgba(255, 255, 255, .16);
    color: rgba(255, 255, 255, .8);
    transition: background var(--t), color var(--t), border-color var(--t);
  }
  .footer-social a:hover { background: var(--brand-lime); color: var(--brand-ink); border-color: var(--brand-lime); }
  .footer-col h4 { font-size: 14px; font-weight: 700; color: var(--brand-lime); margin-bottom: 16px; }
  .footer-col ul { list-style: none; }
  .footer-col li + li { margin-top: 12px; }
  .footer-col a { font-size: 14px; color: rgba(255, 255, 255, .7); transition: color var(--t); }
  .footer-col a:hover { color: var(--brand-lime); }
  .footer-contact li { font-size: 14px; line-height: 1.7; }
  .footer-contact strong { display: inline-block; color: rgba(255, 255, 255, .9); font-weight: 600; margin-right: 8px; }
  .footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 0 28px;
    border-top: 1px solid rgba(255, 255, 255, .12);
    font-size: 13px;
    color: rgba(255, 255, 255, .55);
  }
  .footer-bottom a { color: rgba(255, 255, 255, .72); transition: color var(--t); }
  .footer-bottom a:hover { color: var(--brand-lime); }

  @media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
  }

/* roulang page: category1 */
:root{
  --brand-ink:#0C2A22;
  --brand-deep:#17513F;
  --brand-mid:#1F6B4F;
  --brand-lime:#C8F751;
  --brand-lime-soft:#E6FFA8;
  --accent-coral:#FF7A45;
  --bg:#F7F8F3;
  --surface:#FFFFFF;
  --ink:#12211C;
  --muted:#5A6B64;
  --line:rgba(12,42,34,0.10);
  --line-strong:rgba(12,42,34,0.18);
  --shadow-sm:0 1px 2px rgba(12,42,34,.06);
  --shadow-md:0 12px 32px -12px rgba(12,42,34,.18);
  --shadow-lift:0 26px 60px -22px rgba(12,42,34,.30);
  --radius-lg:24px;
  --radius-md:20px;
  --radius-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,248,243,.94);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-md);background:rgba(247,248,243,.98);}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--header-h);transition:height .2s var(--ease);}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,#0C2A22 0%,#17513F 60%,#1F6B4F 100%);
  color:var(--brand-lime);
  display:grid;place-items:center;
  font-weight:800;font-size:17px;line-height:1;
  flex:0 0 auto;
}
.brand-text{
  font-weight:800;font-size:17px;letter-spacing:-.01em;
  color:var(--ink);white-space:nowrap;
}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;font-weight:600;color:var(--muted);
  transition:color .2s var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand-lime),var(--brand-mid));
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
@media (min-width:1024px){.header-actions{margin-left:0;}}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);background:var(--surface);color:var(--brand-ink);
  display:none;place-items:center;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
@media (min-width:1024px){.icon-btn{display:grid;}}
.icon-btn:hover{background:var(--brand-lime-soft);border-color:transparent;transform:translateY(-1px);}
.menu-toggle{
  display:grid;place-items:center;width:44px;height:44px;border-radius:var(--radius-sm);
  border:1px solid var(--line-strong);background:var(--surface);color:var(--brand-ink);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.menu-toggle:hover{background:var(--brand-lime-soft);border-color:transparent;}
@media (min-width:1024px){.menu-toggle{display:none;}}
.mobile-panel{
  overflow:hidden;max-height:0;
  background:var(--brand-ink);
  border-radius:0 0 var(--radius-lg) var(--radius-lg);
  transition:max-height .3s var(--ease);
}
.mobile-panel.is-open{max-height:560px;}
@media (min-width:1024px){.mobile-panel{display:none;}}
.mobile-panel ul{padding:10px 20px 20px;}
.mobile-panel li{border-bottom:1px solid rgba(255,255,255,.10);}
.mobile-panel li:last-child{border-bottom:0;}
.mobile-panel a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;color:#fff;font-size:15px;font-weight:600;
}
.mobile-panel a.m-link:hover{color:var(--brand-lime);}
.mobile-panel .m-cta{padding:4px 20px 24px;}
.mobile-panel .m-cta .btn{width:100%;}

/* ============ 按钮与标签 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand-lime);color:var(--brand-ink);box-shadow:0 10px 24px -14px rgba(12,42,34,.55);}
.btn-primary:hover{background:#d4fb6b;transform:translateY(-1px);box-shadow:0 18px 32px -16px rgba(12,42,34,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-mid);color:var(--brand-mid);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-mid);
  border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.btn-link svg{transition:transform .2s var(--ease);}
.btn-link:hover{color:var(--brand-deep);border-color:var(--brand-mid);}
.btn-link:hover svg{transform:translateX(3px);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-lime-soft);color:var(--brand-ink);
  font-size:13px;font-weight:600;letter-spacing:.02em;line-height:1.7;
}
.chip-outline{
  background:transparent;border:1px solid var(--line-strong);color:var(--muted);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--brand-mid);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand-lime);}

/* ============ 页面头 ============ */
.page-head{
  position:relative;overflow:hidden;
  padding:calc(var(--header-h) + 46px) 0 56px;
  background:linear-gradient(180deg,#F2F5EA 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;
  background:radial-gradient(closest-side,rgba(200,247,81,.30),transparent 70%);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;}
.crumb a{color:var(--muted);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--brand-mid);}
.crumb .sep{color:var(--line-strong);}
.crumb .current{color:var(--brand-ink);font-weight:600;}
.page-head h1{
  font-size:clamp(30px,4.6vw,50px);
  font-weight:800;line-height:1.16;letter-spacing:-.015em;
  max-width:18em;margin:14px 0 18px;
}
.page-head .lead{
  max-width:44em;font-size:clamp(15px,1.4vw,17px);color:var(--muted);line-height:1.85;
}
.head-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
@media (min-width:1024px){.section{padding:84px 0;}}
.section-head{max-width:660px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(23px,3vw,34px);font-weight:800;line-height:1.28;letter-spacing:-.01em;margin:12px 0 12px;
}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center .eyebrow{justify-content:center;}
.hr-line{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 步骤卡 ============ */
.steps{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){.steps{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr);gap:22px;}}
.step-card{
  position:relative;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:rgba(31,107,79,.30);}
.step-num{
  font-size:34px;font-weight:800;line-height:1;letter-spacing:-.02em;
  color:rgba(12,42,34,.13);font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:19px;font-weight:700;line-height:1.4;margin:14px 0 10px;}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.step-card .step-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line-strong);
  font-size:13px;color:var(--brand-mid);font-weight:600;
}
@media (min-width:1024px){
  .step-card:not(:last-child)::after{
    content:"";position:absolute;top:50%;right:-22px;width:22px;height:0;
    border-top:1px dashed rgba(12,42,34,.26);
  }
}

/* ============ 说明列表 ============ */
.info-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.info-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:18px 20px;border-top:1px solid var(--line);
  transition:background .2s var(--ease);
}
@media (min-width:768px){.info-row{padding:20px 26px;align-items:center;}}
.info-row:first-child{border-top:0;}
.info-row:hover{background:rgba(200,247,81,.14);}
.row-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--brand-lime-soft);color:var(--brand-ink);
  display:grid;place-items:center;
}
.info-row h3{font-size:16.5px;font-weight:700;line-height:1.45;margin-bottom:4px;}
.info-row p{font-size:14px;color:var(--muted);line-height:1.75;}
.info-row .row-tag{margin-left:auto;display:none;}
@media (min-width:768px){.info-row .row-tag{display:inline-flex;}}

