/* roulang page: index */
:root{
  --brand:#F2622E;
  --brand-deep:#C9481B;
  --brand-tint:#FDEDE6;
  --ink-green:#143A34;
  --mint:#2FA97C;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --card:#FFFFFF;
  --text:#1E2321;
  --text-2:#5A625E;
  --text-3:#8B938F;
  --line:#E6DDD2;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow:0 1px 2px rgba(20,58,52,.06),0 12px 28px -18px rgba(20,58,52,.28);
  --shadow-hover:0 18px 36px -20px rgba(20,58,52,.38);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;text-underline-offset:4px;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0 0 .6em;letter-spacing:-.01em;color:var(--text)}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1.1em;max-width:68ch}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
li{margin-bottom:.4em}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
:focus-visible{outline:3px solid var(--brand-tint);outline-offset:2px}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.section.dark{background:var(--ink-green);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:rgba(255,255,255,.78)}
.kicker{
  display:inline-block;font-size:13px;letter-spacing:.06em;
  color:var(--brand);font-weight:600;margin-bottom:12px;
}
.section.dark .kicker{color:#F8B79B}
.section-head{max-width:760px;margin-bottom:44px}
.section-head p{color:var(--text-2);margin-bottom:0}
.section.dark .section-head p{color:rgba(255,255,255,.72)}

/* 徽章 / 按钮 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-tint);color:var(--brand-deep);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.badge.mint{background:rgba(47,169,124,.1);color:#1E7E5C;border:1px solid rgba(47,169,124,.4)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(201,72,27,.9)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.section.dark .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.section.dark .btn-ghost:hover{color:#fff;border-color:#fff}
.link-inline{font-size:14px;font-weight:600}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,247,242,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.logo:hover{color:var(--text)}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav a{font-size:15px;color:var(--text-2);position:relative;padding:6px 0}
.nav a:hover{color:var(--text)}
.nav a.active{color:var(--text);font-weight:600}
.nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{padding:10px 20px;font-size:14px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:transparent;display:none;align-items:center;justify-content:center;
  cursor:pointer;transition:border-color var(--t),background var(--t);
}
.icon-btn:hover{border-color:var(--brand)}
.icon-btn svg{width:20px;height:20px;stroke:var(--text);stroke-width:1.5;fill:none}
.menu-btn{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,58,52,.35);
  opacity:0;pointer-events:none;transition:opacity var(--t);z-index:80;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;
  background:var(--bg);z-index:90;transform:translateX(100%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:24px 22px 28px;
  box-shadow:-16px 0 40px -24px rgba(20,58,52,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{background:none;border:0;font-size:24px;line-height:1;color:var(--text-2);cursor:pointer}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{
  font-size:17px;color:var(--text);line-height:44px;border-bottom:1px solid var(--line);
}
.drawer nav a.active{color:var(--brand);font-weight:600}
.drawer .btn{margin-top:auto;width:100%}

/* Hero */
.hero{
  position:relative;
  color:#fff;
  background:
    linear-gradient(100deg,rgba(20,58,52,.94) 0%,rgba(20,58,52,.82) 46%,rgba(20,58,52,.58) 100%),
    url('/assets/images/275720e27ed7c585.webp') center/cover no-repeat;
  padding:78px 0 64px;
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{color:#fff;max-width:24ch}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:#F8B79B;font-weight:600;margin-bottom:16px;
}
.hero-lead{color:rgba(255,255,255,.84);font-size:16px;max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.trust-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:rgba(255,255,255,.72);
  border-top:1px solid rgba(255,255,255,.16);padding-top:18px;max-width:620px;
}
.trust-strip span{display:inline-flex;align-items:center;gap:7px}
.trust-strip span+span{border-left:1px solid rgba(255,255,255,.2);padding-left:14px}
.ring-card{
  background:rgba(251,247,242,.07);
  border:1px solid rgba(255,255,255,.18);
  border-radius:22px;padding:28px 26px;
  box-shadow:0 24px 60px -34px rgba(0,0,0,.6);
}
.ring-wrap{display:flex;align-items:center;gap:22px}
.ring{
  width:132px;height:132px;border-radius:50%;flex:0 0 auto;
  background:conic-gradient(var(--brand) 0 0%,rgba(255,255,255,.16) 0% 100%);
  display:flex;align-items:center;justify-content:center;
  transition:background 400ms linear;
}
.ring-inner{
  width:104px;height:104px;border-radius:50%;background:#173F38;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;
}
.ring-time{font-family:var(--mono);font-size:19px;font-weight:700;color:#fff;letter-spacing:.02em}
.ring-label{font-size:11px;color:rgba(255,255,255,.66);line-height:1.4;margin-top:2px}
.ring-text{font-size:14px;color:rgba(255,255,255,.86);line-height:1.7}
.ring-text strong{display:block;color:#fff;font-size:16px;margin-bottom:4px}
.ring-points{list-style:none;margin:22px 0 0;padding:0}
.ring-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(255,255,255,.8);
  padding:10px 0;border-top:1px solid rgba(255,255,255,.14);margin:0;
}
.ring-points li b{color:#fff;font-weight:600}
.tick{color:#F8B79B;font-family:var(--mono);font-size:13px}

