/* roulang page: index */
:root{
  --brand-1:#6D3BF5;
  --brand-2:#3A1FB8;
  --brand-grad:linear-gradient(120deg,#6D3BF5 0%,#3A1FB8 100%);
  --brand-grad-2:linear-gradient(160deg,#3A1FB8 0%,#6D3BF5 55%,#17E0C8 140%);
  --cyan:#17E0C8;
  --orange:#FF7A3D;
  --bg:#F7F6FD;
  --card:#FFFFFF;
  --text:#1E1B2E;
  --muted:#6B6880;
  --border:rgba(58,31,184,.10);
  --border-strong:rgba(58,31,184,.22);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 4px 16px rgba(58,31,184,.06);
  --shadow-2:0 12px 32px rgba(58,31,184,.14);
  --shadow-nav:0 4px 20px rgba(30,27,46,.10);
  --section-pad:72px;
  --gutter:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease,transform .25s ease;}
a:hover{color:var(--brand-1);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
::selection{background:rgba(109,59,245,.18);}

.site-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  padding:14px 0;
  transition:background-color .3s ease,box-shadow .3s ease,padding .3s ease;
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.28);
}
.site-header.is-stuck{
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);
  padding:8px 0;
}
.nav-wrap{display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-grad);
  position:relative;
  box-shadow:0 6px 16px rgba(109,59,245,.35);
  flex-shrink:0;
}
.brand-mark span{
  position:absolute;border-radius:50%;background:#fff;
}
.brand-mark span:nth-child(1){width:8px;height:8px;left:9px;top:9px;opacity:.95;}
.brand-mark span:nth-child(2){width:8px;height:8px;right:9px;bottom:9px;opacity:.72;}
.brand-mark span:nth-child(3){width:6px;height:6px;right:9px;top:9px;background:var(--cyan);}
.brand-text{
  font-size:17px;font-weight:700;letter-spacing:.2px;color:#fff;
  text-shadow:0 1px 8px rgba(30,27,46,.45);
  white-space:nowrap;
}
.site-header.is-stuck .brand-text{color:var(--text);text-shadow:none;}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-menu a{
  font-size:15px;font-weight:500;padding:8px 14px;border-radius:999px;
  color:rgba(255,255,255,.94);
  text-shadow:0 1px 6px rgba(30,27,46,.4);
}
.nav-menu a:hover{background:rgba(255,255,255,.20);color:#fff;}
.nav-menu a.active{background:rgba(255,255,255,.24);color:#fff;font-weight:600;}
.site-header.is-stuck .nav-menu a{color:var(--text);text-shadow:none;}
.site-header.is-stuck .nav-menu a:hover{background:rgba(109,59,245,.08);color:var(--brand-1);}
.site-header.is-stuck .nav-menu a.active{background:rgba(109,59,245,.12);color:var(--brand-1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.16);
  color:#fff;font-size:15px;cursor:pointer;
  transition:all .25s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.34);color:#fff;}
.site-header.is-stuck .icon-btn{border-color:var(--border);background:#fff;color:var(--text);}
.site-header.is-stuck .icon-btn:hover{background:rgba(109,59,245,.08);color:var(--brand-1);border-color:var(--border-strong);}
.btn-nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 20px;border-radius:999px;
  background:var(--brand-grad);color:#fff;font-size:14px;font-weight:600;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 6px 18px rgba(58,31,184,.28);
  transition:all .25s ease;
}
.btn-nav-cta:hover{color:#fff;transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.28),0 10px 24px rgba(58,31,184,.34);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.16);
  color:#fff;font-size:17px;cursor:pointer;align-items:center;justify-content:center;
}
.site-header.is-stuck .nav-toggle{border-color:var(--border);background:#fff;color:var(--text);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(30,27,46,.45);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:1040;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:82%;max-width:360px;
  background:#fff;z-index:1050;padding:26px 22px;
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(30,27,46,.18);
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--border);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text);cursor:pointer;font-size:15px;}
.drawer-links{display:flex;flex-direction:column;margin-top:8px;}
.drawer-links a{
  padding:16px 4px;font-size:17px;font-weight:600;border-bottom:1px solid var(--border);
}
.drawer-links a.active{color:var(--brand-1);}
.drawer-foot{margin-top:auto;padding-top:22px;}
.drawer-foot .btn-nav-cta{width:100%;justify-content:center;padding:13px 20px;font-size:15px;}

/* ============ 按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;border-radius:999px;border:none;
  background:var(--brand-grad);color:#fff;font-size:15px;font-weight:600;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 10px 26px rgba(58,31,184,.26);
  cursor:pointer;transition:all .25s ease;
}
.btn-main:hover{color:#fff;transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 14px 32px rgba(58,31,184,.34);}
.btn-main:active{transform:translateY(1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 4px 12px rgba(58,31,184,.26);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 28px;border-radius:999px;
  background:#fff;color:var(--brand-1);border:1px solid var(--border-strong);
  font-size:15px;font-weight:600;cursor:pointer;transition:all .25s ease;
}
.btn-ghost:hover{background:rgba(109,59,245,.08);color:var(--brand-2);}
.btn-line{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-1);font-weight:600;font-size:15px;
  border-bottom:1px solid rgba(109,59,245,.35);padding-bottom:2px;
}
.btn-line:hover{color:var(--brand-2);border-bottom-color:var(--brand-2);}
.btn-line i{transition:transform .25s ease;}
.btn-line:hover i{transform:translateX(3px);}

/* ============ 通用板块 ============ */
.section{padding:var(--section-pad) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.16em;
  color:var(--brand-1);text-transform:uppercase;margin-bottom:10px;
}
.section-title{font-size:28px;position:relative;padding-left:16px;}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:var(--brand-grad);
}
.section-sub{margin-top:12px;color:var(--muted);font-size:15px;max-width:680px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:170px 0 96px;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(35,17,92,.94) 0%,rgba(58,31,184,.80) 42%,rgba(109,59,245,.42) 100%);
}
.hero::after{
  content:"";position:absolute;
  width:520px;height:520px;border-radius:50%;
  right:-140px;top:-160px;
  background:radial-gradient(circle,rgba(23,224,200,.32) 0%,rgba(23,224,200,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 16px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.32);
  color:#fff;font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:22px;
}
.hero-eyebrow i{color:var(--cyan);}
.hero h1{
  font-size:40px;color:#fff;letter-spacing:.2px;
  text-shadow:0 3px 24px rgba(20,10,50,.42);
}
.hero-sub{
  margin-top:18px;font-size:18px;color:rgba(255,255,255,.9);
  max-width:520px;font-weight:500;
}
.hero-desc{
  margin-top:16px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.78);max-width:540px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-actions .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5);}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;}
.hero-badge{
  display:flex;align-items:baseline;gap:8px;
  padding:10px 18px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.hero-badge b{font-size:19px;color:#fff;font-weight:700;}
.hero-badge span{font-size:13px;color:rgba(255,255,255,.82);}
.hero-visual{position:relative;}
.hero-visual .frame{
  border-radius:var(--radius-lg);overflow:hidden;
  aspect-ratio:4/3;box-shadow:0 24px 60px rgba(15,8,42,.42);
  border:1px solid rgba(255,255,255,.28);
}
.hero-visual .frame img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-24px;bottom:-26px;
  background:#fff;border-radius:var(--radius-md);padding:16px 20px;
  box-shadow:var(--shadow-2);display:flex;align-items:center;gap:14px;max-width:250px;
}
.hero-float .ic{
  width:42px;height:42px;border-radius:12px;background:rgba(23,224,200,.16);
  color:#0FA894;display:flex;align-items:center;justify-content:center;font-size:17px;flex-shrink:0;
}
.hero-float strong{display:block;font-size:14px;line-height:1.4;}
.hero-float small{color:var(--muted);font-size:12px;}

