/* roulang page: index */
:root{
  --primary:#0f1e3c;
  --primary-light:#16305f;
  --primary-dark:#0a1226;
  --accent:#c9a227;
  --accent-light:#e8c766;
  --accent-dark:#a8821f;
  --bg:#f5f7fc;
  --white:#ffffff;
  --text:#1c2333;
  --text-muted:#64748b;
  --border:#e8ecf3;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 24px rgba(15,30,60,.08);
  --shadow-hover:0 12px 36px rgba(15,30,60,.14);
  --transition:.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  padding-top:74px;
}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input{font-family:inherit}
.container{max-width:1200px}
.section{padding:90px 0}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(201,162,39,.12);
  color:var(--accent-dark);
  font-size:13px;font-weight:600;
  letter-spacing:.08em;
  padding:6px 18px;border-radius:100px;
  margin-bottom:16px;
}
.section-eyebrow i{font-size:12px}
.section-title{font-size:clamp(26px,3.2vw,40px);font-weight:800;line-height:1.3;color:var(--primary);letter-spacing:-.01em}
.section-subtitle{font-size:16px;color:var(--text-muted);margin-top:14px;line-height:1.8}
.text-brand{color:var(--accent)}
.bg-white{background:var(--white)}

/* ===== Header / Nav ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1080;
  background:rgba(10,18,38,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background var(--transition),box-shadow var(--transition);
}
.site-header .navbar{padding:14px 0;min-height:74px}
.logo-brand{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;color:#fff;
  letter-spacing:.02em;line-height:1.2;
}
.logo-brand:hover{color:#fff}
.logo-icon{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:var(--primary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;flex-shrink:0;
  box-shadow:0 4px 14px rgba(201,162,39,.35);
}
.navbar-nav{gap:4px}
.navbar-nav .nav-link{
  color:rgba(255,255,255,.82);
  font-size:15px;font-weight:500;
  padding:8px 16px !important;
  border-radius:100px;
  transition:color var(--transition),background var(--transition);
  position:relative;
}
.navbar-nav .nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.navbar-nav .nav-link.active{color:#fff;background:rgba(201,162,39,.18);font-weight:600}
.navbar-toggler{
  border:1px solid rgba(255,255,255,.25);
  padding:5px 10px;border-radius:8px;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(201,162,39,.35)}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== Buttons ===== */
.btn{
  border-radius:10px;
  font-weight:600;
  padding:10px 22px;
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition);
  letter-spacing:.01em;
}
.btn:focus{box-shadow:0 0 0 4px rgba(201,162,39,.25)}
.btn-brand{
  background:linear-gradient(135deg,var(--accent-light),var(--accent));
  border:1px solid var(--accent);
  color:var(--primary-dark);
  box-shadow:0 4px 16px rgba(201,162,39,.3);
}
.btn-brand:hover{
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(201,162,39,.4);
}
.btn-outline-brand{
  border:2px solid rgba(255,255,255,.5);
  color:#fff;background:transparent;
}
.btn-outline-brand:hover{
  border-color:var(--accent);
  color:var(--accent);
  background:rgba(201,162,39,.08);
  transform:translateY(-2px);
}
.btn-lg{padding:14px 32px;font-size:16px;border-radius:12px}

/* ===== Hero ===== */
.hero-section{
  position:relative;
  background:linear-gradient(77deg,rgba(8,14,30,.92) 0%,rgba(10,22,48,.78) 55%,rgba(15,30,60,.55) 100%),url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
  padding:130px 0 110px;
  overflow:hidden;
}
.hero-section::after{
  content:"";
  position:absolute;bottom:-60px;right:-40px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,162,39,.2),transparent 70%);
  pointer-events:none;
}
.hero-content{position:relative;z-index:2;max-width:760px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;font-size:13px;font-weight:500;
  padding:7px 18px;border-radius:100px;
  margin-bottom:24px;backdrop-filter:blur(5px);
}
.hero-badge i{color:var(--accent-light)}
.hero-title{
  font-size:clamp(32px,5vw,56px);
  font-weight:900;
  color:#fff;
  line-height:1.18;
  letter-spacing:-.015em;
  margin-bottom:20px;
}
.hero-title .text-brand{
  background:linear-gradient(120deg,var(--accent-light),var(--accent));
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-subtitle{
  font-size:17px;color:rgba(255,255,255,.82);
  line-height:1.8;margin-bottom:34px;max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{
  margin-top:56px;
  display:flex;flex-wrap:wrap;gap:12px;
}
.hero-meta-item{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:12px;
  padding:12px 20px;
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:14px;
  backdrop-filter:blur(6px);
}
.hero-meta-item i{color:var(--accent-light)}

/* ===== Feature Cards ===== */
.features-section{background:var(--white)}
.feature-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px 28px;
  height:100%;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
}
.feature-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(201,162,39,.35);
}
.feature-icon{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,rgba(201,162,39,.15),rgba(201,162,39,.05));
  border:1px solid rgba(201,162,39,.2);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--accent-dark);
  margin-bottom:22px;
}
.feature-card h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.75;margin:0}

/* ===== Category Cards ===== */
.category-card{
  position:relative;display:block;height:100%;
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--transition),box-shadow var(--transition);
  background:var(--white);
}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover)}
.category-card img{width:100%;height:190px;object-fit:cover;transition:transform .4s ease}
.category-card:hover img{transform:scale(1.05)}
.category-body{padding:24px;background:#fff}
.category-body h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:8px}
.category-body p{font-size:14px;color:var(--text-muted);margin-bottom:16px;line-height:1.7}
.category-tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--accent-dark);
  background:rgba(201,162,39,.1);
  padding:5px 14px;border-radius:100px;
}
.category-img-wrap{position:relative;overflow:hidden}
.category-img-wrap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,18,38,.35));
}

