/* roulang page: index */
/* ============================================================
   1. 设计变量
   ============================================================ */
:root{
  --primary:#2C6E9B;
  --primary-dark:#1E4E70;
  --primary-light:#E8F1F8;
  --accent:#E4773F;
  --accent-dark:#CC6533;
  --teal:#4E9E8F;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --text:#1F2733;
  --muted:#5A6675;
  --placeholder:#9AA4B2;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(31,45,61,.04), 0 12px 32px rgba(31,45,61,.08);
  --sh-2:0 6px 12px rgba(31,45,61,.06), 0 20px 48px rgba(31,45,61,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --sec-pad:96px;
}

/* ============================================================
   2. 基础 reset
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  font-family:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto;border-radius:var(--r-img);object-fit:cover}
a{color:var(--primary);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--primary-dark)}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}
::selection{background:var(--primary-light);color:var(--primary-dark)}

/* ============================================================
   3. 容器与区块节奏
   ============================================================ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
section{position:relative}
.section{padding:var(--sec-pad) 0}
.section-alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.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;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--primary-light);color:var(--primary-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.eyebrow.accent{background:#FDEDE4;color:var(--accent-dark)}
.section-head h2{
  margin-top:16px;
  font-size:clamp(24px,2.4vw,31px);
  line-height:1.4;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px;max-width:680px}
.section-head.center p{margin-left:auto;margin-right:auto}
.hl{color:var(--primary)}

/* ============================================================
   4. 按钮 / 徽章 / 标签
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;white-space:nowrap;
  transition:background .22s var(--ease), color .22s var(--ease),
             border-color .22s var(--ease), box-shadow .22s var(--ease),
             transform .22s var(--ease);
}
.btn svg{width:16px;height:16px;flex:0 0 16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(44,110,155,.24)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(30,78,112,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(30,78,112,.24)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(228,119,63,.26)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-quiet{background:transparent;color:var(--primary);padding:8px 0}
.btn-quiet::after{content:"";position:absolute}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none !important;box-shadow:none}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--primary);
  position:relative;
}
.link-arrow svg{width:15px;height:15px;transition:transform .22s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow::after{
  content:"";position:absolute;left:0;right:22px;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1)}

.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.badge-soft{background:var(--primary-light);color:var(--primary-dark)}
.badge-accent{background:var(--accent);color:#fff}
.badge-teal{background:#E6F2F0;color:#35786C}
.tag{
  display:inline-block;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--muted);
  font-size:13px;transition:all .22s var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* ============================================================
   5. 浮动 Dock 导航
   ============================================================ */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;justify-content:center;padding:0 16px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:100%;max-width:1080px;
  display:flex;align-items:center;gap:14px;
  padding:11px 14px 11px 18px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:0 2px 4px rgba(31,45,61,.04), 0 12px 32px rgba(31,45,61,.10);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:padding .22s var(--ease), box-shadow .22s var(--ease), max-width .22s var(--ease);
}
.dock.is-scrolled{
  padding:7px 14px 7px 18px;
  box-shadow:0 6px 12px rgba(31,45,61,.06), 0 20px 48px rgba(31,45,61,.14);
  max-width:1020px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover .brand-name{color:var(--primary)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;color:var(--primary);transition:transform .3s var(--ease)}
.brand:hover .brand-mark{transform:translateY(-2px)}
.brand-name{
  font-size:16.5px;font-weight:700;letter-spacing:.01em;
  color:var(--primary-dark);white-space:nowrap;
  transition:color .22s var(--ease);
}
.dock-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.dock-nav a{
  padding:8px 15px;font-size:14.5px;font-weight:500;
  color:var(--muted);border-radius:var(--r-pill);
  transition:color .2s var(--ease), background .2s var(--ease);
}
.dock-nav a:hover{color:var(--primary);background:var(--primary-light)}
.dock-nav a.active{color:var(--primary-dark);background:var(--primary-light);font-weight:600}
.dock-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:var(--r-pill);
  color:var(--muted);border:1px solid transparent;
  transition:all .22s var(--ease);
}
.icon-btn:hover{color:var(--primary);background:var(--primary-light);border-color:var(--primary-light)}
.icon-btn svg{width:18px;height:18px}
.dock-actions .btn{padding:10px 20px;font-size:14.5px}
.dock-burger{display:none}
.dock-burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;transition:transform .22s var(--ease), opacity .22s var(--ease)}
.dock-burger span + span{margin-top:4px}
.dock-burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.dock-burger.is-open span:nth-child(2){opacity:0}
.dock-burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.dock-mobile{
  position:fixed;top:88px;left:16px;right:16px;z-index:99;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--sh-2);padding:12px;
  display:flex;flex-direction:column;gap:4px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.dock-mobile.open{opacity:1;visibility:visible;transform:translateY(0)}
.dock-mobile a{
  padding:12px 16px;border-radius:12px;font-size:15px;color:var(--text);font-weight:500;
}
.dock-mobile a:hover{background:var(--primary-light);color:var(--primary-dark)}
.dock-mobile a.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600}
.dock-mobile .btn{margin-top:6px;color:#fff}
.dock-overlay{
  position:fixed;inset:0;z-index:98;background:rgba(31,45,61,.35);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease), visibility .22s;
}
.dock-overlay.open{opacity:1;visibility:visible}

/* ============================================================
   6. Hero
   ============================================================ */
.hero{
  padding:152px 0 92px;
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(44,110,155,.10), transparent 70%),
    linear-gradient(180deg, #FFFFFF 0%, var(--bg) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(44,110,155,.045) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(44,110,155,.045) 1px, transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(circle at 50% 30%, #000 0%, transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%, #000 0%, transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4vw,44px);
  line-height:1.28;font-weight:700;letter-spacing:-.015em;
}
.hero-sub{margin-top:18px;font-size:17.5px;color:var(--muted);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:34px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--muted)}
.hero-points svg{width:16px;height:16px;color:var(--teal);flex:0 0 16px}

.hero-visual{position:relative;min-height:400px}
.hero-back{
  width:100%;height:400px;object-fit:cover;
  border-radius:18px;box-shadow:var(--sh-1);
}
.hero-card{
  position:absolute;left:22px;bottom:22px;
  display:flex;align-items:center;gap:12px;
  width:min(300px,88%);
  padding:14px;border-radius:16px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
.hero-card img{width:56px;height:56px;flex:0 0 56px;border-radius:12px}
.hero-card strong{display:block;font-size:14.5px;font-weight:700;color:var(--text)}
.hero-card span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}
.hero-chip{
  position:absolute;right:18px;top:18px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  box-shadow:var(--sh-1);font-size:13px;font-weight:600;color:var(--primary-dark);
}