/* ============ 时间线 ============ */
.timeline-block{background:#fff;}
.timeline{position:relative;margin-top:8px;}
.tl-item{
  display:grid;grid-template-columns:118px 42px 1fr;
  align-items:start;padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-time{display:flex;justify-content:flex-end;padding-top:22px;}
.badge-time{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(109,59,245,.10);color:var(--brand-1);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.tl-axis{position:relative;height:100%;min-height:96px;display:flex;justify-content:center;}
.tl-axis::before{
  content:"";position:absolute;top:0;bottom:-26px;width:2px;
  background:linear-gradient(180deg,rgba(109,59,245,.55),rgba(23,224,200,.55));
}
.tl-item:last-child .tl-axis::before{bottom:auto;height:34px;}
.tl-dot{
  position:absolute;top:30px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-grad);
  box-shadow:0 0 0 4px #fff,0 0 0 5px rgba(109,59,245,.22);
}
.tl-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:22px 24px;box-shadow:var(--shadow-1);transition:all .25s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--border-strong);}
.tl-card h3{font-size:18px;margin-bottom:8px;}
.tl-card p{color:var(--muted);font-size:15px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
}
.tag-cyan{background:rgba(23,224,200,.14);color:#0C9C87;border:1px solid rgba(23,224,200,.4);}
.tag-purple{background:rgba(109,59,245,.10);color:var(--brand-1);border:1px solid rgba(109,59,245,.22);}
.tag-orange{background:rgba(255,122,61,.12);color:#D9531A;border:1px solid rgba(255,122,61,.34);}

/* ============ 亮点卡 ============ */
.highlights{background:var(--bg);}
.hl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.hl-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all .25s ease;
  display:flex;flex-direction:column;
}
.hl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--border-strong);}
.hl-figure{aspect-ratio:1/1;overflow:hidden;}
.hl-figure img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.hl-card:hover .hl-figure img{transform:scale(1.04);}
.hl-body{padding:20px 18px 24px;text-align:center;flex-grow:1;}
.hl-body h3{font-size:17px;margin-bottom:8px;}
.hl-body p{font-size:14px;color:var(--muted);line-height:1.7;}
.hl-body .tag{margin-top:14px;}

/* ============ 方案对比 ============ */
.plans{background:#fff;}
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:30px 26px;box-shadow:var(--shadow-1);transition:all .25s ease;
  display:flex;flex-direction:column;height:100%;
}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.plan-card.featured{
  border:1.5px solid var(--brand-1);
  transform:scale(1.04);
  box-shadow:0 16px 44px rgba(58,31,184,.16);
  z-index:2;
}
.plan-card.featured:hover{transform:scale(1.04) translateY(-3px);}
.plan-flag{
  position:absolute;top:-13px;left:26px;
  padding:4px 14px;border-radius:999px;background:var(--orange);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  box-shadow:0 6px 16px rgba(255,122,61,.36);
}
.plan-name{font-size:17px;font-weight:600;color:var(--muted);}
.plan-price{
  margin-top:14px;font-size:34px;font-weight:700;color:var(--brand-1);line-height:1.1;
  display:flex;align-items:baseline;gap:6px;
}
.plan-price small{font-size:14px;font-weight:500;color:var(--muted);}
.plan-note{margin-top:8px;font-size:13px;color:var(--muted);}
.plan-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;flex-grow:1;}
.plan-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text);line-height:1.7;}
.plan-list li i{color:var(--brand-1);font-size:13px;margin-top:6px;flex-shrink:0;}
.plan-card.featured .plan-list li i{color:var(--cyan);}
.plan-card .btn-ghost,.plan-card .btn-main{margin-top:26px;width:100%;}

/* ============ CTA ============ */
.cta-band{padding:0 0 var(--section-pad);}
.cta-card{
  background:var(--brand-grad-2);
  border-radius:var(--radius-lg);
  padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
  box-shadow:0 22px 54px rgba(58,31,184,.26);
}
.cta-card::after{
  content:"";position:absolute;width:380px;height:380px;border-radius:50%;
  right:-120px;bottom:-190px;
  background:radial-gradient(circle,rgba(255,255,255,.22) 0%,rgba(255,255,255,0) 70%);
}
.cta-card h2{color:#fff;font-size:26px;max-width:560px;position:relative;z-index:2;}
.cta-card p{color:rgba(255,255,255,.86);font-size:15px;margin-top:12px;max-width:560px;position:relative;z-index:2;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;position:relative;z-index:2;flex-shrink:0;}
.cta-actions .btn-main{background:#fff;color:var(--brand-2);box-shadow:0 10px 26px rgba(20,10,50,.22);}
.cta-actions .btn-main:hover{color:var(--brand-1);background:#fff;}
.cta-actions .btn-line{color:#fff;border-bottom-color:rgba(255,255,255,.6);}
.cta-actions .btn-line:hover{color:#fff;border-bottom-color:#fff;}

/* ============ 资讯列表 ============ */
.news{background:var(--bg);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);transition:all .25s ease;
  display:flex;flex-direction:column;height:100%;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--border-strong);}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;display:block;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-cat{
  position:absolute;top:12px;left:12px;
  padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.86);color:var(--brand-2);
  font-size:12px;font-weight:600;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex-grow:1;}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body .excerpt{font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.news-meta .read{color:var(--brand-1);font-weight:600;display:inline-flex;align-items:center;gap:5px;}
.news-meta .read i{transition:transform .25s ease;}
.news-card:hover .news-meta .read i{transform:translateX(3px);}
.empty-state{
  min-height:280px;border:1px dashed var(--border-strong);border-radius:var(--radius-lg);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:40px 20px;
}
.empty-state i{font-size:32px;color:rgba(109,59,245,.42);}
.empty-state p{color:var(--muted);font-size:15px;}
.more-row{display:flex;justify-content:center;margin-top:40px;}
.pager{display:flex;align-items:center;gap:8px;}
.pager span,.pager a{
  min-width:38px;height:38px;padding:0 12px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;background:#fff;border:1px solid var(--border);color:var(--muted);
}
.pager a:hover{background:rgba(109,59,245,.08);color:var(--brand-1);border-color:var(--border-strong);}
.pager .current{background:var(--brand-grad);color:#fff;border-color:transparent;}

