/* roulang page: index */
:root{
  --brand-600:#0F5FCB;
  --brand-700:#0B4AA8;
  --brand-500:#2C78E0;
  --brand-050:#EAF2FE;
  --brand-900:#082C63;
  --accent-500:#FF6B3D;
  --accent-600:#EB5527;
  --accent-050:#FFF1EC;
  --ok:#12B886;
  --warn:#F2A93B;
  --err:#E5484D;
  --page:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#0F1B2D;
  --ink-900:#071427;
  --ink-800:#0C1F38;
  --text:#0F1B2D;
  --text-2:#55637A;
  --text-3:#8B98AC;
  --on-dark:#F7FAFF;
  --on-dark-2:rgba(247,250,255,.72);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,45,.04),0 8px 24px -14px rgba(15,27,45,.18);
  --shadow-2:0 2px 6px rgba(15,27,45,.06),0 18px 40px -18px rgba(15,27,45,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:104px 0;}
.section--tight{padding:80px 0;}
.section--alt{background:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-700);background:var(--brand-050);
  border:1px solid rgba(15,95,203,.12);
  padding:6px 14px;border-radius:var(--r-pill);
}
.eyebrow--dark{color:#BFD8FF;background:rgba(44,120,224,.18);border-color:rgba(44,120,224,.32);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-title{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin:16px 0 0;}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600);}
.text-link .arrow{transition:transform var(--dur) var(--ease);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 10px 24px -14px rgba(235,85,39,.9);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px -16px rgba(235,85,39,.95);}
.btn-accent:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--brand-700);border-color:rgba(15,95,203,.28);}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700);border-color:var(--brand-500);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.btn:disabled,.btn.is-disabled{background:var(--brand-050);color:var(--text-3);border-color:var(--line);box-shadow:none;cursor:not-allowed;transform:none;}
.btn.is-loading{color:transparent;position:relative;pointer-events:none;}
.btn.is-loading::after{
  content:"";position:absolute;width:18px;height:18px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-700));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:-.02em;
  box-shadow:0 8px 20px -12px rgba(15,95,203,.9);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0 6px 12px;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:0;bottom:-2px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand-700);font-weight:700;}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--brand-600);
}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-actions .btn{height:44px;padding:0 22px;font-size:14px;border-radius:var(--r-pill);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;position:fixed;inset:60px 0 0 0;z-index:55;background:#fff;
  padding:16px 24px 32px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.mobile-drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;height:56px;font-size:18px;font-weight:500;
  color:var(--ink);border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.active{color:var(--brand-700);font-weight:700;}
.drawer-cta{margin-top:24px;}
body.drawer-open{overflow:hidden;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#071427 0%,#0A2D5C 46%,#0F5FCB 128%);
  color:var(--on-dark);padding:96px 0 80px;
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.24;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,20,39,.92) 0%,rgba(8,44,99,.86) 55%,rgba(15,95,203,.62) 100%);
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);line-height:1.25;font-weight:700;
  letter-spacing:-.02em;margin:20px 0 0;color:#fff;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:var(--on-dark-2);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-list li{
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:#D8E7FF;background:rgba(44,120,224,.2);
  border:1px solid rgba(120,170,255,.28);
  padding:6px 14px;border-radius:var(--r-pill);
}
.hero-visual{position:relative;}
.hero-shot{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/10;background:var(--brand-050);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.7);
}
.hero-shot img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:-24px;width:min(280px,80%);
  background:#fff;color:var(--text);border-radius:var(--r-lg);
  padding:18px 20px;box-shadow:var(--shadow-2);border:1px solid var(--line);
}
.float-card .fc-row{display:flex;gap:20px;}
.float-card .fc-num{font-size:24px;font-weight:700;color:var(--brand-700);line-height:1.2;font-variant-numeric:tabular-nums;}
.float-card .fc-label{font-size:12px;color:var(--text-3);margin-top:2px;}
.float-card .fc-note{margin-top:12px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-2);}
.status-badge{
  position:absolute;right:16px;top:16px;display:inline-flex;align-items:center;gap:8px;
  background:rgba(7,20,39,.72);color:#fff;font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(6px);
}
.status-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(18,184,134,.22);}
.trust-bar{
  position:relative;z-index:1;margin-top:72px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;flex-wrap:wrap;gap:0 28px;
}
.trust-bar li{
  position:relative;font-size:14px;color:var(--on-dark-2);padding-left:28px;line-height:2.2;
}
.trust-bar li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:14px;background:rgba(255,255,255,.28);
}
.trust-bar li:first-child{padding-left:0;}
.trust-bar li:first-child::before{display:none;}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start;}
.pain-list{display:grid;gap:14px;}
.pain-item{
  display:flex;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.pain-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(15,95,203,.24);}
.pain-num{
  flex:0 0 auto;width:42px;height:42px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);
  font-size:14px;font-weight:700;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.pain-item:hover .pain-num{background:var(--brand-600);color:#fff;}
.pain-q{font-size:17px;font-weight:600;line-height:1.5;}
.pain-a{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.75;}
.pain-side{
  background:linear-gradient(160deg,var(--ink-900),var(--brand-900));
  color:var(--on-dark);border-radius:var(--r-lg);padding:32px 28px;
  box-shadow:var(--shadow-2);
}
.pain-side h3{font-size:20px;font-weight:700;color:#fff;line-height:1.5;}
.pain-side p{margin-top:12px;font-size:15px;color:var(--on-dark-2);}
.step-line{margin-top:24px;display:grid;gap:0;}
.step-line li{
  position:relative;padding:14px 0 14px 26px;font-size:15px;color:var(--on-dark);
  border-bottom:1px dashed rgba(255,255,255,.16);
}
.step-line li:last-child{border-bottom:none;}
.step-line li::before{
  content:"";position:absolute;left:0;top:22px;width:9px;height:9px;border-radius:50%;
  background:var(--accent-500);box-shadow:0 0 0 4px rgba(255,107,61,.18);
}

/* ---------- 方案卡 ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  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:rgba(15,95,203,.22);}
.card:hover .card-title{color:var(--brand-600);}
.card:hover .arrow{transform:translateX(4px);}
.card-lg{grid-column:span 2;}
.card-media{aspect-ratio:3/2;background:var(--brand-050);position:relative;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.card-title{font-size:21px;font-weight:700;line-height:1.45;transition:color var(--dur) var(--ease);}
.card-desc{font-size:15px;color:var(--text-2);line-height:1.8;}
.point-list{display:grid;gap:10px;margin-top:2px;}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text-2);line-height:1.7;}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--brand-500);
}
.point-list--accent li::before{background:var(--accent-500);}
.card .text-link{margin-top:auto;}
.card .text-link .arrow{transition:transform var(--dur) var(--ease);}
.icon-badge{
  width:46px;height:46px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);font-size:18px;font-weight:700;
}

/* ---------- 图文交替 ---------- */
.alt-row{display:grid;grid-template-columns:repeat(2,1fr);gap:48px;align-items:center;}
.alt-row + .alt-row{margin-top:64px;}
.alt-row.reverse .alt-media{order:2;}
.alt-media{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:3/2;background:var(--brand-050);border:1px solid var(--line);}
.alt-media img{width:100%;height:100%;object-fit:cover;}
.alt-text h3{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.4;}
.alt-text p{margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.9;}
.alt-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--brand-700);
  background:var(--brand-050);border-radius:var(--r-pill);padding:6px 14px;
}

