/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --c-primary:#0F5B52;
  --c-primary-dark:#0A3F39;
  --c-primary-soft:rgba(15,91,82,.08);
  --c-primary-line:rgba(15,91,82,.3);
  --c-accent:#E2603F;
  --c-accent-soft:rgba(226,96,63,.12);
  --c-amber:#F2C14E;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-divider:#EFEAE1;
  --c-text:#17201E;
  --c-text-2:#5E6A67;
  --c-text-3:#9AA3A0;
  --c-border:#E3DED4;
  --r-card:16px;
  --r-pill:999px;
  --r-md:10px;
  --r-img:12px;
  --r-badge:6px;
  --sh-card:0 1px 2px rgba(23,32,30,.06);
  --sh-hover:0 14px 32px -14px rgba(15,91,82,.28);
  --sh-nav:0 8px 24px -16px rgba(15,91,82,.45);
  --t:180ms ease;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter",-apple-system,"Segoe UI",ui-monospace,Menlo,Consolas,monospace;
  --header-h:68px;
  --tab-h:64px;
  --sec-pad:96px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:var(--header-h) 0 0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--c-accent);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;margin:0;}
button{cursor:pointer;background:none;border:0;}
table{border-collapse:collapse;width:100%;}
:focus{outline:none;}
:focus-visible{outline:3px solid rgba(226,96,63,.4);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
::selection{background:rgba(226,96,63,.22);}

/* ===================== 容器与通用 ===================== */
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec-pad) 0;position:relative;}
.section--alt{background:var(--c-surface);}
.section--tight{padding-top:72px;padding-bottom:72px;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-soft);
  padding:6px 14px;border-radius:var(--r-badge);margin-bottom:16px;
}
.eyebrow i{font-size:12px;color:var(--c-accent);}
h2.section-title{
  font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;
  padding-left:14px;border-left:4px solid var(--c-primary);
  color:var(--c-text);
}
.section-head--center h2.section-title{
  padding-left:0;border-left:0;
}
.section-desc{margin-top:14px;color:var(--c-text-2);font-size:16px;line-height:1.8;}
.section-head--center .section-desc{margin-top:16px;}
section[id],div[id]{scroll-margin-top:96px;}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),background-color var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px -10px rgba(15,91,82,.7);}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(15,91,82,.8);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary-line);border-radius:var(--r-md);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 14px;min-height:40px;border-radius:var(--r-md);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4);}
.btn-light:hover{background:#fff;color:var(--c-primary-dark);border-color:#fff;}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:default;transform:none;}

/* ===================== 徽章 ===================== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1.4;font-weight:600;letter-spacing:.04em;
  padding:5px 10px;border-radius:var(--r-badge);
}
.badge-cat{background:var(--c-primary-soft);color:var(--c-primary);}
.badge-accent{background:var(--c-accent-soft);color:var(--c-accent);}
.badge-date{background:var(--c-divider);color:var(--c-text-2);font-weight:500;}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:800;
  height:var(--header-h);background:var(--c-surface);
  border-bottom:1px solid var(--c-border);
  transition:box-shadow var(--t),background-color var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-nav);}
.header-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:baseline;gap:7px;flex-shrink:0;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:14px;font-family:var(--font-num);font-weight:700;
  align-self:center;
}
.brand-name{font-size:19px;font-weight:700;color:var(--c-text);letter-spacing:.01em;line-height:1;}
.brand-sub{font-size:12px;color:var(--c-text-2);letter-spacing:.14em;line-height:1;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;
  border-radius:3px;background:var(--c-accent);
}
.header-cta{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);
  color:var(--c-text);font-size:19px;align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--c-primary-soft);color:var(--c-primary);}

/* 移动端抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);
  background:var(--c-surface);z-index:900;
  transform:translateX(102%);transition:transform 240ms ease;
  padding:24px 20px;box-shadow:-18px 0 40px -22px rgba(10,63,57,.5);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--c-text);}
.drawer-close{width:40px;height:40px;border-radius:var(--r-md);font-size:18px;color:var(--c-text-2);}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-link{
  display:flex;align-items:center;gap:12px;
  padding:14px 12px;border-radius:var(--r-md);
  font-size:16px;font-weight:500;color:var(--c-text);
}
.drawer-link i{width:20px;text-align:center;color:var(--c-primary);font-size:15px;}
.drawer-link:hover,.drawer-link.is-active{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-foot{margin-top:24px;padding-top:20px;border-top:1px solid var(--c-divider);}
.mask{
  position:fixed;inset:0;background:rgba(10,63,57,.42);
  opacity:0;visibility:hidden;transition:opacity 240ms ease,visibility 240ms ease;z-index:880;
}
.mask.is-on{opacity:1;visibility:visible;}
body.drawer-locked{overflow:hidden;}

/* ===================== Hero ===================== */
.hero{
  position:relative;overflow:hidden;
  min-height:calc(88vh - var(--header-h));
  display:flex;align-items:center;
  padding:72px 0;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(10,63,57,.93) 0%,rgba(15,91,82,.86) 52%,rgba(10,63,57,.78) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;}
.hero-grid{align-items:center;}
.hero-copy{color:#fff;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;font-weight:600;
  padding:6px 14px;border-radius:var(--r-badge);
  background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.22);
  margin-bottom:22px;
}
.hero-tag i{color:var(--c-amber);font-size:11px;}
h1.hero-title{
  font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;color:#fff;
  letter-spacing:.01em;margin-bottom:18px;
}
h1.hero-title em{font-style:normal;color:var(--c-amber);}
.hero-sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.86);max-width:520px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.9);}
.trust-item i{color:var(--c-amber);font-size:14px;}

.hero-card{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.26);
  border-radius:var(--r-card);
  padding:28px 26px;backdrop-filter:blur(3px);
}
.hero-card h2{font-size:18px;font-weight:700;color:#fff;margin-bottom:8px;padding:0;border:0;}
.hero-card-note{font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;margin-bottom:20px;}
.hero-card-list{display:flex;flex-direction:column;gap:14px;margin-bottom:24px;}
.hero-card-row{display:flex;gap:12px;align-items:flex-start;}
.hero-card-row i{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:rgba(242,193,78,.18);color:var(--c-amber);
  display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:2px;
}
.hero-card-row strong{display:block;font-size:15px;color:#fff;font-weight:600;line-height:1.5;}
.hero-card-row span{display:block;font-size:13px;color:rgba(255,255,255,.72);line-height:1.6;}