/* ============ FAQ ============ */
.faq{background:#fff;}
.faq-acc{max-width:920px;margin:0 auto;}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--border);border-left:3px solid transparent;
  border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;
  box-shadow:var(--shadow-1);transition:all .25s ease;
}
.faq-acc .accordion-item:last-child{margin-bottom:0;}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left-color:var(--brand-1);background:#FCFBFF;
}
.faq-acc .accordion-button{
  background:#fff;color:var(--text);font-size:16px;font-weight:600;
  padding:20px 22px;box-shadow:none;display:flex;align-items:center;gap:12px;
  border-radius:0;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--brand-2);box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::after{display:none;}
.faq-acc .accordion-button::before{
  content:"+";order:2;margin-left:auto;font-size:20px;font-weight:400;line-height:1;
  color:var(--brand-1);width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(109,59,245,.08);flex-shrink:0;transition:all .25s ease;
}
.faq-acc .accordion-button:not(.collapsed)::before{content:"−";background:var(--brand-grad);color:#fff;}
.faq-acc .accordion-body{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ============ 页脚 ============ */
.site-footer{background:#180F33;color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;text-shadow:none;}
.footer-brand .brand-mark{box-shadow:0 6px 18px rgba(109,59,245,.5);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);display:inline-block;transition:all .25s ease;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-col li{font-size:14px;color:rgba(255,255,255,.68);line-height:1.7;}
.footer-col li i{color:var(--cyan);margin-right:8px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom span{margin:0 8px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero h1{font-size:34px;}
  .hl-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;row-gap:32px;}
}
@media (max-width:991.98px){
  :root{--section-pad:60px;}
  .nav-menu{display:none;}
  .nav-actions .btn-nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .icon-btn{display:none;}
  .nav-wrap{gap:12px;}
  .hero{padding:140px 0 76px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:32px;}
  .hero-visual{max-width:560px;}
  .hero-float{left:12px;bottom:-22px;}
  .plan-grid{grid-template-columns:1fr;gap:20px;}
  .plan-card.featured{transform:none;order:-1;}
  .plan-card.featured:hover{transform:translateY(-3px);}
  .cta-card{flex-direction:column;align-items:flex-start;padding:38px 30px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  .section-title{font-size:22px;}
  .hero h1{font-size:27px;}
  .hero-sub{font-size:16px;}
  .hero-badges{gap:10px;}
  .hero-badge{padding:8px 14px;}
  .hero-badge b{font-size:17px;}
  .tl-item{grid-template-columns:36px 1fr;padding-bottom:22px;}
  .tl-time{grid-column:2;grid-row:1;justify-content:flex-start;padding:0 0 10px;}
  .tl-axis{grid-column:1;grid-row:1 / span 2;justify-content:center;min-height:auto;}
  .tl-axis::before{top:0;bottom:-22px;}
  .tl-item:last-child .tl-axis::before{height:calc(100% - 30px);}
  .tl-dot{top:8px;left:50%;transform:translateX(-50%);width:12px;height:12px;box-shadow:0 0 0 3px #fff,0 0 0 4px rgba(109,59,245,.22);}
  .tl-card{grid-column:2;grid-row:2;padding:18px 18px;}
  .hl-grid{grid-template-columns:1fr;gap:20px;}
  .hl-figure{aspect-ratio:16/10;}
  .news-grid{grid-template-columns:1fr;gap:20px;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
}
@media (max-width:575.98px){
  :root{--section-pad:48px;--gutter:16px;}
  .site-container{padding-left:16px;padding-right:16px;}
  .hero{padding:126px 0 66px;}
  .hero h1{font-size:24px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .btn-main,.btn-ghost{padding:12px 22px;font-size:14.5px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .cta-card h2{font-size:21px;}
  .cta-card{padding:30px 22px;}
  .faq-acc .accordion-button{font-size:15px;padding:16px 16px;}
  .faq-acc .accordion-body{padding:0 16px 18px;}
}

/* roulang page: article */
:root{
  --brand-1:#6D3BF5;
  --brand-2:#3A1FB8;
  --brand-soft:#F2EFFD;
  --cyan:#17E0C8;
  --orange:#FF7A3D;
  --bg:#F7F6FD;
  --surface:#FFFFFF;
  --text:#1E1B2E;
  --text-sub:#4A4660;
  --muted:#6B6880;
  --border:rgba(58,31,184,.10);
  --border-strong:rgba(109,59,245,.35);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 4px 16px rgba(58,31,184,.06);
  --shadow-2:0 12px 32px rgba(58,31,184,.14);
  --shadow-nav:0 4px 20px rgba(30,27,46,.10);
  --grad:linear-gradient(120deg,#6D3BF5 0%,#3A1FB8 100%);
  --grad-2:linear-gradient(120deg,#3A1FB8 0%,#17E0C8 130%);
  --grad-warm:linear-gradient(120deg,#FF7A3D 0%,#6D3BF5 120%);
  --section-pad:72px;
  --t:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t),background var(--t),transform var(--t)}
a:hover{color:var(--brand-1)}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text)}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  padding:12px 0;
  transition:background var(--t),box-shadow var(--t),padding var(--t);
}
.site-header.is-top{
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.22);
  box-shadow:0 6px 24px rgba(30,27,46,.12);
}
.site-header.is-solid{
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);
  padding:6px 0;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:#fff;letter-spacing:.4px;text-shadow:0 2px 12px rgba(30,27,46,.28)}
.brand:hover{color:#fff}
.is-solid .brand{color:var(--text);text-shadow:none}
.is-solid .brand:hover{color:var(--brand-1)}
.brand-mark{display:inline-flex;gap:4px;align-items:center}
.brand-mark span{width:8px;height:8px;border-radius:50%;box-shadow:0 0 0 2px rgba(255,255,255,.35)}
.brand-mark span:nth-child(1){background:var(--cyan)}
.brand-mark span:nth-child(2){background:#B69BFF}
.brand-mark span:nth-child(3){background:var(--orange)}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
  display:inline-block;
  padding:9px 15px;
  border-radius:var(--radius-pill);
  font-size:15px;
  color:rgba(255,255,255,.9);
  text-shadow:0 1px 10px rgba(30,27,46,.3);
}
.nav-menu a:hover{background:rgba(255,255,255,.18);color:#fff}
.nav-menu a.active{background:rgba(255,255,255,.22);color:#fff;font-weight:600}
.is-solid .nav-menu a{color:var(--muted);text-shadow:none}
.is-solid .nav-menu a:hover{background:rgba(109,59,245,.08);color:var(--brand-1)}
.is-solid .nav-menu a.active{background:rgba(109,59,245,.12);color:var(--brand-1);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.16);
  color:#fff;
  transition:background var(--t),transform var(--t),border-color var(--t);
}
.icon-btn:hover{background:rgba(255,255,255,.3);transform:translateY(-1px)}
.is-solid .icon-btn{background:var(--brand-soft);border-color:var(--border);color:var(--brand-1)}
.is-solid .icon-btn:hover{background:#E7E0FC}
.btn-nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  background:var(--grad);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 6px 18px rgba(58,31,184,.30);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-nav-cta:hover{color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(58,31,184,.38);filter:brightness(1.06)}
.btn-nav-cta:active{transform:translateY(0);box-shadow:0 4px 12px rgba(58,31,184,.3)}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.16);
  color:#fff;
  font-size:17px;
}
.is-solid .nav-toggle{background:var(--brand-soft);border-color:var(--border);color:var(--brand-1)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:158px 0 68px;
  color:#fff;
  overflow:hidden;
  background-image:linear-gradient(115deg,rgba(45,22,140,.94) 0%,rgba(109,59,245,.78) 58%,rgba(23,224,200,.34) 130%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;top:-80px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 68%);
  pointer-events:none;
}
.page-hero .site-container{position:relative;z-index:2}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.82);margin-bottom:18px}
.breadcrumb-nav a{color:rgba(255,255,255,.82)}
.breadcrumb-nav a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.breadcrumb-nav .sep{opacity:.55}
.breadcrumb-nav .current{color:#fff;font-weight:600}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.pill-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  font-size:13px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.35);
  color:#fff;
}
.pill-badge.is-cyan{background:rgba(23,224,200,.18);border-color:rgba(23,224,200,.55)}
.page-title{font-size:40px;font-weight:700;line-height:1.3;letter-spacing:-.5px;margin-bottom:18px;max-width:900px;text-shadow:0 4px 24px rgba(20,10,60,.35)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.86)}
.meta-row i{margin-right:5px;opacity:.85}
.meta-row .dot{opacity:.5}