/* 下载 */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  display:flex;flex-direction:column;
}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.4)}
.dl-os{font-family:var(--mono);font-size:13px;color:var(--text-3);letter-spacing:.08em}
.dl-card h3{margin:8px 0 10px}
.dl-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:20px}
.dl-card .btn{margin-top:auto;width:100%}
.dl-note{font-size:13px;color:var(--text-3);margin-top:24px;max-width:70ch}

/* 状态条 */
.statbar{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}
.statbar-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{text-align:center;padding:0 12px}
.stat-item+.stat-item{border-left:1px solid var(--line)}
.stat-value{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--ink-green);line-height:1.3}
.stat-label{font-size:13px;color:var(--text-2)}

/* 功能分组 */
.feature-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px}
.feature-main{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px;box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.feature-main:hover{transform:translateY(-2px);border-color:rgba(242,98,46,.45);box-shadow:var(--shadow-hover)}
.feature-main h3{font-size:22px}
.feature-main>p{color:var(--text-2);font-size:15px}
.feature-list{list-style:none;padding:0;margin:22px 0 0}
.feature-list li{
  display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);margin:0;
}
.feature-ico{
  flex:0 0 36px;width:36px;height:36px;border-radius:12px;
  background:var(--brand-tint);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  font-family:var(--mono);
}
.feature-list b{display:block;font-size:15px;color:var(--text)}
.feature-list span{font-size:14px;color:var(--text-2);line-height:1.7}
.feature-side{display:grid;gap:24px}
.feature-small{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.feature-small:hover{transform:translateY(-2px);border-color:rgba(242,98,46,.45);box-shadow:var(--shadow-hover)}
.feature-small h3{font-size:18px;margin-bottom:8px}
.feature-small p{font-size:14px;color:var(--text-2);margin-bottom:12px}

/* 场景 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.4)}
.scene-fig{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.scene-fig img{width:100%;height:100%;object-fit:cover;border-radius:0}
.scene-body{padding:20px;display:flex;flex-direction:column;flex:1}
.scene-body h3{font-size:17px;margin-bottom:8px}
.scene-body p{font-size:14px;color:var(--text-2);margin-bottom:14px}
.scene-body .link-inline{margin-top:auto}

/* 演示 */
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.demo-visual{position:relative;min-height:420px}
.demo-shot{
  position:absolute;border-radius:var(--r-card);overflow:hidden;
  box-shadow:0 24px 50px -26px rgba(20,58,52,.5);
  border:1px solid var(--line);background:var(--card);
}
.demo-shot img{border-radius:0}
.shot-a{width:74%;top:0;left:0}
.shot-b{width:60%;bottom:0;right:0;transform:translateY(0)}
.demo-points{list-style:none;padding:0;margin:0}
.demo-points li{
  display:flex;gap:16px;padding:18px 0;margin:0;
  border-bottom:1px solid var(--line);
}
.demo-points li:first-child{padding-top:0}
.demo-num{
  flex:0 0 38px;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;font-weight:700;
}
.demo-points b{display:block;font-size:16px;margin-bottom:2px}
.demo-points span{font-size:14px;color:var(--text-2)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{padding-top:22px;border-top:1px solid var(--brand);position:relative}
.step-num{
  font-family:var(--mono);font-size:30px;font-weight:700;color:var(--brand);
  line-height:1.1;margin-bottom:10px;
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14px;color:var(--text-2);margin:0}