/* ===================== 锚点索引条 ===================== */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:700;
  background:rgba(246,244,239,.96);
  border-bottom:1px solid var(--c-border);
  backdrop-filter:blur(6px);
}
.anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;
  padding:12px 0;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none;}
.anchor-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--c-text-2);
  background:var(--c-surface);border:1px solid var(--c-border);
  transition:all var(--t);min-height:40px;
}
.anchor-chip i{font-size:11px;color:var(--c-text-3);}
.anchor-chip:hover{color:var(--c-primary);border-color:var(--c-primary-line);}
.anchor-chip.is-active{
  background:var(--c-accent);color:#fff;border-color:var(--c-accent);font-weight:600;
}
.anchor-chip.is-active i{color:rgba(255,255,255,.9);}

/* ===================== 卖点区 ===================== */
.feature-grid{margin-bottom:-24px;}
.feature-item{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);
  height:calc(100% - 24px);margin-bottom:24px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  position:relative;overflow:hidden;
}
.feature-item:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line);}
.feature-item--tall{padding:30px 28px;}
.feature-num{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-accent);display:block;margin-bottom:16px;
}
.feature-icon{
  width:46px;height:46px;border-radius:13px;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:19px;
  margin-bottom:18px;
}
.feature-item h3{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:10px;color:var(--c-text);}
.feature-item p{font-size:15px;line-height:1.8;color:var(--c-text-2);}
.feature-mini{
  position:absolute;right:-30px;bottom:-30px;width:120px;height:120px;
  border-radius:50%;border:1px solid rgba(15,91,82,.08);
}

/* ===================== 演示区 ===================== */
.demo-row{padding:44px 0;border-bottom:1px solid var(--c-divider);}
.demo-row:last-child{border-bottom:0;padding-bottom:0;}
.demo-row:first-child{padding-top:0;}
.demo-media{
  border-radius:var(--r-img);overflow:hidden;background:var(--c-primary-soft);
  box-shadow:var(--sh-card);position:relative;aspect-ratio:16/10;
}
.demo-media img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img);}
.demo-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  border:1px solid rgba(15,91,82,.1);pointer-events:none;
}
.demo-body{padding-left:8px;}
.demo-body h3{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:12px;color:var(--c-text);}
.demo-lead{font-size:15px;line-height:1.85;color:var(--c-text-2);margin-bottom:22px;}
.step-list{display:flex;flex-direction:column;gap:16px;margin-bottom:20px;}
.step-item{display:flex;gap:14px;align-items:flex-start;}
.step-no{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  background:var(--c-surface);border:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;color:var(--c-primary);
}
.step-item h4{font-size:15px;font-weight:600;color:var(--c-text);margin-bottom:4px;line-height:1.5;}
.step-item p{font-size:14px;line-height:1.75;color:var(--c-text-2);}
.demo-conclusion{
  display:flex;gap:10px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--r-md);
  background:var(--c-accent-soft);border-left:4px solid var(--c-accent);
  font-size:14px;line-height:1.7;color:var(--c-text);
}
.demo-conclusion i{color:var(--c-accent);margin-top:4px;font-size:13px;}

/* ===================== 证据区 ===================== */
.evidence{background:var(--c-primary-dark);color:#fff;}
.evidence .section-title{color:#fff;border-left-color:var(--c-amber);}
.evidence .section-desc{color:rgba(255,255,255,.72);}
.evidence .eyebrow{background:rgba(255,255,255,.12);color:#fff;}
.stat-grid{margin-bottom:56px;}
.stat-item{
  padding:22px 20px;border-radius:var(--r-card);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  height:calc(100% - 24px);margin-bottom:24px;text-align:left;
}
.stat-num{
  font-family:var(--font-num);font-size:clamp(28px,3.6vw,38px);font-weight:700;
  color:var(--c-amber);line-height:1.15;letter-spacing:-.01em;
}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78);letter-spacing:.04em;}
.quote-grid{margin-bottom:-24px;}
.quote-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:24px;height:calc(100% - 24px);margin-bottom:24px;
  display:flex;flex-direction:column;justify-content:space-between;
}
.quote-card p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.9);margin-bottom:18px;}
.quote-card p i{color:var(--c-amber);font-size:12px;margin-right:8px;}
.quote-source{font-size:13px;color:rgba(255,255,255,.6);display:flex;align-items:center;gap:8px;}
.quote-source::before{content:"";width:18px;height:1px;background:rgba(255,255,255,.36);display:inline-block;}

/* ===================== 服务方案 ===================== */
.price-grid{margin-bottom:-24px;align-items:stretch;}
.price-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:28px 24px;
  height:calc(100% - 24px);margin-bottom:24px;
  display:flex;flex-direction:column;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  position:relative;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line);}
.price-card--featured{
  border:2px solid var(--c-accent);
  transform:translateY(-8px);
  box-shadow:0 18px 40px -20px rgba(226,96,63,.45);
}
.price-card--featured:hover{transform:translateY(-10px);}
.price-badge{
  position:absolute;top:-13px;left:24px;
  background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:var(--r-badge);
}
.price-name{font-size:17px;font-weight:700;color:var(--c-text);margin-bottom:6px;}
.price-for{font-size:13px;color:var(--c-text-3);margin-bottom:20px;line-height:1.6;}
.price-amount{
  font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--c-primary);
  line-height:1.1;letter-spacing:-.01em;margin-bottom:6px;
}
.price-amount small{font-size:14px;font-weight:500;color:var(--c-text-3);margin-left:4px;font-family:var(--font-cn);}
.price-divider{height:1px;background:var(--c-divider);margin:20px 0;}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;flex:1;}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;color:var(--c-text-2);}
.price-list li i{color:var(--c-primary);font-size:12px;margin-top:6px;flex:0 0 auto;}
.price-card--featured .price-list li i{color:var(--c-accent);}

