/* roulang page: index */
:root{
  --deep:#0E3B2E;
  --green:#1F6F5C;
  --green-l:#2E8B72;
  --coral:#E4572E;
  --amber:#B7791F;
  --amber-bg:#FDF6E7;
  --ink:#14171A;
  --body:#2C3336;
  --muted:#5C6A66;
  --line:#E2E6E2;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --mint:#EDF5F1;
  --grad:linear-gradient(120deg,#0E3B2E 0%,#1F6F5C 58%,#2E8B72 100%);
  --grad-dark:linear-gradient(120deg,#0A2C22 0%,#175647 58%,#236A58 100%);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 12px 32px rgba(14,59,46,.08);
  --sh-h:0 18px 44px rgba(14,59,46,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--green);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--coral);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.sec-white{background:#fff;}
.sec-mint{background:var(--mint);}
.sec-bg{background:var(--bg);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:16px;}
.sec-head p{color:var(--muted);font-size:16px;line-height:1.85;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--green);
  font-weight:600;text-transform:uppercase;margin-bottom:18px;
  padding:6px 14px;border-radius:999px;background:var(--mint);
}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--mint);color:var(--deep);font-size:12px;letter-spacing:.06em;font-weight:600;
}
.chip-coral{background:var(--coral);color:#fff;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(14,59,46,.18);}
.btn-primary:hover{background:var(--grad-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-h);}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent;}
.btn-ghost:hover{background:var(--mint);color:var(--green);}
.btn-on-dark{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06);}
.btn-on-dark:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{min-height:42px;padding:0 16px;font-size:14px;}
.btn-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(14,59,46,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.2;color:var(--deep);}
.brand:hover{color:var(--deep);}
.brand-line1{font-size:22px;font-weight:600;letter-spacing:.02em;}
.brand-line2{font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:5px;}
.nav-main{display:flex;align-items:center;gap:32px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--body);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--green);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--deep);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:48px;height:48px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--deep);transition:.25s var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* Hero */
.hero{
  background:var(--grad);color:#fff;position:relative;overflow:hidden;
  padding:80px 0 88px;
}
.hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.14),rgba(255,255,255,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center;position:relative;z-index:1;}
.hero .eyebrow{background:rgba(255,255,255,.14);color:#EAF5F0;}
.hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);line-height:1.25;margin-bottom:20px;
  letter-spacing:-.01em;
}
.hero-lede{font-size:19px;font-weight:600;color:#EAF5F0;margin-bottom:16px;line-height:1.6;}
.hero-text{font-size:16px;line-height:1.9;color:rgba(255,255,255,.82);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 24px;}
.hero-platforms{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.pf-badge{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  font-size:13px;color:#F2FAF6;letter-spacing:.04em;
}
.pf-badge i{width:6px;height:6px;border-radius:50%;background:#FFB59E;display:block;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags span{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  font-size:13px;color:#EAF5F0;
}
.hero-visual{position:relative;}
.panel-card{
  background:#fff;border-radius:var(--r-lg);padding:26px 24px;color:var(--body);
  box-shadow:0 24px 56px rgba(6,32,24,.28);
}
.panel-head{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.08em;color:var(--muted);margin-bottom:20px;}
.panel-head .dot{width:8px;height:8px;border-radius:50%;background:var(--coral);display:block;}
.panel-metrics{display:grid;gap:12px;margin-bottom:22px;}
.pm-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border-radius:var(--r-md);background:var(--mint);
}
.pm-row .k{font-size:14px;color:var(--deep);font-weight:600;}
.pm-row .v{font-size:14px;color:var(--deep);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.panel-flow{display:grid;gap:0;}
.pf-step{display:flex;align-items:flex-start;gap:12px;position:relative;padding-bottom:16px;}
.pf-step:last-child{padding-bottom:0;}
.pf-step::before{
  content:"";position:absolute;left:6px;top:16px;bottom:0;width:1px;background:var(--line);
}
.pf-step:last-child::before{display:none;}
.pf-step em{
  width:13px;height:13px;border-radius:50%;background:var(--coral);flex:0 0 13px;margin-top:5px;
  box-shadow:0 0 0 4px rgba(228,87,46,.14);
}
.pf-step span{font-size:13.5px;color:var(--body);line-height:1.6;}
.pf-step span b{color:var(--deep);font-weight:600;}
.badge-coral{
  position:absolute;right:-6px;bottom:-16px;background:var(--coral);color:#fff;
  font-size:12px;letter-spacing:.06em;padding:9px 16px;border-radius:999px;font-weight:600;