/* 安全 */
.safety-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:56px;align-items:start}
.safety-items{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.safety-item{padding:0 22px;border-left:1px solid rgba(255,255,255,.16)}
.safety-item:first-child{border-left:0;padding-left:0}
.safety-item h3{font-size:16px;margin-bottom:8px}
.safety-item p{font-size:14px;margin:0;color:rgba(255,255,255,.75)}

/* 类型墙 */
.type-wall{columns:3;column-gap:24px}
.type-card{
  break-inside:avoid;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;margin-bottom:24px;
  box-shadow:var(--shadow);transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.type-card:hover{transform:translateY(-3px);border-color:rgba(242,98,46,.45);box-shadow:var(--shadow-hover)}
.type-card h3{font-size:17px;margin-bottom:8px}
.type-card p{font-size:14px;color:var(--text-2);margin:0}
.type-card .badge{margin-bottom:12px}

/* 保障条 */
.promise{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0}
.promise-grid{display:grid;grid-template-columns:auto 1fr;gap:44px;align-items:center}
.promise-big{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--ink-green);line-height:1.2}
.promise-sub{font-size:13px;color:var(--text-3)}
.promise-items{display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.promise-items div{padding:0 22px;border-left:1px solid var(--line);font-size:14px;color:var(--text-2)}
.promise-items div:first-child{border-left:0;padding-left:0}
.promise-items b{display:block;color:var(--text);font-size:15px;margin-bottom:2px}

/* 展示位置 */
.place-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.place-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.place-card:hover{transform:translateY(-3px);border-color:rgba(242,98,46,.4);box-shadow:var(--shadow-hover)}
.place-card h3{font-size:18px;margin-bottom:10px}
.place-card ul{list-style:none;padding:0;margin:0}
.place-card li{
  font-size:14px;color:var(--text-2);padding:9px 0;margin:0;
  border-top:1px solid var(--line);display:flex;gap:8px;
}
.place-card li::before{content:"·";color:var(--brand);font-weight:700}
.place-note{font-size:13px;color:var(--text-3);margin-top:22px}

/* 区域 */
.region-tags{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.region-tags span{
  display:inline-flex;align-items:center;
  border:1px solid var(--line);border-radius:999px;
  padding:9px 18px;font-size:14px;color:var(--text-2);background:var(--card);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.region-tags span:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item[open]{border-color:rgba(242,98,46,.5);box-shadow:var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--brand);
  line-height:1;transition:transform var(--t);flex:0 0 auto;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−"}
.faq-answer{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq-answer p{margin:0;max-width:none}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow);color:inherit;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.4);color:inherit}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body .badge{align-self:flex-start;margin-bottom:10px}
.news-body h3{
  font-size:17px;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:16px;
}
.news-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:12px;
  font-family:var(--mono);
}
.news-meta .arrow{color:var(--brand);font-family:inherit;transition:transform var(--t)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.news-empty{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:36px;text-align:center;color:var(--text-2);font-size:15px;max-width:none;
}
.news-more{margin-top:32px;text-align:center}

/* 转化 */
.cta{background:var(--brand);color:#fff;padding:72px 0}
.cta h2{color:#fff;text-align:center;margin-bottom:10px}
.cta-sub{text-align:center;color:rgba(255,255,255,.88);max-width:620px;margin:0 auto 34px;font-size:15px}
.cta-form{
  display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:14px;
  max-width:960px;margin:0 auto;
}
.cta-form input{
  background:#fff;border:2px solid transparent;border-radius:var(--r-input);
  padding:14px 18px;color:var(--text);width:100%;
  transition:border-color var(--t),box-shadow var(--t);
}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{outline:none;border-color:var(--ink-green)}
.cta-form .btn{background:var(--ink-green);color:#fff}
.cta-form .btn:hover{background:#0C2C27;color:#fff}
.form-note{
  text-align:center;font-size:13px;color:rgba(255,255,255,.8);
  margin:16px auto 0;max-width:720px;
}

/* 关键词导览 */
.keybar{border-top:1px solid var(--line);background:var(--bg);padding:24px 0}
.keybar-inner{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:13px;color:var(--text-3)}
.keybar-inner a{color:var(--text-3)}
.keybar-inner a:hover{color:var(--brand)}
.keybar-sep{color:var(--line)}