/* ===== Stats ===== */
.stats-section{
  position:relative;
  background:linear-gradient(120deg,rgba(10,18,38,.92),rgba(15,30,60,.85)),url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
  padding:70px 0;
}
.stat-item{text-align:center;padding:20px 10px}
.stat-num{
  font-size:clamp(36px,4vw,52px);
  font-weight:900;
  color:var(--accent-light);
  line-height:1.2;
  display:block;
}
.stat-label{color:rgba(255,255,255,.75);font-size:15px;margin-top:6px;display:block}

/* ===== News Section ===== */
.news-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  height:100%;
  transition:box-shadow var(--transition),transform var(--transition),border-color var(--transition);
}
.news-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:rgba(201,162,39,.3);
}
.news-card a{display:flex;flex-direction:column;height:100%}
.news-cat{
  align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--accent-dark);
  background:rgba(201,162,39,.1);
  padding:5px 14px;border-radius:100px;
  margin-bottom:14px;
}
.news-card h3{
  font-size:17px;font-weight:700;color:var(--primary);
  line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14px;color:var(--text-muted);
  line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-time{
  margin-top:auto;
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-muted);
}
.news-time i{color:var(--accent)}
.news-empty{
  background:var(--white);border:1px dashed var(--border);
  border-radius:var(--radius);padding:40px;text-align:center;
  color:var(--text-muted);font-size:15px;
}

/* ===== Highlights ===== */
.highlight-card{
  display:flex;align-items:center;gap:0;
  background:var(--white);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:box-shadow var(--transition),transform var(--transition);
  height:100%;
}
.highlight-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.highlight-media{flex:0 0 44%;min-height:260px;position:relative;overflow:hidden}
.highlight-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.highlight-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,30,60,.2),transparent 70%);
}
.highlight-content{padding:36px 32px;flex:1}
.highlight-content h3{font-size:20px;font-weight:700;color:var(--primary);margin-bottom:12px}
.highlight-content p{font-size:14px;color:var(--text-muted);line-height:1.8;margin-bottom:20px}
.highlight-link{
  font-size:14px;font-weight:600;color:var(--accent-dark);
  display:inline-flex;align-items:center;gap:8px;
  transition:gap var(--transition);
}
.highlight-link:hover{gap:13px;color:var(--accent-dark)}

/* ===== FAQ Accordion ===== */
.faq-card{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:40px;
}
.accordion-item{
  border:1px solid var(--border);
  border-radius:var(--radius-sm) !important;
  margin-bottom:14px;
  overflow:hidden;
  background:#fff;
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:#fff;
  color:var(--primary);
  font-size:16px;font-weight:600;
  padding:18px 22px;
  box-shadow:none !important;
}
.accordion-button:not(.collapsed){
  background:rgba(201,162,39,.06);
  color:var(--accent-dark);
}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23c9a227'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-body{color:var(--text-muted);font-size:15px;line-height:1.8;padding:8px 22px 22px}

/* ===== CTA ===== */
.cta-section{
  position:relative;
  background:linear-gradient(120deg,rgba(10,18,38,.9),rgba(15,30,60,.82)),url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
  padding:80px 0;
  text-align:center;
}
.cta-section .section-title{color:#fff}
.cta-section .section-subtitle{color:rgba(255,255,255,.8)}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ===== Footer ===== */
.site-footer{
  background:var(--primary-dark);
  color:rgba(255,255,255,.7);
  padding:70px 0 0;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;
}
.footer-desc{font-size:14px;line-height:1.8;margin-bottom:20px;color:rgba(255,255,255,.6)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-links a{
  display:block;
  font-size:14px;color:rgba(255,255,255,.65);
  padding:5px 0;
  transition:color var(--transition),padding-left var(--transition);
}
.footer-links a:hover{color:var(--accent-light);padding-left:5px}
.footer-bottom{
  margin-top:50px;
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
  font-size:13px;color:rgba(255,255,255,.5);
  text-align:center;
}

/* ===== Responsive ===== */
@media (max-width: 991.98px){
  body{padding-top:68px}
  .site-header .navbar{min-height:68px}
  .navbar-collapse{
    background:rgba(10,18,38,.97);
    border-radius:14px;
    padding:16px 12px;
    margin-top:12px;
    border:1px solid rgba(255,255,255,.08);
  }
  .navbar-nav .nav-link{text-align:center;padding:10px 16px !important}
  .navbar-nav .nav-link:hover{background:rgba(255,255,255,.06)}
  .navbar .btn{margin:10px auto 4px;display:block;width:fit-content}
  .hero-section{padding:110px 0 80px}
  .section{padding:70px 0}
  .highlight-card{flex-direction:column}
  .highlight-media{flex:0 0 auto;width:100%;min-height:220px;position:relative}
  .highlight-media img{position:absolute}
  .footer-bottom{text-align:center}
}
@media (max-width: 767.98px){
  body{padding-top:64px}
  .section{padding:56px 0}
  .section-head{margin-bottom:40px}
  .hero-section{padding:100px 0 60px}
  .hero-actions .btn{width:100%}
  .hero-meta{flex-direction:column}
  .feature-card{padding:24px 20px}
  .category-body{padding:20px}
  .news-card{padding:20px}
  .faq-card{padding:24px 16px}
  .cta-section{padding:56px 0}
  .highlight-content{padding:24px 20px}
}
@media (max-width: 520px){
  .hero-title{font-size:30px}
  .section-title{font-size:24px}
  .hero-meta-item{padding:10px 14px;font-size:13px}
  .stat-num{font-size:34px}
  .btn-lg{padding:12px 24px;font-size:15px}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #1a5cff;
  --primary-dark: #0f3fd1;
  --primary-light: #eaf0ff;
  --accent: #06b37c;
  --accent-light: #e3f9f1;
  --dark: #0b1a33;
  --dark-soft: #13294b;
  --body-bg: #f7f9fc;
  --white: #ffffff;
  --text: #1e2a44;
  --text-muted: #63708a;
  --border: #e3e9f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(11, 26, 51, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 26, 51, 0.08);
  --shadow-lg: 0 16px 40px rgba(11, 26, 51, 0.12);
  --transition: all 0.25s ease;
  --section-space: 80px;
}