/* ============================================================
   7. 信任条
   ============================================================ */
.trust{padding:0 0 24px}
.trust-inner{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:34px 36px;
}
.trust-item{display:flex;flex-direction:column;gap:6px}
.trust-num{
  font-size:clamp(28px,3vw,38px);font-weight:700;color:var(--primary);
  line-height:1.15;letter-spacing:-.02em;
}
.trust-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--primary-dark)}
.trust-label{font-size:13.5px;color:var(--muted)}

/* ============================================================
   8. 价值主张（非对称）
   ============================================================ */
.value-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
.value-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:26px;display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease), transform .22s var(--ease);
}
.value-main:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.value-main img{width:100%;height:236px;border-radius:var(--r-img);margin-bottom:24px}
.value-main h3{font-size:22px;font-weight:700;line-height:1.45}
.value-main p{margin-top:12px;color:var(--muted);font-size:16px}
.value-main .link-arrow{margin-top:auto;padding-top:20px}
.value-side{display:flex;flex-direction:column;gap:20px}
.value-item{
  flex:1;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease), transform .22s var(--ease);
}
.value-item:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.value-ico{
  width:40px;height:40px;border-radius:12px;background:var(--primary-light);
  color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.value-ico svg{width:20px;height:20px}
.value-item h4{font-size:17.5px;font-weight:700;line-height:1.5}
.value-item p{margin-top:8px;font-size:14.5px;color:var(--muted)}

/* ============================================================
   9. 功能分组（粘性标题 + 编号 + 两列卡）
   ============================================================ */
.feature-grid{display:grid;grid-template-columns:300px 1fr;gap:48px;align-items:start}
.feature-sticky{position:sticky;top:120px}
.feature-sticky h2{margin-top:16px;font-size:clamp(24px,2.4vw,30px);line-height:1.4;font-weight:700}
.feature-sticky p{margin-top:14px;color:var(--muted);font-size:15.5px}
.feature-sticky .btn{margin-top:24px}
.feature-cols{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.feature-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease), transform .22s var(--ease), border-color .22s var(--ease);
}
.feature-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D6E3EE}
.feature-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.feature-ico{
  width:42px;height:42px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.feature-ico svg{width:21px;height:21px}
.feature-num{font-size:13px;font-weight:700;color:var(--placeholder);letter-spacing:.08em}
.feature-card h3{font-size:18.5px;font-weight:700;line-height:1.5}
.feature-card p{margin-top:10px;font-size:14.5px;color:var(--muted);min-height:66px}
.feature-card .link-arrow{margin-top:14px;font-size:14px}
.feature-card.wide{grid-column:1 / -1}
.feature-card.accent-card{background:linear-gradient(180deg,#FFFFFF 0%, #F7FBFE 100%)}

/* ============================================================
   10. 使用场景 zigzag
   ============================================================ */
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:34px 0}
.zig + .zig{border-top:1px solid var(--line)}
.zig.reverse .zig-media{order:2}
.zig-media img{width:100%;height:300px;border-radius:var(--r-card);box-shadow:var(--sh-1)}
.zig-body .eyebrow{margin-bottom:16px}
.zig-body h3{font-size:clamp(21px,2.2vw,26px);font-weight:700;line-height:1.45}
.zig-body p{margin-top:14px;color:var(--muted);font-size:16px}
.zig-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.zig-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted)}
.zig-list svg{width:17px;height:17px;flex:0 0 17px;margin-top:4px;color:var(--teal)}
.zig-body .btn{margin-top:26px}

/* ============================================================
   11. 成功案例横向长卡
   ============================================================ */
.case-list{display:flex;flex-direction:column;gap:22px}
.case-card{
  display:grid;grid-template-columns:1fr 220px;gap:28px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease), transform .22s var(--ease);
}
.case-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.case-quote{font-size:19px;font-weight:600;line-height:1.6;color:var(--text)}
.case-meta{margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--muted)}
.case-meta .badge{font-size:12px}
.case-card img{width:220px;height:150px;border-radius:var(--r-img)}

/* ============================================================
   12. 价格
   ============================================================ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease), transform .22s var(--ease);
}
.price-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.price-card.featured{
  border:1.5px solid var(--primary);box-shadow:var(--sh-2);
  transform:translateY(-6px);
}
.price-card.featured:hover{transform:translateY(-10px)}
.price-flag{position:absolute;top:-13px;left:50%;transform:translateX(-50%)}
.price-card h3{font-size:19px;font-weight:700}
.price-desc{margin-top:8px;font-size:14px;color:var(--muted);min-height:44px}
.price-amount{margin-top:20px;display:flex;align-items:baseline;gap:6px}
.price-amount b{font-size:36px;font-weight:700;color:var(--primary-dark);letter-spacing:-.02em;line-height:1}
.price-amount span{font-size:14px;color:var(--muted)}
.price-line{height:1px;background:var(--line);margin:24px 0}
.price-list{display:flex;flex-direction:column;gap:12px;margin-bottom:26px}
.price-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);align-items:flex-start}
.price-list svg{width:16px;height:16px;flex:0 0 16px;margin-top:4px;color:var(--teal)}
.price-card .btn{margin-top:auto}

/* ============================================================
   13. 最新信息（CMS 区）
   ============================================================ */
.latest-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.latest-head h2{margin-top:16px;font-size:clamp(24px,2.4vw,30px);font-weight:700;line-height:1.4}
.latest-head p{margin-top:12px;color:var(--muted);max-width:620px;font-size:16px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);color:var(--text);
  transition:box-shadow .22s var(--ease), transform .22s var(--ease), border-color .22s var(--ease);
}
.post-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D6E3EE;color:var(--text)}
.post-thumb{position:relative;overflow:hidden;background:var(--primary-light)}
.post-thumb img{width:100%;aspect-ratio:16 / 9;height:auto;border-radius:0;transition:transform .4s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-badge{position:absolute;left:12px;top:12px}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.post-title{
  font-size:18px;font-weight:700;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.post-card:hover .post-title{color:var(--primary)}
.post-excerpt{
  margin-top:10px;font-size:14.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--placeholder);
}
.post-more{display:inline-flex;align-items:center;gap:5px;font-weight:600;color:var(--primary);font-size:13.5px}
.post-more svg{width:14px;height:14px;transition:transform .22s var(--ease)}
.post-card:hover .post-more svg{transform:translateX(4px)}