/* ---------- article ---------- */
.article-section{padding:var(--section-pad) 0 56px}
.article-shell{max-width:840px;margin:0 auto}
.cover-figure{
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  aspect-ratio:16/9;
  margin-bottom:34px;
  background:var(--brand-soft);
}
.cover-figure img{width:100%;height:100%;object-fit:cover}
.article-body{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:44px 46px;
  font-size:17px;
  line-height:1.88;
  color:var(--text-sub);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;
  font-size:24px;
  font-weight:700;
  color:var(--text);
  margin:42px 0 18px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:4px;
  background:var(--grad);
}
.article-body h3{font-size:19px;font-weight:600;color:var(--brand-2);margin:30px 0 12px}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 22px}
.article-body li{margin-bottom:9px}
.article-body ul li::marker{color:var(--brand-1)}
.article-body ol li::marker{color:var(--brand-1);font-weight:600}
.article-body a{color:var(--brand-1);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-2)}
.article-body strong{color:var(--text);font-weight:600}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  background:var(--brand-soft);
  border-left:4px solid var(--brand-1);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-sub);
}
.article-body img{border-radius:14px;margin:24px auto;width:100%;height:auto}
.article-body code{background:var(--brand-soft);border-radius:6px;padding:2px 7px;font-size:.92em;color:var(--brand-2)}
.article-body pre{background:var(--brand-soft);border-radius:14px;padding:18px 20px;overflow:auto;margin:0 0 22px}
.article-body pre code{background:none;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15.5px;border-radius:14px;overflow:hidden;border:1px solid var(--border)}
.article-body th{background:var(--brand-soft);text-align:left;padding:13px 16px;color:var(--text);font-weight:600}
.article-body td{padding:13px 16px;border-top:1px solid var(--border)}
.article-body tbody tr:nth-child(even) td{background:#FAF9FF}
.article-body hr{border:0;height:1px;background:var(--border);margin:34px 0}
.empty-state{
  text-align:center;
  padding:56px 20px;
}
.empty-state i{font-size:40px;color:var(--brand-1);opacity:.7}
.empty-state h2{font-size:22px;margin:18px 0 10px}
.empty-state p{color:var(--muted);margin-bottom:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;
  border-radius:var(--radius-pill);
  background:var(--brand-soft);
  border:1px solid var(--border);
  color:var(--brand-2);
  font-size:13.5px;
  transition:background var(--t),transform var(--t);
}
.tag:hover{background:#E7E0FC;transform:translateY(-1px);color:var(--brand-2)}
.source-card{
  display:flex;
  gap:18px;
  align-items:center;
  padding:22px 24px;
  margin-top:28px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
}
.source-avatar{
  width:56px;height:56px;flex:0 0 56px;
  border-radius:16px;
  background:var(--grad);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:700;
}
.source-card h3{font-size:16px;margin-bottom:4px}
.source-card p{font-size:14px;color:var(--muted);line-height:1.7}
.back-row{text-align:center;margin-top:36px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand-1);
  font-weight:600;
  font-size:15px;
  text-decoration:underline;
  text-underline-offset:4px;
}
.link-arrow i{transition:transform var(--t)}
.link-arrow:hover{color:var(--brand-2)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- related ---------- */
.rec-section{padding:8px 0 var(--section-pad)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:3px;
  color:var(--brand-1);
  font-weight:600;
  margin-bottom:8px;
}
.section-head h2{font-size:28px}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--border-strong);color:inherit}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.rec-card:hover .rec-thumb img{transform:scale(1.04)}
.rec-body{padding:20px}
.rec-body .rec-tag{
  display:inline-block;
  font-size:12px;
  padding:3px 10px;
  border-radius:var(--radius-pill);
  background:rgba(23,224,200,.16);
  color:#0E8F82;
  margin-bottom:10px;
}
.rec-body h3{font-size:16.5px;font-weight:600;line-height:1.55}
.rec-card:hover .rec-body h3{color:var(--brand-1)}