/* ===== 基础 Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--body-bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
}

p {
  margin-bottom: 0;
}

/* 容器 */
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 主导航 ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.site-header .navbar {
  padding: 14px 0;
  min-height: 70px;
}

.logo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 0.01em;
}

.logo-brand:hover {
  color: var(--primary);
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 10px;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(26, 92, 255, 0.25);
}

.navbar-nav {
  gap: 6px;
}

.navbar-nav .nav-link {
  padding: 8px 16px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.navbar-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.btn-brand {
  background-color: var(--primary);
  color: #fff;
  border: 1px solid var(--primary);
  padding: 8px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(26, 92, 255, 0.2);
}

.btn-brand:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26, 92, 255, 0.3);
}

.btn-outline-brand {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 8px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.btn-outline-brand:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.navbar-toggler {
  border: none;
  outline: none;
  box-shadow: none !important;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(11,26,51,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== 内页 Banner ===== */
.page-banner {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 90px 0 70px;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 26, 51, 0.88) 0%, rgba(15, 63, 209, 0.55) 55%, rgba(6, 179, 124, 0.35) 100%);
  z-index: 1;
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  color: #fff;
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.page-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  max-width: 640px;
  line-height: 1.8;
}

.breadcrumb-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 4px 14px;
  border-radius: 30px;
  font-size: 0.85rem;
  color: #fff;
  margin-bottom: 18px;
}

.breadcrumb-badge i {
  font-size: 0.75rem;
  opacity: 0.8;
}

/* ===== 板块通用 ===== */
.section {
  padding: var(--section-space) 0;
  position: relative;
}

.section-alt {
  background: var(--white);
}

.section-head {
  margin-bottom: 48px;
}

.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 560px;
}

/* ===== 分类高亮卡 ===== */
.platform-lead {
  background: linear-gradient(135deg, var(--primary-light), var(--white));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.platform-lead::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 160px;
  height: 160px;
  background: rgba(26, 92, 255, 0.06);
  border-radius: 50%;
  z-index: 0;
}

.platform-lead .lead-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
  box-shadow: 0 6px 16px rgba(26, 92, 255, 0.25);
}

.platform-lead h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.platform-lead p {
  font-size: 0.98rem;
  line-height: 1.8;
}

.stat-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}

.stat-block:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== 内容卡片 ===== */
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.article-card .card-img-wrap {
  position: relative;
  overflow: hidden;
  height: 180px;
}

.article-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.article-card:hover .card-img-wrap img {
  transform: scale(1.05);
}

.card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11, 26, 51, 0.75);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 30px;
  z-index: 2;
}

.card-body-style {
  padding: 22px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body-style h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
}

.card-body-style h3 a {
  color: var(--dark);
}

.card-body-style h3 a:hover {
  color: var(--primary);
}

.card-body-style p.desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.card-meta .date {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-meta .more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

.card-meta .more-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

/* ===== 内容列表 ===== */
.article-list-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 18px;
  transition: var(--transition);
}

.article-list-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(26, 92, 255, 0.3);
}

.article-list-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.article-list-card h3 a {
  color: var(--dark);
}

.article-list-card h3 a:hover {
  color: var(--primary);
}

.article-list-card .meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.article-list-card .meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.article-list-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ===== 流程步骤 ===== */
.step-item {
  display: flex;
  gap: 20px;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  transition: var(--transition);
}

.step-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.step-num {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(26, 92, 255, 0.2);
}

.step-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--dark);
}

.step-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(26, 92, 255, 0.35);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary i {
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item[open] summary i {
  transform: rotate(180deg);
}

.faq-item .faq-body {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: linear-gradient(120deg, var(--dark) 0%, #1a2d55 60%, var(--primary-dark) 100%);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: 70px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(11, 26, 51, 0.82);
  z-index: 1;
}

.cta-section .container {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 24px;
  font-size: 1rem;
}

.cta-section .btn-group-custom {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-light-brand {
  background: #fff;
  color: var(--dark);
  border: none;
  padding: 10px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.btn-light-brand:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26, 92, 255, 0.4);
}

.btn-outline-light2 {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 9px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.btn-outline-light2:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  margin: 14px 0 20px;
  max-width: 360px;
}

.footer-title {
  font-size: 1rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.88rem;
  line-height: 1.5;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  margin-top: 50px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
  .page-banner {
    padding: 60px 0 40px;
  }
  .page-banner h1 {
    font-size: 1.9rem;
  }
  .section {
    --section-space: 60px;
  }
  .navbar-collapse {
    background: var(--white);
    padding: 16px 0;
    margin-top: 10px;
    border-top: 1px solid var(--border);
  }
  .navbar-nav {
    margin-bottom: 14px;
  }
  .navbar-nav .nav-link {
    padding: 12px 18px;
    border-radius: 8px;
    margin: 2px 0;
  }
}

