/* roulang page: index */
/* ================= 设计变量 ================= */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1740B8;
  --brand-soft:#EAF0FF;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --violet:#7C5CFF;
  --amber:#F5A524;
  --nav-bg:#0A1024;
  --nav-bg-2:#0E1630;
  --bg:#F6F8FC;
  --paper:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6475;
  --border:#E3E9F5;
  --ok:#1FA971;
  --warn:#E6A23C;
  --err:#E45757;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --sh-1:0 10px 30px rgba(16,34,74,.08);
  --sh-2:0 16px 44px rgba(16,34,74,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:150px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--cyan)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:3px solid rgba(56,232,255,.45);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
/* ================= 容器 ================= */
.container{width:100%;margin:0 auto;padding-left:20px;padding-right:20px;max-width:1320px}
@media (max-width:1399.98px){.container{max-width:1140px}}
@media (max-width:1199.98px){.container{max-width:960px}}
@media (max-width:991.98px){.container{max-width:720px}}
@media (max-width:767.98px){.container{max-width:100%;padding-left:16px;padding-right:16px}}
.section{padding:88px 0}
.section--tight{padding:64px 0}
@media (max-width:991.98px){.section{padding:64px 0}.section--tight{padding:48px 0}}
@media (max-width:575.98px){.section{padding:52px 0}.section--tight{padding:40px 0}}
/* ================= 通用标题 ================= */
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--neon),var(--violet))}
.sec-title{font-size:clamp(1.6rem,2.6vw,2.25rem);line-height:1.28;font-weight:800;letter-spacing:-.01em}
.sec-desc{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8}
/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;padding:13px 24px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease);text-align:center;
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(31,79,216,.18)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.28)}
.btn-outline-brand{background:#fff;border-color:#C6D4F5;color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.22)}
.btn-neon{background:transparent;border-color:rgba(56,232,255,.6);color:#B8F4FF}
.btn-neon:hover{background:rgba(56,232,255,.14);border-color:var(--neon);color:#fff;box-shadow:0 0 20px rgba(56,232,255,.35)}
.btn-amber{background:var(--amber);border-color:var(--amber);color:#241700}
.btn-amber:hover{background:#FFB93D;border-color:#FFB93D;color:#241700;transform:translateY(-2px);box-shadow:0 8px 22px rgba(245,165,36,.35)}
.btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(199,210,232,.28);color:#D7E0F2}
.btn-ghost:hover{background:rgba(56,232,255,.12);border-color:rgba(56,232,255,.55);color:#fff}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
/* ================= 徽章 / 标签 ================= */
.badge-soft{display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:#1A3AA8;font-size:13px;font-weight:600;padding:5px 12px;border-radius:999px}
.badge-cyan{background:rgba(18,184,200,.12);color:#0B7C88}
.badge-amber{background:rgba(245,165,36,.16);color:#95600A}
.badge-line{background:transparent;border:1px solid var(--border);color:var(--muted)}
.tagrow{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#37508A;background:#fff;border:1px solid var(--border);padding:6px 13px;border-radius:999px;box-shadow:0 2px 8px rgba(16,34,74,.04)}
/* ================= Header / Nav ================= */
.site-header{position:sticky;top:0;z-index:1040;background:var(--nav-bg);border-bottom:1px solid rgba(56,232,255,.18)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,rgba(56,232,255,0),var(--neon),var(--violet),rgba(124,92,255,0));opacity:.95;pointer-events:none}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;letter-spacing:.02em;white-space:nowrap}
.brand:hover{color:#fff}
.brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--neon),var(--violet));color:#06122B;font-size:15px;font-weight:900;box-shadow:0 0 18px rgba(56,232,255,.45)}
.brand-text{display:inline-block}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{position:relative;padding:10px 14px;font-size:15px;color:#C3CEE6;border-radius:10px;transition:color .2s var(--ease)}
.main-nav a:hover{color:#B8F4FF}
.main-nav a.active{color:#fff;font-weight:600}
.main-nav a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px var(--neon)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:rgba(56,232,255,.1);border:1px solid rgba(56,232,255,.35);color:#B8F4FF;font-size:17px;cursor:pointer;transition:.2s var(--ease)}
.nav-toggle:hover{background:rgba(56,232,255,.2);color:#fff}
@media (max-width:1199.98px){
  .main-nav a{padding:10px 10px;font-size:14px}
}
@media (max-width:991.98px){
  .nav-wrap{height:56px}
  .main-nav{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:grid;place-items:center}
  .brand{font-size:16px}
  .brand-mark{width:30px;height:30px;flex-basis:30px;font-size:13px}
}
/* 移动端抽屉 */
.site-drawer{background:var(--nav-bg-2);color:#DCE4F5;width:310px!important;border-left:1px solid rgba(56,232,255,.22)}
.site-drawer .offcanvas-header{padding:18px 20px;border-bottom:1px solid rgba(255,255,255,.08)}
.site-drawer .drawer-title{color:#fff;font-weight:800;font-size:16px}
.btn-close-drawer{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#C7D2E8;cursor:pointer}
.btn-close-drawer:hover{background:rgba(56,232,255,.16);color:#fff}
.site-drawer .offcanvas-body{padding:14px 14px 20px}
.drawer-nav{display:flex;flex-direction:column;gap:0}
.drawer-nav a{display:block;padding:14px 14px;border-radius:12px;color:#C7D2E8;font-size:15px;border-bottom:1px solid rgba(255,255,255,.05)}
.drawer-nav a:hover{background:rgba(56,232,255,.1);color:#fff}
.drawer-nav a.active{background:rgba(56,232,255,.14);color:#fff;font-weight:600;box-shadow:inset 3px 0 0 var(--neon)}
.drawer-cta{padding:16px 20px calc(20px + env(safe-area-inset-bottom));border-top:1px solid rgba(255,255,255,.08)}
.drawer-cta .btn{width:100%}
/* ================= 锚点条 ================= */
.anchor-bar{position:sticky;top:68px;z-index:1030;background:var(--nav-bg-2);border-bottom:1px solid rgba(255,255,255,.07)}
.anchor-scroll{display:flex;align-items:center;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-link{position:relative;white-space:nowrap;padding:8px 16px;border-radius:999px;font-size:14px;color:#A9B6D0;transition:.2s var(--ease)}
.anchor-link:hover{color:#B8F4FF;background:rgba(56,232,255,.08)}
.anchor-link.active{color:#fff;background:rgba(56,232,255,.14);box-shadow:0 0 0 1px rgba(56,232,255,.45),0 0 16px rgba(56,232,255,.22)}
@media (max-width:991.98px){.anchor-bar{top:56px}.anchor-link{font-size:13px;padding:7px 13px}}
/* ================= Hero ================= */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#EDF3FF 0%,#F6F8FC 100%);padding:70px 0 66px}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 320px at 88% 12%,rgba(56,232,255,.18),transparent 70%),
  radial-gradient(520px 300px at 10% 92%,rgba(31,79,216,.10),transparent 72%);pointer-events:none}
.hero-inner{position:relative;z-index:1;display:flex;align-items:center;min-height:calc(72vh - 68px)}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);color:#28427F;font-size:13px;font-weight:600;padding:7px 14px;border-radius:999px;box-shadow:0 4px 14px rgba(16,34,74,.06)}
.hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(31,169,113,.15)}
.hero h1{font-size:clamp(2.2rem,4.1vw,3.5rem);line-height:1.18;font-weight:800;letter-spacing:-.02em;margin:20px 0 0}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.85;color:var(--muted);max-width:600px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.trust-item{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:10px 16px;font-size:14px;color:#2C3A52;box-shadow:0 6px 18px rgba(16,34,74,.05)}
.trust-item i{color:var(--cyan)}
.hero-visual{position:relative;padding:14px}
.hero-visual img{border-radius:24px;box-shadow:0 26px 60px rgba(16,34,74,.18);position:relative;z-index:1;width:100%;aspect-ratio:3/2;object-fit:cover}
.hero-visual::before{content:"";position:absolute;inset:-8% -6% 12% 8%;border-radius:32px;background:linear-gradient(140deg,rgba(56,232,255,.22),rgba(124,92,255,.16));filter:blur(6px);z-index:0}
.float-chip{position:absolute;z-index:2;background:#fff;border:1px solid var(--border);border-radius:14px;padding:10px 15px;font-size:13px;font-weight:600;color:#22314F;box-shadow:0 12px 30px rgba(16,34,74,.14);display:flex;align-items:center;gap:8px}
.float-chip i{color:var(--brand)}
.chip-1{left:-6px;bottom:52px}
.chip-2{right:-4px;top:34px}
@media (max-width:991.98px){
  .hero{padding:44px 0 46px}
  .hero-inner{min-height:auto}
  .hero-visual{margin-top:38px}
  .chip-1{left:6px;bottom:14px}
  .chip-2{right:6px;top:8px}
}
@media (max-width:575.98px){
  .hero-cta .btn{width:100%}
  .trust-item{width:100%}
}
/* ================= 卡片通用 ================= */
.card-x{background:var(--paper);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);overflow:hidden}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D5E0F5}
.card-body-x{padding:26px}
@media (max-width:575.98px){.card-body-x{padding:20px}}
/* ================= 卖点区 ================= */
.panel-white{background:#fff}
.feature-main{display:flex;flex-direction:column;height:100%}
.feature-main .fig{position:relative;overflow:hidden}
.feature-main .fig img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.feature-main:hover .fig img{transform:scale(1.03)}
.feature-main h3{font-size:1.375rem;font-weight:800;margin:16px 0 12px;line-height:1.35}
.feature-main p{color:var(--muted);font-size:15.5px;line-height:1.8}
.feature-strip{display:flex;gap:18px;align-items:flex-start;height:auto}
.feature-strip .ico{width:50px;height:50px;flex:0 0 50px;border-radius:15px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:19px}
.feature-strip h4{font-size:17px;font-weight:800;margin-bottom:8px}
.feature-strip p{color:var(--muted);font-size:14.5px;line-height:1.78}
.mini-num{font-size:13px;font-weight:800;color:var(--cyan);letter-spacing:.12em}
/* ================= 演示区 ================= */
.demo-steps{display:flex;flex-direction:column;gap:0}
.demo-step{position:relative;padding:0 0 26px 52px}
.demo-step:last-child{padding-bottom:0}
.demo-step::before{content:"";position:absolute;left:17px;top:34px;bottom:0;width:2px;background:linear-gradient(180deg,rgba(18,184,200,.55),rgba(18,184,200,.06))}
.demo-step:last-child::before{display:none}
.demo-step .node{position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#fff;border:2px solid #C9DCF2;color:#3A5480;font-size:13px;font-weight:800;transition:.25s var(--ease)}
.demo-step.is-current .node{border-color:var(--neon);color:#0A1024;background:linear-gradient(135deg,var(--neon),#8FE9FF);box-shadow:0 0 0 6px rgba(56,232,255,.16),0 0 18px rgba(56,232,255,.5)}
.demo-step h4{font-size:16.5px;font-weight:800;margin-bottom:6px}
.demo-step p{color:var(--muted);font-size:14.5px;line-height:1.75}
.browser-frame{background:#0E1630;border-radius:20px;padding:12px;box-shadow:0 24px 60px rgba(16,34,74,.2)}
.browser-bar{display:flex;align-items:center;gap:7px;padding:2px 6px 12px}
.browser-bar span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.18)}
.browser-bar span:first-child{background:#FF6B6B}
.browser-bar span:nth-child(2){background:#FFC15E}
.browser-bar span:nth-child(3){background:#5BD48A}
.browser-bar .url{margin-left:12px;flex:1;height:26px;border-radius:8px;background:rgba(255,255,255,.07);color:#8FA4C8;font-size:12px;display:flex;align-items:center;padding:0 12px;letter-spacing:.02em}
.browser-frame img{border-radius:14px;width:100%;aspect-ratio:16/10;object-fit:cover}
/* ================= 证据区 ================= */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.stat-cell{padding:28px 24px;border-right:1px solid var(--border)}
.stat-cell:last-child{border-right:none}
.stat-cell .val{font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-.02em}
.stat-cell .lab{margin-top:8px;font-size:13.5px;color:var(--muted)}
@media (max-width:767.98px){
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-cell{border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
  .stat-cell:nth-child(2n){border-right:none}
  .stat-cell:nth-child(n+3){border-bottom:none}
}
.quote-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:30px;position:relative}
.quote-card::before{content:"\201C";position:absolute;top:6px;left:22px;font-size:64px;line-height:1;color:rgba(31,79,216,.12);font-family:Georgia,serif}
.quote-card p{margin-top:20px;font-size:16px;line-height:1.85;color:#2A3746}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px dashed var(--border)}
.quote-avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:14px}
.quote-meta strong{display:block;font-size:14.5px}
.quote-meta span{font-size:13px;color:var(--muted)}
.quote-offset{margin-top:34px}
@media (max-width:991.98px){.quote-offset{margin-top:0}}
.logo-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:42px}
.logo-cell{display:flex;align-items:center;justify-content:center;gap:9px;height:64px;border:1px solid var(--border);border-radius:14px;background:#fff;color:#94A0B4;font-size:14.5px;font-weight:600;filter:grayscale(1);transition:.25s var(--ease)}
.logo-cell i{font-size:17px}
.logo-cell:hover{filter:grayscale(0);color:var(--brand);border-color:#C6D4F5;box-shadow:0 8px 22px rgba(16,34,74,.1);transform:translateY(-3px)}
@media (max-width:767.98px){.logo-wall{grid-template-columns:repeat(2,1fr)}}
/* ================= 方案区 ================= */
.plan-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:30px;height:100%;display:flex;flex-direction:column;transition:transform .28s var(--ease),box-shadow .28s var(--ease)}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.plan-card h3{font-size:20px;font-weight:800;margin-bottom:8px}
.plan-card .plan-for{font-size:14px;color:var(--muted);min-height:48px;line-height:1.7}
.plan-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px}
.plan-list li{display:flex;gap:10px;font-size:14.6px;color:#33415A;line-height:1.7}
.plan-list i{color:var(--cyan);margin-top:5px;font-size:13px}
.plan-card .btn{margin-top:auto;width:100%}
.plan-featured{position:relative;border:1.5px solid rgba(31,79,216,.45);box-shadow:0 24px 56px rgba(31,79,216,.16);background:linear-gradient(180deg,#F7FAFF 0%,#fff 46%)}
.plan-flag{position:absolute;top:-14px;left:30px;background:linear-gradient(135deg,var(--brand),var(--violet));color:#fff;font-size:12.5px;font-weight:700;padding:6px 15px;border-radius:999px;box-shadow:0 8px 20px rgba(31,79,216,.3)}
@media (min-width:992px){.plan-featured{transform:translateY(-8px)}.plan-featured:hover{transform:translateY(-12px)}}
@media (max-width:991.98px){.plan-featured-col{order:-1}}
/* ================= 最新信息 ================= */
.news-main{display:flex;flex-direction:column;height:100%}
.news-main .fig{overflow:hidden;position:relative}
.news-main .fig img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .5s var(--ease)}
.news-main:hover .fig img{transform:scale(1.03)}
.news-main h3{font-size:1.25rem;font-weight:800;line-height:1.4;margin:14px 0 10px}
.news-main h3 a{color:var(--text)}
.news-main h3 a:hover{color:var(--brand)}
.news-main p{color:var(--muted);font-size:14.6px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:#7A8699}
.news-card{display:flex;flex-direction:column;height:100%}
.news-card .fig{overflow:hidden}
.news-card .fig img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .fig img{transform:scale(1.04)}
.news-card h4{font-size:16.5px;font-weight:800;line-height:1.45;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card h4 a{color:var(--text)}
.news-card h4 a:hover{color:var(--brand)}
.news-card p{color:var(--muted);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-more{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--brand);margin-top:14px}
.read-more i{transition:transform .25s var(--ease)}
.read-more:hover i{transform:translateX(4px)}
.empty-state{background:#fff;border:1px dashed #C9D6EE;border-radius:var(--r-card);padding:56px 26px;text-align:center}
.empty-state .ico{width:62px;height:62px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:24px}
.empty-state h3{font-size:19px;font-weight:800;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:14.6px;margin-bottom:20px}
/* ================= FAQ ================= */
.faq-acc .accordion-item{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:14px;overflow:hidden;box-shadow:0 6px 20px rgba(16,34,74,.05);transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.faq-acc .accordion-item.is-open{border-color:rgba(56,232,255,.75);box-shadow:0 14px 34px rgba(16,34,74,.1)}
.faq-acc .accordion-button{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:#fff;border:0;
  padding:20px 22px;font-size:16px;font-weight:700;color:var(--text);cursor:pointer;border-radius:0;
  transition:background .22s var(--ease),color .22s var(--ease);box-shadow:none!important;
}
.faq-acc .accordion-button::before{content:"";width:4px;height:22px;border-radius:3px;background:#DCE4F2;flex:0 0 4px;transition:background .22s var(--ease)}
.faq-acc .accordion-button:not(.collapsed){color:#0F2A63;background:#F5F9FF}
.faq-acc .accordion-button:not(.collapsed)::before{background:linear-gradient(180deg,var(--neon),var(--cyan));box-shadow:0 0 12px rgba(56,232,255,.6)}
.faq-acc .accordion-button:hover{background:#F5F9FF}
.faq-acc .accordion-button:focus{box-shadow:none}
.faq-acc .accordion-button::after{display:none}
.faq-icon{margin-left:auto;width:22px;height:22px;position:relative;flex:0 0 22px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transition:transform .25s var(--ease),background .25s var(--ease),opacity .25s var(--ease)}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.accordion-button:not(.collapsed) .faq-icon::before{background:var(--cyan)}
.accordion-button:not(.collapsed) .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-acc .accordion-body{padding:4px 22px 22px 42px;font-size:15px;line-height:1.85;color:#3A4759}
.faq-acc .accordion-body ol{counter-reset:faq;display:flex;flex-direction:column;gap:8px}
.faq-acc .accordion-body ol li{position:relative;padding-left:24px}
.faq-acc .accordion-body ol li::before{counter-increment:faq;content:counter(faq);position:absolute;left:0;top:2px;width:17px;height:17px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-size:11px;font-weight:700;display:grid;place-items:center;line-height:1}
@media (max-width:575.98px){.faq-acc .accordion-button{padding:16px 16px;font-size:15px}.faq-acc .accordion-body{padding:2px 16px 18px 32px}}
/* ================= 底部 CTA ================= */
.cta-band{background:var(--nav-bg);border-radius:24px;padding:52px 46px;position:relative;overflow:hidden;border:1px solid rgba(56,232,255,.28)}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(520px 260px at 82% 18%,rgba(56,232,255,.2),transparent 70%),radial-gradient(420px 220px at 8% 88%,rgba(124,92,255,.22),transparent 72%);pointer-events:none}
.cta-band-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:30px}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;line-height:1.3}
.cta-band p{color:#A9B7D2;font-size:15px;margin-top:12px;max-width:620px;line-height:1.8}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:767.98px){.cta-band{padding:34px 22px}.cta-band .btn{width:100%}}
/* ================= 页脚 ================= */
.site-footer{background:var(--nav-bg);color:#9BA8C2;margin-top:0;position:relative;padding:64px 0 0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,rgba(56,232,255,0),var(--neon),var(--violet),rgba(124,92,255,0))}
.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:11px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:#8C9AB8;max-width:330px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#9BA8C2;font-size:14px;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-links a:hover{color:var(--neon);padding-left:4px}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:#8C9AB8}
.footer-contact span{display:flex;gap:9px;align-items:flex-start;line-height:1.7}
.footer-contact i{color:var(--cyan);margin-top:4px;font-size:13px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7C89A6}
.footer-bottom a{color:#9BA8C2}
.footer-bottom a:hover{color:var(--neon)}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:34px}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;gap:30px}.footer-bottom{flex-direction:column}}
/* ================= 浮动 CTA ================= */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:1050;display:flex;align-items:center;gap:16px;background:rgba(10,16,36,.96);border:1px solid rgba(56,232,255,.5);border-radius:999px;padding:10px 12px 10px 20px;box-shadow:0 16px 40px rgba(10,16,36,.35);opacity:0;visibility:hidden;transform:translateY(18px);transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .txt{color:#D5E0F5;font-size:14px;font-weight:600;white-space:nowrap}
.float-cta .btn{min-height:44px;padding:11px 20px}
.float-close{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#A9B7D2;font-size:12px;cursor:pointer;display:grid;place-items:center;transition:.2s var(--ease)}
.float-close:hover{background:rgba(56,232,255,.18);color:#fff}
@media (max-width:767.98px){
  .float-cta{left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;padding:10px 12px calc(10px + env(safe-area-inset-bottom));gap:10px;justify-content:space-between}
  .float-cta .txt{font-size:13px;white-space:normal;line-height:1.4;max-width:52%}
  .float-cta .btn{white-space:nowrap}
}
/* ================= 杂项 ================= */
.divider-neon{height:1px;background:linear-gradient(90deg,rgba(56,232,255,0),rgba(56,232,255,.5),rgba(124,92,255,0));border:0;margin:0}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-weight:600;font-size:14.5px}
.link-arrow i{transition:transform .25s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --navy:#0A1024;
  --navy-2:#0E1630;
  --blue:#1F4FD8;
  --blue-dark:#1740B8;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --violet:#7C5CFF;
  --amber:#F5A524;
  --bg:#F6F8FC;
  --paper:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6475;
  --line:#E3E9F5;
  --ok:#1FA971;
  --warn:#E6A23C;
  --err:#E45757;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(16,34,74,.08);
  --shadow-hover:0 16px 44px rgba(16,34,74,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--cyan)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;color:var(--text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(56,232,255,.35)}