/* ============ 功能入口网格 ============ */
.entry-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.entry-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:560px){.entry-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.entry-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.entry-card{
  position:relative;overflow:hidden;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px 22px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);background:#F1FBE2;border-color:rgba(31,107,79,.28);}
.entry-card .watermark{
  position:absolute;right:14px;top:6px;
  font-size:52px;font-weight:800;line-height:1;
  color:rgba(12,42,34,.06);font-variant-numeric:tabular-nums;pointer-events:none;
}
.entry-icon{
  width:44px;height:44px;border-radius:var(--radius-sm);
  background:linear-gradient(135deg,#0C2A22,#1F6B4F);color:var(--brand-lime);
  display:grid;place-items:center;margin-bottom:16px;
}
.entry-card h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:8px;}
.entry-card p{font-size:14px;color:var(--muted);line-height:1.78;min-height:3.4em;}
.entry-card .chip{margin-top:16px;}

/* ============ 图文交替 ============ */
.feature-row{display:grid;gap:26px;align-items:center;}
.feature-row + .feature-row{margin-top:48px;}
@media (min-width:900px){
  .feature-row{grid-template-columns:5fr 7fr;gap:52px;}
  .feature-row + .feature-row{margin-top:64px;}
  .feature-row.is-reverse{grid-template-columns:7fr 5fr;}
  .feature-row.is-reverse .feature-media{order:2;}
}
.feature-media{position:relative;border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease);}
.feature-media:hover img{transform:scale(1.03);}
.feature-text h3{font-size:clamp(20px,2.4vw,26px);font-weight:800;line-height:1.35;margin:12px 0 14px;}
.feature-text p{font-size:15px;color:var(--muted);line-height:1.9;margin-bottom:12px;}
.feature-points{margin:18px 0 20px;display:grid;gap:10px;}
.feature-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink);}
.feature-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-lime);
  box-shadow:0 0 0 3px rgba(200,247,81,.24);
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;gap:28px;}
@media (min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:52px;align-items:start;}}
.faq-aside h2{font-size:clamp(23px,3vw,32px);font-weight:800;line-height:1.3;margin:12px 0 12px;}
.faq-aside p{color:var(--muted);font-size:15px;line-height:1.85;margin-bottom:22px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.is-open{border-color:rgba(31,107,79,.32);box-shadow:var(--shadow-md);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:18px 20px;text-align:left;
  font-size:16.5px;font-weight:700;line-height:1.5;color:var(--ink);
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-lime-soft);color:var(--brand-ink);
  font-size:18px;font-weight:700;line-height:1;
  transition:transform .26s var(--ease),background .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-lime);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{padding:0 20px 20px;font-size:15px;color:var(--muted);line-height:1.85;}

/* ============ CTA 横条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(125deg,#0C2A22 0%,#17513F 58%,#1F6B4F 100%);
  padding:38px 26px;
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  color:#fff;
}
@media (min-width:768px){.cta-band{padding:44px 40px;}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.18;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;top:-140px;left:-90px;width:420px;height:420px;
  background:radial-gradient(closest-side,rgba(200,247,81,.26),transparent 70%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(20px,2.6vw,28px);font-weight:800;line-height:1.35;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.8;max-width:36em;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.78);padding:60px 0 0;margin-top:56px;}
@media (min-width:1024px){.site-footer{padding-top:72px;margin-top:84px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:rgba(200,247,81,.14);color:var(--brand-lime);}
.footer-desc{margin:16px 0 18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:30em;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.8);
  display:grid;place-items:center;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{background:rgba(200,247,81,.16);border-color:transparent;color:var(--brand-lime);transform:translateY(-2px);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--brand-lime);margin-bottom:14px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;font-size:14px;line-height:1.7;}
.footer-col a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--brand-lime);}
.footer-contact li{color:rgba(255,255,255,.72);font-size:14px;}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;margin-right:8px;}
.footer-bottom{
  margin-top:44px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.footer-bottom a:hover{color:var(--brand-lime);}

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

/* roulang page: category2 */
:root{
  --brand-ink:#0C2A22;
  --brand-deep:#17513F;
  --brand-mid:#1F6B4F;
  --brand-lime:#C8F751;
  --brand-lime-soft:#E6FFA8;
  --accent-coral:#FF7A45;
  --bg:#F7F8F3;
  --surface:#FFFFFF;
  --ink:#12211C;
  --muted:#5A6B64;
  --line:rgba(12,42,34,.10);
  --line-strong:rgba(12,42,34,.18);
  --soft-green:#F1FBE2;
  --shadow-sm:0 1px 2px rgba(12,42,34,.06);
  --shadow-md:0 12px 32px -12px rgba(12,42,34,.18);
  --shadow-lift:0 26px 60px -22px rgba(12,42,34,.30);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  padding-top:72px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;}
:focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 24px;}}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(247,248,243,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:box-shadow 200ms var(--ease),background 200ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,248,243,.98);
  box-shadow:var(--shadow-md);
  border-bottom-color:var(--line-strong);
}
.header-inner{display:flex;align-items:center;gap:16px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--brand-ink);flex:none;}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand-deep),var(--brand-mid));
  color:var(--brand-lime);font-weight:800;font-size:16px;
}
.brand-text{white-space:nowrap;}
.nav-links{display:none;}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--line-strong);border-radius:var(--r-sm);
  background:var(--surface);cursor:pointer;transition:background 200ms var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:var(--brand-ink);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}
.nav-toggle:hover{background:var(--soft-green);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  max-height:0;overflow:hidden;
  background:var(--brand-ink);
  border-radius:0 0 var(--r-lg) var(--r-lg);
  transition:max-height 280ms var(--ease);
}
.mobile-panel.is-open{max-height:560px;}
.m-link{
  display:flex;align-items:center;height:48px;padding:0 24px;
  color:#fff;font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.m-link:hover{background:rgba(200,247,81,.10);}
.m-link.is-active{color:var(--brand-lime);}
.mobile-panel .btn{margin:16px 24px 22px;width:calc(100% - 48px);}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;height:40px;
    padding:0 12px;font-size:15px;font-weight:600;color:var(--ink);
    border-radius:10px;transition:color 200ms var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
    background:var(--brand-lime);border-radius:2px;
    transform:scaleX(0);transform-origin:left;
    transition:transform 200ms var(--ease);
  }
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand-mid);}
  .header-actions{margin-left:16px;}
  .nav-toggle{display:none;}
  .mobile-panel{display:none;}
}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:15px;font-weight:700;
  cursor:pointer;transition:transform 200ms var(--ease),background 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
}
.btn-primary{background:var(--brand-lime);color:var(--brand-ink);box-shadow:0 8px 20px -12px rgba(12,42,34,.55);}
.btn-primary:hover{background:#d8ff74;transform:translateY(-1px);box-shadow:var(--shadow-lift);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand-ink);}
.btn-ghost:hover{background:rgba(200,247,81,.18);border-color:var(--brand-mid);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}
.btn-dark-outline{background:transparent;border-color:rgba(255,255,255,.36);color:#fff;}
.btn-dark-outline:hover{background:rgba(255,255,255,.10);border-color:#fff;}
.tag{
  display:inline-flex;align-items:center;
  background:var(--brand-lime-soft);color:var(--brand-ink);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  border-radius:999px;padding:4px 12px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-mid);font-size:14px;font-weight:700;
  border-bottom:1px solid transparent;
  transition:border-color 200ms var(--ease),color 200ms var(--ease);
}
.text-link:hover{border-bottom-color:var(--brand-mid);}
.text-link .arw{transition:transform 200ms var(--ease);}
.text-link:hover .arw{transform:translateX(3px);}