  box-shadow:0 12px 26px rgba(228,87,46,.32);white-space:nowrap;
}

/* 指标看板 */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.metric-card{
  min-width:0;background:#fff;border-radius:var(--r-lg);padding:26px 24px;border:1px solid var(--line);
  position:relative;overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.metric-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--coral);}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.metric-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.metric-key{font-size:15px;font-weight:600;color:var(--deep);}
.metric-tag{font-size:12px;color:var(--muted);background:var(--mint);border-radius:999px;padding:3px 10px;white-space:nowrap;}
.metric-value{
  font-size:28px;font-weight:700;color:var(--ink);letter-spacing:.01em;line-height:1.2;
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.metric-note{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:14px;}
.metric-foot{font-size:12px;color:var(--amber);letter-spacing:.04em;display:inline-block;padding:3px 10px;border-radius:999px;background:var(--amber-bg);}

/* 服务矩阵 */
.svc-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px;}
.svc-card{
  grid-column:span 3;min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px;display:flex;flex-direction:column;gap:12px;position:relative;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.svc-card.wide{grid-column:span 6;flex-direction:row;align-items:center;gap:20px;}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(228,87,46,.45);}
.svc-icon{
  width:42px;height:42px;border-radius:12px;background:var(--mint);display:flex;align-items:center;justify-content:center;
  color:var(--green);font-size:16px;font-weight:700;flex:0 0 42px;
}
.svc-body{min-width:0;flex:1;}
.svc-card h3{font-size:19px;margin-bottom:8px;line-height:1.45;}
.svc-card p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.svc-arrow{color:var(--coral);font-size:14px;font-weight:600;letter-spacing:.04em;}

/* 专题入口 */
.topic-card{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,4fr) auto;gap:28px;align-items:center;
  background:var(--mint);border:1px solid #D8E8E1;border-radius:var(--r-lg);padding:34px 32px;
  color:var(--body);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(31,111,92,.4);color:var(--body);}
.topic-main h3{font-size:24px;margin:14px 0 10px;}
.topic-main p{font-size:15px;color:var(--muted);line-height:1.8;}
.topic-list li{
  font-size:14.5px;color:var(--body);padding:9px 0 9px 20px;border-bottom:1px solid #D8E8E1;position:relative;
}
.topic-list li:last-child{border-bottom:none;}
.topic-list li::before{
  content:"";position:absolute;left:0;top:19px;width:7px;height:7px;border-radius:50%;background:var(--coral);
}
.topic-arrow{
  font-size:14px;font-weight:600;color:var(--deep);background:#fff;border-radius:999px;
  padding:12px 22px;white-space:nowrap;border:1px solid #D8E8E1;
}

/* 对比 */
.compare-wrap{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;position:relative;}
.compare-card{
  min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.compare-card.hl{background:var(--mint);border-color:#D8E8E1;}
.compare-card h3{font-size:20px;margin-bottom:6px;}
.compare-sub{font-size:13px;color:var(--muted);letter-spacing:.04em;margin-bottom:18px;}
.compare-item{padding:14px 0;border-top:1px solid var(--line);min-width:0;}
.compare-item:first-of-type{border-top:none;}
.compare-item dt{font-size:14px;font-weight:600;color:var(--deep);margin-bottom:4px;}
.compare-item dd{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75;}
.compare-mid{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--deep);color:#fff;font-size:12px;letter-spacing:.1em;padding:6px 14px;border-radius:999px;
}

/* 里程碑 */
.mile-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative;}
.mile-card{
  min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;
  position:relative;transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.mile-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.mile-num{
  font-size:34px;font-weight:700;color:var(--coral);font-variant-numeric:tabular-nums;line-height:1;
  margin-bottom:14px;
}
.mile-card h3{font-size:18px;margin-bottom:12px;}
.mile-card li{
  font-size:14px;color:var(--muted);line-height:1.7;padding-left:16px;position:relative;margin-bottom:8px;
}
.mile-card li::before{
  content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--green-l);
}
.mile-card li:last-child{margin-bottom:0;}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:26px;align-items:start;}
.news-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.news-feature a{display:block;color:var(--body);}
.news-feature h3{font-size:23px;line-height:1.45;margin:14px 0 12px;}
.news-feature p{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:16px;}
.news-meta{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;font-variant-numeric:tabular-nums;}
.news-list{display:grid;gap:14px;}
.news-list li{min-width:0;}
.news-list a{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;
  color:var(--body);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.news-list a:hover{transform:translateY(-2px);box-shadow:var(--sh);border-color:rgba(31,111,92,.4);color:var(--body);}