.container{max-width:1320px;width:100%;margin:0 auto;padding-left:20px;padding-right:20px}
@media (max-width:1399.98px){.container{max-width:1140px}}
@media (max-width:1199.98px){.container{max-width:960px}}
@media (max-width:991.98px){.container{max-width:720px}}
@media (max-width:767.98px){.container{max-width:100%;padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
#readProgress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  z-index:1060;border-radius:0 3px 3px 0;
  transition:width .12s linear;
}
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#0A1024;
  border-bottom:1px solid rgba(56,232,255,.18);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(56,232,255,0),#38E8FF 25%,#7C5CFF 75%,rgba(124,92,255,0));
}
.header-inner{display:flex;align-items:center;gap:26px;height:68px}
.brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:18px;letter-spacing:.3px;white-space:nowrap}
.brand:hover{color:#fff}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  background:linear-gradient(135deg,#38E8FF,#7C5CFF);
  display:flex;align-items:center;justify-content:center;
  color:#06101f;font-size:16px;font-weight:800;
  box-shadow:0 0 18px rgba(56,232,255,.4);
}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-block;padding:9px 13px;border-radius:10px;
  color:#A9B5CE;font-size:15px;font-weight:500;
  transition:color .2s ease,background .2s ease;
}
.main-nav a:hover{color:#B8F4FF;background:rgba(56,232,255,.08)}
.main-nav a.active{color:var(--neon);font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px var(--neon);
}
.header-actions{display:flex;align-items:center;gap:10px}
.btn-nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  background:linear-gradient(135deg,#38E8FF,#7C5CFF);
  color:#06101f;font-size:14.5px;font-weight:700;border:1px solid transparent;
  transition:box-shadow .25s ease,transform .2s ease,filter .2s ease;
}
.btn-nav-cta:hover{color:#06101f;box-shadow:0 0 22px rgba(56,232,255,.6);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(56,232,255,.08);border:1px solid rgba(56,232,255,.28);
  color:#B8F4FF;font-size:17px;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s ease;
}
.nav-toggle:hover{background:rgba(56,232,255,.16)}
@media (max-width:1199.98px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:60px;gap:14px}
  .brand-text{font-size:16px}
}
@media (max-width:575.98px){
  .btn-nav-cta{padding:9px 14px;font-size:13.5px}
  .brand-text{font-size:15px}
}
.nav-drawer{background:#0A1024;color:#fff;width:308px}
.nav-drawer .offcanvas-header{border-bottom:1px solid rgba(56,232,255,.18)}
.nav-drawer .offcanvas-title{color:#fff;font-weight:700;font-size:16px}
.nav-drawer .offcanvas-body{display:flex;flex-direction:column;padding:18px}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:auto}
.drawer-nav a{
  display:block;padding:12px 6px;color:#C6D0E4;font-size:15.5px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--neon)}