@media (max-width: 767.98px) {
  .container {
    padding: 0 18px;
  }
  .page-banner h1 {
    font-size: 1.6rem;
  }
  .page-banner p {
    font-size: 0.95rem;
  }
  .section-head h2 {
    font-size: 1.6rem;
  }
  .platform-lead {
    padding: 24px;
  }
  .step-item {
    padding: 20px;
  }
  .cta-section h2 {
    font-size: 1.5rem;
  }
  .article-card .card-img-wrap {
    height: 150px;
  }
}

@media (max-width: 575.98px) {
  .logo-brand {
    font-size: 1.1rem;
  }
  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
  }
  .page-banner {
    padding: 45px 0 30px;
  }
  .breadcrumb-badge {
    font-size: 0.75rem;
    margin-bottom: 12px;
  }
  .step-item {
    flex-direction: column;
    gap: 12px;
  }
  .step-num {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }
  .article-list-card {
    padding: 18px;
  }
  .card-body-style {
    padding: 16px;
  }
  .footer-desc {
    font-size: 0.85rem;
  }
}

/* roulang page: article */
:root {
            --primary: #1e3a8a;
            --primary-light: #3b82f6;
            --primary-lighter: #dbeafe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --dark: #0f172a;
            --bg: #f8fafc;
            --card-bg: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --radius-sm: 0.5rem;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-light);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }

        .logo-brand {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--dark) !important;
            display: flex;
            align-items: center;
            gap: 0.65rem;
            line-height: 1.2;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-size: 1.1rem;
            box-shadow: 0 6px 15px rgba(30, 58, 138, 0.3);
        }

        .navbar-dark .navbar-toggler,
        .navbar .navbar-toggler {
            border-color: rgba(15, 23, 42, 0.15);
            padding: 0.35rem 0.6rem;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 0.2rem rgba(30, 58, 138, 0.15);
        }

        .navbar-nav .nav-link {
            color: var(--text) !important;
            font-weight: 500;
            padding: 0.5rem 1.1rem;
            border-radius: 999px;
            margin: 0 0.2rem;
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--primary) !important;
            background: var(--primary-lighter);
        }

        .navbar-nav .nav-link.active {
            color: #fff !important;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
        }

        .btn-brand {
            --bs-btn-bg: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-bg: var(--primary-light);
            --bs-btn-hover-border-color: var(--primary-light);
            --bs-btn-active-bg: var(--primary-light);
            --bs-btn-active-border-color: var(--primary-light);
            border-radius: 999px;
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
            transition: var(--transition);
        }

        .btn-outline-brand {
            --bs-btn-color: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-bg: var(--primary);
            --bs-btn-hover-color: #fff;
            --bs-btn-hover-border-color: var(--primary);
            --bs-btn-active-bg: var(--primary);
            --bs-btn-active-border-color: var(--primary);
            border-radius: 999px;
            padding: 0.55rem 1.4rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-brand:hover,
        .btn-outline-brand:hover,
        .btn-brand:focus,
        .btn-outline-brand:focus {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30, 58, 138, 0.3);
        }

        .btn-brand:active,
        .btn-outline-brand:active {
            transform: translateY(0);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 6rem 0;
            position: relative;
            color: #fff;
            text-align: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.75), rgba(30, 58, 138, 0.65));
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-nav {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            color: rgba(255, 255, 255, 0.9);
        }

        .breadcrumb-nav a {
            color: var(--accent);
        }

        .breadcrumb-nav a:hover {
            color: #fff;
        }

        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            max-width: 850px;
            margin: 0 auto 1.2rem;
            line-height: 1.3;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 1rem;
            align-items: center;
        }

        .badge.bg-accent {
            background: var(--accent);
            color: #fff;
            font-size: 0.9rem;
            border-radius: 999px;
            padding: 0.35rem 1rem;
        }

        .meta-date {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.9);
        }

        /* ===== Article Section ===== */
        .article-section {
            padding: 4rem 0;
        }

        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            padding: 2rem;
            border: 1px solid var(--border);
        }

        .article-cover {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 2rem;
        }

        .article-cover img {
            width: 100%;
            object-fit: cover;
            display: block;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-body h1,
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--dark);
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body img {
            border-radius: var(--radius-sm);
        }

        .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        .tag {
            background: var(--primary-lighter);
            color: var(--primary);
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-weight: 500;
        }

        .not-found-card {
            text-align: center;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 4rem 2rem;
            border: 1px solid var(--border);
        }

        .not-found-card i {
            font-size: 3.5rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .not-found-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        /* ===== Sidebar ===== */
        .side-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.75rem;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            margin-bottom: 1.5rem;
        }

        .side-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            color: var(--dark);
            position: relative;
            padding-bottom: 0.7rem;
        }

        .side-card h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }

        .side-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .side-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed var(--border);
        }

        .side-list li:last-child {
            border-bottom: none;
        }

        .side-list a {
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .side-list a:hover {
            color: var(--primary);
            padding-left: 0.25rem;
        }

        .side-list i {
            color: var(--primary-light);
            font-size: 0.85rem;
        }

        .side-btn {
            width: 100%;
            margin-top: 0.5rem;
        }

        /* ===== Service Cards ===== */
        .service-cards-section {
            padding: 4rem 0;
            background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 50%, #fefcff 100%);
        }

        .section-title-wrapper {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-eyebrow {
            display: inline-block;
            background: var(--primary-lighter);
            color: var(--primary);
            border-radius: 999px;
            padding: 0.25rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0.75rem 0 0.75rem;
        }

        .section-subtitle {
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1rem;
        }

        .service-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .service-card a {
            color: inherit;
        }

        .service-card .card-img-wrap {
            overflow: hidden;
            height: 180px;
        }

        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .service-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .service-card .card-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .service-card .card-body h5 {
            font-weight: 700;
            margin-bottom: 0.75rem;
            font-size: 1.2rem;
        }

        .service-card .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            flex: 1;
        }