.news-list-title{font-size:15px;font-weight:600;color:var(--deep);line-height:1.6;min-width:0;}
.news-list-meta{font-size:12.5px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;padding-top:3px;}
.news-more{margin-top:28px;}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--deep);
  border-bottom:2px solid var(--coral);padding-bottom:4px;
}
.link-more:hover{color:var(--coral);}
.empty-card{
  background:#fff;border:1px dashed #C9DCD4;border-radius:var(--r-lg);padding:40px 24px;text-align:center;
  color:var(--muted);font-size:15px;
}

/* 平台保障 */
.assure-card{
  background:var(--grad);border-radius:var(--r-lg);padding:48px 44px;color:#fff;
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;
}
.assure-left h2{color:#fff;font-size:clamp(24px,2.6vw,32px);margin-bottom:16px;}
.assure-left p{color:rgba(255,255,255,.82);font-size:15.5px;line-height:1.85;}
.assure-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;}
.assure-item{
  min-width:0;padding:22px 24px;border-top:1px solid rgba(255,255,255,.2);border-left:1px solid rgba(255,255,255,.2);
}
.assure-item:nth-child(1),.assure-item:nth-child(2){border-top:none;}
.assure-item:nth-child(odd){border-left:none;}
.assure-item h3{color:#fff;font-size:17px;margin-bottom:8px;}
.assure-item p{color:rgba(255,255,255,.78);font-size:14px;line-height:1.8;}

/* 下载 */
.download-card{
  background:var(--grad);border-radius:var(--r-lg);padding:56px 40px;color:#fff;text-align:center;
}
.download-card h2{color:#fff;font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
.download-card > p{color:rgba(255,255,255,.84);font-size:15.5px;max-width:720px;margin:0 auto 34px;}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;text-align:left;}
.dl-card{
  min-width:0;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.26);border-radius:var(--r-md);
  padding:24px 22px;display:flex;flex-direction:column;gap:10px;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.dl-card:hover{background:rgba(255,255,255,.18);transform:translateY(-3px);}
.dl-name{font-size:18px;font-weight:700;color:#fff;}
.dl-desc{font-size:13.5px;color:rgba(255,255,255,.78);line-height:1.7;min-height:44px;}
.dl-format{font-size:12px;color:#FFD9CC;letter-spacing:.06em;font-variant-numeric:tabular-nums;}
.dl-btn{
  display:inline-flex;align-items:center;justify-content:center;min-height:46px;border-radius:var(--r-sm);
  background:#fff;color:var(--deep);font-size:15px;font-weight:700;margin-top:6px;
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.dl-btn:hover{background:#FFE6DC;color:var(--deep);transform:translateY(-2px);}
.dl-note{margin-top:26px;font-size:12.5px;color:rgba(255,255,255,.68);letter-spacing:.03em;}

/* 快速解答 */
.qa-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.qa-card{
  min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px 22px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--sh);}
.qa-card h3{font-size:16px;margin-bottom:10px;line-height:1.5;}
.qa-card p{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* 风险与误区 */
.amber-bar{
  background:var(--amber-bg);border-left:4px solid var(--amber);border-radius:var(--r-sm);
  padding:18px 22px;color:var(--amber);font-size:15px;line-height:1.75;margin-bottom:34px;
}
.myth-list{display:grid;gap:16px;}
.myth-row{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px 26px;
}
.myth-col{min-width:0;}
.myth-col dt{font-size:13px;letter-spacing:.08em;margin-bottom:8px;}
.myth-wrong dt{color:var(--amber);}
.myth-right dt{color:var(--green);}
.myth-col dd{margin:0;font-size:15px;color:var(--body);line-height:1.8;}
.myth-right{border-left:1px solid var(--line);padding-left:20px;}

/* 新手三步 */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.step-card{
  min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 26px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);}
.step-num{
  font-size:44px;font-weight:700;color:var(--coral);line-height:1;font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* FAQ */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:first-child{border-top:none;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:none;border:none;padding:22px 26px;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--deep);line-height:1.6;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.faq-q:hover{background:var(--mint);}
.faq-item.is-open .faq-q{background:var(--mint);color:var(--deep);}
.faq-arw{
  flex:0 0 14px;width:14px;height:14px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .25s var(--ease),border-color .25s var(--ease);
  margin-top:-4px;
}
.faq-item.is-open .faq-arw{transform:rotate(225deg);border-color:var(--coral);margin-top:4px;}
.faq-a{display:none;padding:0 26px 24px;font-size:15px;color:var(--muted);line-height:1.9;}
.faq-item.is-open .faq-a{display:block;}

/* 咨询表单 */
.consult-card{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;
}
.consult-left h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:16px;}
.consult-left p{font-size:15.5px;color:var(--muted);line-height:1.85;margin-bottom:22px;}
.consult-points li{
  font-size:15px;color:var(--body);padding:10px 0 10px 28px;position:relative;border-bottom:1px solid var(--line);