.empty-state{
  border:1.5px dashed #CBD8E4;border-radius:var(--r-card);
  background:#fff;padding:56px 28px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state svg{width:42px;height:42px;color:var(--placeholder)}
.empty-state p{color:var(--muted);font-size:15.5px}

/* ============================================================
   14. FAQ
   ============================================================ */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start}
.faq-aside h2{margin-top:16px;font-size:clamp(24px,2.4vw,30px);font-weight:700;line-height:1.4}
.faq-aside p{margin-top:14px;color:var(--muted);font-size:15.5px}
.faq-contact{
  margin-top:26px;background:var(--primary-light);border-radius:var(--r-card);
  padding:22px;border:1px solid #D6E3EE;
}
.faq-contact h3{font-size:16px;font-weight:700;color:var(--primary-dark)}
.faq-contact p{margin-top:8px;font-size:14px;color:var(--muted)}
.faq-contact .btn{margin-top:16px}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:8px 24px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 2px;font-size:17px;font-weight:600;cursor:pointer;
  list-style:none;color:var(--text);transition:color .2s var(--ease);
}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-ico{position:relative;width:20px;height:20px;flex:0 0 20px}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .18s var(--ease), opacity .18s var(--ease);
}
.faq-ico::before{left:0;top:9px;width:20px;height:2px}
.faq-ico::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] .faq-ico::after{transform:rotate(90deg);opacity:0}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-body{padding:0 2px 24px;font-size:15px;line-height:1.85;color:var(--muted);max-width:720px}

/* ============================================================
   15. 尾部 CTA
   ============================================================ */
.cta-band{padding:0 0 var(--sec-pad)}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:22px;padding:56px;
  background:linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 62%, #3C86B4 100%);
  color:#fff;display:grid;grid-template-columns:1.4fr auto;gap:36px;align-items:center;
  box-shadow:0 20px 48px rgba(30,78,112,.24);
}
.cta-inner::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.18) 0%, transparent 70%);
}
.cta-inner h2{position:relative;z-index:1;font-size:clamp(23px,2.6vw,31px);font-weight:700;line-height:1.4;color:#fff}
.cta-inner p{position:relative;z-index:1;margin-top:14px;font-size:16px;color:rgba(255,255,255,.86);max-width:620px}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-primary{background:#fff;color:var(--primary-dark);box-shadow:0 6px 18px rgba(0,0,0,.18)}
.cta-actions .btn-primary:hover{background:#F0F6FB;color:var(--primary-dark)}
.cta-actions .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}

/* ============================================================
   16. 页脚
   ============================================================ */
.site-footer{background:#F2F5F8;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand > p{font-size:14.5px;color:var(--muted);max-width:330px;line-height:1.8}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:8px}
.footer-contact li{font-size:14px;color:var(--muted)}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  font-size:13px;color:var(--placeholder);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom .container{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;width:100%}

/* ============================================================
   17. 加载占位
   ============================================================ */
.skeleton{background:linear-gradient(90deg,#EDF1F6 25%, #F6F8FB 37%, #EDF1F6 63%);background-size:400% 100%;animation:shimmer 1.4s ease infinite;border-radius:8px}
@keyframes shimmer{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ============================================================
   18. 响应式
   ============================================================ */
@media (min-width:1440px){
  :root{--container:1280px}
}
@media (max-width:1279px){
  :root{--sec-pad:80px}
}
@media (max-width:1023px){
  :root{--sec-pad:64px}
  .dock-nav{display:none}
  .dock-burger{display:inline-flex}
  .dock{max-width:100%}
  .hero{padding:132px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{min-height:320px}
  .hero-back{height:320px}
  .value-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr;gap:36px}
  .feature-sticky{position:static}
  .feature-cols{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-4px)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:44px}
}
@media (max-width:767px){
  :root{--sec-pad:48px}
  .container{padding:0 20px}
  body{font-size:16px}
  .hero{padding:118px 0 56px}
  .hero h1{font-size:clamp(26px,7.4vw,30px)}
  .hero-sub{font-size:16px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-visual{min-height:260px}
  .hero-back{height:260px}
  .hero-card{left:14px;bottom:14px;width:min(260px,90%);padding:12px}
  .trust-inner{grid-template-columns:1fr;gap:22px;padding:26px 22px;text-align:left}
  .trust{padding-bottom:0}
  .feature-cols{grid-template-columns:1fr}
  .feature-card p{min-height:0}
  .zig{grid-template-columns:1fr;gap:26px;padding:26px 0}
  .zig.reverse .zig-media{order:0}
  .zig-media img{height:220px}
  .case-card{grid-template-columns:1fr;gap:20px;padding:22px}
  .case-card img{width:100%;height:180px}
  .post-grid{grid-template-columns:1fr}
  .post-body{padding:18px}
  .latest-head{margin-bottom:28px}
  .faq-list{padding:4px 18px}
  .faq-item summary{font-size:16px;padding:18px 0}
  .cta-inner{padding:32px 22px;border-radius:18px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .site-footer{padding-top:48px}
}
@media (max-width:480px){
  .brand-name{font-size:15px}
  .dock{padding:9px 10px 9px 14px;gap:8px}
  .dock-actions .btn{padding:9px 14px;font-size:14px}
  .dock-mobile{left:12px;right:12px;top:80px}
  .btn{padding:12px 18px}
  .empty-state{padding:40px 20px}
  .case-quote{font-size:17px}
}