        .service-card .btn {
            align-self: flex-start;
            margin-top: 1rem;
        }

        .badge.bg-soft-primary {
            background: var(--primary-lighter);
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 4rem 0;
            background: var(--bg);
        }

        .accordion {
            --bs-accordion-border-radius: var(--radius-sm);
            --bs-accordion-inner-border-radius: var(--radius-sm);
            --bs-accordion-bg: var(--card-bg);
            --bs-accordion-border-color: var(--border);
            --bs-accordion-active-bg: var(--primary-lighter);
            --bs-accordion-active-color: var(--primary);
        }

        .accordion-item {
            border: 1px solid var(--border) !important;
            margin-bottom: 1rem;
            border-radius: var(--radius-sm) !important;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
        }

        .accordion-button {
            font-weight: 600;
            color: var(--dark);
            padding: 1.2rem 1.5rem;
            background-color: var(--card-bg);
            box-shadow: none;
            transition: var(--transition);
        }

        .accordion-button:not(.collapsed) {
            background-color: var(--primary-lighter);
            color: var(--primary);
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 0.25rem rgba(30, 58, 138, 0.1);
        }

        .accordion-body {
            color: var(--text-muted);
            padding: 1.5rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4rem 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 23, 42, 0.8);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 650px;
            margin: 0 auto 2rem;
            font-size: 1.05rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 1.5rem;
        }

        .site-footer .footer-brand {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1.2rem;
        }

        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            max-width: 380px;
        }

        .site-footer .footer-title {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            font-size: 0.95rem;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 0.25rem;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .navbar-collapse {
                padding: 1rem 0;
            }

            .navbar-nav .nav-link {
                padding: 0.6rem 1rem;
                margin: 0.15rem 0;
            }

            .page-hero h1 {
                font-size: 2rem;
            }

            .section-title {
                font-size: 1.8rem;
            }

            .article-card {
                padding: 1.5rem;
            }

            .aside-sidebar {
                margin-top: 2rem;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 4rem 0;
            }

            .page-hero h1 {
                font-size: 1.6rem;
            }

            .hero-meta {
                flex-direction: column;
                gap: 0.5rem;
            }

            .article-section {
                padding: 2.5rem 0;
            }

            .article-card {
                padding: 1rem;
            }

            .service-cards-section,
            .faq-section,
            .cta-section {
                padding: 2.5rem 0;
            }

            .cta-content h2 {
                font-size: 1.7rem;
            }

            .site-footer {
                padding: 2.5rem 0 1rem;
            }
        }

        @media (max-width: 520px) {
            .logo-brand {
                font-size: 1rem;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }

            .btn-brand,
            .btn-outline-brand {
                padding: 0.45rem 1rem;
                font-size: 0.9rem;
            }

            .page-hero h1 {
                font-size: 1.4rem;
            }
        }

/* roulang page: category2 */
:root {
  --brand-primary: #0f6e4f;
  --brand-primary-dark: #0a5138;
  --brand-primary-light: #e6f2ed;
  --brand-accent: #d4a83a;
  --brand-accent-dark: #b38a26;
  --brand-bg: #f6f8f7;
  --brand-surface: #ffffff;
  --brand-text: #1c2a24;
  --brand-text-weak: #66766f;
  --brand-border: #dfe7e3;
  --brand-radius-sm: 8px;
  --brand-radius: 16px;
  --brand-radius-lg: 24px;
  --brand-shadow-sm: 0 2px 8px rgba(15, 110, 79, .06);
  --brand-shadow: 0 12px 32px rgba(15, 110, 79, .10);
  --brand-shadow-lg: 0 20px 48px rgba(15, 110, 79, .14);
  --brand-space: 96px;
  --brand-font: "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--brand-font);
  background: var(--brand-bg);
  color: var(--brand-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color .25s ease;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button,
input {
  font-family: inherit;
}
.container {
  max-width: 1200px;
}
.section-pad {
  padding: 96px 0;
}
@media (max-width: 992px) {
  .section-pad {
    padding: 68px 0;
  }
}
@media (max-width: 576px) {
  .section-pad {
    padding: 52px 0;
  }
}
.section-head {
  max-width: 720px;
  margin: 0 auto 52px;
  text-align: center;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--brand-primary);
  background: var(--brand-primary-light);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--brand-text);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.section-sub {
  font-size: 16px;
  color: var(--brand-text-weak);
  line-height: 1.8;
}

/* ========== Header / Nav ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 231, 227, .8);
  box-shadow: 0 4px 24px rgba(15, 110, 79, .04);
}
.navbar {
  padding: 14px 0;
}
.logo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--brand-text);
  letter-spacing: .3px;
  white-space: nowrap;
}
.logo-brand:hover {
  color: var(--brand-primary);
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--brand-primary), #21a37e);
  color: #fff;
  font-size: 16px;
  box-shadow: 0 6px 14px rgba(15, 110, 79, .3);
}
.navbar-nav {
  gap: 4px;
}
.navbar-nav .nav-link {
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand-text-weak);
  border-radius: 999px;
  transition: color .25s ease, background .25s ease;
}
.navbar-nav .nav-link:hover {
  color: var(--brand-primary);
  background: var(--brand-primary-light);
}
.navbar-nav .nav-link.active {
  color: var(--brand-primary);
  background: var(--brand-primary-light);
  font-weight: 700;
}
.btn-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--brand-primary), #179a73);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 26px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .5px;
  box-shadow: 0 8px 20px rgba(15, 110, 79, .25);
  transition: all .3s ease;
  white-space: nowrap;
}
.btn-brand:hover {
  background: linear-gradient(135deg, var(--brand-primary-dark), var(--brand-primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(15, 110, 79, .35);
}
.btn-brand:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(15, 110, 79, .22);
}
.btn-outline-brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--brand-primary);
  border: 2px solid var(--brand-primary);
  border-radius: 999px;
  padding: 8px 24px;
  font-size: 15px;
  font-weight: 700;
  transition: all .3s ease;
  white-space: nowrap;
}
.btn-outline-brand:hover {
  background: var(--brand-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 110, 79, .2);
}
.navbar-toggler {
  border: 2px solid var(--brand-border);
  border-radius: 10px;
  padding: 6px 10px;
}
.navbar-toggler:focus {
  box-shadow: none;
  border-color: var(--brand-primary);
}
@media (max-width: 992px) {
  .navbar-collapse {
    padding: 16px 0 8px;
  }
  .navbar-nav {
    gap: 2px;
    margin-bottom: 12px;
  }
  .navbar-nav .nav-link {
    padding: 10px 16px;
    border-radius: 10px;
  }
}