/* ---------- 页面头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:52px 0 44px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;top:-160px;right:-120px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(200,247,81,.34),transparent 70%);
  filter:blur(6px);pointer-events:none;
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(12,42,34,.055) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.6;
}
.page-head .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{transition:color 200ms var(--ease);}
.breadcrumb a:hover{color:var(--brand-mid);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .now{color:var(--brand-ink);font-weight:600;}
.page-head h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.16;letter-spacing:-.015em;font-weight:800;
  max-width:900px;
}
.page-lead{
  margin-top:18px;max-width:660px;
  font-size:clamp(15px,1.6vw,18px);color:var(--muted);
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:6px 14px;
  font-size:13px;font-weight:600;color:var(--brand-ink);
  box-shadow:var(--shadow-sm);
}
.chip i{width:6px;height:6px;border-radius:999px;background:var(--brand-lime);display:inline-block;}

/* ---------- 板块 ---------- */
.section{padding:64px 0;}
@media(min-width:1024px){.section{padding:92px 0;}}
.section-head{max-width:720px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-mid);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--brand-lime);}
.section-head h2{font-size:clamp(23px,3vw,36px);line-height:1.27;font-weight:800;letter-spacing:-.01em;}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}

/* ---------- 图文交替 ---------- */
.split-list{display:grid;gap:52px;}
@media(min-width:900px){.split-list{gap:72px;}}
.split-row{display:grid;grid-template-columns:minmax(0,1fr);gap:26px;align-items:center;}
@media(min-width:900px){
  .split-row{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;}
  .split-row.is-reverse{grid-template-columns:minmax(0,7fr) minmax(0,5fr);}
  .split-row.is-reverse .split-media{order:2;}
}
.split-media{
  position:relative;border-radius:var(--r-md);overflow:hidden;
  background:var(--soft-green);border:1px solid var(--line);
  box-shadow:var(--shadow-md);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 300ms var(--ease);}
.split-media:hover img{transform:scale(1.02);}
.split-media .tag{position:absolute;left:16px;top:16px;background:rgba(255,255,255,.92);color:var(--brand-ink);box-shadow:var(--shadow-sm);}
.split-body h3{
  margin:14px 0 12px;
  font-size:clamp(20px,2.2vw,27px);line-height:1.4;font-weight:800;letter-spacing:-.01em;
}
.split-body p{color:var(--muted);font-size:15.5px;margin-bottom:12px;}
.point-list{list-style:none;display:grid;gap:10px;margin:16px 0 22px;}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink);}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:999px;
  background:var(--brand-lime);box-shadow:0 0 0 3px rgba(200,247,81,.28);
}

/* ---------- 对比列卡 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.compare-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.compare-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);}
.compare-card.is-featured{background:var(--soft-green);border-color:rgba(200,247,81,.9);box-shadow:var(--shadow-md);}
.compare-card h3{font-size:19px;font-weight:800;line-height:1.4;}
.compare-card .cap{margin-top:6px;font-size:13.5px;color:var(--muted);}
.feature{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 0;font-size:14.5px;line-height:1.6;
  border-bottom:1px dashed var(--line);
}
.feature:last-of-type{border-bottom:0;}
.feature .mk{
  flex:none;display:grid;place-items:center;
  width:18px;height:18px;margin-top:3px;border-radius:999px;
  background:var(--brand-lime);color:var(--brand-ink);
  font-size:11px;font-weight:800;
}
.feature.is-off{color:rgba(90,107,100,.6);}
.feature.is-off .mk{background:rgba(12,42,34,.08);color:rgba(12,42,34,.4);}
.compare-card .text-link{margin-top:18px;}

/* ---------- 信息说明列表 ---------- */
.info-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.info-row{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:flex-start;
  padding:18px 20px;border-bottom:1px solid var(--line);min-height:64px;
  transition:background 200ms var(--ease);
}
.info-row:last-child{border-bottom:0;}
.info-row:hover{background:rgba(200,247,81,.10);}
.info-icon{
  display:grid;place-items:center;width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--soft-green);color:var(--brand-mid);
}
.info-row h4{font-size:16px;font-weight:700;line-height:1.5;}
.info-row p{font-size:14px;color:var(--muted);line-height:1.75;margin-top:4px;}
@media(min-width:768px){
  .info-row{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;padding:20px 24px;}
  .info-row .side{font-size:13px;color:var(--muted);white-space:nowrap;}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:32px;}
@media(min-width:1024px){.faq-wrap{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;}}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item.is-open{border-color:rgba(31,107,79,.4);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;line-height:1.55;
}
.faq-q .ic{
  flex:none;display:grid;place-items:center;width:24px;height:24px;border-radius:999px;
  background:var(--soft-green);color:var(--brand-mid);font-size:15px;font-weight:800;
  transition:transform 260ms var(--ease),background 200ms var(--ease);
}
.faq-item.is-open .faq-q .ic{transform:rotate(45deg);background:var(--brand-lime);color:var(--brand-ink);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a p{padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--muted);}
.faq-aside{
  align-self:start;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px;box-shadow:var(--shadow-sm);
}
@media(min-width:1024px){.faq-aside{position:sticky;top:96px;}}
.faq-aside h2{font-size:clamp(21px,2.4vw,26px);font-weight:800;line-height:1.35;}
.faq-aside p{margin-top:12px;font-size:14.5px;color:var(--muted);}
.faq-aside .btn{margin-top:20px;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:40px 24px;
  color:#fff;
  display:grid;gap:24px;align-items:center;
  background-image:linear-gradient(125deg,rgba(12,42,34,.95) 0%,rgba(23,81,63,.93) 58%,rgba(31,107,79,.90) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-lift);
}
.cta-band::before{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(closest-side,rgba(200,247,81,.28),transparent 70%);
  filter:blur(10px);pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.01em;}
.cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.78);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media(min-width:900px){
  .cta-band{grid-template-columns:minmax(0,1fr) auto;padding:52px 48px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-ink);color:rgba(255,255,255,.78);}
.footer-grid{display:grid;gap:32px;padding:56px 0 40px;}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px;}}
.site-footer .brand{color:#fff;}
.footer-desc{margin:16px 0 18px;max-width:320px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  display:grid;place-items:center;width:36px;height:36px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.82);
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease);
}
.footer-social a:hover{background:var(--brand-lime);color:var(--brand-ink);border-color:var(--brand-lime);transform:translateY(-2px);}
.footer-col h4{font-size:14px;font-weight:700;color:var(--brand-lime);margin-bottom:14px;}
.footer-col ul{list-style:none;display:grid;gap:10px;font-size:14px;}
.footer-col a{transition:color 200ms var(--ease);}
.footer-col a:hover{color:var(--brand-lime);}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-contact strong{color:#fff;font-weight:600;margin-right:8px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.82);transition:color 200ms var(--ease);}
.footer-bottom a:hover{color:var(--brand-lime);}