/* ---------- 数据带 ---------- */
.stats-band{
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  border-radius:20px;padding:56px 48px;color:#fff;
  box-shadow:0 30px 60px -34px rgba(11,74,168,.9);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;}
.stat{position:relative;padding:0 24px;}
.stat + .stat{border-left:1px solid rgba(255,255,255,.24);}
.stat:first-child{padding-left:0;}
.stat-num{font-size:clamp(36px,4vw,56px);font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;}
.stat-unit{font-size:16px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.85);}
.stat-desc{margin-top:10px;font-size:14px;color:rgba(255,255,255,.82);line-height:1.7;}
.stats-note{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.2);font-size:13px;color:rgba(255,255,255,.72);}

/* ---------- 最新信息 ---------- */
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.latest-head .section-head{margin-bottom:0;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(15,95,203,.22);}
.post-cover{
  position:relative;display:block;aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--brand-050),#DCE9FC);
}
.post-cover img{width:100%;height:100%;object-fit:cover;}
.post-badge{
  position:absolute;left:14px;top:14px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--brand-700);background:var(--brand-050);
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(15,95,203,.16);
}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-title{font-size:17px;font-weight:700;line-height:1.55;}
.post-title a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-title a:hover{color:var(--brand-600);}
.post-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.post-meta time{font-variant-numeric:tabular-nums;}
.post-arrow{color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state .es-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:var(--brand-050);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
}
.empty-state p{font-size:15px;color:var(--text-2);}
.empty-state .text-link{margin-top:12px;}

/* ---------- 表单 ---------- */
.contact-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start;}
.contact-text h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.35;}
.contact-text p{margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.85;}
.contact-points{margin-top:26px;display:grid;gap:14px;}
.contact-points li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);}
.contact-points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);
}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);padding:32px;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.field .req{color:var(--err);margin-left:2px;}
.input,.select,.textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:0 14px;height:44px;font-size:15px;line-height:44px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 14px) 19px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:40px;}
.input:hover,.select:hover,.textarea:hover{border-color:#CBD8EA;}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(15,95,203,.08);
}
.input:disabled,.select:disabled,.textarea:disabled{background:var(--page);color:var(--text-3);cursor:not-allowed;}
.input.has-error,.select.has-error,.textarea.has-error{border-color:var(--err);}
.error-text{display:none;margin-top:6px;font-size:14px;color:var(--err);}
.error-text.show{display:block;}
.checkbox-row{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;}
.checkbox-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-600);flex:0 0 auto;}
.checkbox-row label{font-size:14px;color:var(--text-2);line-height:1.7;}
.form-note{margin-top:14px;font-size:13px;color:var(--text-3);text-align:center;}
.form-success{
  display:none;text-align:center;padding:28px 8px;
}
.form-success.show{display:block;}
.form-success .fs-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:rgba(18,184,134,.12);color:var(--ok);
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;
}
.form-success h3{font-size:20px;font-weight:700;}
.form-success p{margin-top:10px;font-size:15px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item[open]{border-color:rgba(15,95,203,.3);box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item[open] summary{color:var(--brand-600);}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;
  transition:transform var(--dur) var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:opacity var(--dur) var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-answer{padding:0 24px 22px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- CTA 收尾 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  background:linear-gradient(135deg,var(--ink-900),var(--brand-700) 90%);
  color:#fff;padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 30px 60px -34px rgba(8,44,99,.95);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,61,.34),transparent 68%);
}
.cta-band h2{position:relative;font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.4;z-index:1;}
.cta-band p{position:relative;margin-top:12px;font-size:15px;color:var(--on-dark-2);z-index:1;}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;z-index:1;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--on-dark);padding:72px 0 0;margin-top:104px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--on-dark-2);line-height:1.85;max-width:300px;}
.footer-contact{margin-top:18px;font-size:14px;color:var(--on-dark-2);}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:var(--on-dark-2);}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-note{margin-top:20px;font-size:13px;color:rgba(247,250,255,.6);line-height:1.8;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  flex-wrap:wrap;font-size:13px;color:rgba(247,250,255,.62);
}
.footer-bottom a{color:rgba(247,250,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  :root{--container:1280px;}
}
@media (max-width:1199px){
  .hero-inner{gap:40px;}
  .nav-links{gap:18px;}
  .nav-link{font-size:14px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .mobile-drawer{display:block;}
  .header-inner{height:60px;}
  .mobile-drawer{inset:60px 0 0 0;}
  .hero{padding:72px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:48px;}
  .hero-shot{aspect-ratio:16/10;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .status-badge{top:12px;right:12px;}
  .trust-bar{margin-top:48px;gap:0 20px;}
  .pain-grid{grid-template-columns:1fr;gap:32px;}
  .solution-grid{grid-template-columns:repeat(2,1fr);}
  .card-lg{grid-column:span 2;}
  .alt-row{grid-template-columns:1fr;gap:28px;}
  .alt-row.reverse .alt-media{order:0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 8px;}
  .stat{padding:0 20px;}
  .stat:nth-child(odd){padding-left:0;}
  .stat:nth-child(3){border-left:none;}
  .stats-band{padding:44px 32px;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .contact-wrap{grid-template-columns:1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 32px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-footer{margin-top:72px;padding-top:56px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .latest-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .stats-grid{grid-template-columns:1fr;gap:28px;}
  .stat{padding:0;border-left:none!important;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.2);}
  .stat:last-child{padding-bottom:0;border-bottom:none;}
  .stats-band{padding:36px 24px;}
  .post-grid{grid-template-columns:1fr;}
  .solution-grid{grid-template-columns:1fr;}
  .card-lg{grid-column:span 1;}
  .hero-cta .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;}
  .form-card{padding:22px;}
}
@media (max-width:479px){
  .hero h1{font-size:26px;}
  .hero-sub{font-size:15px;}
  .section-title{font-size:22px;}
  .brand-text{font-size:15px;}
  .trust-bar li{font-size:13px;padding-left:18px;}
  .float-card .fc-num{font-size:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
  .card:hover,.post-card:hover,.pain-item:hover,.btn-accent:hover{transform:none;}
}

/* roulang page: article */
:root{
  --brand-600:#0F5FCB;
  --brand-700:#0B4AA8;
  --brand-500:#2C78E0;
  --brand-050:#EAF2FE;
  --brand-900:#082C63;
  --ink-deep:#061F45;
  --accent-500:#FF6B3D;
  --accent-050:#FFF1EC;
  --ok:#12B886;
  --warn:#F2A93B;
  --err:#E5484D;
  --page:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --text:#0F1B2D;
  --text-2:#55637A;
  --text-3:#8B98AC;
  --white:#F7FAFF;
  --radius-card:16px;
  --radius-sm:10px;
  --radius-img:12px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,45,.04), 0 8px 24px -14px rgba(15,27,45,.18);
  --shadow-2:0 2px 6px rgba(15,27,45,.06), 0 18px 40px -18px rgba(15,27,45,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;color:var(--text);background:var(--page);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
li{list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:0}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);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}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t) var(--ease),height var(--t) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:17px;font-weight:700;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:12px;flex:1 1 auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),
             border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -14px rgba(255,107,61,.9)}
.btn-accent:hover{background:#F0562A;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);background:var(--brand-050)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn[disabled],.btn.is-disabled{background:#EDF1F7;color:var(--text-3);border-color:var(--line);cursor:not-allowed;box-shadow:none;transform:none}
.btn.is-loading{pointer-events:none;opacity:.82}
.btn.is-loading::after{
  content:"";width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;padding:0;place-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;margin:3px auto}
.drawer{
  position:fixed;inset:0;background:#fff;z-index:120;padding:18px 16px 88px;
  transform:translateX(100%);transition:transform 240ms var(--ease);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px;line-height:1}
.drawer a.drawer-link{display:block;font-size:18px;line-height:56px;border-bottom:1px solid var(--line);color:var(--text)}
.drawer a.drawer-link.active{color:var(--brand-700);font-weight:700}
.drawer-foot{position:fixed;left:16px;right:16px;bottom:16px}
.drawer-foot .btn{width:100%}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:14px 0}
.crumb a{color:var(--text-2);transition:color var(--t) var(--ease)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:#C3CDDB}
.crumb .now{color:var(--text-3)}