/* roulang page: article */
:root{
  --primary:#2C6E9B;
  --primary-deep:#1E4E70;
  --primary-light:#E8F1F8;
  --accent:#E4773F;
  --accent-deep:#C95F2A;
  --teal:#4E9E8F;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --text:#1F2733;
  --text-2:#5A6675;
  --text-3:#9AA4B2;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(31,45,61,.04), 0 12px 32px rgba(31,45,61,.08);
  --sh-2:0 6px 12px rgba(31,45,61,.06), 0 20px 48px rgba(31,45,61,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--primary-deep);}
button{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--primary-deep);line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
::selection{background:var(--primary-light);color:var(--primary-deep);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ============ 浮动 Dock 导航 ============ */
.dock{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:min(1080px,calc(100% - 40px));
  z-index:90;
  display:flex;
  align-items:center;
  gap:16px;
  padding:12px 18px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:padding .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.dock.is-scrolled{padding:8px 18px;box-shadow:var(--sh-2);background:rgba(255,255,255,.97);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--primary-deep);text-decoration:none;flex:0 0 auto;}
.brand-mark{width:30px;height:30px;color:var(--primary);flex:0 0 auto;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand:hover{color:var(--primary);}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.dock-nav a{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.dock-nav a:hover{color:var(--primary);background:var(--primary-light);}
.dock-nav a.active{color:var(--primary);background:var(--primary-light);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light);}
.dock-burger{display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.dock-burger span{display:block;width:16px;height:2px;border-radius:2px;background:currentColor;transition:transform .22s var(--ease),opacity .22s var(--ease);}
@media (max-width:1023px){
  .dock-nav{
    display:none;
    position:absolute;
    top:calc(100% + 12px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin-left:0;
    padding:14px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--sh-2);
  }
  .dock-nav.open{display:flex;}
  .dock-nav a{padding:12px 14px;font-size:15px;border-radius:12px;}
  .dock-actions{margin-left:auto;}
  .dock-burger{display:flex;}
}
@media (max-width:767px){
  .dock{width:calc(100% - 24px);padding:10px 14px;gap:10px;}
  .brand-name{font-size:15px;}
  .dock-actions .btn-primary{display:none;}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(44,110,155,.18);}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(44,110,155,.26);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--primary);color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-deep);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-2px);}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--primary);position:relative;}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--primary);transition:width .25s var(--ease);}
.text-link:hover::after{width:100%;}
.text-link svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  background:var(--primary-light);
  color:var(--primary);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
}
.badge-accent{background:var(--accent);color:#fff;}
.badge-teal{background:rgba(78,158,143,.14);color:#3B7C70;}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;
  padding:150px 0 52px;
  background-color:var(--primary-light);
  background-image:linear-gradient(180deg,rgba(245,247,250,.90) 0%,rgba(245,247,250,.97) 62%,#F5F7FA 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:18px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .now{color:var(--text-2);}
.article-head .badge{margin-bottom:4px;}
.article-head h1{
  font-size:clamp(26px,3.6vw,42px);
  font-weight:700;
  line-height:1.32;
  color:var(--primary-deep);
  margin:14px 0 20px;
  max-width:920px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--text-2);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);display:inline-block;}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-item svg{width:15px;height:15px;color:var(--primary);}

/* ============ 主体两列 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,820px) 300px;
  justify-content:center;
  gap:48px;
  align-items:start;
  padding:56px 0 88px;
}
.article-main{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:40px 48px 48px;
  min-width:0;
}
.lead-figure{margin:0 0 32px;}
.lead-figure img{width:100%;border-radius:var(--r-img);object-fit:cover;aspect-ratio:16/8;}
.lead-figure figcaption{font-size:13px;color:var(--text-3);margin-top:10px;text-align:center;}

/* ============ 正文排版 ============ */
.prose{font-size:17px;line-height:1.9;color:var(--text);word-break:break-word;}
.prose p{margin:0 0 1.2em;}
.prose h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  margin:44px 0 16px;
  padding-left:14px;
  position:relative;
  scroll-margin-top:120px;
}
.prose h2::before{content:"";position:absolute;left:0;top:.3em;width:3px;height:.85em;border-radius:2px;background:var(--primary);}
.prose h3{font-size:20px;font-weight:600;margin:32px 0 12px;scroll-margin-top:120px;}
.prose h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--text);}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em;}
.prose ul{list-style:none;}
.prose ul li{position:relative;padding-left:2px;margin:.45em 0;}
.prose ul li::before{content:"";position:absolute;left:-16px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--primary);}
.prose ol{list-style:decimal;}
.prose ol li{margin:.45em 0;padding-left:2px;}
.prose blockquote{
  margin:26px 0;
  padding:18px 22px;
  background:var(--primary-light);
  border-left:3px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--primary-deep);
  font-size:16.5px;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--r-img);margin:26px auto;max-width:100%;height:auto;}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--primary-deep);}
.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.prose thead th{background:#F0F3F7;text-align:left;font-weight:600;color:var(--primary-deep);padding:12px 14px;border-bottom:1px solid var(--line);}
.prose tbody td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text);}
.prose tbody tr:last-child td{border-bottom:0;}
.prose code{background:#EEF3F8;color:var(--primary-deep);padding:2px 6px;border-radius:6px;font-size:.92em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.prose pre{background:#22303F;color:#E8F1F8;padding:20px 22px;border-radius:var(--r-img);overflow-x:auto;margin:26px 0;font-size:14.5px;line-height:1.7;}
.prose pre code{background:none;color:inherit;padding:0;}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ============ 文末标签 / 翻页 ============ */
.article-foot{margin-top:46px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.tag-row .tag-label{font-size:13px;color:var(--text-3);letter-spacing:.04em;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--primary-light);
  color:var(--primary);
  font-size:13px;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--primary);color:#fff;}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px;}
.pager a{
  display:flex;flex-direction:column;gap:6px;
  padding:20px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  color:var(--text);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D5DFEA;color:var(--text);}
.pager .dir{font-size:12.5px;color:var(--text-3);letter-spacing:.04em;}
.pager .ttl{font-size:16px;font-weight:600;color:var(--primary-deep);line-height:1.5;}
.pager a:hover .ttl{color:var(--primary);}
.pager .next{align-items:flex-end;text-align:right;}

/* ============ 侧栏 ============ */
.sidebar{position:sticky;top:112px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;}
.side-card h3{font-size:15px;font-weight:600;color:var(--primary-deep);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);}
.toc{display:flex;flex-direction:column;max-height:340px;overflow-y:auto;}
.toc a{
  display:block;
  padding:7px 0 7px 12px;
  border-left:2px solid var(--line);
  font-size:14px;
  color:var(--text-2);
  line-height:1.6;
}
.toc a:hover,.toc a.active{color:var(--primary);border-left-color:var(--primary);}
.side-list{display:flex;flex-direction:column;gap:2px;}
.side-list a{
  display:block;
  padding:9px 0;
  font-size:14.5px;
  color:var(--text-2);
  border-bottom:1px dashed var(--line);
}
.side-list li:last-child a{border-bottom:0;}
.side-list a:hover{color:var(--primary);}
.side-help{background:var(--primary-light);border:1px solid #D3E4F1;box-shadow:none;}
.side-help h3::before{background:var(--accent);}
.side-help p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:14px;}
.side-help .btn{width:100%;}

/* ============ 空态 / 加载态 ============ */
.empty-state{
  border:1px dashed #CFD9E4;
  border-radius:var(--r-card);
  background:#FBFCFE;
  padding:64px 28px;
  text-align:center;
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;
  display:grid;place-items:center;
  border-radius:var(--r-pill);
  background:var(--primary-light);
  color:var(--primary);
}
.empty-state .empty-icon svg{width:26px;height:26px;}
.empty-state h3{font-size:20px;margin-bottom:10px;}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:22px;}
.skeleton{position:relative;overflow:hidden;background:#EDF1F6;border-radius:10px;}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.7) 50%,rgba(255,255,255,0) 100%);
  transform:translateX(-100%);
  animation:shimmer 1.4s infinite;
}
@keyframes shimmer{to{transform:translateX(100%);}}