/* ========== Page Hero ========== */
.page-hero {
  position: relative;
  padding: 100px 0 96px;
  background: linear-gradient(120deg, rgba(10, 40, 31, .88), rgba(15, 110, 79, .78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(212, 168, 58, .18);
  filter: blur(60px);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.page-hero .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 999px;
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #fff;
  margin-bottom: 20px;
  backdrop-filter: blur(6px);
}
.page-hero h1 {
  font-size: clamp(30px, 4.6vw, 50px);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.page-hero h1 span {
  color: var(--brand-accent);
}
.page-hero p.lead {
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .88);
  max-width: 680px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
@media (max-width: 576px) {
  .page-hero {
    padding: 72px 0 64px;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* ========== Quick Help Cards ========== */
.quick-help {
  margin-top: -44px;
  position: relative;
  z-index: 5;
  padding-bottom: 0;
}
.help-card {
  background: var(--brand-surface);
  border-radius: var(--brand-radius);
  border: 1px solid var(--brand-border);
  box-shadow: var(--brand-shadow);
  padding: 30px 26px;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.help-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--brand-shadow-lg);
}
.help-card .help-icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  color: #fff;
  margin-bottom: 18px;
  background: linear-gradient(135deg, var(--brand-primary), #179a73);
  box-shadow: 0 8px 18px rgba(15, 110, 79, .22);
}
.help-card .help-icon.tint-gold {
  background: linear-gradient(135deg, var(--brand-accent), #e8c45c);
  box-shadow: 0 8px 18px rgba(212, 168, 58, .25);
}
.help-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--brand-text);
}
.help-card p {
  font-size: 14px;
  color: var(--brand-text-weak);
  margin-bottom: 0;
  line-height: 1.75;
}

/* ========== Login Steps ========== */
.login-steps {
  background: var(--brand-surface);
}
.step-item {
  position: relative;
  padding: 32px 28px;
  background: #fbfcfb;
  border: 1px solid var(--brand-border);
  border-radius: var(--brand-radius);
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--brand-shadow);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}
.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-item p {
  font-size: 14px;
  color: var(--brand-text-weak);
  margin-bottom: 0;
  line-height: 1.75;
}
.step-connector {
  display: none;
}
@media (min-width: 992px) {
  .step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    right: -30px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--brand-accent);
    font-size: 20px;
    z-index: 2;
  }
}

/* ========== Content Cards ========== */
.issue-card {
  background: var(--brand-surface);
  border-radius: var(--brand-radius);
  overflow: hidden;
  border: 1px solid var(--brand-border);
  box-shadow: var(--brand-shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease;
}
.issue-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--brand-shadow);
}
.issue-card .card-img-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.issue-card .card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.issue-card:hover .card-img-wrap img {
  transform: scale(1.05);
}
.issue-card .card-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(10, 40, 31, .55));
}
.issue-card .card-body {
  padding: 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.issue-card .card-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  color: var(--brand-primary);
  background: var(--brand-primary-light);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.issue-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.45;
  color: var(--brand-text);
}
.issue-card p {
  font-size: 14px;
  color: var(--brand-text-weak);
  line-height: 1.8;
  margin-bottom: 18px;
  flex: 1;
}
.issue-card .card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--brand-text-weak);
  border-top: 1px solid var(--brand-border);
  padding-top: 16px;
}
.issue-card .card-meta i {
  color: var(--brand-primary);
}

/* ========== Security Tips ========== */
.security-section {
  background: linear-gradient(135deg, #0a5138, #0f6e4f 60%, #179a73);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.security-section::before {
  content: "";
  position: absolute;
  left: -80px;
  bottom: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(212, 168, 58, .12);
}
.security-section .section-kicker {
  background: rgba(255, 255, 255, .14);
  color: #ffd97a;
}
.security-section .section-title,
.security-section .section-sub {
  color: #fff;
}
.security-section .section-sub {
  color: rgba(255, 255, 255, .78);
}
.security-grid {
  position: relative;
  z-index: 2;
}
.security-item {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--brand-radius);
  padding: 28px;
  height: 100%;
  backdrop-filter: blur(8px);
  transition: background .3s ease, transform .3s ease;
}
.security-item:hover {
  background: rgba(255, 255, 255, .14);
  transform: translateY(-4px);
}
.security-item i {
  font-size: 28px;
  color: #ffd97a;
  margin-bottom: 16px;
}
.security-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}
.security-item p {
  font-size: 14px;
  color: rgba(255, 255, 255, .78);
  margin-bottom: 0;
  line-height: 1.8;
}