/* ============ 面包屑 ============ */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13.5px;color:var(--muted);margin-bottom:20px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:#C4CDDE;font-size:12px}
.crumbs .current{color:var(--text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  padding:34px 0 40px;
  background:linear-gradient(180deg,#EDF3FF 0%,#F6F8FC 100%);
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;right:-140px;top:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.20),rgba(56,232,255,0) 66%);
  pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;left:-120px;bottom:-220px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,79,216,.14),rgba(31,79,216,0) 68%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.post-head{max-width:900px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:#1F4FD8;letter-spacing:.06em;
  padding:6px 14px;border-radius:999px;background:#E4ECFF;border:1px solid #CFDDFF;
  margin-bottom:16px;
}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:#E4ECFF;color:#1F4FD8;border:1px solid #CFDDFF;
}
.badge-amber{background:#FEF3E2;color:#B87506;border-color:#F8DFB4}
.post-head h1{
  font-size:clamp(2rem,4vw,3.1rem);
  line-height:1.25;font-weight:800;margin:16px 0 18px;letter-spacing:-.02em;
}
.post-lead{
  font-size:clamp(1rem,1.5vw,1.1rem);color:#44506B;max-width:760px;line-height:1.8;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:24px;font-size:13.5px;color:var(--muted);
}
.post-meta span{display:inline-flex;align-items:center;gap:7px}
.post-meta i{color:var(--cyan)}