/* ============ 相关推荐 ============ */
.related{margin-top:0;padding:0 0 20px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;}
.section-head .sub{font-size:15px;color:var(--text-2);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  color:inherit;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D5DFEA;color:inherit;}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--primary-light);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.post-card:hover .thumb img{transform:scale(1.05);}
.post-card .thumb .badge{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);}
.post-card .body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card h3{font-size:18px;line-height:1.5;color:var(--primary-deep);}
.post-card:hover h3{color:var(--primary);}
.post-card p{
  font-size:14.5px;line-height:1.7;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px;font-size:13px;color:var(--text-3);}
.post-card .foot svg{width:16px;height:16px;color:var(--primary);transition:transform .2s var(--ease);}
.post-card:hover .foot svg{transform:translateX(4px);}

/* ============ 尾部 CTA ============ */
.cta-band{
  position:relative;
  margin:0 0 88px;
  padding:52px 56px;
  border-radius:24px;
  border:1px solid #D3E4F1;
  background-color:var(--primary-light);
  background-image:linear-gradient(100deg,rgba(232,241,248,.96) 0%,rgba(232,241,248,.86) 55%,rgba(232,241,248,.6) 100%),url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center right;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:12px;}
.cta-band p{font-size:16px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:#F2F5F8;border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:18px;display:inline-flex;}
.footer-brand p{font-size:14.5px;color:var(--text-2);line-height:1.85;max-width:340px;}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text-2);}
.footer-col h4{font-size:14px;font-weight:600;color:var(--primary-deep);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0;}
.footer-bottom .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-3);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
}
@media (max-width:1023px){
  .article-hero{padding:126px 0 44px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding:40px 0 64px;}
  .sidebar{position:static;order:2;}
  .article-main{padding:32px 28px 36px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:40px 32px;}
}
@media (max-width:767px){
  .article-hero{padding:112px 0 36px;}
  .article-head h1{font-size:clamp(24px,6vw,30px);}
  .article-main{padding:24px 18px 28px;border-radius:14px;}
  .prose{font-size:16px;line-height:1.85;}
  .prose h2{font-size:22px;margin-top:34px;}
  .prose h3{font-size:18.5px;}
  .pager{grid-template-columns:1fr;}
  .pager .next{align-items:flex-start;text-align:left;}
  .related-grid{grid-template-columns:1fr;gap:18px;}
  .cta-band{padding:32px 22px;border-radius:18px;margin-bottom:64px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom .container{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .container{padding:0 20px;}
  .badge{font-size:12px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --primary:#2C6E9B;
  --primary-deep:#1E4E70;
  --primary-soft:#E8F1F8;
  --accent:#E4773F;
  --jade:#4E9E8F;
  --bg:#F5F7FA;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --text:#1F2733;
  --muted:#5A6675;
  --placeholder:#9AA4B2;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 2px 4px rgba(31,45,61,.04), 0 12px 32px rgba(31,45,61,.08);
  --shadow-2:0 6px 12px rgba(31,45,61,.06), 0 20px 48px rgba(31,45,61,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --font:-apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --container:1200px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--primary);text-decoration:none;transition:color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);}
a:hover{color:var(--primary-deep);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:1440px){ .container{max-width:1280px;} }

/* ============ 顶部 Dock 导航 ============ */
.dock{
  position:fixed;
  top:16px;
  left:50%;
  transform:translateX(-50%);
  width:calc(100% - 32px);
  max-width:1080px;
  z-index:120;
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 18px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  box-shadow:0 2px 4px rgba(31,45,61,.04), 0 14px 34px rgba(31,45,61,.10);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:padding var(--dur) var(--ease), box-shadow var(--dur) var(--ease), top var(--dur) var(--ease);
}
.dock.is-scrolled{
  top:10px;
  padding:8px 16px;
  box-shadow:0 6px 12px rgba(31,45,61,.08), 0 20px 44px rgba(31,45,61,.14);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--primary-deep);
  font-weight:700;
  letter-spacing:.01em;
  flex:0 0 auto;
}
.brand:hover{color:var(--primary);}
.brand-mark{width:28px;height:28px;color:var(--primary);flex:0 0 auto;}
.brand-name{font-size:17px;white-space:nowrap;}

.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  margin-right:auto;
}
.dock-nav a{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  color:var(--muted);
  white-space:nowrap;
  transition:color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.dock-nav a:hover{color:var(--primary);background:var(--primary-soft);}
.dock-nav a.active{color:var(--primary-deep);background:var(--primary-soft);font-weight:600;}

.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--muted);
  transition:color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft);}

.dock-burger{display:none;flex-direction:column;gap:4px;}
.dock-burger span{display:block;width:17px;height:2px;border-radius:2px;background:currentColor;transition:transform var(--dur) var(--ease), opacity var(--dur) var(--ease);}
.dock.open .dock-burger span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.dock.open .dock-burger span:nth-child(2){opacity:0;}
.dock.open .dock-burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.dock-mask{
  position:fixed;inset:0;
  background:rgba(31,39,51,.32);
  opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index:110;
}
.dock-mask.show{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(44,110,155,.22);}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(44,110,155,.28);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(44,110,155,.2);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);color:var(--primary-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:0;color:var(--primary);font-weight:600;font-size:15px;
  position:relative;
}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
  background:var(--primary);transition:width var(--dur) var(--ease);
}
.btn-link:hover::after{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 页面头 ============ */
.pagehead{
  position:relative;
  margin-top:104px;
  padding:64px 0 60px;
  background-image:linear-gradient(100deg, rgba(30,78,112,.90) 0%, rgba(44,110,155,.78) 46%, rgba(44,110,155,.42) 100%), url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-radius:24px;
  overflow:hidden;
  color:#fff;
}
.pagehead::after{
  content:"";
  position:absolute;
  right:-70px;bottom:-90px;
  width:320px;height:320px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.16), rgba(255,255,255,0) 65%);
  pointer-events:none;
}
.pagehead .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.82);margin-bottom:18px;}
.crumbs a{color:rgba(255,255,255,.92);}
.crumbs a:hover{color:#fff;text-decoration:underline;}
.crumbs .sep{opacity:.6;}
.pagehead h1{
  font-size:clamp(26px,4vw,42px);
  line-height:1.28;
  font-weight:700;
  max-width:840px;
  margin-bottom:16px;
}
.pagehead .lede{
  font-size:17px;
  line-height:1.85;
  max-width:720px;
  color:rgba(255,255,255,.9);
}
.pagehead .tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pagehead .tags span{
  display:inline-block;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-size:13px;
  letter-spacing:.04em;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3vw,31px);
  line-height:1.35;
  font-weight:700;
  color:var(--primary-deep);
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:16.5px;}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.04em;
  font-weight:600;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:var(--radius-pill);
  padding:5px 13px;
  margin-bottom:14px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D5DFEA;}