/* 页脚 */
.site-footer{background:var(--ink-green);color:#fff;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:0}
.footer-col{padding:0 26px;border-left:1px solid rgba(255,255,255,.12)}
.footer-col:first-child{border-left:0;padding-left:0}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand:hover{color:#fff}
.footer-desc{font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;max-width:34ch}
.footer-keys{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px 14px;font-size:13px}
.footer-keys a{color:rgba(255,255,255,.7)}
.footer-keys a:hover{color:#fff}
.footer-col h4{
  font-size:14px;color:#fff;margin:0 0 14px;font-weight:600;letter-spacing:.04em;
}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin:0 0 10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-list a:hover{color:#fff}
.footer-bottom{
  margin-top:48px;padding-top:20px;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);
}

/* 响应式 */
@media (max-width:1179px){
  .section{padding:64px 0}
  .hero{padding:60px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{max-width:30ch}
  .feature-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(3,1fr)}
  .type-wall{columns:2}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .safety-grid{grid-template-columns:1fr;gap:32px}
  .demo-grid{grid-template-columns:1fr;gap:40px}
  .demo-visual{min-height:360px}
  .place-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0}
  .footer-col{padding:0 20px}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
  .cta-form{grid-template-columns:1fr 1fr}
  .promise-grid{grid-template-columns:1fr;gap:24px}
}
@media (max-width:899px){
  .nav{display:none}
  .menu-btn{display:inline-flex}
  .header-cta{display:none}
  .statbar-grid{grid-template-columns:repeat(2,1fr);gap:22px 0}
  .stat-item:nth-child(odd){border-left:0}
  .stat-item:nth-child(3),.stat-item:nth-child(4){padding-top:20px;border-top:1px solid var(--line)}
  .safety-items{grid-template-columns:1fr}
  .safety-item{border-left:0;padding:16px 0;border-top:1px solid rgba(255,255,255,.16)}
  .safety-item:first-child{padding-top:0;border-top:0}
  .promise-items{grid-template-columns:1fr;gap:0}
  .promise-items div{border-left:0;padding:12px 0;border-top:1px solid var(--line)}
  .promise-items div:first-child{border-top:0;padding-top:0}
  .demo-visual{min-height:320px}
}
@media (max-width:639px){
  body{font-size:15.5px}
  .section{padding:48px 0}
  .hero{padding:44px 0 40px}
  h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .trust-strip{gap:10px;font-size:12px}
  .trust-strip span+span{padding-left:10px}
  .ring-card{padding:22px 18px}
  .ring{width:112px;height:112px}
  .ring-inner{width:88px;height:88px}
  .ring-time{font-size:16px}
  .ring-wrap{gap:16px}
  .dl-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .type-wall{columns:1}
  .steps{grid-template-columns:1fr;gap:0}
  .step{border-top:0;border-left:1px solid var(--brand);padding:0 0 24px 20px}
  .step:last-child{padding-bottom:0}
  .step-num{font-size:24px;margin-bottom:6px}
  .place-grid{grid-template-columns:1fr}
  .cta-form{grid-template-columns:1fr}
  .cta-form .btn{width:100%}
  .demo-visual{min-height:230px}
  .demo-grid{gap:28px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col{border-left:0;padding:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px}
  .footer-col:first-child{border-top:0;padding-top:0}
  .footer-bottom{margin-top:32px}
  .container{padding:0 18px}
  .header-inner{height:60px;gap:16px}
  .btn{padding:13px 22px}
}