}
.consult-points li:last-child{border-bottom:none;}
.consult-points li::before{
  content:"✓";position:absolute;left:0;top:10px;color:var(--coral);font-weight:700;
}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px 30px;box-shadow:var(--sh);}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;min-width:0;}
.field label{font-size:14px;color:var(--deep);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;font-size:15px;color:var(--body);background:#fff;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
  font-family:inherit;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--green);box-shadow:0 0 0 3px rgba(31,111,92,.12);outline:none;
}
.field.has-error input,.field.has-error select{border-color:var(--coral);}
.err-msg{display:none;font-size:13px;color:var(--coral);}
.field.has-error .err-msg{display:block;}
.form-submit{width:100%;margin-top:6px;}
.form-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.7;}
.form-status{
  display:none;margin-top:16px;font-size:14px;padding:12px 16px;border-radius:var(--r-sm);
  background:var(--mint);color:var(--deep);
}
.form-status.show{display:block;}

/* 页脚 */
.site-footer{background:var(--deep);color:rgba(255,255,255,.74);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.6fr) minmax(0,3fr);gap:36px;}
.footer-brand .brand-line1{color:#fff;}
.footer-brand .brand-line2{color:rgba(255,255,255,.55);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.04em;}
.footer-col li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.74);font-size:14px;}
.footer-col a:hover{color:#FFB59E;}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom span{line-height:1.7;}

@media (max-width:1024px){
  .section{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .svc-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .svc-card,.svc-card.wide{grid-column:auto;flex-direction:column;align-items:flex-start;}
  .topic-card{grid-template-columns:1fr;gap:20px;}
  .topic-arrow{justify-self:start;}
  .mile-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:1fr;}
  .assure-card{grid-template-columns:1fr;padding:38px 30px;}
  .dl-grid{grid-template-columns:1fr;}
  .qa-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-grid{grid-template-columns:1fr;}
  .consult-card{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-main{
    position:fixed;left:0;right:0;top:76px;bottom:0;background:#fff;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:12px 20px 40px;overflow-y:auto;display:none;
    border-top:1px solid var(--line);
  }
  body.nav-open .nav-main{display:flex;}
  body.nav-open{overflow:hidden;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{
    display:flex;align-items:center;min-height:56px;font-size:16px;border-bottom:1px solid var(--line);
    padding-left:0;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{
    border-left:3px solid var(--coral);padding-left:14px;background:var(--mint);
  }
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:24px;}
  .nav-actions .btn{width:100%;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding:0 20px;}
  .hero{padding:52px 0 60px;}
  .hero h1{font-size:clamp(28px,7vw,34px);}
  .metric-grid{grid-template-columns:1fr;}
  .svc-grid{grid-template-columns:1fr;}
  .compare-wrap{grid-template-columns:1fr;}
  .compare-mid{position:static;transform:none;display:inline-block;margin:0 0 18px;}
  .mile-grid{grid-template-columns:1fr;}
  .qa-grid{grid-template-columns:1fr;}
  .assure-grid{grid-template-columns:1fr;}
  .assure-item{border-left:none;padding:18px 0;}
  .download-card{padding:40px 24px;}
  .dl-desc{min-height:0;}
  .myth-row{grid-template-columns:1fr;gap:16px;}
  .myth-right{border-left:none;border-top:1px solid var(--line);padding-left:0;padding-top:16px;}
  .form-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a{padding:0 18px 20px;}
  .news-feature{padding:24px 20px;}
  .news-feature h3{font-size:20px;}
  .badge-coral{right:8px;bottom:-14px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-tags span{font-size:12px;padding:0 12px;}
  .hero-actions .btn{width:100%;}
  .panel-card{padding:22px 18px;}
  .pm-row{flex-wrap:wrap;gap:4px;}
  .topic-card{padding:24px 20px;}
  .download-card{padding:34px 18px;}
  .form-card{padding:24px 18px;}
  .assure-card{padding:30px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --deep:#0E3B2E;
  --green:#1F6F5C;
  --green-l:#2E8B72;
  --coral:#E4572E;
  --amber:#B7791F;
  --amber-bg:#FDF6E7;
  --ink:#14171A;
  --body:#2C3336;
  --muted:#5C6A66;
  --line:#E2E6E2;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --mint:#EDF5F1;
  --grad:linear-gradient(120deg,#0E3B2E 0%,#1F6F5C 58%,#2E8B72 100%);
  --grad-dark:linear-gradient(120deg,#0A2C22 0%,#175647 58%,#236A58 100%);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 12px 32px rgba(14,59,46,.08);
  --sh-h:0 18px 44px rgba(14,59,46,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
a{color:var(--green);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--coral);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--green);
  font-weight:600;margin-bottom:18px;
  padding:6px 14px;border-radius:999px;background:var(--mint);