/* ===================== FAQ ===================== */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{border-color:var(--c-primary-line);box-shadow:var(--sh-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform var(--t),background-color var(--t),color var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-accent);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease;}
.faq-item.is-open .faq-a{max-height:600px;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ===================== 最新信息 ===================== */
.news-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;margin-bottom:40px;
}
.news-more{font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.news-more i{font-size:12px;transition:transform var(--t);}
.news-more:hover i{transform:translateX(3px);}
.news-grid{margin-bottom:-24px;}
.news-card{
  display:flex;flex-direction:column;height:calc(100% - 24px);margin-bottom:24px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  color:inherit;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line);color:inherit;}
.news-thumb{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:var(--c-primary-soft);
  background-image:repeating-linear-gradient(135deg,rgba(15,91,82,.07) 0 10px,rgba(15,91,82,.03) 10px 20px);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  font-size:14px;line-height:1.75;color:var(--c-text-2);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.news-date{font-size:13px;color:var(--c-text-3);font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* 空态 */
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-border);
  border-radius:var(--r-card);padding:56px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--c-text-3);margin-bottom:14px;display:block;}
.empty-state p{font-size:15px;color:var(--c-text-2);margin-bottom:20px;}

/* ===================== 联系 / 转化 ===================== */
.contact-wrap{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:calc(var(--r-card) + 4px);overflow:hidden;
  box-shadow:var(--sh-card);
}
.contact-side{
  padding:40px 34px;color:#fff;position:relative;
  background-image:linear-gradient(150deg,rgba(10,63,57,.95),rgba(15,91,82,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.contact-side h2{font-size:24px;font-weight:700;line-height:1.4;margin-bottom:14px;padding:0;border:0;color:#fff;}
.contact-side p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.82);margin-bottom:26px;}
.contact-points{display:flex;flex-direction:column;gap:14px;}
.contact-points li{display:flex;gap:11px;align-items:center;font-size:14px;color:rgba(255,255,255,.9);}
.contact-points li i{color:var(--c-amber);font-size:13px;width:16px;text-align:center;}
.contact-form{padding:40px 34px;}
.form-field{margin-bottom:18px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
.form-label span{color:var(--c-accent);margin-left:3px;}
.form-input{
  width:100%;min-height:48px;padding:12px 16px;
  background:var(--c-bg);border:1px solid var(--c-border);border-radius:var(--r-md);
  font-size:15px;line-height:1.6;color:var(--c-text);
  transition:border-color var(--t),background-color var(--t),box-shadow var(--t);
}
textarea.form-input{min-height:104px;resize:vertical;}
.form-input::placeholder{color:var(--c-text-3);}
.form-input:focus{
  outline:none;border-color:var(--c-primary);background:var(--c-surface);
  box-shadow:0 0 0 3px rgba(15,91,82,.12);
}
.form-input:focus-visible{outline:none;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:22px;}
.form-note{font-size:13px;color:var(--c-text-3);line-height:1.7;}
.form-tip{
  margin-top:16px;font-size:14px;color:var(--c-primary);font-weight:600;
  opacity:0;transform:translateY(-4px);transition:opacity var(--t),transform var(--t);
}
.form-tip.is-on{opacity:1;transform:translateY(0);}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--c-primary-dark);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{margin-bottom:-24px;}
.footer-col{padding-bottom:24px;}
.footer-brand{display:flex;align-items:baseline;gap:7px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.6);}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:var(--c-accent);}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px;display:flex;gap:10px;align-items:flex-start;line-height:1.7;}
.footer-contact li i{color:var(--c-accent);font-size:13px;margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:40px;padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--c-accent);}

/* ===================== 浮动 CTA / 返回顶部 ===================== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity 240ms ease,transform 240ms ease,visibility 240ms ease,background-color var(--t);
  box-shadow:0 14px 30px -14px rgba(15,91,82,.75);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top{
  position:fixed;left:20px;bottom:20px;z-index:880;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-surface);color:var(--c-primary);
  border:1px solid var(--c-border);box-shadow:var(--sh-card);
  display:none;align-items:center;justify-content:center;font-size:15px;
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
}
.back-top.is-visible{opacity:1;visibility:visible;}
.back-top:hover{background:var(--c-primary-soft);}

/* ===================== 移动端底部 Tab ===================== */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:850;
  height:calc(var(--tab-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--c-border);
  backdrop-filter:blur(8px);
}
.tab-inner{display:flex;height:var(--tab-h);}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:11px;color:var(--c-text-3);font-weight:500;min-height:44px;
}
.tab-item i{font-size:19px;line-height:1;}
.tab-item.is-active{color:var(--c-primary);font-weight:700;}
.tab-item.is-active i{color:var(--c-primary);}
.tab-item:hover{color:var(--c-primary);}

/* ===================== 响应式 ===================== */
@media screen and (max-width:1024px){
  :root{--sec-pad:72px;}
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .header-cta .btn{display:none;}
  .mobile-tabbar{display:block;}
  body{padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom));}
  .hero{min-height:calc(88vh - var(--header-h));padding:64px 0;}
  .hero-copy{margin-bottom:40px;}
  .hero-card{background:rgba(255,255,255,.12);}
  .demo-body{padding-left:0;margin-top:28px;}
  .demo-row{padding:36px 0;}
  .price-card--featured{transform:none;}
  .price-card--featured:hover{transform:translateY(-2px);}
  .float-cta{
    right:16px;left:16px;width:auto;
    bottom:calc(var(--tab-h) + env(safe-area-inset-bottom) + 12px);
    justify-content:center;
  }
  .back-top{display:flex;left:16px;bottom:calc(var(--tab-h) + env(safe-area-inset-bottom) + 12px);}
  .quote-grid,.stat-grid,.news-grid,.price-grid,.feature-grid,.footer-grid{margin-bottom:-16px;}
  .news-card,.price-card,.quote-card,.stat-item,.feature-item{margin-bottom:16px;height:calc(100% - 16px);}
}