@media(max-width:767px){
  body{padding-top:64px;}
  .header-inner{height:64px;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
    --brand-ink:#0C2A22;
    --brand-deep:#17513F;
    --brand-mid:#1F6B4F;
    --brand-lime:#C8F751;
    --brand-lime-soft:#E6FFA8;
    --accent-coral:#FF7A45;
    --bg:#F7F8F3;
    --surface:#FFFFFF;
    --ink:#12211C;
    --muted:#5A6B64;
    --line:rgba(12,42,34,.10);
    --line-strong:rgba(12,42,34,.18);
    --radius-lg:24px;
    --radius-md:20px;
    --radius-sm:12px;
    --shadow-sm:0 1px 2px rgba(12,42,34,.06);
    --shadow-md:0 12px 32px -12px rgba(12,42,34,.18);
    --shadow-lift:0 26px 60px -22px rgba(12,42,34,.30);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:6px;}
  ::selection{background:var(--brand-lime);color:var(--brand-ink);}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ============ Header / Nav ============ */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:rgba(247,248,243,.94);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);
    transition:background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .header-inner{
    display:flex;align-items:center;gap:20px;
    height:72px;
    transition:height .2s var(--ease);
  }
  .site-header.is-scrolled .header-inner{height:64px;}

  .brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand-deep),var(--brand-mid));
    color:var(--brand-lime);
    font-size:17px;font-weight:800;line-height:1;
    box-shadow:var(--shadow-sm);
  }
  .brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}

  .nav-links{display:none;align-items:center;gap:2px;margin-left:auto;}
  @media (min-width:1024px){.nav-links{display:flex;}}
  .nav-link{
    position:relative;
    display:inline-block;
    padding:9px 12px;
    font-size:15px;
    color:var(--ink);
    border-radius:10px;
    white-space:nowrap;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;
    background:var(--brand-lime);border-radius:2px;
    transform:scaleX(0);transform-origin:left;
    transition:transform .2s var(--ease);
  }
  .nav-link:hover{background:rgba(200,247,81,.14);}
  .nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--brand-deep);font-weight:700;}

  .header-actions{display:flex;align-items:center;gap:8px;margin-left:auto;}
  @media (min-width:1024px){.header-actions{margin-left:0;}}
  .icon-btn{
    width:40px;height:40px;border-radius:999px;
    display:grid;place-items:center;
    color:var(--ink);border:1px solid var(--line);
    background:rgba(255,255,255,.7);
    transition:background .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .icon-btn:hover{background:var(--brand-lime-soft);border-color:var(--line-strong);transform:translateY(-1px);}
  .icon-btn:active{transform:translateY(0);}

  .menu-toggle{
    width:40px;height:40px;border-radius:12px;
    display:grid;place-items:center;
    border:1px solid var(--line);
    background:rgba(255,255,255,.7);
    transition:background .2s var(--ease);
  }
  .menu-toggle:hover{background:var(--brand-lime-soft);}
  @media (min-width:1024px){.menu-toggle{display:none;}}

  .mobile-menu{
    overflow:hidden;max-height:0;
    background:var(--brand-ink);
    border-radius:0 0 24px 24px;
    transition:max-height .3s var(--ease);
  }
  .mobile-menu.is-open{max-height:520px;}
  @media (min-width:1024px){.mobile-menu{display:none;}}
  .mobile-menu-inner{padding:12px 20px 22px;}
  .mobile-link{
    display:flex;align-items:center;justify-content:space-between;
    height:48px;padding:0 14px;border-radius:12px;
    color:#EAF3EC;font-size:15px;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .mobile-link:hover,.mobile-link.is-active{background:rgba(200,247,81,.14);color:var(--brand-lime);}
  .mobile-cta{
    display:flex;align-items:center;justify-content:center;
    height:48px;margin-top:10px;border-radius:12px;
    background:var(--brand-lime);color:var(--brand-ink);
    font-weight:700;font-size:15px;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .mobile-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(200,247,81,.9);}

  /* ============ Buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:12px;
    font-size:15px;font-weight:700;line-height:1;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-primary{
    background:var(--brand-lime);color:var(--brand-ink);
    box-shadow:0 10px 24px -16px rgba(12,42,34,.9);
  }
  .btn-primary:hover{background:#D4FB6B;transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(12,42,34,.75);}
  .btn-primary:active{transform:translateY(0);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
  .btn-outline{
    background:transparent;color:var(--ink);
    border:1px solid var(--line-strong);
  }
  .btn-outline:hover{background:var(--brand-lime-soft);border-color:var(--brand-mid);transform:translateY(-1px);}
  .btn-ghost{
    background:transparent;color:var(--brand-mid);
    padding:0;height:auto;font-weight:700;
  }
  .btn-ghost .arrow{transition:transform .2s var(--ease);}
  .btn-ghost:hover .arrow{transform:translateX(3px);}
  .btn-ghost-light{
    background:transparent;color:#F2F7F3;
    border:1px solid rgba(255,255,255,.36);
  }
  .btn-ghost-light:hover{background:rgba(255,255,255,.10);transform:translateY(-1px);}

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;font-weight:700;color:var(--brand-mid);
    border-bottom:1px solid transparent;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .text-link .arrow{transition:transform .2s var(--ease);}
  .text-link:hover{border-color:var(--brand-mid);}
  .text-link:hover .arrow{transform:translateX(3px);}

  /* ============ Page head ============ */
  main{padding-top:72px;}
  .page-head{
    position:relative;
    padding:44px 0 56px;
    background:
      radial-gradient(closest-side at 88% 12%,rgba(200,247,81,.34),transparent 72%),
      linear-gradient(180deg,#F3F6EC 0%,#F7F8F3 100%);
    overflow:hidden;
  }
  .page-head::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:radial-gradient(rgba(12,42,34,.06) 1px,transparent 1px);
    background-size:22px 22px;
    opacity:.5;
  }
  .page-head-grid{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1fr;gap:32px;align-items:center;
  }
  @media (min-width:1024px){
    .page-head{padding:56px 0 72px;}
    .page-head-grid{grid-template-columns:7fr 5fr;gap:48px;}
  }
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px;}
  .breadcrumb a{transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--brand-mid);}
  .breadcrumb .current{color:var(--ink);font-weight:600;}
  .breadcrumb span[aria-hidden]{opacity:.5;}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:5px 14px;border-radius:999px;
    background:var(--brand-lime-soft);color:var(--brand-ink);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
    margin-bottom:18px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--brand-mid);}

  h1{
    font-size:clamp(30px,4.6vw,52px);
    line-height:1.14;letter-spacing:-.015em;font-weight:800;
    color:var(--ink);
  }
  .page-lead{
    margin-top:16px;
    font-size:16px;color:var(--muted);
    max-width:38em;
  }
  .page-head-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:28px;}