/* ---------- article head ---------- */
.article-head{
  background:
    linear-gradient(180deg,rgba(8,44,99,.92),rgba(11,74,168,.86)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;padding:52px 0 48px;
}
.article-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:var(--pill);background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.26);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.article-head h1{
  font-size:clamp(26px,3.6vw,38px);line-height:1.28;margin:18px 0 0;
  max-width:880px;color:#fff;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;
  font-size:14px;color:rgba(255,255,255,.86);
}
.meta-badge{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--pill);
  background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600;
}
.meta-divider{width:1px;height:16px;background:rgba(255,255,255,.32)}
.article-head .lede{
  margin-top:18px;max-width:760px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.88);
}

/* ---------- article layout ---------- */
.article-wrap{padding:56px 0 72px}
.article-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;align-items:start}
.article-aside{position:sticky;top:96px;display:grid;gap:14px}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:20px;
}
.aside-card h3{font-size:15px;font-weight:700;margin-bottom:10px}
.aside-list{display:grid;gap:8px;font-size:14px}
.aside-list a{color:var(--text-2);display:flex;align-items:center;gap:8px;transition:color var(--t) var(--ease)}
.aside-list a::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand-500);flex:0 0 auto}
.aside-list a:hover{color:var(--brand-600)}
.aside-note{font-size:13px;color:var(--text-3);line-height:1.75;margin-top:10px}

.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:32px;
}
.article-body{max-width:800px;font-size:17px;line-height:1.9;color:#16233A}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.35;
  margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:2px;background:var(--brand-600);
}
.article-body h3{font-size:20px;font-weight:600;margin:30px 0 12px;color:var(--brand-900)}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body ul,.article-body ol{display:grid;gap:10px;padding-left:2px}
.article-body ul li{position:relative;padding-left:22px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand-500);
}
.article-body ol{counter-reset:item}
.article-body ol li{position:relative;padding-left:30px;counter-increment:item}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:.28em;width:20px;height:20px;border-radius:6px;
  background:var(--brand-050);color:var(--brand-700);font-size:12px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--brand-050);border-left:3px solid var(--brand-600);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#173656;font-size:16px;
}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(15,95,203,.32)}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.article-body img{margin:26px 0;border-radius:var(--radius-img);width:100%;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body thead th{background:var(--brand-050);color:var(--brand-900);font-weight:700}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body code{
  background:#F1F5FB;border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:15px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

.section-empty{
  display:grid;justify-items:center;gap:12px;padding:56px 24px;text-align:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.section-empty .ico{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-050);color:var(--brand-600);font-size:22px;font-weight:700;
}
.section-empty p{color:var(--text-2);font-size:15px}

.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand-600);font-size:15px;font-weight:600}
.link-arrow span{transition:transform var(--t) var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- related ---------- */
.block{padding:0 0 72px}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.block-head h2{font-size:clamp(22px,2.6vw,30px)}
.block-head p{color:var(--text-2);font-size:15px;margin-top:8px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D6E2F2}
.card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--brand-050)}
.card figure img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;font-weight:600;line-height:1.45}
.card-body p{color:var(--text-2);font-size:15px;line-height:1.78}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;color:var(--brand-600);transition:transform 180ms var(--ease);line-height:1;
}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item .faq-body{padding:0 22px 20px 24px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--brand-600),var(--brand-900));
  border-radius:20px;padding:40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);max-width:520px}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.86);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;position:relative;z-index:1}

/* ---------- form ---------- */
.form-section{padding:72px 0}
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:40px;align-items:start}
.form-copy h2{font-size:clamp(22px,2.6vw,30px)}
.form-copy p{margin-top:14px;color:var(--text-2);font-size:15px}
.form-points{display:grid;gap:12px;margin-top:22px}
.form-points li{display:flex;gap:10px;font-size:15px;color:var(--text-2)}
.form-points li::before{content:"✓";color:var(--ok);font-weight:700}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:28px}
.field{display:grid;gap:8px;margin-bottom:16px}
.field label{font-size:14px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;
  padding:11px 14px;font-size:15px;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,95,203,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err)}
.field .err-msg{display:none;font-size:13px;color:var(--err)}
.field.has-error .err-msg{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2)}
.check input{width:18px;height:18px;margin-top:3px;flex:0 0 auto}
.form-card .btn{width:100%;margin-top:6px}
.form-tip{font-size:13px;color:var(--text-3);margin-top:12px}
.form-success{
  display:none;text-align:center;padding:28px 12px;gap:12px;
}
.form-success.is-visible{display:grid;justify-items:center}
.form-success .ico{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:#E7F8F1;color:var(--ok);font-size:24px;font-weight:700}