@media screen and (max-width:768px){
  :root{--sec-pad:56px;--header-h:56px;}
  body{font-size:16px;}
  .container{padding:0 18px;}
  .brand-name{font-size:17px;}
  .brand-sub{display:none;}
  .section-head{margin-bottom:32px;}
  .hero{min-height:74vh;padding:52px 0;}
  .hero-sub{font-size:15px;margin-bottom:24px;}
  .hero-actions{gap:12px;margin-bottom:28px;}
  .hero-actions .btn{flex:1 1 auto;min-width:130px;}
  .hero-trust{gap:16px;}
  .trust-item{font-size:13px;}
  .hero-card{padding:22px 20px;}
  .anchor-bar{top:var(--header-h);}
  .faq-q{padding:17px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 20px;font-size:14.5px;}
  .contact-side,.contact-form{padding:30px 22px;}
  .news-head{margin-bottom:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}

@media screen and (max-width:520px){
  .hero-title{font-size:clamp(24px,7vw,30px);}
  .hero-card-list{gap:12px;}
  .step-no{width:30px;height:30px;font-size:12px;}
  .price-amount{font-size:30px;}
  .btn{padding:0 20px;font-size:14.5px;}
  .tab-item i{font-size:18px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .feature-item:hover,.news-card:hover,.price-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink:#0F5B52;
  --ink-dark:#0A3F39;
  --ink-soft:rgba(15,91,82,.10);
  --clay:#E2603F;
  --amber:#F2C14E;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E3DED4;
  --line-soft:#EFEAE1;
  --t1:#17201E;
  --t2:#5E6A67;
  --t3:#9AA3A0;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(23,32,30,.06);
  --sh-hover:0 14px 32px -14px rgba(15,91,82,.28);
  --tr:180ms ease;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--clay)}
button{font-family:inherit}
ul,ol{padding-left:1.2em}
:focus-visible{outline:3px solid rgba(226,96,63,.40);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:800;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(150%) blur(6px);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -12px rgba(23,32,30,.28)}
.nav-inner{
  height:var(--nav-h);
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:baseline;gap:6px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--ink);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;align-self:center;
}
.brand-name{font-size:20px;font-weight:700;color:var(--ink-dark);letter-spacing:.02em}
.brand-sub{font-size:12px;color:var(--t2);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--t1);font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-link:hover{background:var(--line-soft);color:var(--ink)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:3px;border-radius:2px;background:var(--clay);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;color:var(--ink-dark);font-size:18px;cursor:pointer;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;cursor:pointer;font-weight:600;
  transition:transform var(--tr),background var(--tr),color var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.btn-primary{
  background:var(--ink);color:#fff;border-radius:var(--r-pill);
  padding:12px 24px;font-size:15px;box-shadow:0 8px 18px -12px rgba(15,91,82,.75);
}
.btn-primary:hover{background:var(--ink-dark);color:#fff;transform:translateY(-1px)}
.btn-secondary{
  background:#fff;color:var(--ink);border:1px solid rgba(15,91,82,.45);
  border-radius:var(--r-btn);padding:11px 20px;font-size:15px;
}
.btn-secondary:hover{border-color:var(--ink);background:rgba(15,91,82,.05);color:var(--ink)}
.btn-ghost{
  background:transparent;color:var(--ink);border-radius:var(--r-btn);padding:10px 14px;font-size:15px;
}
.btn-ghost:hover{background:var(--ink-soft);color:var(--ink-dark)}
.btn-sm{padding:10px 20px;font-size:14px}
.nav-cta{padding:11px 22px;font-size:14px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:950;background:rgba(23,32,30,.45);
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(320px,86vw);height:100%;
  background:#fff;padding:24px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-20px 0 40px -24px rgba(23,32,30,.5);overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);font-size:18px;color:var(--ink-dark);cursor:pointer}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 14px;border-radius:var(--r-btn);
  color:var(--t1);font-size:16px;border:1px solid transparent;
}
.drawer-link:hover{background:var(--line-soft)}
.drawer-link.is-active{color:var(--ink);font-weight:700;border-color:rgba(15,91,82,.25);background:rgba(15,91,82,.06)}
.drawer-cta{margin-top:16px;width:100%}

/* ---------- 面包屑 & 页头 ---------- */
.main{padding-bottom:24px}
.breadcrumb{
  padding:26px 0 0;font-size:14px;color:var(--t2);display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--t2)}
.breadcrumb a:hover{color:var(--clay)}
.breadcrumb .sep{color:var(--t3)}
.breadcrumb .current{
  color:var(--t1);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.article-head{padding:20px 0 28px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:6px;font-size:12px;letter-spacing:.06em;
  background:rgba(15,91,82,.10);color:var(--ink);font-weight:600;
}
.badge-date{background:var(--line-soft);color:var(--t2)}
.article-title{
  margin:16px 0 14px;
  font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;color:var(--t1);
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--t2);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--ink);font-size:13px}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;
  max-width:1080px;margin:0 auto;padding:48px 0 24px;align-items:start;
}
.article-main{max-width:760px;min-width:0}
.article-body{font-size:17px;line-height:1.9;color:var(--t1)}
.article-body > * + *{margin-top:1.1em}
.article-body p{margin:0 0 1.1em;color:#243030}
.article-body h2{
  position:relative;margin:2em 0 .8em;padding-left:16px;
  font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;color:var(--t1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;border-radius:2px;background:var(--ink);
}
.article-body h3{font-size:20px;line-height:1.4;font-weight:600;margin:1.6em 0 .6em;color:var(--ink-dark)}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(15,91,82,.35)}
.article-body a:hover{color:var(--clay);border-bottom-color:rgba(226,96,63,.5)}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.3em;line-height:1.9}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--ink);
}
.article-body ol li{margin-bottom:.5em}
.article-body ol li::marker{color:var(--ink);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:4px solid var(--clay);
  background:#FBF7F2;border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.6em 0;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{background:var(--bg);text-align:left;font-weight:600;color:var(--t1)}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line-soft)}
.article-body pre{
  background:#10201D;color:#E7F0EE;padding:18px;border-radius:var(--r-img);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{background:var(--line-soft);padding:2px 6px;border-radius:5px;font-size:.92em}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body .table-wrap{overflow-x:auto}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* 粘性目录 */
.toc{
  position:sticky;top:calc(var(--nav-h) + 24px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-card);
}
.toc-title{
  font-size:12px;letter-spacing:.10em;color:var(--t2);font-weight:700;margin-bottom:12px;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;line-height:1.5;color:var(--t2);
  border-left:3px solid transparent;
}
.toc-list a:hover{background:var(--line-soft);color:var(--ink)}
.toc-list a.is-current{color:var(--ink);font-weight:700;border-left-color:var(--clay);background:rgba(15,91,82,.06)}
.toc-back{
  margin-top:16px;display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);font-weight:600;
}