/* ============ 主内容布局 ============ */
.layout{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.anchor-nav{
  position:sticky;
  top:110px;
  padding:20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.anchor-nav h3{
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  letter-spacing:.04em;
  margin-bottom:12px;
}
.anchor-nav ul{display:flex;flex-direction:column;gap:2px;}
.anchor-nav a{
  display:block;
  padding:9px 12px;
  border-radius:8px;
  font-size:15px;
  color:var(--muted);
  border-left:3px solid transparent;
  transition:color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.anchor-nav a:hover{color:var(--primary);background:var(--primary-soft);}
.anchor-nav a.active{color:var(--primary-deep);background:var(--primary-soft);border-left-color:var(--primary);font-weight:600;}
.anchor-nav .nav-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}

/* ============ 图文交替 ============ */
.zig{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:44px;
  align-items:center;
  padding:32px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  margin-bottom:32px;
}
.zig:last-of-type{margin-bottom:0;}
.zig-media{position:relative;}
.zig-media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.zig-media .float-tag{
  position:absolute;
  left:-6px;bottom:-14px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;
  border-radius:var(--radius-pill);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  font-size:13px;
  font-weight:600;
  color:var(--primary-deep);
}
.zig-media .float-tag i{
  width:8px;height:8px;border-radius:50%;background:var(--jade);display:inline-block;
}
.zig.reverse .zig-media{order:2;}
.zig-body h2{
  font-size:clamp(21px,2.4vw,26px);
  line-height:1.4;
  color:var(--primary-deep);
  font-weight:700;
  margin-bottom:14px;
  padding-left:14px;
  position:relative;
}
.zig-body h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:3px;background:var(--primary);
}
.zig-body p{color:var(--muted);margin-bottom:16px;}
.checklist{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.checklist li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--text);}
.checklist li svg{width:20px;height:20px;flex:0 0 auto;margin-top:4px;color:var(--jade);}
.checklist li span{color:var(--muted);}

/* ============ 参数表 ============ */
.table-wrap{
  overflow-x:auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
table.spec{min-width:720px;font-size:15px;}
table.spec thead th{
  background:#F2F5F8;
  color:var(--muted);
  font-weight:600;
  font-size:14px;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.spec tbody td{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  color:var(--muted);
  vertical-align:top;
}
table.spec tbody tr:last-child td{border-bottom:none;}
table.spec tbody td:first-child{
  color:var(--primary-deep);
  font-weight:600;
  background:#FBFCFE;
  white-space:nowrap;
}
table.spec tbody tr:hover td{background:#FAFCFE;}
table.spec tbody tr:hover td:first-child{background:var(--primary-soft);}
.pill{
  display:inline-block;
  padding:3px 11px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  background:var(--primary-soft);
  color:var(--primary);
  line-height:1.6;
}
.pill.warm{background:var(--accent);color:#fff;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:36px;
}
.stat{
  padding:24px 26px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
.stat strong{
  display:block;
  font-size:34px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  margin-bottom:6px;
}
.stat span{font-size:13.5px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,320px) minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.faq-aside h2{
  font-size:clamp(23px,2.6vw,29px);
  line-height:1.4;
  color:var(--primary-deep);
  margin-bottom:14px;
}
.faq-aside p{color:var(--muted);font-size:15.5px;margin-bottom:22px;}
.faq-aside .contact-box{
  padding:20px;
  border-radius:var(--radius-card);
  background:var(--primary-soft);
  border:1px solid #D3E3F1;
  font-size:14.5px;
  color:var(--primary-deep);
  line-height:1.8;
}
.faq-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.faq-list details{border-bottom:1px solid var(--line);}
.faq-list details:last-child{border-bottom:none;}
.faq-list summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary:hover{color:var(--primary);background:#FBFCFE;}
.faq-list summary::after{
  content:"+";
  font-size:20px;
  font-weight:400;
  color:var(--primary);
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform var(--dur) var(--ease);
}
.faq-list details[open] summary{color:var(--primary-deep);}
.faq-list details[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-list .answer{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ============ CTA ============ */
.cta-band{
  margin:0 auto;
  padding:56px 48px;
  border-radius:24px;
  background-image:linear-gradient(115deg, rgba(30,78,112,.94) 0%, rgba(44,110,155,.86) 60%, rgba(78,158,143,.72) 100%), url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--shadow-2);
}
.cta-band h2{font-size:clamp(22px,2.6vw,29px);line-height:1.4;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:16px;max-width:560px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-primary{background:var(--accent);box-shadow:0 8px 22px rgba(228,119,63,.34);}
.cta-band .btn-primary:hover{background:#CF6631;}
.cta-band .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.2);color:#fff;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;
  background:#F2F5F8;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding:64px 20px 44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--muted);max-width:330px;margin-bottom:18px;}
.footer-contact li{font-size:14px;color:var(--muted);line-height:2;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
}
.footer-bottom .container{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--placeholder);
}

/* ============ 空态 / 加载态 ============ */
.empty-state{
  border:1px dashed #C9D6E3;
  border-radius:var(--radius-card);
  padding:48px 24px;
  text-align:center;
  background:#FBFCFE;
}
.empty-state svg{width:38px;height:38px;color:var(--placeholder);margin:0 auto 14px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.skeleton{
  border-radius:12px;
  background:linear-gradient(90deg,#EDF1F6 25%,#F6F8FB 37%,#EDF1F6 63%);
  background-size:400% 100%;
  animation:shimmer 1.4s ease-in-out infinite;
}
@keyframes shimmer{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .layout{grid-template-columns:210px minmax(0,1fr);gap:36px;}
}
@media (max-width:1023px){
  .dock-nav{
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    position:absolute;
    top:calc(100% + 12px);
    left:0;right:0;
    margin:0;
    padding:12px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-2);
  }
  .dock.open .dock-nav{display:flex;}
  .dock-nav a{padding:12px 14px;border-radius:12px;font-size:15.5px;}
  .dock-burger{display:inline-flex;}
  .dock-actions .btn-primary{padding:10px 16px;font-size:14px;}