}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--mint);color:var(--deep);font-size:12px;letter-spacing:.06em;font-weight:600;
}
.chip-coral{background:var(--coral);color:#fff;}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(14,59,46,.18);}
.btn-primary:hover{background:var(--grad-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-h);}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent;}
.btn-ghost:hover{background:var(--mint);color:var(--green);}
.btn-on-dark{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06);}
.btn-on-dark:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{min-height:42px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(14,59,46,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.2;color:var(--deep);}
.brand:hover{color:var(--deep);}
.brand-line1{font-size:22px;font-weight:600;letter-spacing:.02em;}
.brand-line2{font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:5px;}
.nav-main{display:flex;align-items:center;gap:32px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--body);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--green);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--deep);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:48px;height:48px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--deep);transition:.25s var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* 文章头 */
.post-head{background:var(--mint);border-bottom:1px solid var(--line);padding:44px 0 40px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumbs a{color:var(--green);}
.crumbs span.sep{color:#B9C4C0;}
.crumbs .cur{color:var(--muted);max-width:100%;}
.post-head h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.32;letter-spacing:-.01em;
  margin-bottom:16px;color:var(--ink);
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.meta-bar .dot{width:4px;height:4px;border-radius:50%;background:#C6D2CD;display:inline-block;}
/* 要点速览 */
.quick-points{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--sh);margin-bottom:40px;
}
.quick-points h2{font-size:16px;letter-spacing:.04em;color:var(--deep);margin-bottom:12px;}
.quick-points p{font-size:16px;line-height:1.85;color:var(--body);}
/* 主体两栏 */
.post-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:52px;align-items:start;}
.toc{position:sticky;top:100px;}
.toc h3{font-size:13px;letter-spacing:.12em;color:var(--muted);font-weight:600;margin-bottom:14px;}
.toc-list{list-style:none;padding:0;margin:0;border-left:1px solid var(--line);}
.toc-list li{margin:0;}
.toc-list a{
  display:block;padding:8px 0 8px 16px;font-size:14px;line-height:1.6;color:var(--muted);
  border-left:2px solid transparent;margin-left:-1px;transition:.25s var(--ease);
}
.toc-list a:hover,.toc-list a.is-on{color:var(--deep);border-left-color:var(--coral);background:var(--mint);}
/* 正文 */
.article-body{max-width:760px;font-size:17px;line-height:1.85;color:var(--body);min-width:0;}
.article-body>*:first-child{margin-top:0;}
.article-body h2{
  font-size:clamp(21px,2.1vw,24px);line-height:1.45;margin:42px 0 16px;
  padding-left:14px;border-left:3px solid var(--coral);color:var(--ink);
}
.article-body h3{font-size:20px;line-height:1.5;margin:30px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--deep);}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:24px;}
.article-body li{margin-bottom:10px;}
.article-body ul li::marker{color:var(--coral);}
.article-body ol li::marker{color:var(--coral);font-variant-numeric:tabular-nums;}
.article-body a{color:var(--green);border-bottom:1px solid rgba(31,111,92,.32);}
.article-body a:hover{color:var(--coral);border-bottom-color:rgba(228,87,46,.4);}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--mint);
  border-left:4px solid var(--deep);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--deep);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:24px 0;height:auto;}
.article-body figure{margin:26px 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:24px 0;font-size:15px;
  display:block;overflow-x:auto;border-radius:var(--r-md);
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--mint);color:var(--deep);font-weight:600;}
.article-body code{background:var(--mint);padding:2px 6px;border-radius:6px;font-size:14px;}
/* 空态 */
.empty-state{
  background:var(--mint);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:44px 32px;text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:12px;color:var(--deep);}
.empty-state p{color:var(--muted);margin-bottom:22px;}
/* 栏目导航条 */
.post-nav-bar{
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.post-nav-bar .back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--deep);
}
.post-nav-bar .back-link:hover{color:var(--coral);}
.post-nav-bar .tags{display:flex;flex-wrap:wrap;gap:8px;}
/* 风险条 */
.risk-bar{
  background:var(--amber-bg);border-radius:var(--r-md);padding:18px 22px;
  border-left:4px solid var(--amber);color:#6F4A10;font-size:15px;line-height:1.8;
}
.risk-bar strong{color:var(--amber);}
/* 下载 CTA */
.dl-cta{
  background:var(--grad);border-radius:var(--r-lg);color:#fff;padding:44px 40px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;align-items:center;