  .page-head-visual{
    position:relative;
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-lift);
    border:1px solid var(--line);
    background:#E9EFE4;
    aspect-ratio:16/11;
  }
  .page-head-visual img{width:100%;height:100%;object-fit:cover;}
  .head-badge{
    position:absolute;left:16px;bottom:16px;
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;border-radius:999px;
    background:var(--brand-lime);color:var(--brand-ink);
    font-size:12.5px;font-weight:700;
    font-variant-numeric:tabular-nums;
    box-shadow:0 10px 24px -14px rgba(12,42,34,.9);
  }

  /* ============ Section basics ============ */
  .section{padding:48px 0;}
  @media (min-width:768px){.section{padding:64px 0;}}
  @media (min-width:1024px){.section{padding:88px 0;}}
  .section-tint{background:#F1F4EA;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

  .section-head{max-width:760px;margin-bottom:32px;}
  .sec-tag{
    display:inline-block;
    padding:4px 12px;border-radius:999px;
    background:var(--brand-lime-soft);color:var(--brand-ink);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
    margin-bottom:14px;
  }
  h2{
    font-size:clamp(23px,3vw,34px);
    line-height:1.25;font-weight:800;letter-spacing:-.01em;
    color:var(--ink);
  }
  .sec-desc{margin-top:12px;font-size:15px;color:var(--muted);}

  /* ============ Filter chips ============ */
  .filter-row{
    display:flex;flex-wrap:wrap;gap:10px;
    margin-bottom:32px;
  }
  .chip{
    display:inline-flex;align-items:center;
    padding:8px 16px;border-radius:999px;
    background:var(--surface);color:var(--muted);
    border:1px solid var(--line);
    font-size:13.5px;font-weight:600;
    box-shadow:var(--shadow-sm);
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .chip:hover{background:var(--brand-lime-soft);color:var(--brand-ink);border-color:var(--line-strong);}
  .chip.is-on{
    background:var(--brand-lime);color:var(--brand-ink);
    border-color:transparent;
  }

  /* ============ Info card grid ============ */
  .info-grid{
    display:grid;grid-template-columns:1fr;gap:24px;
    align-items:start;
  }
  @media (min-width:640px){.info-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.info-grid{grid-template-columns:repeat(3,1fr);gap:26px;}}

  .info-card{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
    overflow:hidden;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--line-strong);}
  .info-card:hover .info-card-media img{transform:scale(1.03);}

  .info-card-media{
    position:relative;overflow:hidden;
    aspect-ratio:16/10;
    background:#EAF1E4;
  }
  .info-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
  .info-card.tall .info-card-media{aspect-ratio:16/12;}
  .info-card.wide .info-card-media{aspect-ratio:16/9;}

  .card-index{
    position:absolute;top:12px;right:14px;
    font-size:34px;font-weight:800;line-height:1;
    color:rgba(255,255,255,.82);
    text-shadow:0 2px 12px rgba(12,42,34,.45);
    font-variant-numeric:tabular-nums;
    letter-spacing:-.02em;
  }

  .info-card-body{padding:20px 22px 22px;}
  .info-card-body h3{
    font-size:19px;font-weight:700;line-height:1.4;
    color:var(--ink);
  }
  .info-card-body p{
    margin-top:10px;
    font-size:14.5px;color:var(--muted);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-foot{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    margin-top:18px;padding-top:16px;
    border-top:1px solid var(--line);
  }
  .tag{
    display:inline-flex;align-items:center;
    padding:4px 12px;border-radius:999px;
    background:var(--brand-lime-soft);color:var(--brand-ink);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
    white-space:nowrap;
  }

  /* ============ Project matrix ============ */
  .project-grid{
    display:grid;grid-template-columns:repeat(2,1fr);gap:16px;
  }
  @media (min-width:768px){.project-grid{grid-template-columns:repeat(3,1fr);gap:20px;}}
  @media (min-width:1024px){.project-grid{grid-template-columns:repeat(6,1fr);}}
  .project-card{
    display:flex;flex-direction:column;align-items:flex-start;gap:10px;
    padding:20px 18px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    box-shadow:var(--shadow-sm);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  }
  .project-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:var(--line-strong);background:#FBFDF6;}
  .project-ico{
    width:40px;height:40px;border-radius:12px;
    display:grid;place-items:center;
    background:#F1FBE2;color:var(--brand-mid);
  }
  .project-card strong{font-size:15.5px;font-weight:700;color:var(--ink);}
  .project-card span{font-size:13px;color:var(--muted);line-height:1.6;}

  /* ============ Timeline ============ */
  .timeline{
    position:relative;
    padding-left:26px;
    max-width:860px;
  }
  .timeline::before{
    content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;
    background:var(--line-strong);
  }
  .timeline li{position:relative;padding:0 0 28px;}
  .timeline li:last-child{padding-bottom:0;}
  .timeline li::before{
    content:"";position:absolute;left:-26px;top:8px;
    width:15px;height:15px;border-radius:999px;
    background:var(--surface);
    border:3px solid var(--brand-mid);
    box-shadow:0 0 0 4px rgba(200,247,81,.28);
  }
  .tl-meta{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:700;color:var(--brand-deep);
    background:var(--brand-lime-soft);
    padding:3px 12px;border-radius:999px;
    margin-bottom:10px;
    font-variant-numeric:tabular-nums;
  }
  .timeline h3{font-size:18px;font-weight:700;color:var(--ink);}
  .timeline p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.8;}

  /* ============ FAQ ============ */
  .faq-wrap{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:48px;align-items:start;}}
  .faq-aside p{font-size:15px;color:var(--muted);margin-top:14px;}
  .faq-aside .btn{margin-top:22px;}

  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    overflow:hidden;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item:hover{border-color:var(--line-strong);box-shadow:var(--shadow-md);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;
    text-align:left;
    font-size:17px;font-weight:700;color:var(--ink);
    line-height:1.5;
  }
  .faq-ico{
    flex:none;width:26px;height:26px;border-radius:999px;
    display:grid;place-items:center;
    background:#F1FBE2;color:var(--brand-mid);
    transition:transform .26s var(--ease),background .2s var(--ease);
  }
  .faq-item.is-open .faq-ico{transform:rotate(45deg);background:var(--brand-lime);}
  .faq-a{
    max-height:0;overflow:hidden;
    transition:max-height .26s var(--ease);
  }
  .faq-item.is-open .faq-a{max-height:340px;}
  .faq-a-inner{
    padding:0 22px 20px;
    font-size:15px;color:var(--muted);line-height:1.85;
    border-top:1px solid var(--line);
    padding-top:14px;
  }