/* ============ 布局 ============ */
.post-section{padding:56px 0 24px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:46px;align-items:start}
@media (max-width:1199.98px){.article-layout{grid-template-columns:1fr;gap:34px}}
.post-main{min-width:0}
.post-content{
  max-width:820px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:clamp(22px,3.4vw,44px);
  font-size:17.5px;line-height:1.85;color:var(--text);
}
@media (max-width:767.98px){.post-content{padding:22px 18px;font-size:17px}}

/* ============ 正文排版 ============ */
.post-content > *:first-child{margin-top:0}
.post-content p{margin:0 0 1.15em}
.post-content h2{
  position:relative;font-size:clamp(1.4rem,2.2vw,1.72rem);font-weight:800;
  line-height:1.34;margin:1.9em 0 .75em;padding-left:15px;
}
.post-content h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--neon),var(--blue));
}
.post-content h3{
  font-size:clamp(1.16rem,1.7vw,1.33rem);font-weight:700;color:#16305E;
  margin:1.6em 0 .6em;
}
.post-content h4{font-size:1.05rem;font-weight:700;margin:1.4em 0 .5em;color:#16305E}
.post-content ul,.post-content ol{margin:0 0 1.25em;padding-left:1.4em}
.post-content ul li{list-style:none;position:relative;margin-bottom:.55em;padding-left:4px}
.post-content ul li::before{
  content:"";position:absolute;left:-15px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(18,184,200,.55);
}
.post-content ol{list-style:decimal}
.post-content ol li{margin-bottom:.55em}
.post-content ol li::marker{color:var(--blue);font-weight:700}
.post-content a{color:var(--blue);border-bottom:1px solid rgba(31,79,216,.35)}
.post-content a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.post-content strong{font-weight:700;color:#14213A}
.post-content blockquote{
  margin:1.7em 0;padding:18px 22px;
  background:#EEF4FF;border-left:4px solid var(--neon);
  border-radius:0 14px 14px 0;color:#2B3A55;font-size:16.5px;
}
.post-content blockquote p:last-child{margin-bottom:0}
.post-content img{border-radius:16px;margin:1.6em auto;box-shadow:0 8px 24px rgba(16,34,74,.10)}
.post-content figure{margin:1.7em 0}
.post-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.post-content table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
  font-variant-numeric:tabular-nums;border-radius:12px;overflow:hidden;
}
.post-content thead th{background:#F1F5FE;font-weight:700;color:#1B2C4D}
.post-content th,.post-content td{border:1px solid var(--line);padding:11px 15px;text-align:left}
.post-content tbody tr:nth-child(even){background:#FAFBFF}
.post-content pre{
  background:#F1F4FA;color:#1B2430;padding:16px 18px;border-radius:14px;
  overflow-x:auto;font-size:14px;border:1px solid var(--line);line-height:1.7;
}
.post-content code{
  background:#F1F4FA;padding:2px 6px;border-radius:6px;font-size:.9em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.post-content pre code{background:none;padding:0;border-radius:0}
.post-content hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}
@media (max-width:767.98px){
  .post-content table{display:block;overflow-x:auto;white-space:nowrap}
}

/* ============ 空状态 ============ */
.empty-article{text-align:center;padding:34px 10px;max-width:560px;margin:0 auto}
.empty-icon{
  width:76px;height:76px;border-radius:22px;margin:0 auto 20px;
  display:flex;align-items:center;justify-content:center;font-size:30px;color:var(--blue);
  background:#EDF3FF;border:1px solid #D6E2FF;
}
.empty-article h2{font-size:1.5rem;margin-bottom:12px;padding-left:0}
.empty-article h2::before{display:none}
.empty-article p{color:var(--muted);margin-bottom:22px;font-size:16px;line-height:1.8}

/* ============ 侧栏 ============ */
.post-aside{position:sticky;top:92px;display:flex;flex-direction:column;gap:18px}
@media (max-width:1199.98px){.post-aside{position:static}}
.aside-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 22px 20px;
}
.aside-title{
  font-size:15px;font-weight:800;letter-spacing:.02em;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;color:#14213A;
}
.aside-title::before{
  content:"";width:4px;height:15px;border-radius:3px;
  background:linear-gradient(180deg,var(--neon),var(--blue));
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto}
.toc-list a{
  display:block;font-size:14px;color:var(--muted);padding:7px 10px;border-radius:9px;
  border-left:2px solid transparent;line-height:1.5;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.toc-list a:hover{color:var(--blue);background:#F2F6FF}
.toc-list a.active{color:var(--blue);background:#EDF3FF;border-left-color:var(--neon);font-weight:600}
.aside-list{display:flex;flex-direction:column;gap:11px}
.aside-list li{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--muted)}
.aside-list b{color:var(--text);font-weight:700;font-variant-numeric:tabular-nums}
.aside-list b.ok{color:var(--ok)}
.aside-list b.ok::before{
  content:"";display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--ok);margin-right:7px;vertical-align:1px;
  box-shadow:0 0 8px rgba(31,169,113,.6);
}
.aside-tip{background:#0A1024;border-color:rgba(56,232,255,.32)}
.aside-tip .aside-title{color:#fff}
.aside-tip .aside-title::before{background:linear-gradient(180deg,var(--neon),var(--violet))}
.aside-tip p{color:#AEB9D0;font-size:14px;line-height:1.8;margin-bottom:14px}
.aside-tip a{color:var(--neon);font-size:14px;font-weight:600}
.aside-tip a:hover{color:#fff}

/* ============ 标签与分享 ============ */
.post-foot{
  max-width:820px;margin-top:22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.post-tags{display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.tag-title{font-size:13px;color:var(--muted);font-weight:600;margin-right:2px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:999px;font-size:13.5px;
  background:#EDF3FF;color:#1F4FD8;border:1px solid #D6E2FF;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{background:#1F4FD8;color:#fff;border-color:#1F4FD8;transform:translateY(-1px)}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;cursor:pointer;
  background:#fff;border:1px solid #C9D5EC;color:#1F4FD8;
  transition:all .22s ease;
}
.share-btn:hover{border-color:var(--neon);color:#0E7E92;box-shadow:0 0 0 3px rgba(56,232,255,.16)}
.share-btn:active{transform:scale(.98)}

/* ============ 相关推荐 ============ */
.related-section{padding:64px 0 12px}
.section-head{max-width:660px;margin-bottom:30px}
.section-head h2{font-size:clamp(1.5rem,2.4vw,1.95rem);margin-bottom:10px}
.section-head p{color:var(--muted);font-size:15.5px}
.rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media (max-width:1199.98px){.rel-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575.98px){.rel-grid{grid-template-columns:1fr}}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);color:inherit;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C9DBFF;color:inherit}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:#EAF0FB}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.rel-body h3{font-size:16.5px;line-height:1.5;margin-bottom:10px}
.rel-body p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:14px;flex:1}
.rel-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:#8492A8}
.rel-more{color:#1F4FD8;font-weight:600;font-size:13.5px}
.rel-card:hover .rel-more{color:var(--cyan)}

/* ============ 返回入口 ============ */
.back-links{
  max-width:820px;margin:30px 0 0;
  display:flex;flex-wrap:wrap;gap:12px;
}
.back-links a{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;font-size:14.5px;font-weight:600;
  background:#fff;border:1px solid #C9D5EC;color:#1F4FD8;
  transition:all .22s ease;
}
.back-links a:hover{border-color:var(--blue);background:#1F4FD8;color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.26)}