/* ========== FAQ ========== */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
}
.accordion-item {
  border: 1px solid var(--brand-border);
  border-radius: 14px !important;
  overflow: hidden;
  margin-bottom: 14px;
  background: var(--brand-surface);
  box-shadow: var(--brand-shadow-sm);
}
.accordion-button {
  font-size: 16px;
  font-weight: 700;
  color: var(--brand-text);
  background: transparent;
  padding: 20px 24px;
  border: none;
}
.accordion-button:not(.collapsed) {
  color: var(--brand-primary);
  background: var(--brand-primary-light);
  box-shadow: none;
}
.accordion-button:focus {
  box-shadow: none;
  border-color: var(--brand-primary);
}
.accordion-button::after {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%230f6e4f' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.accordion-body {
  padding: 4px 24px 22px;
  font-size: 15px;
  color: var(--brand-text-weak);
  line-height: 1.85;
}

/* ========== CTA ========== */
.cta-section {
  background: var(--brand-surface);
  padding: 80px 0;
}
.cta-box {
  position: relative;
  background: linear-gradient(120deg, #0a5138, #0f6e4f);
  border-radius: var(--brand-radius-lg);
  padding: 56px 48px;
  overflow: hidden;
  text-align: center;
}
.cta-box::before {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(212, 168, 58, .18);
}
.cta-box::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .06);
}
.cta-box h2 {
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-box p {
  color: rgba(255, 255, 255, .85);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 30px;
  line-height: 1.8;
}
.cta-box .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--brand-accent);
  color: #1c2a24;
  border: none;
  border-radius: 999px;
  padding: 14px 40px;
  font-size: 16px;
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(212, 168, 58, .35);
  transition: all .3s ease;
  position: relative;
  z-index: 2;
}
.cta-box .btn-cta:hover {
  background: #e8c45c;
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(212, 168, 58, .45);
}
@media (max-width: 576px) {
  .cta-box {
    padding: 44px 24px;
  }
}

/* ========== Footer ========== */
.site-footer {
  background: #0c1f18;
  color: rgba(255, 255, 255, .78);
  padding: 76px 0 0;
}
.site-footer .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.85;
  margin-bottom: 24px;
  max-width: 380px;
  color: rgba(255, 255, 255, .66);
}
.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, .62);
  transition: color .25s ease, padding-left .25s ease;
}
.footer-links a:hover {
  color: var(--brand-accent);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 24px 0;
  margin-top: 56px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .48);
}
@media (max-width: 576px) {
  .site-footer {
    padding: 56px 0 0;
  }
}

/* roulang page: category3 */
:root {
  --primary: #e63946;
  --primary-dark: #b02a35;
  --primary-light: #fff1f0;
  --secondary: #1d3557;
  --secondary-light: #eef2f7;
  --accent: #f4a261;
  --bg: #f8f9fc;
  --bg-white: #ffffff;
  --text: #1e2a32;
  --text-weak: #6c7a89;
  --border: #e8ecf2;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
  --shadow: 0 6px 30px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.12);
  --sp: 16px;
  --sp-lg: 40px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  max-width: 1200px;
  padding-left: 20px;
  padding-right: 20px;
}

/* ========== 导航 ========== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .navbar {
  padding: 14px 0;
}

.logo-brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-brand:hover {
  color: var(--text);
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
}

.navbar-nav .nav-link {
  font-weight: 500;
  color: var(--text-weak);
  padding: 8px 16px;
  border-radius: 50px;
  transition: all 0.25s ease;
  font-size: 0.95rem;
}

.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.navbar-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.navbar-toggler {
  border: none;
  padding: 8px;
  border-radius: 10px;
  background: var(--secondary-light);
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.2);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(30,42,50,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ========== 按钮 ========== */
.btn {
  font-weight: 600;
  border-radius: 50px;
  padding: 10px 24px;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.btn-brand {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
}

.btn-brand:hover, .btn-brand:focus {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.45);
}

.btn-outline-brand {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline-brand:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
}

.btn-light-bg {
  background: #fff;
  color: var(--secondary);
  box-shadow: var(--shadow-sm);
}

.btn-light-bg:hover {
  background: var(--secondary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 1.05rem;
}

/* ========== Banner / 内页首屏 ========== */
.page-banner {
  position: relative;
  padding: 90px 0 70px;
  background: linear-gradient(135deg, var(--secondary) 0%, #16324f 100%);
  overflow: hidden;
  color: #fff;
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.08);
  animation: float 8s ease-in-out infinite;
}

.page-banner::after {
  content: '';
  position: absolute;
  bottom: -120px;
  left: 10%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.15);
  filter: blur(60px);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.banner-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  margin-bottom: 20px;
}

.banner-badge i {
  color: var(--accent);
}

.page-banner h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-banner .lead {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.breadcrumb-custom {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.breadcrumb-custom a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb-custom a:hover {
  color: var(--accent);
}

.breadcrumb-custom i {
  font-size: 12px;
}

/* ========== 通用区块 ========== */
.section {
  padding: 80px 0;
}

.section.bg-white {
  background: var(--bg-white);
}

.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}

.section-head .section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.3;
}

.section-head p {
  color: var(--text-weak);
  font-size: 1.02rem;
  margin-bottom: 0;
}

.section-head.text-center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.divider {
  width: 60px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 16px auto 0;
}

/* ========== 活动卡片 ========== */
.event-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.event-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.event-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.event-card:hover .event-card-media img {
  transform: scale(1.06);
}

.event-card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-block;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  box-shadow: var(--shadow-sm);
}

.event-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.event-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-weak);
  margin-bottom: 12px;
}

.event-card-meta i {
  margin-right: 4px;
  color: var(--primary);
}

.event-card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
}

.event-card-body h3 a:hover {
  color: var(--primary);
}

.event-card-body p {
  color: var(--text-weak);
  font-size: 0.92rem;
  margin-bottom: 16px;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.event-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
}