  position:relative;overflow:hidden;
}
.dl-cta::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.14),rgba(255,255,255,0) 70%);pointer-events:none;
}
.dl-cta h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:12px;line-height:1.4;}
.dl-cta p{color:rgba(255,255,255,.84);font-size:15px;line-height:1.8;}
.dl-cta-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;position:relative;z-index:1;}
.dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  min-height:88px;padding:14px 10px;border-radius:14px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:14px;font-weight:600;text-align:center;
  transition:.25s var(--ease);
}
.dl-btn:hover{background:#fff;color:var(--deep);border-color:#fff;transform:translateY(-3px);}
.dl-btn small{font-size:11px;letter-spacing:.06em;font-weight:400;color:rgba(255,255,255,.72);}
.dl-btn:hover small{color:var(--muted);}
/* FAQ */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--green);}
.faq-item summary .arw{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  font-size:12px;transition:.25s var(--ease);
}
.faq-item[open] summary{color:var(--deep);}
.faq-item[open] summary .arw{background:var(--coral);border-color:var(--coral);color:#fff;transform:rotate(180deg);}
.faq-answer{padding:0 4px 22px;font-size:16px;line-height:1.85;color:var(--body);background:transparent;}
.faq-item[open] .faq-answer{background:linear-gradient(180deg,rgba(237,245,241,.7),rgba(237,245,241,0));border-radius:0 0 var(--r-md) var(--r-md);}
/* 页脚 */
.site-footer{background:var(--deep);color:rgba(255,255,255,.78);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1.2fr;gap:40px;min-width:0;}
.footer-brand .brand-line1{color:#fff;font-size:22px;font-weight:600;letter-spacing:.02em;display:block;}
.footer-brand .brand-line2{color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.14em;margin-top:6px;display:block;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:340px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
/* 响应式 */
@media (max-width:1180px){
  .post-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .toc{display:none;}
}
@media (max-width:1024px){
  .section{padding:72px 0;}
  .nav-main{gap:20px;}
  .nav-links{gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dl-cta{grid-template-columns:minmax(0,1fr);padding:36px 28px;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-main{
    position:fixed;inset:76px 0 0 0;background:#fff;flex-direction:column;align-items:stretch;
    justify-content:flex-start;gap:0;padding:8px 24px 32px;overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.25s var(--ease);
    border-top:1px solid var(--line);
  }
  body.nav-open .nav-main{transform:translateY(0);opacity:1;visibility:visible;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{
    display:flex;align-items:center;min-height:56px;font-size:16px;
    border-bottom:1px solid var(--line);padding-left:12px;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{border-left:3px solid var(--coral);padding-left:9px;}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:22px;}
  .nav-actions .btn{width:100%;}
  .post-head{padding:32px 0 30px;}
  .dl-cta-btns{grid-template-columns:repeat(3,minmax(0,1fr));}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding:0 20px;}
  .article-body{font-size:16px;}
  .quick-points{padding:22px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-line1{font-size:20px;}
  .dl-cta-btns{grid-template-columns:minmax(0,1fr);}
  .dl-btn{flex-direction:row;justify-content:space-between;min-height:56px;padding:0 18px;text-align:left;}
  .post-nav-bar{flex-direction:column;align-items:flex-start;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
}

/* roulang page: category1 */
:root{
  --deep:#0E3B2E;
  --green:#1F6F5C;
  --green-l:#2E8B72;
  --coral:#E4572E;
  --amber:#B7791F;
  --amber-bg:#FDF6E7;
  --ink:#14171A;
  --body:#2C3336;
  --muted:#5C6A66;
  --line:#E2E6E2;
  --bg:#F7F6F1;
  --card:#FFFFFF;
  --mint:#EDF5F1;
  --grad:linear-gradient(120deg,#0E3B2E 0%,#1F6F5C 58%,#2E8B72 100%);
  --grad-dark:linear-gradient(120deg,#0A2C22 0%,#175647 58%,#236A58 100%);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh:0 12px 32px rgba(14,59,46,.08);
  --sh-h:0 18px 44px rgba(14,59,46,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
a{color:var(--green);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--coral);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
p{margin:0 0 14px;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35;}
ul,ol{margin:0;padding:0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-mint{background:var(--mint);}
.section-white{background:var(--card);}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--green);
  font-weight:600;margin-bottom:18px;padding:6px 14px;border-radius:999px;background:var(--mint);
}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--mint);color:var(--deep);font-size:12px;letter-spacing:.06em;font-weight:600;
}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(14,59,46,.18);}
.btn-primary:hover{background:var(--grad-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-h);}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent;}