/* ---------- cta ---------- */
.cta-band{padding:0 0 var(--section-pad)}
.cta-card{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:44px 48px;
  border-radius:var(--radius-lg);
  background:linear-gradient(120deg,#3A1FB8 0%,#6D3BF5 62%,#17E0C8 145%);
  color:#fff;
  box-shadow:var(--shadow-2);
}
.cta-card::after{
  content:"";
  position:absolute;
  left:-60px;bottom:-120px;
  width:300px;height:300px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.2),transparent 70%);
  pointer-events:none;
}
.cta-text{position:relative;z-index:2;max-width:640px}
.cta-text h2{color:#fff;font-size:26px;margin-bottom:12px}
.cta-text p{color:rgba(255,255,255,.86);font-size:15.5px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;
  border-radius:var(--radius-pill);
  background:#fff;
  color:var(--brand-2);
  font-weight:700;
  font-size:15px;
  box-shadow:0 8px 22px rgba(20,10,60,.24);
  transition:transform var(--t),box-shadow var(--t),color var(--t);
}
.btn-main:hover{color:var(--brand-2);transform:translateY(-2px);box-shadow:0 14px 30px rgba(20,10,60,.3)}
.btn-main:active{transform:translateY(0)}
.cta-actions .link-arrow{color:#fff;text-decoration-color:rgba(255,255,255,.6)}
.cta-actions .link-arrow:hover{color:#fff;opacity:.9}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 26px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border-strong);
  background:#fff;
  color:var(--brand-1);
  font-weight:600;
  font-size:15px;
  transition:background var(--t),transform var(--t);
}
.btn-ghost:hover{background:rgba(109,59,245,.08);color:var(--brand-1);transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{
  background:#171331;
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:16px;max-width:340px}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:18px;font-weight:600}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.footer-col ul li{font-size:14px;line-height:1.7}
.footer-col ul li i{color:var(--cyan);margin-right:8px}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;display:inline-block}
.footer-col a:hover{color:#fff;transform:translateX(-2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom span{margin:0 10px;opacity:.5}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .page-title{font-size:36px}
}
@media (max-width:991px){
  :root{--section-pad:56px}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(320px,86vw);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:92px 22px 32px;
    background:#fff;
    box-shadow:-14px 0 40px rgba(30,27,46,.18);
    transform:translateX(103%);
    transition:transform .3s ease;
    z-index:120;
    overflow-y:auto;
  }
  .site-header.is-open .nav-menu{transform:translateX(0)}
  .nav-menu a,
  .is-solid .nav-menu a{
    color:var(--text);
    padding:14px 16px;
    border-radius:12px;
    border-bottom:1px solid var(--border);
    font-size:16px;
    text-shadow:none;
  }
  .nav-menu a.active,
  .is-solid .nav-menu a.active{background:rgba(109,59,245,.12);color:var(--brand-1)}
  .nav-menu a:hover{background:rgba(109,59,245,.08);color:var(--brand-1)}
  .page-hero{padding:140px 0 56px}
  .page-title{font-size:32px}
  .article-body{padding:32px 28px;font-size:16.5px}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .cta-card{flex-direction:column;align-items:flex-start;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .site-container{padding:0 16px}
  .btn-nav-cta{display:none}
  .page-hero{padding:126px 0 46px}
  .page-title{font-size:27px}
  .breadcrumb-nav{font-size:12.5px}
  .article-body{padding:24px 20px;font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin:34px 0 14px}
  .article-body h3{font-size:17.5px}
  .article-body table{font-size:14.5px}
  .section-head h2{font-size:23px}
  .rec-grid{grid-template-columns:1fr}
  .cta-text h2{font-size:22px}
  .source-card{flex-direction:column;align-items:flex-start}
}
@media (max-width:575px){
  .brand-text{font-size:16px}
  .pill-badge{font-size:12px;padding:5px 12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cover-figure{border-radius:var(--radius-md)}
  .cta-card{padding:28px 22px}
}

/* roulang page: category1 */
:root{
  --brand-1:#6D3BF5;
  --brand-2:#3A1FB8;
  --brand-grad:linear-gradient(135deg,#6D3BF5 0%,#3A1FB8 100%);
  --brand-grad-2:linear-gradient(125deg,#3A1FB8 0%,#6D3BF5 55%,#17E0C8 145%);
  --cyan:#17E0C8;
  --orange:#FF7A3D;
  --bg:#F7F6FD;
  --surface:#FFFFFF;
  --surface-2:#F1EFFB;
  --text:#1E1B2E;
  --muted:#6B6880;
  --border:rgba(58,31,184,.10);
  --border-strong:rgba(58,31,184,.22);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 4px 16px rgba(58,31,184,.06);
  --shadow-2:0 12px 32px rgba(58,31,184,.14);
  --shadow-nav:0 4px 20px rgba(30,27,46,.10);
  --container:1200px;
  --gutter:24px;
  --section-py:72px;
  --t:.25s ease;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color var(--t),background-color var(--t),transform var(--t);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text);}
h1{font-size:40px;letter-spacing:-.01em;}
h2{font-size:28px;}
h3{font-size:18px;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
.site-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter);}

/* ---------- 品牌标识 ---------- */
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  display:inline-grid;
  grid-template-columns:repeat(2,9px);
  grid-template-rows:repeat(2,9px);
  gap:3px;
  flex:0 0 auto;
}
.brand-mark span{display:block;border-radius:3px;}
.brand-mark span:nth-child(1){background:#6D3BF5;}
.brand-mark span:nth-child(2){background:#17E0C8;}
.brand-mark span:nth-child(3){grid-column:span 2;background:linear-gradient(90deg,#6D3BF5,#FF7A3D);}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:absolute;
  top:0;left:0;right:0;
  z-index:1000;
  padding:14px 0;
  transition:background .3s ease,box-shadow .3s ease,padding .3s ease,border-color .3s ease;
}
.site-header.is-top{
  background:rgba(255,255,255,.14);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.24);
  box-shadow:0 4px 20px rgba(30,27,46,.10);
}
.site-header.is-scrolled{
  position:fixed;
  background:#FFFFFF;
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);
  padding:8px 0;
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.site-header.is-top .brand-text{color:#fff;text-shadow:0 1px 6px rgba(30,27,46,.28);}
.site-header.is-scrolled .brand-text{color:var(--text);}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{
  padding:8px 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:500;
  color:var(--text);
  white-space:nowrap;
  transition:background-color var(--t),color var(--t);
}
.site-header.is-top .nav-menu a{color:rgba(255,255,255,.92);text-shadow:0 1px 6px rgba(30,27,46,.26);}
.site-header.is-top .nav-menu a:hover{color:#fff;background:rgba(255,255,255,.18);}
.site-header.is-top .nav-menu a.active{color:#fff;background:rgba(255,255,255,.22);}
.site-header.is-scrolled .nav-menu a:hover{color:var(--brand-2);background:rgba(109,59,245,.08);}
.site-header.is-scrolled .nav-menu a.active{color:var(--brand-2);background:rgba(109,59,245,.10);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:var(--surface);
  color:var(--brand-2);
  cursor:pointer;
  transition:background-color var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.site-header.is-top .icon-btn{
  color:#fff;
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.38);
}
.icon-btn:hover{transform:translateY(-1px);}
.site-header.is-scrolled .icon-btn:hover{background:rgba(109,59,245,.08);color:var(--brand-1);}
.btn-nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  background:var(--brand-grad);
  color:#fff;
  font-size:15px;
  font-weight:600;
  box-shadow:0 8px 18px rgba(109,59,245,.26),inset 0 1px 0 rgba(255,255,255,.32);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-nav-cta:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 24px rgba(109,59,245,.32);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);
  background:rgba(255,255,255,.16);
  color:#fff;
  cursor:pointer;
  position:relative;
  z-index:1001;
}
.site-header.is-scrolled .nav-toggle{color:var(--text);background:var(--surface);}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  background:var(--brand-grad-2);
  padding:172px 0 72px;
  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:.26;
}
.page-banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(31,14,86,.86) 0%,rgba(58,31,184,.62) 52%,rgba(23,224,200,.28) 100%);
}
.page-banner::before{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-120px;top:-140px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  z-index:1;
}
.banner-inner{position:relative;z-index:2;}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  margin-bottom:20px;
}
.breadcrumb-nav a{color:rgba(255,255,255,.82);}
.breadcrumb-nav a:hover{color:#fff;text-decoration:underline;}
.breadcrumb-nav .sep{opacity:.6;}
.breadcrumb-nav .current{color:#fff;font-weight:600;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--brand-1);
}
.page-banner .eyebrow{color:#9BF4E8;letter-spacing:.16em;}
.page-banner h1{
  color:#fff;
  font-size:40px;
  margin:14px 0 14px;
  text-shadow:0 2px 14px rgba(20,10,60,.28);
}
.banner-sub{
  font-size:17px;
  color:rgba(255,255,255,.88);
  max-width:660px;
}
.banner-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.32);
  font-size:13px;
  color:#fff;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.badge-pill i{color:var(--cyan);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-py) 0;}
.section-surface{background:#fff;}
.section-head{margin-bottom:40px;max-width:780px;}
.section-head h2{position:relative;padding-left:16px;margin:12px 0 12px;}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:4px;border-radius:4px;
  background:var(--brand-grad);
}
.section-head .section-sub{padding-left:16px;color:var(--muted);font-size:16px;}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:44px;}
.stat-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:22px 20px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.stat-num{
  font-size:30px;
  font-weight:700;
  line-height:1.2;
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{font-size:14px;color:var(--muted);margin-top:6px;}