/* roulang page: article */
:root{
  --brand:#F2622E;
  --brand-deep:#C9481B;
  --brand-tint:#FDEDE6;
  --ink-green:#143A34;
  --mint:#2FA97C;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --card:#FFFFFF;
  --text:#1E2321;
  --text-2:#5A625E;
  --text-3:#8B938F;
  --line:#E6DDD2;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow:0 1px 2px rgba(20,58,52,.06),0 12px 28px -18px rgba(20,58,52,.28);
  --shadow-hover:0 18px 36px -20px rgba(20,58,52,.38);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;text-underline-offset:4px;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.35;font-weight:700}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em;padding-left:1.25em}
button{font-family:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.section.dark{background:var(--ink-green);color:#fff}
.section.dark h2,.section.dark h3{color:#fff}
.section.dark p{color:rgba(255,255,255,.78)}
.kicker{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--brand);margin-bottom:10px}
.section.dark .kicker{color:#F8B79B}
.section-head{max-width:720px;margin-bottom:40px}
.section-head p{color:var(--text-2);margin-bottom:0}
.section.dark .section-head p{color:rgba(255,255,255,.72)}
/* 徽章 / 按钮 */
.badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-tint);color:var(--brand-deep);
  font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px;
}
.badge.mint{background:rgba(47,169,124,.1);color:#1E7E5C;border:1px solid rgba(47,169,124,.4)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(201,72,27,.9)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid var(--brand-tint);outline-offset:2px}
/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(251,247,242,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.logo:hover{color:var(--text)}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav a{font-size:15px;color:var(--text-2);position:relative;padding:6px 0}
.nav a:hover{color:var(--text)}
.nav a.active{color:var(--text);font-weight:600}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{padding:10px 20px;font-size:14px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;
  display:none;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--t),background var(--t);
}
.icon-btn:hover{border-color:var(--brand)}
.icon-btn svg{width:20px;height:20px;stroke:var(--text);stroke-width:1.5;fill:none}
.drawer-mask{position:fixed;inset:0;background:rgba(20,58,52,.35);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:80}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:var(--bg);z-index:90;
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:24px 22px 28px;box-shadow:-16px 0 40px -24px rgba(20,58,52,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{background:none;border:0;font-size:24px;line-height:1;color:var(--text-2);cursor:pointer}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{font-size:17px;color:var(--text);line-height:44px;border-bottom:1px solid var(--line)}
.drawer nav a.active{color:var(--brand);font-weight:600}
.drawer .btn{margin-top:auto;width:100%}
/* 文章页头部 */
.article-top{padding:38px 0 10px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:26px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line)}
.crumbs .cur{color:var(--text-2);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:820px}
.article-head h1{
  font-size:clamp(26px,3.4vw,36px);line-height:1.4;letter-spacing:-.01em;
  margin:16px 0 18px;max-width:26ch;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.live-dot{width:6px;height:6px;border-radius:50%;background:var(--mint);display:inline-block}
.meta-sep{color:var(--line)}
/* 正文 */
.article-main{padding:34px 0 8px}
.article-body{max-width:760px;margin:0 auto;font-size:16px;line-height:1.85;color:var(--text)}
.article-body h2{font-size:clamp(22px,2.6vw,27px);margin-top:2em;margin-bottom:.6em;line-height:1.4}
.article-body h2::after{content:"";display:block;width:36px;height:3px;border-radius:3px;background:var(--brand);margin-top:12px}
.article-body h3{font-size:20px;margin-top:1.6em;margin-bottom:.5em}
.article-body h4{font-size:17px;margin-top:1.3em}
.article-body p{color:var(--text-2);margin-bottom:1.1em}
.article-body strong{color:var(--text);font-weight:600}
.article-body ul,.article-body ol{padding-left:1.25em;color:var(--text-2)}
.article-body li{margin-bottom:.55em}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:600}
.article-body blockquote{
  margin:1.8em 0;padding:16px 22px;border-left:3px solid var(--brand);
  background:var(--brand-tint);border-radius:0 12px 12px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:1.4em 0 .8em;border-radius:var(--r-img);box-shadow:var(--shadow)}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;line-height:1.7}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-color:rgba(242,98,46,.42)}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-body th{background:var(--bg-alt);text-align:left;font-weight:600;color:var(--text)}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;color:var(--text-2)}