/* ---------- footer ---------- */
.site-footer{background:linear-gradient(160deg,var(--brand-900),var(--ink-deep));color:rgba(247,250,255,.86);padding:64px 0 0;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px}
.site-footer .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(247,250,255,.72);margin-top:14px;max-width:320px}
.footer-contact{margin-top:14px;font-size:14px}
.footer-contact strong{color:#fff}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(247,250,255,.76);transition:color var(--t) var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-note{font-size:13px;line-height:1.8;color:rgba(247,250,255,.6);margin-top:14px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(247,250,255,.66);
}
.footer-bottom a{color:rgba(247,250,255,.78)}
.footer-bottom a:hover{color:#fff;text-decoration:underline}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
}
@media (max-width:1023px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:64px;justify-content:space-between}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-layout{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-head{padding:40px 0 36px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-wrap{padding:36px 0 48px}
  .panel{padding:22px 18px}
  .article-body{font-size:16.5px;line-height:1.9}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .block{padding-bottom:52px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .form-section{padding:52px 0}
  .form-card{padding:22px 18px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .brand-text{font-size:15px}
  .article-head h1{font-size:24px}
  .article-meta{gap:8px 12px;font-size:13px}
  .meta-divider{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --brand-600:#0F5FCB;
  --brand-700:#0B4AA8;
  --brand-500:#2C78E0;
  --brand-050:#EAF2FE;
  --brand-900:#082C63;
  --accent-500:#FF6B3D;
  --accent-600:#E8562A;
  --accent-050:#FFF1EC;
  --ok:#12B886;
  --warn:#F2A93B;
  --err:#E5484D;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#0F1B2D;
  --ink-2:#55637A;
  --ink-3:#8B98AC;
  --white:#F7FAFF;
  --r-card:16px;
  --r-sm:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,45,.04),0 8px 24px -14px rgba(15,27,45,.18);
  --shadow-2:0 2px 6px rgba(15,27,45,.06),0 18px 40px -18px rgba(15,27,45,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:104px;
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--brand-700)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--ink)}
p{margin:0 0 1.15em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all 200ms var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--accent-500);color:#fff;border-color:var(--accent-500);box-shadow:0 10px 22px -12px rgba(255,107,61,.75)}
.btn-accent:hover{background:var(--accent-600);border-color:var(--accent-600);color:#fff;box-shadow:0 14px 28px -12px rgba(255,107,61,.85)}
.btn-primary{background:var(--brand-600);color:#fff;border-color:var(--brand-600)}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff}
.btn-outline{background:#fff;color:var(--brand-700);border-color:#C9DBF5}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050)}
.btn-ghost-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:rgba(255,255,255,.24);color:#fff;border-color:#fff}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn[disabled],.btn.is-disabled{background:#E9EEF6;color:var(--ink-3);border-color:#E3EAF3;cursor:not-allowed;box-shadow:none}
.btn.is-loading{color:transparent;position:relative;pointer-events:none}
.btn.is-loading::after{content:"";position:absolute;width:18px;height:18px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite;left:50%;top:50%;margin:-9px 0 0 -9px}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-600)}
.link-arrow span{transition:transform 200ms var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em}
.badge-accent{background:var(--accent-050);color:#C2431B}
.badge-light{background:rgba(255,255,255,.18);color:#fff}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:.01em}
.brand:hover{color:var(--brand-700)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-900));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.brand-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;color:var(--ink-2);font-size:15px;font-weight:500;padding:6px 0;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand-600);
  transform:scaleX(0);transform-origin:left;transition:transform 200ms var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:700;padding-left:11px}
.nav-link.active::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand-600)}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-actions .btn{height:44px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 标题带 ============ */
.page-band{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(115deg,rgba(8,44,99,.94),rgba(15,95,203,.82)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  padding:56px 0 60px;min-height:44vh;display:flex;align-items:center;
}
.page-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,61,.28),transparent 68%);
}
.band-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb{margin-bottom:22px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px}
.breadcrumb li{color:rgba(255,255,255,.72)}
.breadcrumb li+li::before{content:"/";margin-right:10px;color:rgba(255,255,255,.45)}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.page-band h1{font-size:clamp(28px,3.6vw,44px);line-height:1.25;color:#fff;letter-spacing:.01em}
.band-sub{margin:18px 0 0;font-size:16.5px;color:rgba(255,255,255,.86);max-width:640px}
.band-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.band-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:28px;font-size:14px;color:rgba(255,255,255,.78)}
.band-meta strong{color:#fff;font-weight:600}

/* ============ 主布局：侧栏 + 内容 ============ */
.main-wrap{background:#fff}
.layout-side{display:grid;grid-template-columns:250px minmax(0,1fr);gap:56px;padding:72px 0 var(--sp-section)}
.side-nav{position:sticky;top:96px;align-self:start}
.side-nav-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--ink-3);margin-bottom:14px}
.side-nav ul{display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--line);padding-left:0}
.side-link{
  display:block;padding:9px 0 9px 16px;margin-left:-2px;border-left:2px solid transparent;
  font-size:14.5px;color:var(--ink-2);transition:all 200ms var(--ease);
}
.side-link:hover{color:var(--brand-600);border-left-color:#C9DBF5}
.side-link.active{color:var(--brand-700);font-weight:600;border-left-color:var(--brand-600)}
.side-card{margin-top:28px;padding:20px;background:var(--brand-050);border-radius:var(--r-card);border:1px solid #D8E6FB}
.side-card h4{font-size:15px;margin-bottom:8px;color:var(--brand-900)}
.side-card p{font-size:13.5px;line-height:1.75;color:var(--ink-2);margin-bottom:14px}
.side-card .btn{height:40px;padding:0 18px;font-size:13.5px;width:100%}

.content-col{max-width:820px}
.lead{font-size:17.5px;line-height:1.95;color:var(--ink-2)}
.content-block{padding:0 0 56px;margin-bottom:56px;border-bottom:1px solid var(--line)}
.content-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.content-block h2{
  font-size:clamp(22px,2.4vw,30px);line-height:1.35;margin-bottom:18px;
  padding-left:16px;border-left:4px solid var(--brand-600);
}
.content-block h3{font-size:19px;margin:28px 0 12px}
.content-block p{font-size:16.5px;color:var(--ink-2);line-height:1.9}
.figure{margin:28px 0}
.figure img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);background:var(--brand-050)}
.figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);text-align:center}
.check-list{display:flex;flex-direction:column;gap:12px;margin:22px 0}
.check-list li{position:relative;padding-left:30px;font-size:16px;color:var(--ink-2);line-height:1.8}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:50%;
  background:var(--brand-050);border:1.5px solid var(--brand-500);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:13px;width:6px;height:9px;
  border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);transform:rotate(40deg);
}
.step-lite{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.step-chip{
  display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg);
  border:1px solid var(--line);border-radius:var(--r-sm);font-size:14.5px;color:var(--ink-2);
}
.step-chip b{color:var(--brand-700);font-variant-numeric:tabular-nums}
.note-box{
  background:var(--brand-050);border-left:3px solid var(--brand-600);border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:18px 22px;margin:24px 0;font-size:15px;color:var(--brand-900);line-height:1.85;
}

/* ============ 数据条 ============ */
.data-strip{
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  border-radius:20px;padding:44px 40px;color:#fff;margin:0 0 var(--sp-section);
}
.data-strip h2{color:#fff;font-size:20px;margin-bottom:6px}
.data-strip .data-sub{color:rgba(255,255,255,.8);font-size:14.5px;margin-bottom:30px}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.data-item{padding:0 20px;border-left:1px solid rgba(255,255,255,.22)}
.data-item:first-child{border-left:0;padding-left:0}
.data-num{font-size:clamp(32px,3.6vw,48px);font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.data-num small{font-size:15px;font-weight:600;margin-left:4px;letter-spacing:0}
.data-desc{margin-top:10px;font-size:14px;color:rgba(255,255,255,.82);line-height:1.6}

/* ============ 提示列表 ============ */
.tips-section{padding:0 0 var(--sp-section)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-2)}
.tips-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tip-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--shadow-1);transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.tip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFE0F8}
.tip-index{font-size:13px;font-weight:700;color:var(--accent-500);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.tip-card h3{font-size:17.5px;margin:10px 0 10px}
.tip-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* ============ 对比表 ============ */
.compare-section{padding:0 0 var(--sp-section)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--shadow-1)}
table{width:100%;border-collapse:collapse;min-width:640px}
caption{text-align:left;padding:22px 24px 0;font-size:14px;color:var(--ink-3)}
th,td{padding:16px 22px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
thead th{background:var(--brand-050);color:var(--brand-900);font-weight:700;font-size:14.5px}
tbody tr:nth-child(even){background:#FAFCFF}
tbody tr:last-child td{border-bottom:0}
td strong{color:var(--ink);font-weight:600}