/* 文末 */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag-row .label{font-size:13px;color:var(--t2)}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:6px;
  background:#fff;border:1px solid var(--line);color:var(--t2);font-size:13px;
}
.tag:hover{border-color:rgba(15,91,82,.45);color:var(--ink)}
.entry-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* 相关推荐 */
.related{padding:64px 0 8px;border-top:1px solid var(--line);margin-top:48px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-title{position:relative;margin:0;padding-left:16px;font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700}
.section-title::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:1em;border-radius:2px;background:var(--ink)}
.link-more{font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--clay)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:rgba(15,91,82,.30)}
.card-thumb{position:relative;aspect-ratio:16/9;background:rgba(15,91,82,.08)}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-thumb .ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:rgba(15,91,82,.45);font-size:22px;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-title{font-size:18px;font-weight:700;line-height:1.5;color:var(--t1);margin:0}
.card-text{font-size:15px;line-height:1.7;color:var(--t2);margin:0}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--t2);margin-top:auto}
.empty-state{
  text-align:center;padding:48px 24px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-card);color:var(--t2);
}
.empty-state i{font-size:26px;color:rgba(15,91,82,.5);display:block;margin-bottom:12px}
.empty-state p{margin:0 0 18px;font-size:15px}

/* 咨询 CTA */
.cta-band{padding:56px 0 76px}
.cta-inner{
  background:var(--ink-dark);border-radius:20px;padding:40px;
  display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:32px;align-items:center;
  color:#fff;position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;bottom:-60px;width:220px;height:220px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);
}
.cta-inner h2{margin:0 0 12px;font-size:clamp(20px,2.6vw,28px);line-height:1.35;font-weight:700;color:#fff;padding:0}
.cta-inner h2::before{display:none}
.cta-inner p{margin:0;color:rgba(255,255,255,.78);font-size:15px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;position:relative;z-index:1}
.btn-clay{background:var(--clay);color:#fff;border-radius:var(--r-pill);padding:13px 26px;font-size:15px}
.btn-clay:hover{background:#C94E2F;color:#fff;transform:translateY(-1px)}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);border-radius:var(--r-pill);padding:12px 24px;font-size:15px}
.btn-line:hover{background:rgba(255,255,255,.12);color:#fff}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  background:var(--clay);color:#fff;border-radius:var(--r-pill);
  padding:14px 24px;font-size:15px;font-weight:700;
  box-shadow:0 14px 30px -14px rgba(226,96,63,.85);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr),background var(--tr);
  display:inline-flex;align-items:center;gap:10px;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:#C94E2F;color:#fff}

/* 移动底部 Tab */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:890;
  background:rgba(255,255,255,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:flex;align-items:stretch}
.tab-item{
  flex:1 1 0;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--t3);padding:8px 4px;touch-action:manipulation;
}
.tab-item i{font-size:22px}
.tab-item.is-active{color:var(--ink);font-weight:700}
.tab-item:hover{color:var(--ink)}

/* 页脚 */
.site-footer{background:var(--ink-dark);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:16px}
.footer-grid{row-gap:32px}
.footer-brand{display:flex;align-items:baseline;gap:8px;margin-bottom:14px}
.footer-brand .brand-mark{background:#fff;color:var(--ink-dark)}
.footer-brand .brand-name{color:#fff;font-size:19px;font-weight:700}
.footer-brand .brand-sub{color:rgba(255,255,255,.6);font-size:12px;letter-spacing:.14em}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:40ch}
.footer-title{font-size:13px;letter-spacing:.10em;color:#fff;font-weight:700;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:var(--clay)}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
.footer-contact i{color:var(--amber);margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  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:1024px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-cta{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:36px}
  .toc{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .cta-inner{grid-template-columns:1fr;padding:32px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:768px){
  body{font-size:16px;padding-bottom:76px}
  .container{padding:0 18px}
  .site-header{position:sticky}
  .nav-inner{height:56px;gap:14px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:11px;letter-spacing:.10em}
  .breadcrumb{padding-top:18px;font-size:13px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-head{padding:16px 0 22px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{margin-top:1.7em}
  .article-layout{padding-top:28px}
  .card-grid{grid-template-columns:1fr;gap:16px}
  .related{padding-top:44px;margin-top:36px}
  .cta-band{padding:40px 0 48px}
  .cta-inner{padding:26px 20px;border-radius:16px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%;justify-content:center}
  .tabbar{display:block}
  .float-cta{
    right:16px;left:16px;bottom:calc(76px + env(safe-area-inset-bottom));
    width:calc(100% - 32px);height:48px;justify-content:center;padding:0;font-size:15px;
  }
  .site-footer{padding:48px 0 24px}
  .footer-about{max-width:none}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .article-title{font-size:26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .entry-links .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .card:hover{transform:none}
  .btn-primary:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#0F5B52;
  --brand-dark:#0A3F39;
  --accent:#E2603F;
  --accent-dark:#C64E30;
  --amber:#F2C14E;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --soft:#EFEAE1;
  --border:#E3DED4;
  --text:#17201E;
  --text-2:#5E6A67;
  --text-3:#9AA3A0;
  --r-card:16px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 14px 32px -14px rgba(15,91,82,.28);
  --nav-h:68px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(226,96,63,.4);outline-offset:2px;border-radius:8px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:800;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(23,32,30,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h);}
.brand{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;letter-spacing:0;
}
.brand-name{font-size:19px;font-weight:700;color:var(--text);}
.brand-sub{font-size:12px;letter-spacing:.06em;color:var(--accent);font-weight:600;align-self:center;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:9px 15px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
}
.nav-link:hover{background:var(--soft);color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:-19px;height:3px;border-radius:2px;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid var(--border);}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--brand);transition:transform var(--ease),opacity var(--ease);}
body.drawer-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.drawer-open .nav-toggle span:nth-child(2){opacity:0;}
body.drawer-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-drawer{display:none;}
body.drawer-open{overflow:hidden;}
body.drawer-open .nav-drawer{display:block;}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:14px 28px;font-size:16px;font-weight:600;
  border:1px solid transparent;line-height:1.2;cursor:pointer;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn i{font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:rgba(15,91,82,.06);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--soft);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-ghost{color:var(--brand);padding:10px 14px;}
.btn-ghost:hover{background:rgba(15,91,82,.08);}
.btn-sm{padding:10px 20px;font-size:14px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  background:rgba(15,91,82,.08);color:var(--brand);
}
.badge-accent{background:rgba(226,96,63,.12);color:var(--accent);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;color:#fff;padding:64px 0 60px;
  background-image:linear-gradient(135deg,rgba(10,63,57,.9),rgba(15,91,82,.8)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:20px;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#fff;}
.page-hero h1{font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;max-width:860px;}
.page-lead{margin-top:18px;max-width:760px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.86);}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  border:1px solid rgba(255,255,255,.32);font-size:13px;color:rgba(255,255,255,.9);
}
.hero-tag i{color:var(--amber);font-size:12px;}