.event-card-footer a {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.event-card-footer a:hover {
  gap: 10px;
}

.event-card-footer .date {
  color: var(--text-weak);
  font-size: 0.8rem;
}

/* ========== 资讯列表 ========== */
.news-list-wrapper {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  margin-bottom: 24px;
}

.news-list-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease;
}

.news-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.news-list-item:hover {
  background: var(--primary-light);
  margin: 0 -16px;
  padding-left: 16px;
  padding-right: 16px;
  border-radius: 12px;
}

.news-list-date {
  flex-shrink: 0;
  width: 64px;
  text-align: center;
  background: var(--secondary-light);
  border-radius: 12px;
  padding: 10px 8px;
}

.news-list-date .day {
  display: block;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
}

.news-list-date .month {
  display: block;
  font-size: 0.75rem;
  color: var(--text-weak);
  text-transform: uppercase;
}

.news-list-content {
  flex: 1;
}

.news-list-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.4;
}

.news-list-content h3 a:hover {
  color: var(--primary);
}

.news-list-content p {
  color: var(--text-weak);
  font-size: 0.9rem;
  margin-bottom: 8px;
  line-height: 1.6;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-pill {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--secondary);
  background: var(--secondary-light);
  padding: 3px 10px;
  border-radius: 50px;
  font-weight: 500;
}

.tag-pill.hot {
  color: var(--primary);
  background: var(--primary-light);
}

/* ========== 主题标签 ========== */
.chip-scroll {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.chip-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
  transition: all 0.3s ease;
}

.chip-item:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.chip-item.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 6px 20px rgba(230, 57, 70, 0.3);
}

.chip-item i {
  font-size: 0.85rem;
}

/* ========== 赛事回顾 ========== */
.review-block {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 30px;
}

.review-block .row {
  align-items: center;
}

.review-media {
  position: relative;
  overflow: hidden;
  height: 100%;
  min-height: 320px;
}

.review-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.review-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent 50%);
}

.review-body {
  padding: 36px;
}

.review-body h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.4;
}

.review-body p {
  color: var(--text-weak);
  margin-bottom: 20px;
  line-height: 1.75;
}

.review-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.review-stats .stat-item .num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1.2;
}

.review-stats .stat-item .label {
  font-size: 0.8rem;
  color: var(--text-weak);
}

/* ========== 数据区块 ========== */
.stat-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 28px 20px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.stat-card i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 12px;
  display: inline-block;
}

.stat-card .stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.4;
}

.stat-card .stat-label {
  color: var(--text-weak);
  font-size: 0.9rem;
}

/* ========== 高亮模块 ========== */
.feature-box {
  background: linear-gradient(135deg, var(--primary-light), var(--bg-white));
  border: 1px solid rgba(230, 57, 70, 0.2);
  border-radius: var(--radius);
  padding: 24px;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-box i {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 14px;
}

.feature-box h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-box p {
  font-size: 0.9rem;
  color: var(--text-weak);
  margin-bottom: 0;
}

/* ========== FAQ ========== */
.faq-section {
  background: var(--secondary);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.faq-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.05);
}

.accordion-custom .accordion-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px !important;
  margin-bottom: 14px;
  overflow: hidden;
  backdrop-filter: blur(6px);
}

.accordion-custom .accordion-button {
  background: transparent;
  color: #fff;
  font-weight: 600;
  padding: 20px 24px;
  font-size: 1rem;
  box-shadow: none;
}

.accordion-custom .accordion-button:not(.collapsed) {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.accordion-custom .accordion-button::after {
  filter: invert(1);
}

.accordion-custom .accordion-button:focus {
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.accordion-custom .accordion-body {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.92rem;
  padding: 20px 24px;
  padding-top: 0;
  line-height: 1.75;
}

/* ========== CTA ========== */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border-radius: var(--radius-lg);
  margin: 60px 0;
  position: relative;
  overflow: hidden;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  background-blend-mode: multiply;
}

.cta-section .cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 40px 20px;
}

.cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 1.02rem;
}

.cta-section .btn-white {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  border-radius: 50px;
  padding: 14px 34px;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
  background: var(--primary-light);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 400px;
}

.footer-title {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: all 0.25s ease;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  margin-top: 48px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ========== 响应式 ========== */
@media (max-width: 991px) {
  .site-header .navbar-collapse {
    background: #fff;
    padding: 16px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    margin-top: 12px;
  }

  .navbar-nav .nav-link {
    padding: 10px 16px;
  }

  .page-banner {
    padding: 60px 0 50px;
  }

  .section {
    padding: 56px 0;
  }

  .review-media {
    min-height: 240px;
  }

  .review-body {
    padding: 28px;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 44px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .event-card-body {
    padding: 18px;
  }

  .review-stats {
    gap: 20px;
    flex-wrap: wrap;
  }

  .news-list-item {
    flex-direction: column;
    gap: 12px;
  }

  .news-list-date {
    display: flex;
    align-items: center;
    gap: 8px;
    width: auto;
    padding: 6px 14px;
  }

  .news-list-date .day {
    font-size: 1.1rem;
  }

  .cta-section {
    margin: 40px 0;
    padding: 50px 0;
  }

  .cta-section .cta-content {
    padding: 20px;
  }
}

@media (max-width: 575px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-banner {
    padding: 44px 0 40px;
  }

  .page-banner h1 {
    font-size: 1.6rem;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 0.95rem;
  }

  .section-head h2 {
    font-size: 1.4rem;
  }

  .news-list-wrapper {
    padding: 20px;
  }

  .chip-scroll {
    gap: 8px;
  }

  .chip-item {
    padding: 8px 14px;
    font-size: 0.82rem;
  }
}