/* ============ 底部 CTA ============ */
.bottom-cta{
  position:relative;overflow:hidden;margin-top:70px;
  background:#0A1024;color:#fff;padding:64px 0 68px;
  border-top:1px solid rgba(56,232,255,.3);
}
.bottom-cta::before{
  content:"";position:absolute;right:-160px;top:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.24),rgba(56,232,255,0) 68%);pointer-events:none;
}
.bottom-cta::after{
  content:"";position:absolute;left:-140px;bottom:-220px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(124,92,255,.24),rgba(124,92,255,0) 70%);pointer-events:none;
}
.bottom-cta .container{position:relative;z-index:2}
.cta-wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:34px;align-items:center}
@media (max-width:991.98px){.cta-wrap{grid-template-columns:1fr;gap:26px}}
.bottom-cta h2{color:#fff;font-size:clamp(1.45rem,2.4vw,2rem);margin-bottom:14px}
.bottom-cta p{color:#AEB9D0;font-size:15.5px;max-width:640px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-neon{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:700;
  background:linear-gradient(135deg,#38E8FF,#7C5CFF);color:#06101f;border:none;
  transition:box-shadow .25s ease,transform .2s ease;
}
.btn-neon:hover{color:#06101f;box-shadow:0 0 26px rgba(56,232,255,.65);transform:translateY(-2px)}
.btn-outline-light2{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  background:transparent;border:1px solid rgba(56,232,255,.55);color:#B8F4FF;
  transition:all .25s ease;
}
.btn-outline-light2:hover{background:rgba(56,232,255,.12);color:#fff;border-color:var(--neon)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:none;align-items:center;gap:14px;
  padding:10px 12px 10px 20px;border-radius:999px;
  background:rgba(10,16,36,.97);
  border:1px solid rgba(56,232,255,.5);
  box-shadow:0 14px 36px rgba(6,14,34,.42);
  color:#E6EDF9;font-size:14.5px;
}
.float-cta.show{display:flex;animation:floatIn .28s ease}
@keyframes floatIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.float-cta .btn-cta-sm{
  display:inline-flex;align-items:center;min-height:44px;
  padding:9px 20px;border-radius:999px;font-size:14px;font-weight:700;
  background:linear-gradient(135deg,#38E8FF,#7C5CFF);color:#06101f;
}
.float-cta .btn-cta-sm:hover{color:#06101f}
.float-close{
  width:34px;height:34px;border-radius:50%;flex:0 0 34px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#AEB9D0;font-size:16px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease,color .2s ease;
}
.float-close:hover{background:rgba(56,232,255,.18);color:#fff}
@media (max-width:575.98px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:16px 16px 0 0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    justify-content:space-between;font-size:13.5px;gap:10px;
  }
}

/* ============ 页脚 ============ */
.site-footer{
  background:#0A1024;color:#98A5BC;
  border-top:1px solid rgba(56,232,255,.28);
  padding:60px 0 26px;font-size:14.5px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
@media (max-width:991.98px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{
  display:flex;align-items:center;gap:10px;color:#fff;
  font-weight:800;font-size:17px;margin-bottom:16px;
}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px}
.footer-about{color:#8C99B2;font-size:14px;line-height:1.85;max-width:400px}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#98A5BC;font-size:14px}
.footer-links a:hover{color:var(--neon)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:#8C99B2}
.footer-contact span{display:flex;gap:9px;line-height:1.7}
.footer-contact i{color:var(--neon);margin-top:4px}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7C879E;
}

/* ============ 通用按钮覆盖 ============ */
.btn-primary-brand{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 26px;border-radius:999px;font-size:15px;font-weight:700;
  background:#1F4FD8;color:#fff;border:1px solid #1F4FD8;
  transition:all .22s ease;
}
.btn-primary-brand:hover{background:#1740B8;border-color:#1740B8;color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.28)}
.btn-primary-brand:active{transform:scale(.98)}
:focus-visible{outline:3px solid rgba(56,232,255,.45);outline-offset:2px}

/* roulang page: category1 */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1740B8;
  --brand-soft:#EAF0FF;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --violet:#7C5CFF;
  --amber:#F5A524;
  --nav-bg:#0A1024;
  --nav-bg-2:#0E1630;
  --page-bg:#F6F8FC;
  --paper:#FFFFFF;
  --ink:#1B2430;
  --ink-2:#5A6475;
  --line:#E3E9F5;
  --line-2:#D9E2F2;
  --ok:#1FA971;
  --warn:#E6A23C;
  --err:#E45757;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --sh-card:0 10px 30px rgba(16,34,74,.08);
  --sh-hover:0 16px 44px rgba(16,34,74,.14);
  --sh-nav:0 8px 28px rgba(4,10,28,.45);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.25;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(56,232,255,.45);outline-offset:2px;border-radius:8px}

.container{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding:0 20px;
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:linear-gradient(90deg,var(--nav-bg) 0%,var(--nav-bg-2) 100%);
  box-shadow:var(--sh-nav);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,var(--neon) 0%,var(--violet) 100%);
  opacity:.85;
}
.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  gap:22px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--neon) 0%,var(--violet) 100%);
  color:#05122A;
  font-weight:800;
  font-size:17px;
  box-shadow:0 0 18px rgba(56,232,255,.4);
}
.brand-text{
  color:#FFFFFF;
  font-weight:800;
  font-size:17px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-text:hover{color:#B8F4FF}

.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  font-size:14.5px;
  font-weight:500;
  color:#A9B6D6;
  border-radius:10px;
  white-space:nowrap;
}
.main-nav a:hover{
  color:#B8F4FF;
  background:rgba(56,232,255,.08);
}
.main-nav a.active{
  color:#FFFFFF;
  background:rgba(56,232,255,.1);
}
.main-nav a.active::after{
  content:"";
  position:absolute;
  left:13px;right:13px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--neon);
  box-shadow:0 0 12px rgba(56,232,255,.9);
}
.nav-cta{
  margin-left:14px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  font-size:14.5px;
  font-weight:700;
  color:#04121F;
  border-radius:999px;
  background:linear-gradient(135deg,var(--neon) 0%,#6FE3FF 100%);
  border:1px solid rgba(56,232,255,.7);
  box-shadow:0 0 0 rgba(56,232,255,0);
  transition:box-shadow .2s ease,transform .2s ease,color .2s ease;
}
.nav-cta:hover{
  color:#04121F;
  box-shadow:0 0 22px rgba(56,232,255,.55);
  transform:translateY(-1px);
}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid rgba(56,232,255,.35);
  border-radius:12px;
  background:rgba(56,232,255,.06);
  color:var(--neon);
  font-size:18px;
}

/* offcanvas */
.offcanvas-dark{
  background:linear-gradient(180deg,var(--nav-bg) 0%,var(--nav-bg-2) 100%);
  color:#D6DEF0;
  width:300px;
}
.offcanvas-dark .offcanvas-header{border-bottom:1px solid rgba(56,232,255,.18)}
.offcanvas-dark .btn-close{filter:invert(1) grayscale(1) brightness(1.6)}
.offcanvas-body{padding:18px 18px 24px}
.offcanvas-body .m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:13px 12px;
  margin-bottom:8px;
  color:#C3CEE6;
  font-size:15px;
  border-radius:12px;
  border:1px solid transparent;
}
.offcanvas-body .m-link:hover{background:rgba(56,232,255,.08);color:#B8F4FF}
.offcanvas-body .m-link.active{
  color:#FFFFFF;
  background:rgba(56,232,255,.1);
  border-color:rgba(56,232,255,.35);
  box-shadow:inset 3px 0 0 var(--neon);
}
.oc-cta{
  margin-top:18px;
  display:flex;
  justify-content:center;
  align-items:center;
  gap:8px;
  padding:13px 18px;
  border-radius:999px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(135deg,var(--neon) 0%,#6FE3FF 100%);
}

/* ============ BREADCRUMB ============ */
.crumb-bar{
  background:#EFF4FD;
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:13px 0;
  font-size:13.5px;
  color:var(--ink-2);
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#B7C3DA}
.crumb .current{color:var(--ink);font-weight:600}

/* ============ HERO ============ */
.cat-hero{
  position:relative;
  background:linear-gradient(180deg,#F2F6FF 0%,#F6F8FC 100%);
  padding:64px 0 72px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;
  top:-160px;right:-120px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.16) 0%,rgba(124,92,255,.06) 45%,rgba(255,255,255,0) 70%);
  pointer-events:none;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.hero-eyebrow i{font-size:12px}
.cat-hero h1{
  font-size:clamp(2.1rem,3.4vw,3.15rem);
  line-height:1.2;
  margin-bottom:20px;
}
.cat-hero h1 .hl{
  color:var(--brand);
  position:relative;
  white-space:nowrap;
}
.cat-hero h1 .hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:8px;
  border-radius:4px;
  background:linear-gradient(90deg,rgba(56,232,255,.55),rgba(124,92,255,.25));
  z-index:-1;
}
.hero-lead{
  font-size:17px;
  color:var(--ink-2);
  line-height:1.85;
  max-width:620px;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 26px;
  font-size:15px;
  font-weight:700;
  color:#fff;
  background:var(--brand);
  border:1px solid var(--brand);
  border-radius:var(--r-btn);
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.btn-main:hover{
  color:#fff;
  background:var(--brand-dark);
  border-color:var(--brand-dark);
  box-shadow:0 8px 20px rgba(31,79,216,.28);
  transform:translateY(-2px);
}
.btn-main:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 24px;
  font-size:15px;
  font-weight:700;
  color:var(--brand);
  background:#fff;
  border:1px solid #C7D6F5;
  border-radius:var(--r-btn);
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn-ghost:hover{
  color:#fff;
  background:var(--brand);
  border-color:var(--brand);
  box-shadow:0 8px 20px rgba(31,79,216,.22);
  transform:translateY(-2px);
}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.trust-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  font-size:13px;
  font-weight:600;
  color:#2A3A55;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:0 4px 14px rgba(16,34,74,.05);
}
.trust-chip i{color:var(--cyan)}
.hero-figure{
  position:relative;
  border-radius:22px;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(16,34,74,.16);
  border:1px solid #DCE6F8;
  background:#0E1630;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.hero-figure figcaption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:18px 20px;
  background:linear-gradient(180deg,rgba(10,16,36,0) 0%,rgba(10,16,36,.86) 100%);
  color:#E6EEFF;
  font-size:13.5px;
  line-height:1.6;
}
.hero-figure figcaption strong{color:var(--neon);display:block;font-size:14.5px;margin-bottom:4px}
.hero-float-tag{
  position:absolute;
  top:18px;left:18px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 13px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  color:#04121F;
  background:rgba(56,232,255,.92);
  box-shadow:0 0 20px rgba(56,232,255,.5);
}