  .pagehead{margin-top:96px;padding:52px 0 48px;border-radius:20px;}
  .section{padding:64px 0;}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .anchor-nav{position:static;padding:14px;}
  .anchor-nav ul{flex-direction:row;overflow-x:auto;gap:6px;padding-bottom:4px;}
  .anchor-nav a{white-space:nowrap;border-left:none;border-bottom:2px solid transparent;}
  .anchor-nav a.active{border-left:none;border-bottom-color:var(--primary);}
  .anchor-nav .nav-foot{display:none;}
  .zig{grid-template-columns:minmax(0,1fr);gap:28px;padding:24px;}
  .zig.reverse .zig-media{order:0;}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;padding:52px 20px 36px;}
  .cta-band{padding:44px 32px;border-radius:20px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .brand-name{font-size:15.5px;}
  .dock{padding:10px 14px;gap:10px;}
  .pagehead{margin-top:88px;padding:40px 0 40px;}
  .pagehead .lede{font-size:15.5px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .zig{padding:18px;gap:22px;}
  .zig-body p{font-size:15.5px;}
  .stats{grid-template-columns:minmax(0,1fr);gap:16px;}
  .stat strong{font-size:29px;}
  .faq-list summary{padding:17px 18px;font-size:16px;}
  .faq-list .answer{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .cta-band{padding:34px 22px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-bottom .container{flex-direction:column;gap:6px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .pagehead h1{font-size:26px;}
  .btn{width:100%;}
  .dock .btn-primary{width:auto;}
  .zig-media .float-tag{left:0;bottom:-12px;font-size:12.5px;padding:7px 13px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#2C6E9B;
  --c-primary-dark:#1E4E70;
  --c-primary-light:#E8F1F8;
  --c-accent:#E4773F;
  --c-teal:#4E9E8F;
  --bg:#F5F7FA;
  --bg-soft:#F2F5F8;
  --card:#FFFFFF;
  --line:#E3E8EF;
  --text:#1F2733;
  --text-2:#5A6675;
  --text-3:#9AA4B2;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-img:12px;
  --pill:999px;
  --shadow-1:0 2px 4px rgba(31,45,61,.04), 0 12px 32px rgba(31,45,61,.08);
  --shadow-2:0 6px 12px rgba(31,45,61,.08), 0 20px 48px rgba(31,45,61,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ---------- Dock 导航 ---------- */
.dock{
  position:sticky;
  top:16px;
  z-index:80;
  width:calc(100% - 40px);
  max-width:1080px;
  margin:16px auto 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:10px 14px 10px 20px;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border:1px solid var(--line);
  border-radius:var(--pill);
  box-shadow:var(--shadow-1);
  transition:padding .22s var(--ease), box-shadow .22s var(--ease);
}
.dock.is-scrolled{
  padding-top:6px;
  padding-bottom:6px;
  box-shadow:var(--shadow-2);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-primary-dark);
  font-weight:700;
  font-size:17px;
  white-space:nowrap;
}
.brand:hover{color:var(--c-primary);}
.brand-mark{
  width:30px;
  height:30px;
  flex:0 0 30px;
  color:var(--c-primary);
}
.brand-name{letter-spacing:0;}

.dock-nav{
  display:flex;
  align-items:center;
  gap:4px;
  flex:1 1 auto;
  justify-content:center;
}
.dock-nav a{
  display:inline-block;
  padding:8px 14px;
  border-radius:var(--pill);
  font-size:14.5px;
  color:var(--text-2);
  transition:color .2s var(--ease), background-color .2s var(--ease);
}
.dock-nav a:hover{
  color:var(--c-primary);
  background:var(--c-primary-light);
}
.dock-nav a.active{
  color:var(--c-primary-dark);
  background:var(--c-primary-light);
  font-weight:600;
}

.dock-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.icon-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:#fff;
  border-radius:50%;
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{color:var(--c-primary);border-color:#c9ddee;background:var(--c-primary-light);}
.icon-btn:active{transform:translateY(1px);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:background-color .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}
.btn-primary{
  background:var(--c-primary);
  color:#fff;
  box-shadow:0 6px 16px rgba(44,110,155,.22);
}
.btn-primary:hover{
  background:var(--c-primary-dark);
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(30,78,112,.26);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(30,78,112,.2);}
.btn-ghost{
  background:#fff;
  color:var(--c-primary);
  border-color:#bcd6e8;
}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost-light{
  background:rgba(255,255,255,.12);
  color:#fff;
  border-color:rgba(255,255,255,.55);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

.dock-burger{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:40px;
  height:40px;
  padding:0 9px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
}
.dock-burger span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:var(--text-2);
  transition:transform .22s var(--ease), opacity .22s var(--ease), background-color .22s var(--ease);
}
.dock-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);background:var(--c-primary);}
.dock-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.dock-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);background:var(--c-primary);}

.dock-drawer{
  display:none;
  max-width:1080px;
  margin:10px auto 0;
  padding:14px 18px 18px;
  background:rgba(255,255,255,.98);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-1);
}
.dock-drawer.is-open{display:block;}
.dock-drawer a{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
}
.dock-drawer a:hover,.dock-drawer a.active{background:var(--c-primary-light);color:var(--c-primary-dark);}
.dock-drawer .btn{width:100%;margin-top:10px;}
.dock-mask{
  position:fixed;
  inset:0;
  z-index:70;
  background:rgba(31,39,51,.35);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s var(--ease), visibility .22s var(--ease);
}
.dock-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  margin-top:22px;
  padding:64px 0 58px;
  background-color:#eef4f9;
  background-image:linear-gradient(105deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.78) 46%, rgba(232,241,248,.62) 100%), url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:320px;
  height:320px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(78,158,143,.16), rgba(78,158,143,0) 70%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--text-2);
  margin-bottom:18px;
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  max-width:820px;
  margin-bottom:16px;
}
.page-hero .lead{
  max-width:700px;
  font-size:17px;
  color:var(--text-2);
  line-height:1.8;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:var(--pill);
  background:#fff;
  border:1px solid var(--line);
  color:var(--c-primary-dark);
  font-size:13px;
  font-weight:600;
}
.tag-warm{
  background:var(--c-accent);
  border-color:var(--c-accent);
  color:#fff;
}

/* ---------- 通用板块 ---------- */
.section{
  padding:88px 0;
}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  max-width:760px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,30px);
  margin-bottom:14px;
}
.section-head p{
  color:var(--text-2);
  font-size:16.5px;
}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-teal);
  margin-bottom:12px;
}