.article-body code{background:var(--bg-alt);padding:2px 6px;border-radius:6px;font-family:var(--mono);font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
/* 空态 */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:40px 28px;text-align:center;box-shadow:var(--shadow);
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state h2::after{display:none}
.empty-state p{color:var(--text-2);margin-bottom:22px}
/* 要点卡 */
.tip-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--shadow);margin-top:44px;
}
.tip-card h2{font-size:21px;margin-bottom:16px;line-height:1.5}
.tip-list{list-style:none;margin:0;padding:0}
.tip-list li{
  position:relative;padding:14px 0 14px 26px;border-top:1px solid var(--line);
  font-size:15px;color:var(--text-2);line-height:1.8;
}
.tip-list li:first-child{border-top:0;padding-top:0}
.tip-list li::before{
  content:"";position:absolute;left:0;top:24px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);opacity:.85;
}
.tip-list li:first-child::before{top:10px}
.tip-list strong{color:var(--text)}
/* 标签行 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px}
.tag-label{font-size:13px;color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--card);border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);
}
.tag:hover{color:#fff;background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
/* 步骤 */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.step-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--shadow);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.35)}
.step-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);line-height:1;margin-bottom:14px}
.step-item h3{font-size:17px;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:0}
/* 相关卡片 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);color:var(--text);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.35);color:var(--text)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rel-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.rel-body h3{font-size:17px;line-height:1.5;margin:10px 0 8px}
.rel-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:14px}
.rel-more{margin-top:auto;font-size:13px;font-weight:600;color:var(--brand)}
/* 下载条 */
.dl-band{
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:22px;padding:40px 36px;
}
.dl-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}
.dl-band p{font-size:15px;margin-bottom:0}
.dl-actions{display:grid;gap:12px}
.dl-btn{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);color:#fff;
  border-radius:999px;padding:13px 22px;font-size:15px;font-weight:600;
  transition:background var(--t),border-color var(--t),transform var(--t),color var(--t);
}
.dl-btn span.arrow{font-family:var(--mono);font-size:13px;opacity:.7}
.dl-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px)}
/* 返回与发布 */
.back-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.back-row .back-note{font-size:14px;color:var(--text-2);max-width:52ch;margin:0}
.back-actions{display:flex;flex-wrap:wrap;gap:12px}
/* 页脚 */
.site-footer{background:var(--ink-green);color:#fff;padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand:hover{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);max-width:34ch;margin-bottom:18px}
.footer-keys{display:flex;flex-wrap:wrap;gap:10px}
.footer-keys a{font-size:13px;color:rgba(255,255,255,.7);border-bottom:1px solid rgba(255,255,255,.2);padding-bottom:2px}
.footer-keys a:hover{color:#fff;border-color:var(--brand)}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-list{list-style:none;margin:0;padding:0}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-list a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.55);
}
/* 响应式 */
@media (max-width:1100px){
  .rel-grid,.step-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-col+.footer-col{border-left:0;padding-left:0}
  .dl-band{grid-template-columns:1fr;gap:26px;padding:34px 28px}
}
@media (max-width:900px){
  .section{padding:64px 0}
  .nav{display:none}
  .menu-btn{display:inline-flex}
  .header-inner{height:64px;gap:16px}
  .article-head h1{max-width:none}
  .dl-actions{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .section{padding:48px 0}
  .header-cta{display:none}
  .article-top{padding:26px 0 6px}
  .article-head h1{font-size:26px}
  .article-body{font-size:15.5px}
  .rel-grid,.step-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .tip-card{padding:24px 20px}
  .rel-body{padding:18px 18px 20px}
  .btn{width:100%}
  .back-actions{width:100%}
  .dl-band{padding:26px 20px}
  .dl-btn{font-size:14px;padding:12px 18px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:380px){
  .logo{font-size:16px}
}