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky;
  top:68px;
  z-index:1020;
  background:rgba(10,16,36,.97);
  border-bottom:1px solid rgba(56,232,255,.22);
  backdrop-filter:saturate(140%);
}
.anchor-scroll{
  display:flex;
  gap:8px;
  overflow-x:auto;
  padding:10px 0;
  scrollbar-width:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{
  flex:0 0 auto;
  padding:8px 16px;
  font-size:14px;
  color:#A9B6D6;
  border-radius:999px;
  border:1px solid transparent;
  white-space:nowrap;
}
.anchor-scroll a:hover{color:#B8F4FF;background:rgba(56,232,255,.08)}
.anchor-scroll a.active{
  color:#04121F;
  background:linear-gradient(135deg,var(--neon) 0%,#77E6FF 100%);
  border-color:rgba(56,232,255,.8);
  box-shadow:0 0 16px rgba(56,232,255,.45);
  font-weight:700;
}

/* ============ 通用板块 ============ */
.section{padding:76px 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:clamp(1.6rem,2.3vw,2.15rem);margin-bottom:14px}
.section-head p{color:var(--ink-2);font-size:16px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--cyan);
  margin-bottom:12px;
}
.panel{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.panel:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#D5E2FA}

/* 知识卡 */
.know-card{padding:26px;height:100%}
.know-card .k-top{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
}
.k-num{
  width:42px;height:42px;
  flex:0 0 42px;
  display:grid;place-items:center;
  border-radius:13px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:800;
  font-size:16px;
  font-variant-numeric:tabular-nums;
}
.know-card h3{font-size:19px;margin-bottom:10px}
.know-card p{color:var(--ink-2);font-size:15px;line-height:1.8}
.k-list{margin-top:14px;display:grid;gap:9px}
.k-list li{
  display:flex;
  gap:9px;
  font-size:14.5px;
  color:#2A3A55;
  line-height:1.7;
}
.k-list li i{color:var(--cyan);margin-top:5px;font-size:12px;flex:0 0 auto}
.know-thumb{
  margin-top:18px;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
}
.know-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.panel:hover .know-thumb img{transform:scale(1.03)}

.side-note{
  padding:26px;
  height:100%;
  background:linear-gradient(160deg,#0E1630 0%,#131E44 100%);
  border:1px solid rgba(56,232,255,.24);
  border-radius:var(--r-card);
  color:#D6DEF0;
  box-shadow:0 16px 40px rgba(10,16,36,.3);
}
.side-note h3{color:#fff;font-size:18px;margin-bottom:12px}
.side-note p{font-size:14.5px;line-height:1.85;color:#A9B6D6}
.note-list{margin-top:18px;display:grid;gap:12px}
.note-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:#CBD6EC;
  line-height:1.7;
  padding-bottom:12px;
  border-bottom:1px dashed rgba(56,232,255,.18);
}
.note-list li:last-child{border-bottom:0;padding-bottom:0}
.note-list li i{color:var(--neon);margin-top:4px;font-size:13px;flex:0 0 auto}
.note-badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  margin-top:20px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(245,165,36,.14);
  border:1px solid rgba(245,165,36,.4);
  color:#FFD79A;
  font-size:13px;
  font-weight:600;
}

/* 步骤 */
.steps-wrap{counter-reset:step}
.step-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:20px;
  padding:26px 26px 26px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#CFDEF8}
.step-item::before{
  content:"";
  position:absolute;
  left:0;top:22px;bottom:22px;
  width:4px;
  border-radius:0 4px 4px 0;
  background:linear-gradient(180deg,var(--neon),var(--violet));
  opacity:0;
  transition:opacity .2s ease;
}
.step-item:hover::before{opacity:1}
.step-dot{
  width:52px;height:52px;
  border-radius:16px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#EAF0FF 0%,#DCE8FF 100%);
  color:var(--brand);
  font-weight:800;
  font-size:18px;
  font-variant-numeric:tabular-nums;
  border:1px solid #D3E1FA;
}
.step-now .step-dot{
  background:linear-gradient(135deg,var(--neon) 0%,#6FE3FF 100%);
  color:#04121F;
  border-color:rgba(56,232,255,.8);
  box-shadow:0 0 20px rgba(56,232,255,.45);
}
.step-item h3{font-size:18px;margin-bottom:8px}
.step-item p{color:var(--ink-2);font-size:14.8px;line-height:1.8}
.step-meta{
  margin-top:12px;
  display:flex;flex-wrap:wrap;gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  font-size:12.5px;
  font-weight:600;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
}
.tag-amber{background:rgba(245,165,36,.15);color:#A96B00}
.tag-ok{background:rgba(31,169,113,.13);color:#0F7A50}
.tag-line{background:#fff;border:1px solid var(--line);color:var(--ink-2)}

/* 设备/表格 */
.table-shell{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
}
.table-scroll{overflow-x:auto}
table.device-table{
  width:100%;
  border-collapse:collapse;
  min-width:720px;
  font-variant-numeric:tabular-nums;
}
table.device-table thead th{
  background:#EFF4FD;
  color:#22304A;
  font-size:14px;
  font-weight:700;
  text-align:left;
  padding:15px 20px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
table.device-table tbody td{
  padding:15px 20px;
  font-size:14.5px;
  color:#2A3A55;
  border-bottom:1px solid #EEF3FB;
  line-height:1.7;
}
table.device-table tbody tr:nth-child(even){background:#FAFCFF}
table.device-table tbody tr:hover{background:#F2F7FF}
table.device-table tbody tr:last-child td{border-bottom:0}
.dot-ok{color:var(--ok);font-weight:700}
.dot-warn{color:var(--warn);font-weight:700}
.dot-err{color:var(--err);font-weight:700}

/* 安全提示 */
.secure-grid{display:grid;gap:18px}
.secure-item{
  display:flex;
  gap:16px;
  padding:22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.secure-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.secure-ico{
  width:46px;height:46px;flex:0 0 46px;
  border-radius:14px;
  display:grid;place-items:center;
  background:rgba(18,184,200,.12);
  color:var(--cyan);
  font-size:18px;
}
.secure-item h3{font-size:17px;margin-bottom:7px}
.secure-item p{font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* 证据条 */
.stat-band{
  background:linear-gradient(120deg,#0A1024 0%,#101B3D 55%,#132052 100%);
  border:1px solid rgba(56,232,255,.2);
  border-radius:22px;
  padding:34px 26px;
  box-shadow:0 20px 50px rgba(10,16,36,.28);
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.stat-cell{
  text-align:center;
  padding:8px 10px;
  border-right:1px dashed rgba(56,232,255,.2);
}
.stat-cell:last-child{border-right:0}
.stat-num{
  font-size:clamp(1.7rem,2.6vw,2.3rem);
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  margin-bottom:8px;
}
.stat-num span{color:var(--neon);font-size:.62em;margin-left:3px}
.stat-label{font-size:13.5px;color:#93A3C6}