/* ---------- 主体布局 ---------- */
.main-section{padding:72px 0 88px;}
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px;align-items:start;}
.side-panel{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);}
.side-title{font-size:12px;letter-spacing:.06em;font-weight:700;color:var(--text-3);margin-bottom:12px;}
.side-nav a{
  display:block;padding:9px 12px;border-radius:10px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;
}
.side-nav a:hover{background:var(--soft);color:var(--brand);}
.side-nav a.is-current{color:var(--brand);font-weight:600;background:rgba(15,91,82,.07);border-left-color:var(--accent);}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:15px;color:var(--text-2);border-bottom:1px dashed var(--border);
}
.side-links li:last-child a{border-bottom:0;padding-bottom:0;}
.side-links a:hover{color:var(--accent);}
.side-links i{font-size:12px;color:var(--text-3);}
.side-links a:hover i{color:var(--accent);}

.content-body{min-width:0;}
.block{margin-bottom:68px;scroll-margin-top:88px;}
.block:last-child{margin-bottom:0;}
.sec-title{
  display:flex;align-items:center;gap:12px;font-size:clamp(22px,3vw,32px);line-height:1.3;
}
.sec-title::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--brand);flex:0 0 auto;}
.block-intro{margin-top:16px;max-width:820px;font-size:16px;color:var(--text-2);line-height:1.8;}

/* ---------- 条目卡片 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.entry-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,91,82,.3);}
.entry-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(15,91,82,.08);}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.entry-card:hover .entry-media img{transform:scale(1.04);}
.entry-body{display:flex;flex-direction:column;gap:14px;flex:1;padding:24px;}
.entry-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.entry-no{
  display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:24px;padding:0 9px;
  border-radius:var(--r-badge);background:rgba(226,96,63,.12);color:var(--accent);
  font-size:12px;font-weight:700;letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.entry-title{font-size:20px;font-weight:600;line-height:1.4;}
.entry-desc{margin:0;font-size:15px;line-height:1.75;color:var(--text-2);}
.entry-points li{position:relative;padding-left:16px;font-size:15px;line-height:1.8;color:var(--text-2);}
.entry-points li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand);}
.entry-foot{margin-top:auto;padding-top:8px;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);}
.text-link i{font-size:12px;transition:transform var(--ease);}
.text-link:hover{color:var(--accent);}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 数据与引用 ---------- */
.stats-band{background:var(--brand-dark);border-radius:20px;padding:40px;color:#fff;}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--amber);line-height:1.1;}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72);}
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px;}
.quote-card{
  background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);
  border-radius:var(--r-img);padding:22px 24px;box-shadow:var(--sh-1);
}
.quote-text{margin:0;font-size:16px;line-height:1.8;color:var(--text);}
.quote-from{margin-top:12px;font-size:14px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin-top:24px;}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:rgba(15,91,82,.35);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;line-height:1.5;text-align:left;color:var(--text);
}
.faq-q i{flex:0 0 auto;color:var(--accent);font-size:14px;transition:transform .25s ease;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  border-radius:20px;padding:48px 40px;color:#fff;
}
.cta-band h2{font-size:clamp(22px,3vw,30px);color:#fff;}
.cta-band p{margin:10px 0 0;max-width:600px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;}
.footer-col{padding-bottom:32px;}
.footer-brand{display:flex;align-items:center;gap:8px;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:#fff;color:var(--brand-dark);}
.footer-brand .brand-name{color:#fff;font-size:19px;font-weight:700;}
.footer-brand .brand-sub{color:var(--amber);}
.footer-about{margin:0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:14px;}
.footer-links a{display:block;padding:6px 0;font-size:15px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--accent);}
.footer-contact li{display:flex;gap:10px;padding:6px 0;font-size:15px;color:rgba(255,255,255,.7);line-height:1.7;}
.footer-contact i{color:var(--amber);margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:16px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 浮动件 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:600;
  box-shadow:0 14px 30px -12px rgba(226,96,63,.6);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{background:var(--accent-dark);}
.to-top{
  position:fixed;left:24px;bottom:24px;z-index:900;display:none;
  width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--border);
  color:var(--brand);box-shadow:var(--sh-1);align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;}