/* ---------- 卡片栅格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.info-card{
  display:flex;flex-direction:column;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  height:100%;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--border-strong);}
.thumb{position:relative;overflow:hidden;background:var(--surface-2);}
.ratio-4-3{aspect-ratio:4/3;}
.ratio-16-9{aspect-ratio:16/9;}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.info-card:hover .thumb img{transform:scale(1.04);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(23,224,200,.55);
  background:rgba(23,224,200,.10);
  color:#0B8C7E;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  width:fit-content;
}
.card-body p{color:var(--muted);font-size:15px;}
.tick-list{display:grid;gap:8px;margin-top:2px;}
.tick-list li{
  position:relative;
  padding-left:24px;
  font-size:14px;
  color:var(--text);
}
.tick-list li::before{
  content:"";
  position:absolute;left:0;top:7px;
  width:14px;height:14px;
  border-radius:50%;
  background:rgba(109,59,245,.12);
  box-shadow:inset 0 0 0 4px rgba(109,59,245,.28);
}
.tick-list li::after{
  content:"";
  position:absolute;left:4px;top:11px;
  width:6px;height:3px;
  border-left:2px solid var(--brand-1);
  border-bottom:2px solid var(--brand-1);
  transform:rotate(-45deg);
}

/* ---------- 步骤 ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step-card{
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:28px 24px 26px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--border-strong);}
.step-num{
  display:block;
  font-size:28px;
  font-weight:700;
  line-height:1.1;
  margin-bottom:12px;
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.step-card h3{margin-bottom:8px;}
.step-card p{color:var(--muted);font-size:14.5px;}

/* ---------- 要点清单 ---------- */
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.point-item{
  display:flex;gap:16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.point-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(23,224,200,.5);}
.point-icon{
  flex:0 0 auto;
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);
  background:rgba(109,59,245,.10);
  color:var(--brand-1);
  font-size:16px;
}
.point-item h3{margin-bottom:6px;font-size:17px;}
.point-item p{color:var(--muted);font-size:14.5px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color var(--t),background-color var(--t),box-shadow var(--t);
}
.faq-item.is-open{
  border-left:3px solid var(--brand-1);
  background:#FDFCFF;
  box-shadow:var(--shadow-2);
}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  background:none;border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
}
.faq-q:hover{color:var(--brand-2);}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:rgba(109,59,245,.10);
  color:var(--brand-1);
  font-size:13px;
  transition:transform .3s ease,background-color var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-grad);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a-inner{padding:0 22px 20px;color:var(--muted);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--brand-grad-2);
  border-radius:24px;
  padding:46px 48px;
  color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:0 18px 40px rgba(58,31,184,.22);
}
.cta-band::before{
  content:"";
  position:absolute;
  width:320px;height:320px;
  right:-90px;bottom:-160px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
}
.cta-copy{position:relative;z-index:2;max-width:640px;}
.cta-copy h2{color:#fff;margin-bottom:10px;}
.cta-copy p{color:rgba(255,255,255,.86);font-size:15.5px;}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  background:var(--brand-grad);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:0;
  cursor:pointer;
  box-shadow:0 10px 22px rgba(109,59,245,.30),inset 0 1px 0 rgba(255,255,255,.34);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-main:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.07);box-shadow:0 16px 30px rgba(109,59,245,.36);}
.btn-main:active{transform:translateY(1px);box-shadow:0 6px 14px rgba(109,59,245,.26);}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--radius-pill);
  background:#fff;
  color:var(--brand-2);
  border:1px solid var(--border-strong);
  font-size:15px;
  font-weight:600;
  transition:background-color var(--t),color var(--t),transform var(--t),border-color var(--t);
}
.btn-outline:hover{background:rgba(109,59,245,.08);color:var(--brand-1);transform:translateY(-1px);border-color:var(--brand-1);}
.btn-on-dark{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  background:#fff;
  color:var(--brand-2);
  font-size:15px;
  font-weight:600;
  box-shadow:0 10px 24px rgba(20,10,60,.24);
  transition:transform var(--t),box-shadow var(--t),color var(--t);
}
.btn-on-dark:hover{color:var(--brand-1);transform:translateY(-1px);box-shadow:0 16px 30px rgba(20,10,60,.3);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-1);
}
.link-more i{transition:transform var(--t);}
.link-more:hover i{transform:translateX(3px);}
.cta-band .link-plain{
  display:inline-flex;align-items:center;
  color:#fff;
  font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.55);
  padding-bottom:2px;
}
.cta-band .link-plain:hover{color:#9BF4E8;border-color:#9BF4E8;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#16112F;
  color:#C7C3E2;
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9E99C0;max-width:340px;}
.footer-col h4{
  font-size:16px;
  color:#fff;
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:14px;color:#9E99C0;}
.footer-col a{color:#C7C3E2;font-size:14px;}
.footer-col a:hover{color:var(--cyan);padding-left:2px;}
.footer-col li i{color:var(--cyan);margin-right:8px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0;
  text-align:center;
  font-size:13px;
  color:#8B85B0;
}
.footer-bottom span{margin:0 8px;opacity:.5;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  :root{--gutter:22px;}
  h1{font-size:36px;}
  .page-banner h1{font-size:36px;}
}
@media (max-width:992px){
  :root{--section-py:60px;}
  h1{font-size:32px;}
  .page-banner{padding:150px 0 60px;}
  .page-banner h1{font-size:32px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .step-grid{grid-template-columns:repeat(2,1fr);}
  .point-grid{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-menu{
    position:fixed;
    top:0;right:0;
    width:min(330px,88vw);
    height:100vh;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:92px 20px 28px;
    transform:translateX(103%);
    transition:transform .3s ease;
    box-shadow:-10px 0 34px rgba(30,27,46,.18);
    z-index:999;
    overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .site-header.is-top .nav-menu a,
  .site-header.is-scrolled .nav-menu a{
    color:var(--text);
    text-shadow:none;
    padding:15px 10px;
    border-bottom:1px solid var(--border);
    border-radius:0;
    font-size:17px;
  }
  .site-header.is-top .nav-menu a.active,
  .site-header.is-scrolled .nav-menu a.active{
    color:var(--brand-1);
    background:transparent;
  }
  .site-header.is-top .nav-menu a:hover{background:rgba(109,59,245,.06);color:var(--brand-1);}
  .btn-nav-cta{padding:9px 16px;font-size:14px;}
}
@media (max-width:768px){
  :root{--gutter:16px;--section-py:48px;}
  body{font-size:15px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  .page-banner{padding:132px 0 48px;}
  .page-banner h1{font-size:26px;margin:12px 0 12px;}
  .banner-sub{font-size:15px;}
  .grid-3{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .stats-row{grid-template-columns:1fr 1fr;gap:16px;}
  .stat-num{font-size:25px;}
  .section-head h2{font-size:22px;}
  .section-head .section-sub{padding-left:16px;font-size:15px;}
  .cta-band{padding:32px 24px;border-radius:20px;}
  .btn-main,.btn-outline,.btn-on-dark{padding:12px 22px;font-size:14px;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.5px;}
}
@media (max-width:576px){
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .stats-row{grid-template-columns:1fr;}
  .btn-nav-cta{display:none;}
  .badge-pill{font-size:12px;padding:7px 13px;}
  .page-banner h1{font-size:23px;}
}
@media (max-width:400px){
  .brand-text{font-size:16px;}
  .page-banner h1{font-size:21px;}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --brand-1:#6D3BF5;
  --brand-2:#3A1FB8;
  --brand-3:#8A5CFF;
  --cyan:#17E0C8;
  --orange:#FF7A3D;
  --grad-main:linear-gradient(120deg,#6D3BF5 0%,#3A1FB8 100%);
  --grad-deep:linear-gradient(135deg,#3A1FB8 0%,#6D3BF5 62%,#8A5CFF 100%);
  --grad-soft:linear-gradient(120deg,rgba(109,59,245,.10),rgba(23,224,200,.14));
  --bg:#F7F6FD;
  --card:#FFFFFF;
  --text:#1E1B2E;
  --muted:#6B6880;
  --border:rgba(58,31,184,.10);
  --border-strong:rgba(109,59,245,.45);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 4px 16px rgba(58,31,184,.06);
  --shadow-2:0 12px 32px rgba(58,31,184,.14);
  --shadow-3:0 4px 20px rgba(30,27,46,.10);
  --section-pad:72px;
  --container:1200px;
  --t:.25s ease;
}