/* ============ FAQ ============ */
.faq-section{padding:0 0 var(--sp-section)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-img);
  box-shadow:var(--shadow-1);overflow:hidden;transition:border-color 200ms var(--ease);
}
.faq-item[open]{border-color:#C9DBF5}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
  list-style:none;transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;transition:transform 200ms var(--ease)}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-body{padding:0 22px 20px 24px;font-size:15px;color:var(--ink-2);line-height:1.9}

/* ============ 表单区 ============ */
.form-section{padding:0 0 var(--sp-section)}
.form-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:start}
.form-intro h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:16px}
.form-intro>p{font-size:16px;color:var(--ink-2)}
.form-points{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.form-points li{display:flex;gap:12px;font-size:15px;color:var(--ink-2);line-height:1.8}
.form-points li b{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--brand-050);color:var(--brand-700);
  font-size:13px;display:inline-flex;align-items:center;justify-content:center;margin-top:3px;
}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field .req{color:var(--err);margin-left:2px}
.input,select,textarea{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);font-family:inherit;
}
textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.75;resize:vertical}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-3) 50%),linear-gradient(135deg,var(--ink-3) 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 15px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.input:hover,select:hover,textarea:hover{border-color:#C9DBF5}
.input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,95,203,.14)}
.input:disabled,select:disabled,textarea:disabled{background:#F2F5FA;color:var(--ink-3);cursor:not-allowed}
.field.has-error .input,.field.has-error select,.field.has-error textarea{border-color:var(--err)}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--err)}
.field.has-error .field-error{display:block}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.checkbox input{width:16px;height:16px;margin-top:4px;flex:0 0 auto;accent-color:var(--brand-600)}
.form-card .btn{width:100%;margin-top:6px}
.form-hint{margin-top:14px;font-size:13px;color:var(--ink-3);line-height:1.7}
.form-success{display:none;text-align:center;padding:26px 8px}
.form-success.show{display:block}
.success-mark{
  width:52px;height:52px;border-radius:50%;background:rgba(18,184,134,.12);color:var(--ok);
  display:inline-flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px;
}
.form-success h3{font-size:18px;margin-bottom:8px}
.form-success p{font-size:14.5px;color:var(--ink-2)}
.form-success .btn{width:auto;margin-top:18px;height:42px;padding:0 22px}

/* ============ CTA 收尾带 ============ */
.cta-band-section{padding:0 0 var(--sp-section)}
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;color:#fff;
  background-image:linear-gradient(110deg,rgba(8,44,99,.96),rgba(11,74,168,.86)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  padding:48px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.4vw,28px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 相关分类 ============ */
.related-section{padding:0 0 var(--sp-section)}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.related-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-1);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFE0F8}
.related-card .r-icon{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);font-size:18px;font-weight:700;
}
.related-card h3{font-size:16.5px;margin-bottom:4px}
.related-card p{font-size:13.5px;color:var(--ink-3);margin:0}
.related-card .arrow{margin-left:auto;color:var(--brand-500);font-weight:700;transition:transform 200ms var(--ease)}
.related-card:hover .arrow{transform:translateX(4px)}

/* ============ 页脚 ============ */
.site-footer{background:#0B1B33;color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--brand-500),#0A2A5E)}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:320px}
.footer-contact{margin-top:14px;font-size:14px;color:rgba(255,255,255,.68)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-note{margin-top:16px;font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.5)}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:var(--max)}
}
@media (max-width:1199px){
  :root{--sp-section:88px}
  .layout-side{grid-template-columns:210px minmax(0,1fr);gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:span 3}
}
@media (max-width:991px){
  :root{--sp-section:72px}
  .header-inner{height:auto;padding:12px 0}
  .nav-toggle{display:flex}
  .nav-actions{margin-left:auto}
  .brand{font-size:16px}
  .nav-links,.nav-actions{
    display:none;width:100%;margin-left:0;flex-direction:column;align-items:stretch;gap:0;
  }
  .nav-open .nav-links,.nav-open .nav-actions{display:flex}
  .nav-links{border-top:1px solid var(--line);padding:8px 0 4px;order:3}
  .nav-actions{order:4;padding:12px 0 16px;gap:10px;border-top:1px solid var(--line)}
  .nav-link{font-size:17px;padding:14px 0;color:var(--ink)}
  .nav-link.active{padding-left:12px}
  .nav-actions .btn{width:100%;height:48px;font-size:15px}
  .layout-side{grid-template-columns:minmax(0,1fr);gap:0;padding-top:52px}
  .side-nav{position:static;margin-bottom:36px}
  .side-nav ul{border-left:0;flex-direction:row;flex-wrap:wrap;gap:8px}
  .side-link{border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 16px;margin-left:0;font-size:13.5px;background:#fff}
  .side-link.active{border-color:var(--brand-600);background:var(--brand-050)}
  .side-card{display:none}
  .content-col{max-width:none}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .data-item:nth-child(3){border-left:0;padding-left:0}
  .tips-list{grid-template-columns:1fr;gap:16px}
  .form-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:36px 28px}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  .container{padding:0 16px}
  .page-band{padding:44px 0 48px;min-height:0}
  .band-sub{font-size:15.5px}
  .band-actions .btn{width:100%}
  .data-strip{padding:32px 24px;border-radius:16px}
  .data-grid{grid-template-columns:1fr;gap:0}
  .data-item{padding:18px 0;border-left:0;border-top:1px solid rgba(255,255,255,.22)}
  .data-item:first-child{border-top:0;padding-top:0}
  .data-item:last-child{padding-bottom:0}
  .content-block{padding-bottom:40px;margin-bottom:40px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .form-card{padding:22px}
}
@media (max-width:479px){
  body{font-size:15.5px}
  .brand-text{font-size:15px}
  .band-meta{gap:14px;font-size:13px}
  .tip-card{padding:22px}
  .cta-band{padding:28px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --brand-600:#0F5FCB;
  --brand-700:#0B4AA8;
  --brand-500:#2C78E0;
  --brand-050:#EAF2FE;
  --brand-900:#082C63;
  --accent-500:#FF6B3D;
  --accent-050:#FFF1EC;
  --ok:#12B886;
  --warn:#F2A93B;
  --err:#E5484D;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#0F1B2D;
  --ink-2:#55637A;
  --ink-3:#8B98AC;
  --inv:#F7FAFF;
  --r-card:16px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,45,.04),0 8px 24px -14px rgba(15,27,45,.18);
  --shadow-2:0 2px 6px rgba(15,27,45,.06),0 18px 40px -18px rgba(15,27,45,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--brand-700)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{line-height:1.85}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease),height var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:17px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 16px -8px rgba(15,95,203,.75);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:12px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:20px;height:2px;
  background:var(--brand-600);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-link.active::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--brand-600);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 10px 24px -14px rgba(255,107,61,.95)}
.btn-accent:hover{background:#F2551F;color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(255,107,61,1)}
.btn-accent:active{transform:translateY(0)}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand-700)}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-050)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.btn-outline-light{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--brand-700)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--brand-050);color:var(--ink-3);box-shadow:none;cursor:not-allowed;border-color:var(--line);transform:none}
.btn.is-loading{pointer-events:none;opacity:.85}
.btn.is-loading::before{
  content:"";width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:8px;padding:0;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0;z-index:99;background:#fff;
  padding:88px 20px 28px;
  display:flex;flex-direction:column;gap:4px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-link{
  display:flex;align-items:center;height:56px;padding:0 4px;
  font-size:18px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);
}
.drawer-link.active{color:var(--brand-700)}
.drawer-cta{margin-top:auto;display:grid;gap:12px;padding-top:24px}