/* FAQ */
.faq-acc .accordion-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:0 6px 18px rgba(16,34,74,.05);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-acc .accordion-item:hover{border-color:#CFDEF8;box-shadow:0 10px 26px rgba(16,34,74,.09)}
.faq-acc .accordion-button{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 20px 18px 22px;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
  background:#fff;
  border:0;
  box-shadow:none !important;
  position:relative;
}
.faq-acc .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:16px;bottom:16px;
  width:4px;
  border-radius:0 4px 4px 0;
  background:var(--neon);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:#F7FAFF}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"+";
  width:26px;height:26px;
  display:grid;place-items:center;
  border-radius:8px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:800;
  font-size:16px;
  line-height:1;
  transition:transform .2s ease,background-color .2s ease;
  flex:0 0 26px;
  margin-left:auto;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  content:"−";
  background:var(--brand);
  color:#fff;
}
.faq-acc .accordion-body{
  padding:2px 22px 20px 22px;
  font-size:15px;
  color:var(--ink-2);
  line-height:1.85;
}
.faq-acc .accordion-body p+p{margin-top:10px}
.faq-acc .accordion-body strong{color:#22304A}

/* CTA */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  padding:52px 40px;
  background:linear-gradient(120deg,#0A1024 0%,#111D46 60%,#15255C 100%);
  border:1px solid rgba(56,232,255,.24);
  box-shadow:0 24px 60px rgba(10,16,36,.32);
}
.cta-block::after{
  content:"";
  position:absolute;
  right:-140px;top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.22) 0%,rgba(124,92,255,.08) 45%,rgba(255,255,255,0) 72%);
}
.cta-block h2{color:#fff;font-size:clamp(1.5rem,2.2vw,2rem);margin-bottom:14px}
.cta-block p{color:#A9B6D6;font-size:15.5px;line-height:1.85;max-width:640px;margin-bottom:26px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
.btn-neon{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 26px;
  font-size:15px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(135deg,var(--neon) 0%,#6FE3FF 100%);
  border:1px solid rgba(56,232,255,.8);
  border-radius:var(--r-btn);
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn-neon:hover{color:#04121F;box-shadow:0 0 26px rgba(56,232,255,.55);transform:translateY(-2px)}
.btn-outline-neon{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:13px 24px;
  font-size:15px;
  font-weight:700;
  color:#CDE9FF;
  background:rgba(56,232,255,.06);
  border:1px solid rgba(56,232,255,.45);
  border-radius:var(--r-btn);
  transition:transform .18s ease,background-color .18s ease,color .18s ease;
}
.btn-outline-neon:hover{color:#04121F;background:var(--neon);transform:translateY(-2px)}

/* FOOTER */
.site-footer{
  background:var(--nav-bg);
  color:#93A3C6;
  padding:56px 0 26px;
  margin-top:0;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,var(--neon) 0%,var(--violet) 100%);
  opacity:.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:34px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:800;
  font-size:17px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  font-size:16px;
}
.footer-about{font-size:14px;line-height:1.85;color:#8C9CBE;max-width:340px}
.footer-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:16px;
  font-weight:700;
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  color:#93A3C6;
  font-size:14px;
}
.footer-links a:hover{color:var(--neon)}
.footer-contact{display:grid;gap:12px;font-size:14px;color:#8C9CBE;line-height:1.7}
.footer-contact i{color:var(--neon);margin-right:8px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:20px;
  font-size:13px;
  color:#7787A9;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:1040;
  display:flex;
  align-items:center;
  gap:14px;
  padding:11px 12px 11px 20px;
  border-radius:999px;
  background:rgba(10,16,36,.97);
  border:1px solid rgba(56,232,255,.45);
  box-shadow:0 14px 36px rgba(10,16,36,.42);
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .fc-text{color:#C7D4EC;font-size:13.5px;white-space:nowrap}
.float-cta .fc-text strong{color:#fff}
.float-cta .fc-btn{
  padding:10px 18px;
  border-radius:999px;
  font-size:13.5px;
  font-weight:700;
  color:#04121F;
  background:linear-gradient(135deg,var(--neon) 0%,#6FE3FF 100%);
}
.float-cta .fc-btn:hover{color:#04121F;box-shadow:0 0 18px rgba(56,232,255,.55)}
.float-cta .fc-close{
  width:32px;height:32px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  background:transparent;
  color:#8C9CBE;
  font-size:13px;
}
.float-cta .fc-close:hover{color:#fff;border-color:rgba(56,232,255,.5)}

/* 响应式 */
@media (max-width:1199.98px){
  .container{max-width:1140px}
}
@media (max-width:991.98px){
  .container{max-width:720px}
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:grid}
  .header-inner{height:60px}
  .anchor-bar{top:60px}
  .section{padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat-cell{border-right:0;border-bottom:1px dashed rgba(56,232,255,.18);padding-bottom:16px}
  .stat-cell:nth-child(3),.stat-cell:nth-child(4){border-bottom:0;padding-bottom:0}
}
@media (max-width:767.98px){
  .container{max-width:100%;padding:0 16px}
  .cat-hero{padding:44px 0 52px}
  .cat-hero h1{font-size:1.95rem}
  .hero-lead{font-size:16px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .step-item{grid-template-columns:1fr;gap:14px;padding:22px 20px}
  .step-dot{width:46px;height:46px;font-size:16px;border-radius:14px}
  .know-card,.side-note,.secure-item{padding:20px}
  .cta-block{padding:36px 22px;border-radius:18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:6px}
  .float-cta{
    right:0;left:0;bottom:0;
    border-radius:0;
    padding:12px 14px calc(12px + env(safe-area-inset-bottom));
    justify-content:space-between;
    transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0)}
  .float-cta .fc-text{font-size:12.5px;white-space:normal;line-height:1.5}
  .float-cta .fc-close{display:none}
  .faq-acc .accordion-button{font-size:15px;padding:16px 16px 16px 18px}
}
@media (max-width:479.98px){
  .brand-text{font-size:15px}
  .brand-mark{width:32px;height:32px;font-size:15px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center}
  .cta-actions .btn-neon,.cta-actions .btn-outline-neon{width:100%;justify-content:center}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{border-bottom:1px dashed rgba(56,232,255,.18) !important;padding-bottom:16px}
  .stat-cell:last-child{border-bottom:0 !important;padding-bottom:0}
}

/* roulang page: category2 */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1740B8;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --violet:#7C5CFF;
  --amber:#F5A524;
  --ink:#0A1024;
  --ink-2:#0E1630;
  --bg:#F6F8FC;
  --paper:#FFFFFF;
  --text:#1B2430;
  --text-strong:#101B33;
  --muted:#5A6475;
  --line:#E3E9F5;
  --line-soft:#EEF2FA;
  --ok:#1FA971;
  --warn:#E6A23C;
  --err:#E45757;
  --r-card:18px;
  --r-btn:12px;
  --r-img:16px;
  --sh-card:0 10px 30px rgba(16,34,74,.08);
  --sh-hover:0 16px 44px rgba(16,34,74,.14);
  --sh-nav:0 6px 26px rgba(6,14,34,.28);
  --tr:.25s ease;
  --sec-y:88px;
  --nav-h:68px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4,h5{color:var(--text-strong);font-weight:800;line-height:1.28;margin:0 0 .6em}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.15em}
li{margin-bottom:.45em}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(56,232,255,.45);outline-offset:2px}
::selection{background:rgba(31,79,216,.16)}

.container{width:100%;padding-left:20px;padding-right:20px;margin:0 auto}
@media (min-width:768px){.container{max-width:720px;padding-left:16px;padding-right:16px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1140px}}
@media (min-width:1400px){.container{max-width:1320px}}

.section{padding:var(--sec-y) 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(1.6rem,2.4vw,2.15rem);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.16em;
  color:var(--brand);background:rgba(31,79,216,.08);
  border:1px solid rgba(31,79,216,.16);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow i{color:var(--cyan)}