/* ===================== 基础 reset ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);}
a:hover{color:var(--brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.2px;color:var(--text);}
p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px;}

/* ===================== 容器与通用 ===================== */
.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--section-pad) 0;}
.section-alt{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:var(--brand-1);
  background:var(--grad-soft);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:14px;
}
.section-head h2{font-size:28px;margin-bottom:12px;}
.section-head .section-sub{color:var(--muted);font-size:15px;}
.section-head h2::after{
  content:"";
  display:block;
  width:48px;
  height:3px;
  border-radius:3px;
  background:var(--grad-main);
  margin-top:14px;
}
.section-head.center h2::after{margin-left:auto;margin-right:auto;}

/* ===================== 按钮 ===================== */
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 30px;
  border-radius:999px;
  background:var(--grad-main);
  color:#fff;
  font-size:15px;
  font-weight:600;
  border:0;
  box-shadow:0 8px 20px rgba(58,31,184,.24),inset 0 1px 0 rgba(255,255,255,.28);
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-main:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 12px 26px rgba(58,31,184,.30),inset 0 1px 0 rgba(255,255,255,.32);}
.btn-main:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(58,31,184,.24);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 28px;
  border-radius:999px;
  background:#fff;
  color:var(--brand-1);
  border:1px solid var(--border-strong);
  font-size:15px;
  font-weight:600;
}
.btn-ghost:hover{background:rgba(109,59,245,.08);color:var(--brand-2);}
.btn-ghost-light{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 28px;
  border-radius:999px;
  background:transparent;
  color:#fff;
  border:1px solid rgba(255,255,255,.55);
  font-size:15px;
  font-weight:600;
}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.92);
  border-bottom:1px solid rgba(255,255,255,.4);
  padding-bottom:2px;
}
.link-arrow i{transition:transform var(--t);}
.link-arrow:hover{color:#fff;}
.link-arrow:hover i{transform:translateX(3px);}

/* ===================== 导航 ===================== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-top{
  background:rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.30);
  box-shadow:0 4px 20px rgba(30,27,46,.08);
}
.site-header.is-solid{
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-3);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:24px;
  height:76px;
  transition:height var(--t);
}
.site-header.is-solid .nav-wrap{height:66px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-size:18px;
  font-weight:700;
  white-space:nowrap;
  flex-shrink:0;
}
.brand:hover{color:var(--brand-2);}
.brand-mark{
  display:inline-flex;
  align-items:flex-end;
  gap:3px;
  width:28px;
  height:24px;
  flex-shrink:0;
}
.brand-mark span{width:7px;border-radius:3px;display:block;background:var(--grad-main);}
.brand-mark span:nth-child(1){height:13px;}
.brand-mark span:nth-child(2){height:22px;}
.brand-mark span:nth-child(3){height:17px;background:linear-gradient(180deg,#17E0C8,#6D3BF5);}
.brand-text{letter-spacing:.4px;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:18px;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:6px 0;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--grad-main);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-menu a:hover{color:var(--brand-1);}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--brand-1);font-weight:600;}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.icon-btn{
  width:40px;height:40px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.6);
  color:var(--text);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.icon-btn:hover{background:#fff;color:var(--brand-1);border-color:var(--border-strong);transform:translateY(-1px);}
.site-header.is-solid .icon-btn{border-color:var(--border);background:#fff;}
.btn-nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 22px;
  border-radius:999px;
  background:var(--grad-main);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 6px 18px rgba(58,31,184,.24);
  white-space:nowrap;
}
.btn-nav-cta:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.45);
  background:rgba(255,255,255,.6);
  color:var(--text);
  align-items:center;
  justify-content:center;
  font-size:17px;
}
.site-header.is-solid .nav-toggle{border-color:var(--border);background:#fff;}

/* ===================== 页面横幅 ===================== */
.page-hero{
  position:relative;
  padding:150px 0 74px;
  color:#fff;
  background-image:
    linear-gradient(115deg,rgba(30,16,74,.94) 0%,rgba(58,31,184,.86) 42%,rgba(109,59,245,.62) 72%,rgba(23,224,200,.32) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-160px;top:-200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,200,.30),rgba(23,224,200,0) 70%);
  pointer-events:none;
}
.page-hero::after{
  content:"";
  position:absolute;
  width:380px;height:380px;
  left:-140px;bottom:-200px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  pointer-events:none;
}
.page-hero .site-container{position:relative;z-index:2;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb span.sep{color:rgba(255,255,255,.5);}
.crumb-current{color:#fff;font-weight:600;}
.page-hero .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  color:#fff;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  border-radius:999px;
  padding:6px 16px;
  margin-bottom:18px;
}
.page-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.25;
  margin-bottom:16px;
  max-width:820px;
}
.page-hero .hero-lead{
  font-size:17px;
  color:rgba(255,255,255,.86);
  max-width:680px;
  margin-bottom:30px;
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.badge-pill{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:9px 18px;
  border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.26);
  color:#fff;
  font-size:13px;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.badge-pill b{font-size:17px;font-weight:700;letter-spacing:.5px;}