.btn-ghost:hover{background:var(--mint);color:var(--green);}
.btn-sm{min-height:42px;padding:0 16px;font-size:14px;}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(14,59,46,.07);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.brand{display:flex;flex-direction:column;justify-content:center;line-height:1.2;color:var(--deep);min-width:0;}
.brand:hover{color:var(--deep);}
.brand-line1{font-size:22px;font-weight:600;letter-spacing:.02em;}
.brand-line2{font-size:11px;letter-spacing:.14em;color:var(--muted);margin-top:5px;}
.nav-main{display:flex;align-items:center;gap:32px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--body);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--coral);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--green);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--deep);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:48px;height:48px;border:1px solid var(--line);background:#fff;
  border-radius:12px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--deep);transition:.25s var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* 分类页头 */
.cat-hero{
  background:var(--mint);
  border-bottom:1px solid var(--line);
  padding:34px 0 38px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--green);}
.breadcrumb .sep{color:#B9C4BF;}
.breadcrumb [aria-current="page"]{color:var(--deep);font-weight:600;}
.cat-hero-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:end;}
.cat-hero-main h1{font-size:clamp(26px,3.2vw,36px);line-height:1.3;letter-spacing:-.01em;margin-bottom:12px;}
.cat-hero-main p{margin:0;max-width:720px;font-size:15px;line-height:1.85;color:var(--muted);}
.cat-hero-badges{display:flex;flex-direction:column;gap:10px;align-items:flex-start;}
.mini-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:12.5px;color:var(--deep);font-weight:600;white-space:nowrap;
}
.mini-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--coral);display:block;}
/* 列表主体 */
.list-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:36px;align-items:start;}
.list-main h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:22px;}
.post-card{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:18px;margin-bottom:20px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#CFDAD4;}
.post-thumb{
  aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;
  background:linear-gradient(140deg,#EDF5F1 0%,#D6E9E0 100%);
  display:flex;align-items:center;justify-content:center;position:relative;min-width:0;
}
.post-thumb::after{
  content:"";position:absolute;right:-26px;bottom:-26px;width:96px;height:96px;border-radius:50%;
  background:rgba(46,139,114,.16);
}
.post-thumb span{
  position:relative;z-index:1;font-size:12px;letter-spacing:.08em;color:var(--green);font-weight:600;
  text-align:center;padding:0 10px;
}
.post-body{min-width:0;display:flex;flex-direction:column;}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:8px;}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6D0CB;}
.post-body h3{font-size:19px;line-height:1.45;margin-bottom:8px;}
.post-body h3 a{color:var(--ink);}
.post-body h3 a:hover{color:var(--coral);}
.post-excerpt{
  font-size:14.5px;color:var(--muted);margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-more{font-size:14px;font-weight:600;color:var(--green);margin-top:auto;}
.post-more::after{content:"→";margin-left:6px;transition:margin .25s var(--ease);}
.post-more:hover::after{margin-left:10px;}
.list-foot{margin-top:26px;display:flex;justify-content:center;}
.list-foot a{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;color:var(--green);}
.list-foot a::after{content:"→";transition:transform .25s var(--ease);}
.list-foot a:hover::after{transform:translateX(4px);}
.empty-state{
  background:var(--mint);border:1px dashed #C6DCD2;border-radius:var(--r-md);
  padding:32px 24px;text-align:center;color:var(--muted);font-size:15px;
}
/* 侧边 */
.list-aside{min-width:0;position:sticky;top:104px;}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;margin-bottom:20px;}
.aside-card h3{font-size:16px;margin-bottom:14px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag-cloud span{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--mint);color:var(--deep);font-size:13px;transition:background .25s var(--ease),color .25s var(--ease);
}
.tag-cloud span:hover{background:#DCEDE6;}
.aside-note{font-size:13.5px;color:var(--muted);line-height:1.8;margin:0;}
.aside-list{list-style:none;}
.aside-list li{padding:10px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted);}
.aside-list li:last-child{border-bottom:0;padding-bottom:0;}
/* 知识要点 */
.knowledge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px;}
.knowledge-item{padding:22px 0;border-bottom:1px solid var(--line);min-width:0;}
.knowledge-item h3{font-size:17px;margin-bottom:8px;display:flex;align-items:flex-start;gap:10px;}
.knowledge-item h3::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--coral);margin-top:11px;flex:0 0 auto;
}
.knowledge-item p{margin:0;font-size:14.5px;color:var(--muted);}
/* 阅读顺序 */
.steps{list-style:none;position:relative;}
.step{
  display:grid;grid-template-columns:72px minmax(0,1fr);gap:22px;