/* ---------- 分类页标题带 ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(118deg,rgba(8,44,99,.94) 0%,rgba(11,74,168,.86) 48%,rgba(15,27,45,.82) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  padding:56px 0 60px;
}
.page-hero::after{
  content:"";position:absolute;inset:auto auto -140px -80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(44,120,224,.55),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(247,250,255,.78);margin-bottom:20px}
.breadcrumb a{color:rgba(247,250,255,.9)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:rgba(247,250,255,.7)}
.page-hero h1{color:#fff;max-width:20em}
.page-hero .hero-sub{margin-top:16px;font-size:17px;color:rgba(247,250,255,.86);max-width:44em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:13px;font-weight:600;color:#fff;letter-spacing:.02em;
}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--white{background:#fff}
.section--ink{background:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand-700);
  background:var(--brand-050);padding:6px 14px;border-radius:var(--r-pill);margin-bottom:16px;
}
.section-head h2{color:var(--ink)}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-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:#D3E0F2}
.card-body{padding:28px}
.card-body h3{color:var(--ink);transition:color var(--dur) var(--ease)}
.card:hover .card-body h3{color:var(--brand-700)}
.card-body p{margin-top:12px;color:var(--ink-2);font-size:15px}
.card-media{position:relative;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;background:var(--brand-050)}
.card-media img{width:100%;aspect-ratio:3/2;object-fit:cover}
.card-media .badge{
  position:absolute;left:16px;top:16px;
}
.card-lg .card-media img{aspect-ratio:16/9}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-solid{background:var(--accent-500);color:#fff}
.badge-light{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.3)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
.link-arrow svg{transition:transform var(--dur) var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* 1 大 2 小信息栅格 */
.info-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:start}
.info-side{display:grid;gap:24px}
.check-list{margin-top:18px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:28px;font-size:15px;color:var(--ink-2)}
.check-list li strong{color:var(--ink);font-weight:600}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:var(--brand-050);
  box-shadow:inset 0 0 0 1px rgba(15,95,203,.28);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:13px;width:6px;height:3px;
  border-left:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
  transform:rotate(-45deg);
}
.icon-chip{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-050);color:var(--brand-700);font-size:15px;font-weight:700;margin-bottom:16px;
}

/* ---------- 数据条 ---------- */
.stats-band{
  border-radius:20px;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700) 62%,var(--brand-900));
  color:var(--inv);padding:48px 40px;
  box-shadow:0 24px 60px -34px rgba(8,44,99,.9);
  position:relative;overflow:hidden;
}
.stats-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);
}
.stats-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:8px 24px}
.stat + .stat{border-left:1px solid rgba(255,255,255,.22)}
.stat:first-child{padding-left:0}
.stat-value{font-size:clamp(36px,4vw,56px);font-weight:700;line-height:1.05;font-variant-numeric:tabular-nums;color:#fff}
.stat-value .unit{font-size:16px;font-weight:600;margin-left:6px;color:rgba(247,250,255,.8)}
.stat-desc{margin-top:10px;font-size:14px;color:rgba(247,250,255,.82)}

/* ---------- 速查列表 ---------- */
.quick-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.quick-list{display:grid;gap:0;margin-top:8px}
.quick-list li{
  display:grid;grid-template-columns:56px 1fr;gap:16px;
  padding:22px 0;border-top:1px solid var(--line);
}
.quick-list li:last-child{border-bottom:1px solid var(--line)}
.quick-no{
  font-size:15px;font-weight:700;color:var(--brand-700);font-variant-numeric:tabular-nums;
  width:40px;height:40px;border-radius:50%;background:var(--brand-050);
  display:inline-flex;align-items:center;justify-content:center;
}
.quick-list h3{font-size:17px}
.quick-list p{margin-top:6px;font-size:15px;color:var(--ink-2)}
.quick-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--brand-050)}
.quick-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.quick-caption{margin-top:12px;font-size:14px;color:var(--ink-3);text-align:center}

/* ---------- 对比表 ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1)}
table.compare{width:100%;border-collapse:collapse;min-width:760px}
table.compare caption{
  caption-side:top;text-align:left;padding:20px 22px 4px;
  font-size:14px;color:var(--ink-3);
}
table.compare th{
  background:var(--brand-050);color:var(--brand-700);
  font-size:14px;font-weight:600;text-align:left;letter-spacing:.02em;
  padding:16px 20px;white-space:nowrap;
}
table.compare td{
  padding:16px 20px;border-top:1px solid var(--line);
  font-size:15px;color:var(--ink-2);vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:#FAFCFF}
table.compare td strong{color:var(--ink);font-weight:600}
.table-note{margin-top:16px;font-size:14px;color:var(--ink-3)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.faq-item.is-open{border-color:#C9DCF6;box-shadow:var(--shadow-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-item.is-open .faq-q{color:var(--brand-700)}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a p{padding:0 22px 22px 24px;font-size:15px;color:var(--ink-2)}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.contact-copy h2{color:var(--ink)}
.contact-copy p{margin-top:16px;color:var(--ink-2)}
.contact-points{margin-top:24px;display:grid;gap:14px}
.contact-points li{position:relative;padding-left:24px;font-size:15px;color:var(--ink-2)}
.contact-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-500);
}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:grid;gap:8px;margin-bottom:18px}
.field label{font-size:14px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  font-size:15px;color:var(--ink);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(15,95,203,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err)}
.field.has-error input:focus,.field.has-error textarea:focus{box-shadow:0 0 0 3px rgba(229,72,77,.14)}
.field .err-msg{display:none;font-size:14px;color:var(--err)}
.field.has-error .err-msg{display:block}
.field input:disabled,.field textarea:disabled{background:var(--brand-050);color:var(--ink-3);cursor:not-allowed}
.consent{display:flex;align-items:flex-start;gap:10px;margin:4px 0 22px}
.consent input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-600);flex:0 0 auto}
.consent span{font-size:14px;color:var(--ink-2);line-height:1.7}
.form-hint{margin-top:14px;font-size:13px;color:var(--ink-3)}
.form-success{
  display:none;text-align:center;padding:28px 12px;
}
.form-success.is-visible{display:block}
.success-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 16px;
  background:rgba(18,184,134,.12);color:var(--ok);
  display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;
}
.form-success h3{color:var(--ink)}
.form-success p{margin-top:10px;color:var(--ink-2);font-size:15px}
.form-success .btn{margin-top:20px}

/* ---------- 相关分类 ---------- */
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.related-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);color:var(--ink);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9DCF6;color:var(--ink)}
.related-card h3{margin-top:14px}
.related-card p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.related-card .link-arrow{margin-top:18px}