/* ===================== 交替图文 ===================== */
.zigzag{display:flex;flex-direction:column;gap:56px;}
.zigzag-item{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
.zigzag-item:nth-child(even) .zigzag-media{order:2;}
.zigzag-item:nth-child(even) .zigzag-body{order:1;}
.zigzag-media{
  border-radius:var(--radius-lg);
  overflow:hidden;
  aspect-ratio:16/10;
  box-shadow:var(--shadow-1);
  border:1px solid var(--border);
  background:var(--grad-soft);
  transition:box-shadow var(--t),transform var(--t);
}
.zigzag-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.zigzag-item:hover .zigzag-media{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.zigzag-item:hover .zigzag-media img{transform:scale(1.03);}
.zigzag-body h3{font-size:20px;margin-bottom:12px;font-weight:600;}
.zigzag-body p{color:var(--muted);font-size:15px;}
.tag-soft{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand-1);
  background:rgba(109,59,245,.10);
  border:1px solid rgba(109,59,245,.18);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:12px;
}
.tag-cyan{color:#0E9E8D;background:rgba(23,224,200,.14);border-color:rgba(23,224,200,.32);}
.mini-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.mini-list li{
  font-size:13px;
  color:var(--muted);
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:999px;
  padding:4px 13px;
}

/* ===================== 步骤清单 ===================== */
.step-list{display:flex;flex-direction:column;gap:16px;max-width:960px;margin:0 auto;}
.step-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:22px;
  align-items:start;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:26px 28px;
  box-shadow:var(--shadow-1);
  transition:box-shadow var(--t),transform var(--t),border-color var(--t);
}
.step-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--border-strong);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:52px;height:52px;
  border-radius:14px;
  background:linear-gradient(120deg,rgba(109,59,245,.14),rgba(23,224,200,.18));
  color:var(--brand-2);
  font-size:16px;
  font-weight:700;
  letter-spacing:.5px;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step-item p{color:var(--muted);font-size:15px;}

/* ===================== 安全提醒面板 ===================== */
.tip-panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.tip-row{
  display:grid;
  grid-template-columns:58px 1fr;
  gap:20px;
  align-items:start;
  padding:26px 30px;
  border-bottom:1px solid var(--border);
  transition:background-color var(--t);
}
.tip-row:last-child{border-bottom:0;}
.tip-row:hover{background:rgba(109,59,245,.035);}
.tip-icon{
  width:52px;height:52px;
  border-radius:16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  color:#fff;
  background:var(--grad-main);
  box-shadow:0 8px 18px rgba(58,31,184,.20);
}
.tip-icon.alt{background:linear-gradient(135deg,#17E0C8,#0E9E8D);box-shadow:0 8px 18px rgba(14,158,141,.22);}
.tip-icon.warm{background:linear-gradient(135deg,#FF9A5B,#FF7A3D);box-shadow:0 8px 18px rgba(255,122,61,.24);}
.tip-row h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.tip-row p{color:var(--muted);font-size:15px;}

/* ===================== CTA ===================== */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  padding:48px 52px;
  background:var(--grad-deep);
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:34px;
  box-shadow:0 18px 44px rgba(58,31,184,.24);
}
.cta-band::after{
  content:"";
  position:absolute;
  width:420px;height:420px;
  right:-120px;top:-180px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,200,.30),rgba(23,224,200,0) 70%);
  pointer-events:none;
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.84);font-size:15px;max-width:620px;}
.cta-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex-shrink:0;
  position:relative;
  z-index:2;
}
.cta-band .cta-text{position:relative;z-index:2;}
.cta-band .btn-main{
  background:#fff;
  color:var(--brand-2);
  box-shadow:0 10px 24px rgba(20,10,60,.24);
}
.cta-band .btn-main:hover{color:var(--brand-2);background:#fff;}

/* ===================== 页脚 ===================== */
.site-footer{
  background:#14102A;
  color:rgba(255,255,255,.72);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:18px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.60);
  max-width:340px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{
  font-size:14px;
  color:rgba(255,255,255,.66);
  display:inline-block;
}
.footer-col ul li a:hover{color:var(--cyan);transform:translateX(2px);}
.footer-col ul li{
  font-size:14px;
  color:rgba(255,255,255,.66);
  display:flex;
  align-items:flex-start;
  gap:8px;
  line-height:1.7;
}
.footer-col ul li i{color:var(--cyan);margin-top:4px;font-size:13px;}
.footer-bottom{
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.48);
  padding:22px 0 28px;
  letter-spacing:.4px;
}
.footer-bottom span{margin:0 8px;color:rgba(255,255,255,.22);}

/* ===================== 响应式 ===================== */
@media (max-width:1199.98px){
  .page-hero h1{font-size:34px;}
  .nav-menu{gap:22px;}
}
@media (max-width:991.98px){
  :root{--section-pad:56px;}
  .hero-badges{gap:10px;}
  .zigzag-item{grid-template-columns:1fr;gap:22px;}
  .zigzag-item:nth-child(even) .zigzag-media{order:0;}
  .zigzag-item:nth-child(even) .zigzag-body{order:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
  .cta-actions{flex-wrap:wrap;}

  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:fixed;
    top:84px;
    left:16px;
    right:16px;
    margin-left:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:#fff;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-2);
    border:1px solid var(--border);
    padding:14px;
    display:none;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{
    padding:13px 14px;
    border-radius:12px;
    font-size:16px;
    color:var(--text);
  }
  .nav-menu a::after{display:none;}
  .nav-menu a:hover{background:rgba(109,59,245,.07);color:var(--brand-1);}
  .nav-menu a.active{background:rgba(109,59,245,.10);color:var(--brand-1);}
}
@media (max-width:767.98px){
  .site-container{padding:0 18px;}
  .btn-nav-cta,.icon-btn{display:none;}
  .page-hero{padding:124px 0 56px;}
  .page-hero h1{font-size:28px;}
  .page-hero .hero-lead{font-size:15px;}
  .section-head h2{font-size:22px;}
  .step-item{grid-template-columns:1fr;gap:14px;padding:22px;}
  .step-num{width:46px;height:46px;}
  .tip-row{grid-template-columns:1fr;gap:14px;padding:22px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-band h2{font-size:21px;}
  .brand{font-size:16px;}
}
@media (max-width:575.98px){
  :root{--section-pad:48px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-desc{max-width:100%;}
  .hero-badges{gap:8px;}
  .badge-pill{padding:7px 14px;font-size:12px;}
  .badge-pill b{font-size:15px;}
  .zigzag{gap:40px;}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%;}
  .cta-actions .btn-main{justify-content:center;}
  .nav-menu{top:78px;left:12px;right:12px;}
}