  padding:22px 0;border-bottom:1px solid var(--line);min-width:0;
}
.step:last-child{border-bottom:0;}
.step-num{
  font-size:30px;font-weight:700;color:var(--coral);line-height:1;
  font-variant-numeric:tabular-nums;padding-top:4px;
}
.step-body{min-width:0;}
.step-body h3{font-size:17.5px;margin-bottom:6px;}
.step-body p{margin:0;font-size:14.5px;color:var(--muted);}
/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.related-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;min-width:0;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#CFDAD4;color:var(--body);}
.related-card h3{font-size:16px;line-height:1.5;margin-bottom:10px;color:var(--ink);}
.related-card:hover h3{color:var(--coral);}
.related-card .rel-meta{font-size:12.5px;color:var(--muted);}
/* 风险提示 */
.risk-bar{
  background:var(--amber-bg);border-left:4px solid var(--amber);border-radius:var(--r-md);
  padding:20px 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.risk-bar p{margin:0;font-size:14.5px;color:#7A5312;line-height:1.8;max-width:840px;}
.risk-bar a{font-size:14px;font-weight:600;color:var(--amber);white-space:nowrap;}
.risk-bar a:hover{color:var(--coral);}
/* FAQ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{
  border-bottom:1px solid var(--line);border-radius:var(--r-md);padding:0 18px;
  transition:background .25s var(--ease);
}
.faq-item[open]{background:var(--mint);border-bottom-color:transparent;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;
  list-style:none;min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:0 0 auto;
  border-right:2px solid var(--green);border-bottom:2px solid var(--green);
  transform:rotate(45deg);transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-item[open] summary{color:var(--deep);}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--coral);}
.faq-answer{padding:0 0 22px;font-size:15px;color:var(--body);line-height:1.85;}
.faq-answer p:last-child{margin-bottom:0;}
/* 下载条 */
.download-strip{
  background:var(--mint);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 36px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:center;
}
.download-strip h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px;}
.download-strip p{margin:0;font-size:14.5px;color:var(--muted);max-width:560px;}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;}
.dl-btn{
  display:inline-flex;flex-direction:column;align-items:flex-start;justify-content:center;
  min-height:56px;padding:10px 20px;border-radius:var(--r-sm);background:#fff;border:1px solid var(--line);
  color:var(--deep);font-size:15px;font-weight:600;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.dl-btn:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px);box-shadow:var(--sh);}
.dl-btn small{display:block;font-size:11.5px;font-weight:500;color:var(--muted);letter-spacing:.06em;margin-top:2px;}
/* 页脚 */
.site-footer{background:var(--deep);color:rgba(255,255,255,.78);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr);gap:40px;}
.footer-brand{min-width:0;}
.footer-brand .brand-line1{color:#fff;display:block;}
.footer-brand .brand-line2{color:rgba(255,255,255,.6);display:block;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:16px 0 0;max-width:320px;}
.footer-col{min-width:0;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col ul{list-style:none;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.78);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.6);
}
/* 响应式 */
@media (max-width:1024px){
  .section{padding:72px 0;}
  .list-layout{grid-template-columns:1fr;gap:28px;}
  .list-aside{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cat-hero-inner{grid-template-columns:1fr;gap:20px;align-items:start;}
  .cat-hero-badges{flex-direction:row;flex-wrap:wrap;}
  .download-strip{grid-template-columns:1fr;padding:28px;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-main{
    display:none;position:fixed;left:0;right:0;top:76px;bottom:0;background:#fff;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:8px 20px 32px;gap:0;overflow-y:auto;
  }
  body.nav-open .nav-main{display:flex;}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{
    display:flex;align-items:center;min-height:56px;padding:16px 0;font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--deep);box-shadow:inset 3px 0 0 var(--coral);padding-left:12px;}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:22px;}
  .nav-actions .btn{width:100%;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding:0 20px;}
  .cat-hero{padding:26px 0 30px;}
  .post-card{grid-template-columns:1fr;gap:16px;padding:16px;}
  .post-thumb{aspect-ratio:16/9;}
  .knowledge-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:56px minmax(0,1fr);gap:16px;}
  .step-num{font-size:26px;}
  .download-actions{width:100%;}
  .dl-btn{flex:1 1 160px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero-main h1{font-size:24px;}
  .brand-line1{font-size:20px;}
  .brand-line2{font-size:10px;letter-spacing:.1em;}
  .risk-bar{padding:16px 18px;}
  .download-strip{padding:22px 18px;}
  .dl-btn{flex:1 1 100%;}
  .post-body h3{font-size:17px;}
  .faq-item{padding:0 14px;}
  .faq-item summary{font-size:15.5px;}
}