/* ---------- 移动底栏 ---------- */
.mobile-tab{display:none;}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:56px;font-size:11px;color:var(--text-3);
}
.mobile-tab i{font-size:20px;}
.mobile-tab a.is-active{color:var(--brand);font-weight:700;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .main-section{padding:56px 0 72px;}
  .layout{grid-template-columns:1fr;gap:28px;}
  .side-panel{
    position:static;flex-direction:row;overflow-x:auto;gap:16px;
    padding-bottom:6px;-webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .side-panel::-webkit-scrollbar{display:none;}
  .side-panel .side-card{flex:0 0 auto;min-width:290px;}
  .stats-band{padding:32px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .cta-band{padding:40px 32px;}
}
@media (max-width:900px){
  :root{--nav-h:56px;}
  .nav-links{display:none;}
  .nav-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .nav-drawer{
    position:fixed;top:56px;left:0;right:0;bottom:0;z-index:850;
    background:#fff;padding:20px 18px 40px;overflow-y:auto;
  }
  .nav-drawer a{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:15px 18px;margin-bottom:12px;border:1px solid var(--border);border-radius:12px;
    font-size:16px;color:var(--text);
  }
  .nav-drawer a.is-active{color:var(--brand);font-weight:700;border-color:rgba(15,91,82,.35);background:rgba(15,91,82,.06);}
  .nav-drawer .drawer-cta{margin-top:8px;background:var(--brand);color:#fff;border-color:var(--brand);justify-content:center;}
  body{padding-bottom:calc(78px + env(safe-area-inset-bottom));}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:880;
    background:#fff;border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .float-cta{
    left:16px;right:16px;bottom:calc(88px + env(safe-area-inset-bottom));
    width:auto;justify-content:center;height:48px;padding:0 20px;
  }
  .to-top{display:inline-flex;left:16px;bottom:calc(88px + env(safe-area-inset-bottom));}
  .page-hero{padding:40px 0 44px;}
  .entry-grid{grid-template-columns:1fr;}
  .quote-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  body{font-size:16px;}
  .main-section{padding:48px 0 64px;}
  .block{margin-bottom:52px;}
  .page-lead{font-size:16px;}
  .entry-body{padding:20px;}
  .entry-title{font-size:18px;}
  .faq-q{padding:18px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-band{padding:32px 22px;}
  .stats-band{padding:26px 22px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .entry-card:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0F5B52;
  --ink-deep:#0A3F39;
  --orange:#E2603F;
  --amber:#F2C14E;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --line-soft:#EFEAE1;
  --text:#17201E;
  --text-2:#5E6A67;
  --text-3:#9AA3A0;
  --border:#E3DED4;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 14px 32px -14px rgba(15,91,82,.28);
  --tr:180ms ease;
  --sp-section:96px;
}

*,*::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","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--orange)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(226,96,63,.45);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:1200}
.skip-link:focus{left:0;color:#fff}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;
  border-radius:var(--r-pill);border:1px solid transparent;cursor:pointer;
  transition:background var(--tr),color var(--tr),box-shadow var(--tr),transform var(--tr),border-color var(--tr);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{background:#fff;color:var(--ink);border-color:rgba(15,91,82,.32)}
.btn-outline:hover{background:rgba(15,91,82,.06);color:var(--ink);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:transparent;padding:12px 16px}
.btn-ghost:hover{background:rgba(15,91,82,.08);color:var(--ink)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn:disabled{opacity:.4;cursor:default}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:800;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -16px rgba(15,91,82,.45)}
.header-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:700;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:19px;font-weight:700;color:var(--ink-deep);letter-spacing:.01em}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--text-3);margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
}
.nav-link:hover{color:var(--ink);background:rgba(15,91,82,.06)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:3px;background:var(--orange);
}
.header-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:18px;cursor:pointer;
}
.menu-toggle:hover{background:rgba(15,91,82,.06)}

.drawer-mask{
  position:fixed;inset:0;background:rgba(10,63,57,.42);opacity:0;pointer-events:none;
  transition:opacity var(--tr);z-index:950;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;width:min(84vw,330px);height:100%;
  background:#fff;z-index:960;padding:24px 22px;
  transform:translateX(102%);transition:transform 240ms ease;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text-2);cursor:pointer}
.drawer-link{display:block;padding:14px 14px;border-radius:12px;color:var(--text-2);font-size:16px}
.drawer-link:hover{background:var(--line-soft);color:var(--ink)}
.drawer-link.is-active{background:rgba(15,91,82,.08);color:var(--ink);font-weight:600}
.drawer-cta{margin-top:18px}

/* ---------- 页头 banner ---------- */
.page-hero{
  position:relative;color:#fff;padding:60px 0 56px;
  background-image:linear-gradient(180deg,rgba(10,63,57,.86),rgba(10,63,57,.78)),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero-arch{
  position:absolute;right:5%;top:0;width:220px;height:100%;border:1px solid rgba(255,255,255,.12);
  border-bottom:none;border-radius:220px 220px 0 0;pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:var(--amber)}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.breadcrumb .current{color:#fff}
.page-hero h1{
  font-size:clamp(28px,4.4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em;max-width:900px;
}
.hero-lead{
  margin-top:18px;max-width:720px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);
}
.hero-meta{
  margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;
}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);background:rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.16);
}
.hero-chip i{color:var(--amber)}

/* ---------- 主体两栏 ---------- */
.page-main{padding:56px 0 var(--sp-section)}
.main-grid > .cell{padding-left:14px;padding-right:14px}
.main-grid{margin-left:-14px;margin-right:-14px}

.side-inner{position:sticky;top:96px}
.toc-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.toc-title{font-size:12px;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px}
.toc-list li{margin-bottom:4px}
.toc-list a{
  display:flex;gap:10px;align-items:baseline;padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);line-height:1.5;
}
.toc-list a:hover{background:var(--line-soft);color:var(--ink)}
.toc-list a .toc-num{color:var(--orange);font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
.toc-related{margin-top:22px;padding-top:20px;border-top:1px solid var(--line-soft)}
.toc-related .toc-title{margin-bottom:12px}
.related-link{
  display:flex;align-items:center;gap:8px;padding:10px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);
}
.related-link:hover{background:var(--line-soft);color:var(--ink)}
.related-link i{color:var(--ink);font-size:12px}
.related-link.is-current{background:rgba(15,91,82,.08);color:var(--ink);font-weight:600}