  /* ============ CTA band ============ */
  .cta-band{
    padding:0 0 64px;
  }
  @media (min-width:1024px){.cta-band{padding:0 0 88px;}}
  .cta-band-inner{
    position:relative;
    display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
    padding:36px 28px;
    border-radius:var(--radius-lg);
    background:linear-gradient(125deg,#0C2A22 0%,#17513F 58%,#1F6B4F 100%);
    overflow:hidden;
    box-shadow:var(--shadow-lift);
  }
  @media (min-width:768px){
    .cta-band-inner{grid-template-columns:1fr auto;padding:42px 44px;gap:32px;}
  }
  .cta-band-inner::before{
    content:"";position:absolute;width:420px;height:420px;
    top:-160px;left:-120px;pointer-events:none;
    background:radial-gradient(closest-side,rgba(200,247,81,.28),transparent 70%);
    filter:blur(8px);
  }
  .cta-band-inner > *{position:relative;z-index:1;}
  .cta-band h2{color:#FFFFFF;font-size:clamp(21px,2.6vw,30px);}
  .cta-band p{margin-top:10px;color:rgba(255,255,255,.76);font-size:15px;max-width:34em;}
  .cta-band-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ============ Footer ============ */
  .site-footer{
    background:var(--brand-ink);
    color:#CBD9D2;
    padding:56px 0 0;
  }
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:36px;
    padding-bottom:40px;
  }
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}}

  .site-footer .brand{margin-bottom:16px;}
  .site-footer .brand-mark{background:rgba(200,247,81,.16);color:var(--brand-lime);box-shadow:none;}
  .site-footer .brand-text{color:#FFFFFF;}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(203,217,210,.82);max-width:30em;}
  .footer-social{display:flex;gap:10px;margin-top:20px;}
  .footer-social a{
    width:38px;height:38px;border-radius:12px;
    display:grid;place-items:center;
    border:1px solid rgba(255,255,255,.16);
    color:#CBD9D2;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .footer-social a:hover{background:rgba(200,247,81,.16);color:var(--brand-lime);border-color:rgba(200,247,81,.4);transform:translateY(-2px);}

  .footer-col h4{
    font-size:14px;font-weight:700;color:var(--brand-lime);
    margin-bottom:16px;letter-spacing:.02em;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:14px;color:rgba(203,217,210,.84);transition:color .2s var(--ease);}
  .footer-col a:hover{color:var(--brand-lime);}
  .footer-contact li{font-size:13.5px;color:rgba(203,217,210,.78);display:flex;gap:10px;line-height:1.7;}
  .footer-contact strong{color:#EAF3EC;font-weight:600;flex:none;min-width:60px;}

  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
    padding:20px 0 26px;
    border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(203,217,210,.66);
  }
  .footer-bottom a{color:rgba(203,217,210,.8);transition:color .2s var(--ease);}
  .footer-bottom a:hover{color:var(--brand-lime);}

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

/* roulang page: category4 */
:root{
    --brand-ink:#0C2A22;
    --brand-deep:#17513F;
    --brand-mid:#1F6B4F;
    --brand-lime:#C8F751;
    --brand-lime-soft:#E6FFA8;
    --accent-coral:#FF7A45;
    --bg:#F7F8F3;
    --surface:#FFFFFF;
    --ink:#12211C;
    --muted:#5A6B64;
    --line:rgba(12,42,34,0.10);
    --line-strong:rgba(12,42,34,0.18);
    --soft-green:#F1FBE2;
    --radius-lg:24px;
    --radius-md:20px;
    --radius-sm:12px;
    --shadow-sm:0 1px 2px rgba(12,42,34,.06);
    --shadow-md:0 12px 32px -12px rgba(12,42,34,.18);
    --shadow-lift:0 26px 60px -22px rgba(12,42,34,.30);
    --ease:cubic-bezier(.2,.7,.3,1);
    --t:200ms cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand-lime);outline-offset:2px;border-radius:8px;}
  ::selection{background:rgba(200,247,81,.55);color:var(--brand-ink);}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }
  @media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
  @media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:60;
    height:72px;
    background:rgba(12,42,34,.30);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid rgba(255,255,255,.14);
    box-shadow:var(--shadow-md);
    transition:background-color var(--t),height var(--t),border-color var(--t),box-shadow var(--t);
  }
  .site-header.is-solid,
  .site-header.is-scrolled{
    background:rgba(247,248,243,.94);
    border-bottom-color:var(--line);
    height:64px;
  }
  .nav-inner{
    height:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
  }
  .brand{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-weight:800;
    font-size:17px;
    letter-spacing:.01em;
    color:#fff;
    transition:color var(--t);
    flex:none;
  }
  .brand-mark{
    width:34px;height:34px;
    border-radius:10px;
    background:var(--brand-lime);
    color:var(--brand-ink);
    display:grid;place-items:center;
    font-weight:800;
    font-size:17px;
    flex:none;
  }
  .brand-text{white-space:nowrap;}
  .site-header.is-solid .brand,
  .site-header.is-scrolled .brand{color:var(--ink);}

  .nav-links{
    display:none;
    align-items:center;
    gap:26px;
    height:100%;
  }
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:72px;
    font-size:15px;
    font-weight:600;
    color:#fff;
    white-space:nowrap;
    transition:color var(--t);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;right:0;
    bottom:16px;
    height:2px;
    border-radius:2px;
    background:var(--brand-lime);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform var(--t);
  }
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active::after{transform:scaleX(1);}
  .site-header.is-solid .nav-link,
  .site-header.is-scrolled .nav-link{color:var(--ink);}
  .site-header.is-solid .nav-link.is-active,
  .site-header.is-scrolled .nav-link.is-active{color:var(--brand-mid);}

  .nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
  .icon-btn{
    width:40px;height:40px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.28);
    background:transparent;
    color:#fff;
    display:grid;place-items:center;
    transition:background-color var(--t),border-color var(--t),color var(--t),transform var(--t);
  }
  .icon-btn:hover{background:rgba(200,247,81,.22);border-color:rgba(200,247,81,.6);}
  .site-header.is-solid .icon-btn,
  .site-header.is-scrolled .icon-btn{border-color:var(--line-strong);color:var(--brand-ink);}
  .site-header.is-solid .icon-btn:hover,
  .site-header.is-scrolled .icon-btn:hover{background:rgba(200,247,81,.35);border-color:var(--brand-mid);}

  .nav-toggle{
    width:40px;height:40px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.28);
    background:transparent;
    color:#fff;
    display:grid;place-items:center;
    transition:background-color var(--t),border-color var(--t),color var(--t);
  }
  .site-header.is-solid .nav-toggle,
  .site-header.is-scrolled .nav-toggle{border-color:var(--line-strong);color:var(--brand-ink);}
  .nav-toggle:hover{background:rgba(200,247,81,.22);}

  @media (min-width:1024px){
    .nav-links{display:flex;}
    .nav-toggle{display:none;}
  }
  @media (max-width:1023px){
    .nav-actions .btn{display:none;}
  }