/* ---------- CTA 收尾带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;color:#fff;
  background-image:linear-gradient(112deg,rgba(8,44,99,.95),rgba(11,74,168,.9)),url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 26px 60px -34px rgba(8,44,99,.9);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-band p{margin-top:10px;color:rgba(247,250,255,.84);font-size:15px;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(247,250,255,.78);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(247,250,255,.72);max-width:30em}
.footer-contact{margin-top:12px;font-size:14px;color:rgba(247,250,255,.72)}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(247,250,255,.78)}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-note{margin-top:16px;font-size:13px;line-height:1.75;color:rgba(247,250,255,.6)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(247,250,255,.62);
}
.footer-bottom a{color:rgba(247,250,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{max-width:1140px}
}
@media (max-width:992px){
  .nav-links,.nav-actions .btn-outline{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:64px}
  .section{padding:72px 0}
  .section--tight{padding:60px 0}
  .info-grid{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr;gap:28px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px 0}
  .stat{padding:8px 20px}
  .stat:nth-child(odd){padding-left:0;border-left:0}
  .stat:nth-child(even){border-left:1px solid rgba(255,255,255,.22)}
  .stat:nth-child(3){border-left:0}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:44px 0 48px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section-head{margin-bottom:28px}
  .card-body{padding:22px}
  .stats-band{padding:32px 22px}
  .stats-grid{grid-template-columns:1fr;gap:24px}
  .stat{padding:0 0 0 16px;border-left:1px solid rgba(255,255,255,.22)!important}
  .stat:first-child{padding-left:16px}
  .form-card{padding:22px}
  .form-row{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .quick-list li{grid-template-columns:44px 1fr;gap:12px;padding:18px 0}
}
@media (max-width:520px){
  h1{font-size:28px}
  h2{font-size:22px}
  .page-hero{padding:36px 0 40px}
  .brand-text{font-size:16px}
  .footer-grid{padding-bottom:32px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand-600:#0F5FCB;
  --brand-700:#0B4AA8;
  --brand-500:#2C78E0;
  --brand-050:#EAF2FE;
  --brand-900:#082C63;
  --accent-500:#FF6B3D;
  --accent-600:#E85526;
  --accent-050:#FFF1EC;
  --ok:#12B886;
  --warn:#F2A93B;
  --err:#E5484D;
  --bg:#F4F7FB;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#0F1B2D;
  --ink-2:#55637A;
  --ink-3:#8B98AC;
  --white:#F7FAFF;
  --r-xl:20px;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,27,45,.04),0 8px 24px -14px rgba(15,27,45,.18);
  --shadow-2:0 2px 6px rgba(15,27,45,.06),0 18px 40px -18px rgba(15,27,45,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --container:1200px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1440px){:root{--container:1280px}}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px -10px rgba(255,107,61,.85)}
.btn-accent:hover{background:var(--accent-600);color:#fff;box-shadow:0 14px 28px -12px rgba(255,107,61,.95);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--brand-700);border-color:#BFD8F5}
.btn-outline:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--brand-050)}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.42);backdrop-filter:blur(4px)}
.btn-ghost-light:hover{background:rgba(255,255,255,.22);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#E7EDF5;color:var(--ink-3);box-shadow:none;cursor:not-allowed;border-color:transparent}
.btn.is-loading{pointer-events:none;opacity:.86}
.btn.is-loading::after{
  content:"";width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
  backdrop-filter:saturate(180%) blur(8px);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-900));
  color:#fff;font-weight:700;font-size:17px;display:grid;place-items:center;
  box-shadow:0 8px 18px -10px rgba(15,95,203,.9);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand:hover .brand-text{color:var(--brand-700)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:10px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand-700);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-actions .btn{height:44px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;padding:0;place-items:center;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;margin:3px auto;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;left:0;right:0;top:60px;bottom:0;z-index:65;
  background:#fff;display:flex;flex-direction:column;
  padding:16px 20px 0;overflow-y:auto;
  box-shadow:var(--shadow-2);
}
.mobile-drawer[hidden]{display:none !important}
.mobile-drawer a.drawer-link{
  display:block;font-size:18px;font-weight:500;color:var(--ink);
  line-height:56px;border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link.active{color:var(--brand-700);font-weight:700}
.drawer-foot{margin-top:auto;padding:20px 0 28px;display:grid;gap:12px}

/* ============ 标题带（非全屏 Hero） ============ */
.hero-band{
  position:relative;overflow:hidden;
  min-height:44vh;display:flex;align-items:center;
  padding:64px 0 60px;
  background:#082C63;
  color:#fff;
}
.hero-band-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(8,44,99,.94) 0%,rgba(11,74,168,.82) 52%,rgba(15,95,203,.62) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.hero-band-bg::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;
}
.hero-band-inner{position:relative;z-index:2;width:100%}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(247,250,255,.72);margin-bottom:18px}
.breadcrumb a{color:rgba(247,250,255,.86)}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{color:rgba(247,250,255,.66)}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  color:#CFE2FF;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.24);
  padding:7px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.hero-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.hero-title{
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.25;font-weight:700;color:#fff;
  max-width:900px;margin-bottom:16px;
}
.hero-lead{
  font-size:17px;line-height:1.8;color:rgba(247,250,255,.88);
  max-width:720px;margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-tags{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:14px;color:rgba(247,250,255,.78);
}
.hero-tags li{display:flex;align-items:center;gap:14px}
.hero-tags li+li::before{content:"";width:1px;height:14px;background:rgba(255,255,255,.34)}

/* ============ 板块基础 ============ */
.section{padding:clamp(56px,7vw,100px) 0}
.section-alt{background:#fff}
.section-head{max-width:780px;margin-bottom:40px}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-600);margin-bottom:12px;
}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:14px}
.section-desc{font-size:16px;color:var(--ink-2);line-height:1.85}

/* ============ 概览面板 ============ */
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.panel-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:0}
.panel-main{padding:36px 40px;border-right:1px solid var(--line)}
.panel-main h3{font-size:21px;margin-bottom:14px}
.panel-main p{color:var(--ink-2);margin-bottom:20px}
.check-list{display:grid;gap:14px}
.check-list li{
  display:grid;grid-template-columns:24px 1fr;gap:12px;
  align-items:start;font-size:15px;color:var(--ink-2);line-height:1.75;
}
.check-list li strong{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}
.check-mark{
  width:24px;height:24px;border-radius:8px;background:var(--brand-050);
  color:var(--brand-600);display:grid;place-items:center;font-size:13px;font-weight:700;margin-top:2px;
}
.panel-side{padding:36px 34px;background:linear-gradient(170deg,#F7FAFF,#EDF4FE)}
.panel-side h3{font-size:18px;margin-bottom:18px}
.mini-stat{display:flex;align-items:baseline;gap:10px;padding:14px 0;border-bottom:1px dashed #CFE0F6}
.mini-stat:last-child{border-bottom:0;padding-bottom:0}
.mini-stat .num{font-size:28px;font-weight:700;color:var(--brand-700)}
.mini-stat .num small{font-size:14px;font-weight:600;margin-left:2px;color:var(--ink-2)}
.mini-stat .txt{font-size:14px;color:var(--ink-2);line-height:1.6}

/* ============ 处理步骤时间线 ============ */
.timeline{margin-top:8px;display:grid;gap:20px}
.tl-item{position:relative;display:grid;grid-template-columns:64px 1fr;gap:24px}
.tl-item::before{
  content:"";position:absolute;left:31px;top:68px;bottom:-22px;width:2px;
  background:linear-gradient(180deg,#C9DBF7,rgba(201,219,247,.25));
}
.tl-item:last-child::before{display:none}
.tl-node{
  width:64px;height:64px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-700));
  color:#fff;font-size:19px;font-weight:700;
  display:grid;place-items:center;
  box-shadow:0 12px 26px -14px rgba(15,95,203,.95);
  border:4px solid #fff;
}
.tl-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tl-body:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9DBF7}
.tl-title{font-size:20px;margin-bottom:8px}
.tl-text{color:var(--ink-2);font-size:15.5px}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.tag-warm{background:var(--accent-050);color:#C2410C}