/* roulang page: category1 */
:root{
  --brand:#F2622E;
  --brand-deep:#C9481B;
  --brand-tint:#FDEDE6;
  --ink-green:#143A34;
  --mint:#2FA97C;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --card:#FFFFFF;
  --text:#1E2321;
  --text-2:#5A625E;
  --text-3:#8B938F;
  --line:#E6DDD2;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow:0 1px 2px rgba(20,58,52,.06),0 12px 28px -18px rgba(20,58,52,.28);
  --shadow-hover:0 18px 36px -20px rgba(20,58,52,.38);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --t:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin-bottom:1.1em}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;text-underline-offset:4px;transition:color var(--t)}
a:hover{color:var(--brand-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--brand-tint);outline-offset:2px}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.kicker{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.06em;margin-bottom:10px}
.section-head{max-width:760px;margin-bottom:40px}
.section-head p{color:var(--text-2);max-width:68ch;margin-bottom:0}
.section-head h2{margin-bottom:12px}
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--brand-tint);color:var(--brand-deep);font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px}
.badge.mint{background:rgba(47,169,124,.1);color:#1E7E5C;border:1px solid rgba(47,169,124,.4)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(201,72,27,.9)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-deep)}
.btn-light:hover{background:#FFF3EC;color:var(--brand-deep);transform:translateY(-2px)}
/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(251,247,242,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.logo{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.logo:hover{color:var(--text)}
.logo-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block}
.nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav a{font-size:15px;color:var(--text-2);position:relative;padding:6px 0}
.nav a:hover{color:var(--text)}
.nav a.active{color:var(--text);font-weight:600}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{padding:10px 20px;font-size:14px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;display:none;align-items:center;justify-content:center;cursor:pointer;transition:border-color var(--t),background var(--t)}
.icon-btn:hover{border-color:var(--brand)}
.icon-btn svg{width:20px;height:20px;stroke:var(--text);stroke-width:1.5;fill:none}
.menu-btn{display:none}
.drawer-mask{position:fixed;inset:0;background:rgba(20,58,52,.35);opacity:0;pointer-events:none;transition:opacity var(--t);z-index:80}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:var(--bg);z-index:90;
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:24px 22px 28px;box-shadow:-16px 0 40px -24px rgba(20,58,52,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{background:none;border:0;font-size:24px;line-height:1;color:var(--text-2);cursor:pointer}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{font-size:17px;color:var(--text);line-height:44px;border-bottom:1px solid var(--line)}
.drawer nav a.active{color:var(--brand);font-weight:600}
.drawer .btn{margin-top:auto;width:100%}
/* 分类头部条 */
.cat-head{padding:56px 0 0;background:var(--bg);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.cat-head-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:44px;align-items:start}
.cat-lead{color:var(--text-2);max-width:52ch;margin-top:16px;margin-bottom:0;font-size:15px}
.cat-meta{border-left:1px solid var(--line);padding-left:26px}
.cat-meta li{padding:12px 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:2px}
.cat-meta li:last-child{border-bottom:0;padding-bottom:0}
.cat-meta strong{font-size:16px;color:var(--text);font-weight:600}
.cat-meta span{font-size:13px;color:var(--text-3);line-height:1.6}
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:24px 0;margin-top:38px;border-top:1px solid var(--line)}
.chip{display:inline-flex;align-items:center;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--text-2);font-size:14px;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t)}
.chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff}
.chip.active:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
.filter-cta{margin-left:auto;padding:10px 22px;font-size:14px}
/* 主体列表 */
.topic-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:start}
.topic-list{display:grid;gap:16px}
.topic-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--shadow);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.42)}
.topic-card h3{margin-bottom:8px}
.topic-card p{color:var(--text-2);font-size:15px;margin-bottom:10px;max-width:68ch}
.topic-card p:last-child{margin-bottom:0}
.topic-idx{font-family:var(--mono);font-size:13px;color:var(--brand);letter-spacing:.08em;display:block;margin-bottom:6px}
.topic-aside{position:sticky;top:96px;display:grid;gap:20px}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow)}
.aside-card h3{font-size:17px;margin-bottom:10px}
.aside-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:16px}
.aside-card .btn{width:100%}
.tag-flow{display:flex;flex-wrap:wrap;gap:10px}
.tag-flow a{display:inline-flex;padding:6px 14px;border-radius:999px;background:var(--bg-alt);color:var(--text-2);font-size:13px;transition:background var(--t),color var(--t)}
.tag-flow a:hover{background:var(--brand-tint);color:var(--brand-deep)}
/* 场景 */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scene-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.42)}
.scene-thumb{aspect-ratio:16/10;overflow:hidden}
.scene-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .45s cubic-bezier(.2,.7,.3,1)}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.scene-body h3{font-size:17px}
.scene-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.scene-link{margin-top:auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.scene-link::after{content:"→";transition:transform var(--t)}
.scene-link:hover::after{transform:translateX(3px)}
/* 区域索引 */