  .mobile-panel{
    position:fixed;
    top:0;left:0;right:0;
    z-index:55;
    background:var(--brand-ink);
    padding:88px 20px 24px;
    border-radius:0 0 24px 24px;
    box-shadow:var(--shadow-lift);
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity var(--t),transform var(--t);
  }
  .mobile-panel.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .mobile-panel a.m-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:48px;
    color:rgba(255,255,255,.86);
    font-size:15px;
    font-weight:600;
    border-bottom:1px solid rgba(255,255,255,.10);
  }
  .mobile-panel a.m-link.is-active{color:var(--brand-lime);}
  .mobile-panel .btn{width:100%;margin-top:18px;}
  @media (min-width:1024px){.mobile-panel{display:none;}}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:12px;
    border:1px solid transparent;
    font-size:15px;
    font-weight:700;
    white-space:nowrap;
    transition:background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  }
  .btn-primary{
    background:var(--brand-lime);
    color:var(--brand-ink);
    box-shadow:var(--shadow-sm);
  }
  .btn-primary:hover{background:#D6FF6E;transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(12,42,34,.55);}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
  .btn-ghost{
    background:transparent;
    color:var(--brand-ink);
    border-color:var(--line-strong);
  }
  .btn-ghost:hover{background:rgba(200,247,81,.20);border-color:var(--brand-mid);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:700;
    color:var(--brand-mid);
    transition:color var(--t),gap var(--t);
  }
  .btn-link:hover{gap:10px;color:var(--brand-deep);}

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:5px 12px;
    border-radius:999px;
    background:var(--brand-lime-soft);
    color:var(--brand-ink);
    font-size:13px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .eyebrow-dark{
    background:rgba(200,247,81,.16);
    color:var(--brand-lime);
  }

  /* ============ 页面头 ============ */
  .page-head{
    position:relative;
    padding-top:calc(64px + 48px);
    padding-bottom:56px;
    background:
      radial-gradient(620px 320px at 88% -12%, rgba(200,247,81,.42), transparent 70%),
      linear-gradient(180deg,#EEF6E0 0%,#F7F8F3 100%);
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-head::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(12,42,34,.05) 1px, transparent 1px);
    background-size:22px 22px;
    opacity:.5;
    pointer-events:none;
  }
  .page-head .container{position:relative;z-index:1;}
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--muted);
    margin-bottom:22px;
    flex-wrap:wrap;
  }
  .breadcrumb a{transition:color var(--t);}
  .breadcrumb a:hover{color:var(--brand-mid);}
  .breadcrumb span[aria-current]{color:var(--brand-mid);font-weight:600;}

  .page-head-grid{
    display:grid;
    gap:28px;
  }
  @media (min-width:1024px){
    .page-head-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center;}
  }
  .page-title{
    font-size:clamp(28px,4.2vw,44px);
    font-weight:800;
    line-height:1.18;
    letter-spacing:-.015em;
    margin:16px 0 0;
    color:var(--brand-ink);
  }
  .page-lead{
    margin-top:16px;
    font-size:16px;
    line-height:1.8;
    color:var(--muted);
    max-width:560px;
  }
  .head-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:26px;
  }

  .head-card{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    box-shadow:var(--shadow-md);
    padding:26px 24px;
  }
  .head-card-title{
    font-size:15px;
    font-weight:800;
    color:var(--brand-ink);
    margin-bottom:14px;
  }
  .head-list{display:grid;gap:10px;}
  .head-list li{
    position:relative;
    padding-left:18px;
    font-size:14.5px;
    color:var(--ink);
  }
  .head-list li::before{
    content:"";
    position:absolute;
    left:0;top:11px;
    width:6px;height:6px;
    border-radius:50%;
    background:var(--brand-mid);
  }
  .head-card-note{
    margin-top:18px;
    padding-top:16px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }

  /* ============ 通用板块 ============ */
  .section{padding:64px 0;}
  @media (min-width:768px){.section{padding:84px 0;}}
  .section-head{
    display:flex;
    flex-wrap:wrap;
    align-items:flex-end;
    justify-content:space-between;
    gap:18px;
    margin-bottom:36px;
  }
  .section-title{
    font-size:clamp(23px,3vw,36px);
    font-weight:800;
    line-height:1.25;
    letter-spacing:-.01em;
    margin-top:14px;
    color:var(--brand-ink);
  }
  .section-desc{
    margin-top:10px;
    max-width:520px;
    font-size:15px;
    color:var(--muted);
  }

  /* ============ FAQ 与侧卡 ============ */
  .split-layout{display:grid;gap:28px;}
  @media (min-width:1024px){
    .split-layout{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px;align-items:start;}
  }
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    overflow:hidden;
    transition:box-shadow var(--t),border-color var(--t);
  }
  .faq-item:hover{box-shadow:var(--shadow-md);}
  .faq-item.is-open{border-color:rgba(31,107,79,.35);box-shadow:var(--shadow-md);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:20px 22px;
    background:none;
    border:0;
    text-align:left;
    font-size:17px;
    font-weight:700;
    line-height:1.55;
    color:var(--ink);
  }
  .faq-icon{
    flex:none;
    color:var(--brand-mid);
    transition:transform 260ms var(--ease),color var(--t);
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand-deep);}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height 260ms var(--ease);
  }
  .faq-a-inner{
    padding:0 22px 20px;
    font-size:15px;
    line-height:1.85;
    color:var(--muted);
  }

  .aside-card{
    position:relative;
    background:linear-gradient(140deg,#0C2A22 0%,#17513F 62%,#1F6B4F 100%);
    color:#fff;
    border-radius:var(--radius-lg);
    padding:30px 26px;
    box-shadow:var(--shadow-lift);
    overflow:hidden;
  }
  .aside-card::before{
    content:"";
    position:absolute;
    top:-120px;right:-110px;
    width:320px;height:320px;
    background:radial-gradient(closest-side,rgba(200,247,81,.30),transparent 70%);
    pointer-events:none;
  }
  .aside-card > *{position:relative;z-index:1;}
  .aside-title{
    font-size:20px;
    font-weight:800;
    line-height:1.4;
    margin-top:14px;
  }
  .aside-list{display:grid;gap:14px;margin-top:20px;}
  .aside-list li{
    position:relative;
    padding-left:20px;
    font-size:14.5px;
    line-height:1.7;
    color:rgba(255,255,255,.84);
  }
  .aside-list li::before{
    content:"";
    position:absolute;
    left:0;top:10px;
    width:7px;height:7px;
    border-radius:50%;
    background:var(--brand-lime);
  }
  .aside-card .btn{width:100%;margin-top:24px;}
  .aside-note{
    margin-top:14px;
    font-size:13px;
    color:rgba(255,255,255,.6);
    text-align:center;
  }
  @media (min-width:1024px){
    .aside-card{position:sticky;top:96px;}
  }

  /* ============ 自查步骤卡 ============ */
  .step-grid{display:grid;gap:20px;}
  @media (min-width:640px){.step-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.step-grid{grid-template-columns:repeat(4,1fr);}}
  .step-card{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-md);
    padding:26px 22px 24px;
    box-shadow:var(--shadow-sm);
    transition:transform var(--t),box-shadow var(--t),border-color var(--t);
    overflow:hidden;
  }
  .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift);border-color:rgba(31,107,79,.28);}
  .step-card::after{
    content:attr(data-num);
    position:absolute;
    top:10px;right:16px;
    font-size:46px;
    font-weight:800;
    line-height:1;
    color:rgba(12,42,34,.055);
    font-variant-numeric:tabular-nums;
    pointer-events:none;
  }
  .step-tag{
    display:inline-block;
    font-size:12px;
    font-weight:700;
    letter-spacing:.08em;
    color:var(--brand-mid);
    background:var(--soft-green);
    border-radius:999px;
    padding:3px 10px;
  }
  .step-title{
    margin-top:14px;
    font-size:18px;
    font-weight:800;
    line-height:1.4;
    color:var(--brand-ink);
  }
  .step-text{
    margin-top:10px;
    font-size:14.5px;
    line-height:1.75;
    color:var(--muted);
  }