/* ---------- 卡片网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:#d8e6f1;
}
.card-icon{
  width:46px;
  height:46px;
  border-radius:14px;
  background:var(--c-primary-light);
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 46px;
}
.card-icon svg{width:22px;height:22px;}
.card h3{
  font-size:20px;
  font-weight:600;
}
.card p{
  color:var(--text-2);
  font-size:15.5px;
}
.card .card-link{
  margin-top:auto;
  font-size:14.5px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-primary);
}
.card .card-link svg{width:15px;height:15px;transition:transform .22s var(--ease);}
.card:hover .card-link svg{transform:translateX(4px);}

/* ---------- 图文条 ---------- */
.feature-strip{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  padding:28px;
  box-shadow:var(--shadow-1);
}
.feature-strip img{
  width:100%;
  height:100%;
  min-height:260px;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.feature-strip h3{
  font-size:22px;
  margin-bottom:12px;
}
.feature-strip p{
  color:var(--text-2);
  margin-bottom:18px;
}
.check-list{display:grid;gap:12px;}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15.5px;
  color:var(--text-2);
}
.check-list li svg{
  width:18px;
  height:18px;
  flex:0 0 18px;
  margin-top:4px;
  color:var(--c-teal);
}

/* ---------- 时间线 ---------- */
.timeline{
  position:relative;
  max-width:820px;
  padding-left:40px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:13px;
  top:10px;
  bottom:14px;
  width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%, #cfe2ef 100%);
}
.tl-item{
  position:relative;
  padding-bottom:34px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;
  left:-40px;
  top:2px;
  width:28px;
  height:28px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--c-primary);
  color:var(--c-primary-dark);
  font-size:12.5px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.tl-item h3{
  font-size:19px;
  margin-bottom:8px;
}
.tl-item p{
  color:var(--text-2);
  font-size:15.5px;
  margin-bottom:10px;
}
.tl-meta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-teal);
  background:rgba(78,158,143,.1);
  border-radius:var(--pill);
  padding:4px 12px;
  font-weight:600;
}

/* ---------- 对比表 ---------- */
.table-wrap{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
}
table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:15px;
}
thead th{
  background:#f4f7fa;
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody td{
  padding:16px 20px;
  border-bottom:1px solid #eef2f7;
  color:var(--text-2);
  vertical-align:top;
}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#fafcfe;}
tbody td:first-child{
  font-weight:600;
  color:var(--text);
  position:sticky;
  left:0;
  background:#fff;
  box-shadow:1px 0 0 #eef2f7;
}
tbody tr:hover td:first-child{background:#fafcfe;}
.table-note{
  margin-top:14px;
  font-size:13.5px;
  color:var(--text-3);
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.6fr);
  gap:40px;
  align-items:start;
}
.faq-aside{
  position:sticky;
  top:110px;
}
.faq-aside h2{
  font-size:clamp(23px,2.4vw,28px);
  margin-bottom:14px;
}
.faq-aside p{
  color:var(--text-2);
  margin-bottom:20px;
}
.faq-aside .contact-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.faq-aside .contact-card h4{
  font-size:15px;
  margin-bottom:8px;
}
.faq-aside .contact-card a{
  font-weight:600;
  font-size:15px;
}
.faq-list{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:22px 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s var(--ease), background-color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);background:#fafcfe;}
.faq-item summary .plus{
  flex:0 0 22px;
  width:22px;
  height:22px;
  position:relative;
  transition:transform .18s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
}
.faq-item summary .plus::before{left:0;top:10px;width:22px;height:2px;}
.faq-item summary .plus::after{left:10px;top:0;width:2px;height:22px;}
.faq-item[open] summary{color:var(--c-primary-dark);}
.faq-item[open] summary .plus{transform:rotate(180deg);}
.faq-item[open] summary .plus::after{opacity:0;}
.faq-body{
  padding:0 26px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary-dark) 0%, var(--c-primary) 62%, #3d7fa9 100%);
  color:#fff;
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-inner h2{
  color:#fff;
  font-size:clamp(22px,2.4vw,28px);
  margin-bottom:12px;
}
.cta-inner p{
  color:rgba(255,255,255,.82);
  max-width:560px;
  font-size:16px;
}
.cta-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}
.cta-band .btn-primary{
  background:#fff;
  color:var(--c-primary-dark);
  box-shadow:0 10px 24px rgba(0,0,0,.16);
}
.cta-band .btn-primary:hover{background:#f2f7fb;color:var(--c-primary-dark);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-soft);
  border-top:1px solid var(--line);
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-top:64px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  color:var(--text-2);
  font-size:14.5px;
  max-width:340px;
  margin-bottom:18px;
}
.footer-contact li{
  font-size:14px;
  color:var(--text-2);
  margin-bottom:6px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
  color:var(--text);
}
.footer-col li{margin-bottom:10px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .container{
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
  .footer-grid .footer-col:last-child{grid-column:span 1;}
}
@media (max-width:1023px){
  .dock{top:12px;padding:8px 12px 8px 16px;}
  .dock-nav{display:none;}
  .dock-burger{display:flex;}
  .section{padding:64px 0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .feature-strip{grid-template-columns:1fr;gap:22px;}
  .feature-strip img{min-height:220px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .dock{width:calc(100% - 24px);margin-top:12px;}
  .brand{font-size:16px;}
  .brand-mark{width:26px;height:26px;flex-basis:26px;}
  .page-hero{padding:44px 0 40px;margin-top:16px;}
  .section{padding:48px 0;}
  .card-grid{grid-template-columns:1fr;gap:16px;}
  .card{padding:20px;}
  .timeline{padding-left:34px;}
  .tl-dot{left:-34px;width:24px;height:24px;font-size:12px;}
  .timeline::before{left:11px;}
  .faq-item summary{padding:18px 20px;font-size:16px;}
  .faq-body{padding:0 20px 20px;}
  .cta-band{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-top:48px;padding-bottom:36px;}
}
@media (max-width:520px){
  .hero-tags{gap:8px;}
  .tag{font-size:12.5px;padding:5px 12px;}
  .page-hero h1{font-size:26px;}
  .btn{padding:11px 18px;font-size:14.5px;}
  .dock-actions .btn-primary{display:none;}
  .table-wrap{border-radius:12px;}
  table{font-size:14px;}
  thead th,tbody td{padding:13px 14px;}
}
@media (max-width:375px){
  .brand-name{font-size:15px;}
  .dock-actions{gap:6px;}
}