/* ---------- 内容区块 ---------- */
.intro-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);margin-bottom:32px;
}
.intro-card h2{font-size:20px;font-weight:700;color:var(--ink-deep);margin-bottom:10px}
.intro-card p{color:var(--text-2);font-size:16px;line-height:1.85}
.intro-list{margin-top:16px}
.intro-list li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:6px;
}
.intro-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ink)}

.feature-block{
  padding:44px 0;border-top:1px solid var(--line-soft);scroll-margin-top:96px;
}
.feature-block:first-of-type{border-top:none;padding-top:8px}
.block-head{display:flex;align-items:baseline;gap:16px;margin-bottom:14px}
.block-index{
  font-size:30px;font-weight:700;color:var(--orange);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.block-title{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--ink-deep);line-height:1.35}
.block-lead{color:var(--text-2);font-size:16px;line-height:1.85;max-width:780px;margin-bottom:26px}

.block-row{margin-bottom:0}
.block-row > .cell{padding-left:14px;padding-right:14px}
.block-row{margin-left:-14px;margin-right:-14px}
.block-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--border);box-shadow:var(--sh-1);
}
.media-note{font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.7}

.panel{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);height:100%;
}
.mini-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:10px}
.panel p{font-size:15px;line-height:1.85;color:var(--text-2)}
.panel + .panel{margin-top:20px}
.point-list{margin-top:14px}
.point-list li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.8;color:var(--text-2);margin-bottom:8px;
}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--ink)}
.point-list li:last-child{margin-bottom:0}

/* ---------- 数据条 ---------- */
.data-band{
  margin:56px 0;background:var(--ink-deep);border-radius:20px;padding:34px 28px;color:#fff;
  position:relative;overflow:hidden;
}
.data-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;border-radius:50%;
  border:1px solid rgba(255,255,255,.12);
}
.data-band .band-title{font-size:18px;font-weight:600;color:#fff;margin-bottom:22px}
.data-grid{margin-left:-12px;margin-right:-12px}
.data-grid > .cell{padding-left:12px;padding-right:12px;margin-bottom:16px}
.data-item{border-left:2px solid rgba(255,255,255,.2);padding-left:14px}
.data-num{font-size:30px;font-weight:700;color:var(--amber);line-height:1.1;font-variant-numeric:tabular-nums}
.data-label{font-size:13px;color:rgba(255,255,255,.72);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-section{padding-top:8px}
.section-head{margin-bottom:26px}
.section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700;color:var(--ink-deep);line-height:1.3}
.section-head p{margin-top:10px;color:var(--text-2);font-size:16px;max-width:720px;line-height:1.8}
.faq-list{max-width:820px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  margin-bottom:12px;box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr);
}
.faq-item:hover{border-color:rgba(15,91,82,.3)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--border);
  display:grid;place-items:center;color:var(--ink);font-size:13px;transition:transform var(--tr),background var(--tr),color var(--tr);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--orange);border-color:var(--orange);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:56px;background:var(--ink);color:#fff;border-radius:20px;padding:40px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-40px;top:-60px;width:200px;height:200px;border-radius:50%;
  background:rgba(255,255,255,.06);
}
.cta-text{position:relative;max-width:640px}
.cta-text h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:#fff}
.cta-text p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.82)}
.cta-band .btn{position:relative;background:#fff;color:var(--ink)}
.cta-band .btn:hover{background:var(--amber);color:var(--ink-deep)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:900;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity var(--tr),transform var(--tr);
  box-shadow:0 14px 28px -12px rgba(10,63,57,.5);
}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:none}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:850;display:none;
  background:#fff;border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11px;color:var(--text-3);
}
.tab-item i{font-size:19px}
.tab-item.is-active{color:var(--ink);font-weight:700}
.tab-item:hover{color:var(--ink)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.78);padding:64px 0 26px;margin-top:0}
.footer-grid{margin-left:-14px;margin-right:-14px}
.footer-grid > .cell{padding-left:14px;padding-right:14px}
.footer-col{margin-bottom:28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand .brand-name{color:#fff;font-size:19px;font-weight:700}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);font-size:11px;letter-spacing:.14em}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
.footer-links a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:var(--orange)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.7;padding:6px 0;color:rgba(255,255,255,.68)}
.footer-contact i{color:var(--orange);margin-top:4px;font-size:13px}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sp-section:72px}
  .container{padding:0 24px}
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .menu-toggle{display:inline-flex}
  .side-inner{position:static}
  .toc-card{padding:18px;margin-bottom:26px}
  .toc-list{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-bottom:4px}
  .toc-list::-webkit-scrollbar{display:none}
  .toc-list li{flex:0 0 auto;margin:0}
  .toc-list a{white-space:nowrap;background:var(--line-soft);padding:8px 14px;border-radius:var(--r-pill)}
  .toc-related{margin-top:16px;padding-top:16px}
  .related-link{padding:8px 10px}
  .page-main{padding-top:36px}
}

@media (max-width:768px){
  body{font-size:16px;padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .container{padding:0 18px}
  .header-inner{height:56px}
  .brand-name{font-size:17px}
  .brand-mark{width:30px;height:30px;font-size:16px}
  .mobile-tabbar{display:flex}
  .float-cta{left:16px;right:16px;bottom:calc(72px + env(safe-area-inset-bottom));justify-content:center}
  .page-hero{padding:40px 0 38px}
  .hero-lead{font-size:15px}
  .page-main{padding:28px 0 56px}
  .feature-block{padding:32px 0}
  .block-head{gap:12px}
  .block-index{font-size:24px}
  .panel{padding:20px}
  .data-band{margin:40px 0;padding:26px 20px;border-radius:16px}
  .data-num{font-size:26px}
  .faq-q{font-size:16px;padding:18px}
  .faq-a-inner{padding:0 18px 18px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .cta-band .btn{width:100%}
  .site-footer{padding:48px 0 22px}
}

@media (max-width:520px){
  .block-media img{aspect-ratio:16/9}
  .hero-chip{font-size:12px;padding:6px 12px}
  .footer-bottom{flex-direction:column}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .btn:hover{transform:none}
}