  /* ============ 图文交替行 ============ */
  .media-row{display:grid;gap:28px;align-items:center;}
  @media (min-width:900px){.media-row{grid-template-columns:5fr 7fr;gap:52px;}}
  .media-img{
    aspect-ratio:4/3;
    border-radius:var(--radius-md);
    overflow:hidden;
    box-shadow:var(--shadow-md);
    background:var(--soft-green);
  }
  .media-img img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
  .media-img:hover img{transform:scale(1.03);}
  .media-title{
    margin-top:14px;
    font-size:clamp(21px,2.4vw,26px);
    font-weight:800;
    line-height:1.35;
    color:var(--brand-ink);
  }
  .media-text{
    margin-top:14px;
    font-size:15.5px;
    line-height:1.85;
    color:var(--muted);
  }
  .media-text + .media-text{margin-top:12px;}
  .media-row .btn-link{margin-top:20px;}

  /* ============ 处理流程 ============ */
  .flow{display:grid;gap:18px;}
  @media (min-width:768px){.flow{grid-template-columns:repeat(3,1fr);}}
  .flow-item{
    position:relative;
    background:var(--soft-green);
    border:1px solid rgba(31,107,79,.14);
    border-radius:var(--radius-md);
    padding:24px 22px;
  }
  .flow-num{
    width:36px;height:36px;
    border-radius:50%;
    background:var(--brand-ink);
    color:var(--brand-lime);
    display:grid;place-items:center;
    font-size:14px;
    font-weight:800;
    font-variant-numeric:tabular-nums;
  }
  .flow-title{
    margin-top:14px;
    font-size:17px;
    font-weight:800;
    color:var(--brand-ink);
  }
  .flow-text{
    margin-top:8px;
    font-size:14.5px;
    line-height:1.75;
    color:var(--muted);
  }

  /* ============ 深色 CTA 横条 ============ */
  .cta-band{
    position:relative;
    background:linear-gradient(125deg,#0C2A22 0%,#17513F 58%,#1F6B4F 100%);
    border-radius:var(--radius-lg);
    padding:38px 28px;
    color:#fff;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    overflow:hidden;
    box-shadow:var(--shadow-lift);
  }
  @media (min-width:768px){.cta-band{padding:46px 44px;}}
  .cta-band::before{
    content:"";
    position:absolute;
    left:-120px;top:-140px;
    width:420px;height:420px;
    background:radial-gradient(closest-side,rgba(200,247,81,.26),transparent 70%);
    pointer-events:none;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
    background-size:22px 22px;
    pointer-events:none;
  }
  .cta-band > *{position:relative;z-index:1;}
  .cta-title{
    font-size:clamp(21px,2.6vw,30px);
    font-weight:800;
    line-height:1.3;
  }
  .cta-text{
    margin-top:10px;
    font-size:15px;
    color:rgba(255,255,255,.76);
    max-width:560px;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ============ 页脚 ============ */
  .site-footer{
    background:var(--brand-ink);
    color:rgba(255,255,255,.72);
    padding:64px 0 0;
    margin-top:64px;
  }
  .footer-grid{display:grid;gap:36px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}}
  .footer-brand .brand{color:#fff;font-size:18px;}
  .footer-desc{
    margin-top:16px;
    font-size:14px;
    line-height:1.8;
    color:rgba(255,255,255,.64);
    max-width:320px;
  }
  .footer-social{display:flex;gap:10px;margin-top:20px;}
  .footer-social a{
    width:38px;height:38px;
    border-radius:10px;
    border:1px solid rgba(255,255,255,.16);
    display:grid;place-items:center;
    color:rgba(255,255,255,.8);
    transition:background-color var(--t),border-color var(--t),color var(--t),transform var(--t);
  }
  .footer-social a:hover{
    background:rgba(200,247,81,.16);
    border-color:rgba(200,247,81,.5);
    color:var(--brand-lime);
    transform:translateY(-2px);
  }
  .footer-col h4{
    color:var(--brand-lime);
    font-size:14px;
    font-weight:700;
    margin-bottom:16px;
  }
  .footer-col ul{display:grid;gap:10px;}
  .footer-col a{
    font-size:14px;
    color:rgba(255,255,255,.72);
    transition:color var(--t);
  }
  .footer-col a:hover{color:var(--brand-lime);}
  .footer-contact li{
    font-size:14px;
    line-height:1.7;
    color:rgba(255,255,255,.68);
  }
  .footer-contact strong{
    display:inline-block;
    min-width:64px;
    color:rgba(255,255,255,.92);
    font-weight:600;
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    margin-top:44px;
    padding:20px 0 24px;
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:space-between;
    font-size:13px;
    color:rgba(255,255,255,.55);
  }
  .footer-bottom a{color:rgba(255,255,255,.7);transition:color var(--t);}
  .footer-bottom a:hover{color:var(--brand-lime);}

  /* ============ 咨询表单 ============ */
  .consult-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-md);
    padding:30px 24px;
    display:grid;
    gap:28px;
  }
  @media (min-width:900px){
    .consult-card{grid-template-columns:5fr 7fr;gap:40px;padding:40px 38px;}
  }
  .consult-points{display:grid;gap:12px;margin-top:20px;}
  .consult-points li{
    position:relative;
    padding-left:18px;
    font-size:14.5px;
    line-height:1.75;
    color:var(--muted);
  }
  .consult-points li::before{
    content:"";
    position:absolute;
    left:0;top:10px;
    width:6px;height:6px;
    border-radius:50%;
    background:var(--brand-mid);
  }
  .consult-contact{
    margin-top:22px;
    padding-top:18px;
    border-top:1px solid var(--line);
    font-size:14px;
    color:var(--muted);
  }
  .consult-contact strong{color:var(--brand-ink);}
  .form-grid{display:grid;gap:16px;}
  @media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}.form-grid .full{grid-column:1 / -1;}}
  .field label{
    display:block;
    font-size:14px;
    font-weight:600;
    color:var(--brand-ink);
    margin-bottom:7px;
  }
  .field input,
  .field select,
  .field textarea{
    width:100%;
    background:#fff;
    border:1px solid var(--line-strong);
    border-radius:var(--radius-sm);
    padding:13px 14px;
    font-size:15px;
    color:var(--ink);
    font-family:inherit;
    transition:border-color var(--t),box-shadow var(--t);
    height:48px;
  }
  .field textarea{height:auto;min-height:112px;resize:vertical;line-height:1.7;}
  .field input::placeholder,
  .field textarea::placeholder{color:rgba(90,107,100,.6);}
  .field input:focus,
  .field select:focus,
  .field textarea:focus{
    outline:none;
    border-color:var(--brand-mid);
    box-shadow:0 0 0 3px rgba(200,247,81,.55);
  }
  .check-row{
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:13.5px;
    color:var(--muted);
    line-height:1.7;
  }
  .check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-mid);flex:none;}
  .form-actions{margin-top:6px;}
  .form-actions .btn{width:100%;}
  .form-hint{margin-top:10px;font-size:13px;color:var(--muted);}

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  }