/* ============ 深色数据带 ============ */
.dark-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:linear-gradient(135deg,#082C63 0%,#0B4AA8 58%,#0F5FCB 100%);
  color:#fff;padding:52px 48px;
}
.dark-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,107,61,.35),transparent 62%);
}
.dark-band-head{position:relative;z-index:2;max-width:640px;margin-bottom:36px}
.dark-band-head h2{color:#fff;font-size:clamp(23px,2.6vw,30px);margin-bottom:10px}
.dark-band-head p{color:rgba(247,250,255,.84);font-size:15.5px}
.metric-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:0 26px;border-left:1px solid rgba(255,255,255,.2)}
.metric:first-child{border-left:0;padding-left:0}
.metric .num{
  font-size:clamp(30px,3.6vw,46px);font-weight:700;line-height:1.1;
  color:#fff;display:flex;align-items:baseline;gap:4px;
}
.metric .num small{font-size:15px;font-weight:600;color:rgba(255,255,255,.78)}
.metric .cap{margin-top:10px;font-size:14px;color:rgba(247,250,255,.82);line-height:1.65}

/* ============ 场景列表 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.scene-item{
  display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.scene-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9DBF7}
.scene-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);
  color:var(--brand-700);display:grid;place-items:center;font-size:15px;font-weight:700;
}
.scene-item h3{font-size:17px;margin-bottom:6px}
.scene-item p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.figure-row{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;margin-top:40px}
.figure-row img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-md);box-shadow:var(--shadow-1);background:var(--brand-050)}
.figure-row .fig-text h3{font-size:20px;margin-bottom:12px}
.figure-row .fig-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600)}
.link-arrow span{transition:transform var(--dur) var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ FAQ ============ */
.faq{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item[open]{border-color:#C9DBF7;box-shadow:var(--shadow-2)}
.faq-q{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q::-webkit-details-marker{display:none}
.faq-item[open] .faq-q{color:var(--brand-700)}
.faq-q .sign{
  margin-left:auto;width:20px;height:20px;flex:0 0 auto;position:relative;
  transition:transform var(--dur) var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:4px;top:9px;width:12px;height:2px;border-radius:2px;background:currentColor;
}
.faq-q .sign::after{transform:rotate(90deg);transition:transform var(--dur) var(--ease)}
.faq-item[open] .sign::after{transform:rotate(0deg)}
.faq-a{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ 表单区 ============ */
.form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.form-aside h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.form-aside > p{color:var(--ink-2);margin-bottom:26px}
.form-points{display:grid;gap:14px}
.form-points li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:15px;color:var(--ink-2);line-height:1.75}
.form-points .dot{width:22px;height:22px;border-radius:50%;background:var(--brand-050);color:var(--brand-600);display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:2px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:32px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.form-control{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);
  border-radius:var(--r-sm);background:#fff;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
textarea.form-control{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus{
  outline:none;border-color:var(--brand-600);
  box-shadow:0 0 0 3px rgba(15,95,203,.12);
}
.form-control.has-error{border-color:var(--err);box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.field-error{display:none;font-size:13.5px;color:var(--err);margin-top:6px}
.field-error.is-visible{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-2);margin:4px 0 20px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-600);flex:0 0 auto}
.form-note{font-size:13px;color:var(--ink-3);line-height:1.7;margin-top:14px}
.form-success{
  display:none;text-align:center;padding:34px 12px;
}
.form-success.is-visible{display:block}
.success-icon{
  width:56px;height:56px;border-radius:50%;background:#E7F8F2;color:var(--ok);
  display:grid;place-items:center;font-size:24px;margin:0 auto 16px;
}
.form-success h3{font-size:20px;margin-bottom:8px}
.form-success p{color:var(--ink-2);font-size:15px;margin-bottom:18px}

/* ============ CTA 收尾带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--brand-700),var(--brand-600) 65%,var(--brand-500));
  border-radius:var(--r-xl);padding:44px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.16),transparent 62%);
}
.cta-band .cta-text{position:relative;z-index:2;max-width:660px}
.cta-band h2{color:#fff;font-size:clamp(21px,2.6vw,28px);margin-bottom:8px}
.cta-band p{color:rgba(247,250,255,.86);font-size:15.5px}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex:0 0 auto}
.cta-band .btn-ghost-light{border-color:rgba(255,255,255,.55)}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:8px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#C9DBF7}
.rel-card .rel-tag{font-size:12.5px;font-weight:700;color:var(--brand-600);letter-spacing:.06em;margin-bottom:10px}
.rel-card h3{font-size:19px;color:var(--ink);margin-bottom:8px}
.rel-card p{font-size:14.5px;color:var(--ink-2);line-height:1.75;margin-bottom:12px}
.rel-card .link-arrow{font-size:14.5px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#C7D1E0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.8;color:#A9B6C9;margin-top:16px;max-width:340px}
.footer-contact{font-size:14px;color:#8FA0B8;margin-top:12px}
.footer-contact strong{color:#fff;font-weight:600}
.footer-col h4{
  font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.01em;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:#B4C1D4}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-note{font-size:13px;line-height:1.75;color:#8595AC;margin-top:16px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  font-size:13.5px;color:#8595AC;
}
.footer-bottom a{color:#B4C1D4}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-links{gap:18px}
  .nav-actions .btn-outline{display:none}
  .panel-grid{grid-template-columns:1fr}
  .panel-main{border-right:0;border-bottom:1px solid var(--line)}
  .metric{padding:0 18px}
}
@media (max-width:991px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:60px}
  .site-header{position:sticky}
  .hero-band{min-height:auto;padding:48px 0 46px}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .metric{padding:0 20px}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .scene-grid{grid-template-columns:1fr}
  .figure-row{grid-template-columns:1fr;gap:22px}
  .form-wrap{grid-template-columns:1fr;gap:28px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .cta-band .cta-actions{width:100%;flex-wrap:wrap}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .dark-band{padding:40px 28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero-title{font-size:26px}
  .hero-lead{font-size:15.5px}
  .hero-tags{gap:10px;font-size:13px}
  .hero-tags li{gap:10px}
  .tl-item{grid-template-columns:48px 1fr;gap:16px}
  .tl-node{width:48px;height:48px;font-size:16px;border-width:3px}
  .tl-item::before{left:23px;top:52px}
  .tl-body{padding:20px}
  .panel-main,.panel-side{padding:26px 22px}
  .form-card{padding:24px 20px}
  .metric-grid{grid-template-columns:1fr;gap:22px 0}
  .metric{border-left:0;padding:0 0 0 14px;border-left:3px solid rgba(255,107,61,.7)}
  .metric:first-child{padding-left:14px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{height:48px}
  .hero-cta .btn{flex:1 1 100%}
  .cta-band .btn{flex:1 1 100%}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .btn:hover,.tl-body:hover,.scene-item:hover,.rel-card:hover{transform:none}
}