.area-tags{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.area-tags span{display:inline-flex;padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--text-2);transition:border-color var(--t),color var(--t),background var(--t)}
.area-tags span:nth-child(3n+1){background:var(--brand-tint);border-color:rgba(242,98,46,.28);color:var(--brand-deep)}
.area-note{font-size:13px;color:var(--text-3);margin-top:18px;margin-bottom:0}
/* 三步 */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;max-width:940px}
.step{border-top:2px solid var(--brand);padding-top:20px}
.step-num{font-family:var(--mono);font-size:13px;color:var(--brand);letter-spacing:.14em}
.step h3{margin:10px 0 8px;font-size:19px}
.step p{font-size:15px;color:var(--text-2);margin:0;max-width:34ch}
/* 规则 */
.rule-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:6px 28px;box-shadow:var(--shadow)}
.rule-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.rule-list li:last-child{border-bottom:0}
.rule-idx{font-family:var(--mono);font-size:13px;color:var(--brand);padding-top:3px;flex:0 0 auto}
.rule-list strong{display:block;font-size:15px;margin-bottom:2px}
.rule-list p{font-size:14px;color:var(--text-2);margin:0;max-width:66ch}
.placement-box{margin-top:28px;background:var(--brand-tint);border-radius:var(--r-card);padding:24px 26px}
.placement-box h3{font-size:16px;margin-bottom:8px;color:var(--brand-deep)}
.placement-box p{font-size:14px;color:var(--text-2);margin:0;max-width:70ch}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 20px;transition:border-color var(--t),box-shadow var(--t)}
.faq-item[open]{border-color:rgba(242,98,46,.45);box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 40px 18px 0;position:relative;font-weight:600;font-size:16px;transition:color var(--t)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--brand);line-height:1;transition:transform var(--t)}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-body{padding:0 0 20px;color:var(--text-2);font-size:15px;max-width:66ch}
.faq-body p:last-child{margin-bottom:0}
/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.42)}
.news-thumb{aspect-ratio:16/10;overflow:hidden;display:block}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-body h3{font-size:17px;line-height:1.55}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--brand)}
.news-summary{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--text-3)}
.news-empty{max-width:720px;background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);padding:32px;text-align:center}
.news-empty p{color:var(--text-2);font-size:15px;margin-bottom:18px}
.news-more{margin-top:32px}
/* 下载 */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(242,98,46,.42)}
.dl-icon{width:44px;height:44px;border-radius:14px;background:var(--brand-tint);display:flex;align-items:center;justify-content:center}
.dl-icon svg{width:22px;height:22px;stroke:var(--brand-deep);stroke-width:1.6;fill:none}
.dl-card h3{font-size:17px}
.dl-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.dl-card .btn{margin-top:8px}
/* CTA */
.cta{background:var(--brand);color:#fff;padding:76px 0}
.cta h2{color:#fff;max-width:20ch}
.cta .cta-sub{color:rgba(255,255,255,.92);max-width:56ch;margin-top:14px}
.cta-form{display:grid;grid-template-columns:repeat(3,1fr) auto;gap:14px;margin-top:28px}
.cta-form input{border:1px solid rgba(255,255,255,.65);background:#fff;color:var(--text);border-radius:var(--r-input);padding:14px 18px;outline:none;transition:box-shadow var(--t)}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{box-shadow:0 0 0 3px rgba(255,255,255,.55)}
.cta-note{font-size:13px;color:rgba(255,255,255,.85);margin:16px 0 0}
/* footer */
.site-footer{background:var(--ink-green);color:#fff;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-col{padding-right:24px;border-right:1px solid rgba(255,255,255,.12)}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brand{display:inline-flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-brand:hover{color:#fff}
.footer-desc{font-size:13px;line-height:1.9;color:rgba(255,255,255,.72);max-width:34ch}
.footer-keys{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:16px}
.footer-keys a{font-size:13px;color:rgba(255,255,255,.8)}
.footer-keys a:hover{color:#F8B79B}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-list li{margin-bottom:10px}
.footer-list a{font-size:14px;color:rgba(255,255,255,.74)}
.footer-list a:hover{color:#F8B79B}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.55)}
/* 响应式 */
@media (max-width:1024px){
  .section{padding:64px 0}
  .cat-head-grid{grid-template-columns:1fr;gap:24px}
  .cat-meta{border-left:0;padding-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);gap:0 18px;padding-top:6px}
  .cat-meta li{border-bottom:0;padding:14px 0}
  .topic-layout{grid-template-columns:1fr;gap:32px}
  .topic-aside{position:static;grid-template-columns:1fr 1fr}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:1fr}
  .step-grid{grid-template-columns:1fr;gap:24px;max-width:none}
  .step p{max-width:none}
  .cta-form{grid-template-columns:1fr 1fr}
  .cta-form .btn{grid-column:1 / -1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col{padding-right:0;border-right:0}
}
@media (max-width:899px){
  .nav{display:none}
  .menu-btn{display:inline-flex}
  .header-cta{display:none}
  .header-inner{height:60px;gap:12px}
  .cat-head{padding:36px 0 0}
}
@media (max-width:767px){
  .cta-form{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .topic-aside{grid-template-columns:1fr}
  .cat-meta{grid-template-columns:1fr}
  .filter-cta{margin-left:0;width:100%}
  .cta{padding:56px 0}
}
@media (max-width:640px){
  .section{padding:48px 0}
  .topic-card{padding:20px}
  .rule-card{padding:4px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-keys{gap:6px 12px}
  .footer-bottom{flex-direction:column}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .chip{font-size:13px;padding:7px 14px}
  .area-tags span{padding:7px 14px;font-size:13px}
  .news-body,.scene-body{padding:18px}
}