/* ============ 按钮 ============ */
.btn{
  border-radius:var(--r-btn);
  font-weight:600;
  padding:12px 24px;
  border:1px solid transparent;
  transition:transform var(--tr),box-shadow var(--tr),background-color var(--tr),color var(--tr),border-color var(--tr);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--brand);border-color:var(--brand);color:#fff;
}
.btn-primary:hover{
  background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;
  transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.28);
}
.btn-outline-brand{
  background:#fff;border-color:#C7D6F5;color:var(--brand);
}
.btn-outline-brand:hover{
  background:var(--brand);border-color:var(--brand);color:#fff;
  transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.22);
}
.btn-neon{
  background:rgba(56,232,255,.10);
  border:1px solid rgba(56,232,255,.55);
  color:#B8F4FF;border-radius:999px;
  font-size:14px;padding:9px 18px;font-weight:600;
}
.btn-neon:hover{
  background:var(--neon);border-color:var(--neon);color:#06101F;
  box-shadow:0 0 22px rgba(56,232,255,.5);
}
.btn-amber{
  background:var(--amber);border-color:var(--amber);color:#2A1B00;border-radius:999px;
}
.btn-amber:hover{background:#FFB83B;border-color:#FFB83B;color:#2A1B00;box-shadow:0 0 20px rgba(245,165,36,.45)}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-lg{padding:14px 30px;font-size:16.5px}
.btn[disabled],.btn.disabled{opacity:.5;pointer-events:none}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:#0A1024;
  box-shadow:var(--sh-nav);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
  opacity:.9;
}
.header-inner{
  height:var(--nav-h);display:flex;align-items:center;gap:24px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:800;font-size:16.5px;letter-spacing:.01em;
  white-space:nowrap;text-decoration:none;flex-shrink:0;
}
.brand:hover{color:#fff}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--neon),var(--violet));
  color:#06101F;font-weight:900;font-size:16px;
  box-shadow:0 0 18px rgba(56,232,255,.35);
}
.main-nav{
  display:flex;align-items:center;gap:4px;margin-left:auto;
}
.main-nav a{
  position:relative;color:#B7C2D8;font-size:15px;
  padding:10px 13px;border-radius:10px;
  transition:color var(--tr),background-color var(--tr);
  white-space:nowrap;
}
.main-nav a:hover{color:#B8F4FF;background:rgba(56,232,255,.07)}
.main-nav a.active{color:#fff;font-weight:600}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px rgba(56,232,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#D6E2F5;width:42px;height:42px;border-radius:12px;
  align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  transition:background-color var(--tr),border-color var(--tr);
}
.nav-toggle:hover{background:rgba(56,232,255,.14);border-color:rgba(56,232,255,.5);color:#fff}

.nav-canvas{
  background:#0A1024;color:#D6E2F5;width:310px;border-left:1px solid rgba(56,232,255,.25);
}
.nav-canvas .offcanvas-header{
  border-bottom:1px solid rgba(255,255,255,.08);padding:18px 20px;
}
.nav-canvas .offcanvas-title{color:#fff;font-weight:800;font-size:16px;display:flex;align-items:center;gap:10px}
.nav-canvas .btn-close{
  filter:invert(1) grayscale(1) brightness(1.6);opacity:.75;
}
.nav-canvas .btn-close:hover{opacity:1}
.nav-canvas .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:18px}
.drawer-nav{display:flex;flex-direction:column;gap:14px}
.drawer-nav a{
  color:#C4D0E6;font-size:15.5px;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:#fff;background:rgba(56,232,255,.10);border-color:rgba(56,232,255,.42);
}
.drawer-nav a.active::after{content:"\f0da";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--neon);font-size:12px}
.drawer-cta{margin-top:auto}

@media (max-width:1100px){
  .main-nav a{font-size:14px;padding:9px 10px}
}
@media (max-width:991.98px){
  :root{--nav-h:56px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{gap:14px}
  .brand{font-size:15px}
  .brand-mark{width:30px;height:30px;font-size:14px;border-radius:9px}
  .header-actions .btn-neon{display:none}
}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;
  background:
    radial-gradient(900px 420px at 88% -8%,rgba(56,232,255,.20),transparent 65%),
    radial-gradient(700px 380px at 4% 100%,rgba(31,79,216,.12),transparent 70%),
    linear-gradient(180deg,#EDF3FF 0%,#F6F8FC 100%);
  padding:68px 0 60px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(31,79,216,.16) 1px,transparent 1.4px);
  background-size:32px 32px;opacity:.35;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:52px;align-items:center;
}
.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--muted);
  background:rgba(255,255,255,.75);border:1px solid var(--line);
  border-radius:999px;padding:7px 16px;width:fit-content;margin-bottom:22px;
}
.breadcrumb-bar a{color:var(--muted)}
.breadcrumb-bar a:hover{color:var(--cyan)}
.breadcrumb-bar .sep{color:#B9C4D8}
.breadcrumb-bar .current{color:var(--text-strong);font-weight:600}
.page-hero h1{
  font-size:clamp(2.05rem,3.5vw,3.05rem);
  line-height:1.2;margin-bottom:18px;letter-spacing:-.01em;
}
.page-hero h1 .hl{
  color:var(--brand);
  background:linear-gradient(180deg,transparent 66%,rgba(56,232,255,.38) 66%);
  padding:0 2px;
}
.hero-lead{
  font-size:17px;color:#40506B;line-height:1.85;max-width:640px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 15px;font-size:13.5px;color:#33405A;font-weight:500;
  box-shadow:0 4px 14px rgba(16,34,74,.05);
}
.tag-chip i{color:var(--cyan);font-size:12px}
.hero-visual{position:relative}
.hero-visual .frame{
  border-radius:24px;overflow:hidden;border:1px solid #D9E4F7;
  box-shadow:0 24px 60px rgba(16,34,74,.16);background:#fff;
}
.hero-visual .frame img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-visual .orbit{
  position:absolute;border-radius:50%;border:1px dashed rgba(31,79,216,.28);
  pointer-events:none;
}
.hero-visual .orbit.o1{width:180px;height:180px;top:-38px;right:-34px}
.hero-visual .orbit.o2{width:110px;height:110px;bottom:-26px;left:-28px;border-color:rgba(18,184,200,.35)}
.hero-visual .dot{
  position:absolute;width:10px;height:10px;border-radius:50%;background:var(--neon);
  box-shadow:0 0 16px rgba(56,232,255,.9);
}
.hero-visual .dot.d1{top:14px;right:60px}
.hero-visual .dot.d2{bottom:34px;left:26px;background:var(--amber);box-shadow:0 0 16px rgba(245,165,36,.8)}
.hero-badge-float{
  position:absolute;left:-18px;bottom:26px;z-index:2;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:14px 18px;box-shadow:0 16px 40px rgba(16,34,74,.14);
  display:flex;align-items:center;gap:12px;
}
.hero-badge-float .num{font-size:20px;font-weight:800;color:var(--brand);line-height:1}
.hero-badge-float .txt{font-size:12.5px;color:var(--muted);line-height:1.4}

@media (max-width:991.98px){
  .page-hero{padding:44px 0 46px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-badge-float{left:12px;bottom:12px}
}
@media (max-width:575.98px){
  .hero-actions .btn{width:100%}
  .page-hero h1{font-size:1.85rem}
  .hero-lead{font-size:15.5px}
}

/* ============ 主体：左目录 + 右内容 ============ */
.cat-layout{
  display:grid;grid-template-columns:296px minmax(0,1fr);gap:46px;align-items:start;
}
.toc-card{
  position:sticky;top:calc(var(--nav-h) + 24px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 18px;box-shadow:var(--sh-card);
}
.toc-label{
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--muted);
  margin-bottom:14px;padding-left:12px;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px}
.toc-list li{margin:0}
.toc-list a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 12px;border-radius:10px;border-left:2px solid transparent;
  color:#33405A;font-size:14.5px;line-height:1.5;
}
.toc-list a .idx{font-size:12px;font-weight:800;color:#98A6BF;flex-shrink:0}
.toc-list a:hover{background:#F2F7FF;color:var(--brand)}
.toc-list a.active{
  background:#EAF1FF;color:var(--brand);font-weight:600;border-left-color:var(--neon);
}
.toc-list a.active .idx{color:var(--brand)}
.toc-note{
  margin-top:18px;padding:16px;border-radius:14px;
  background:linear-gradient(160deg,#0E1630,#14224A);color:#C7D5EE;
  font-size:13px;line-height:1.7;
}
.toc-note strong{display:block;color:#fff;font-size:13.5px;margin-bottom:6px}
.toc-note .row-line{display:flex;justify-content:space-between;gap:10px;padding:5px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.toc-note .row-line:last-child{border-bottom:0}
.toc-note .ok-dot{color:#5BE7C4;font-weight:700}

.doc-block{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 32px;box-shadow:var(--sh-card);margin-bottom:24px;
  scroll-margin-top:calc(var(--nav-h) + 28px);
  transition:box-shadow var(--tr),transform var(--tr);
}
.doc-block:hover{box-shadow:var(--sh-hover)}
.doc-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:16px}
.doc-index{
  flex-shrink:0;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;font-weight:800;font-size:15px;
  color:var(--brand);background:rgba(31,79,216,.09);border:1px solid rgba(31,79,216,.16);
}
.doc-head h2{font-size:1.32rem;margin:0;line-height:1.4}
.doc-head .sub{font-size:13.5px;color:var(--muted);margin-top:4px}
.doc-block p{color:#3C4A63;font-size:15.8px;line-height:1.85}
.doc-block h3{font-size:1.05rem;margin:22px 0 10px}

.check-list{list-style:none;margin:0 0 18px;padding:0}
.check-list li{
  position:relative;padding-left:34px;margin-bottom:12px;
  font-size:15.5px;line-height:1.75;color:#33405A;
}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:3px;width:22px;height:22px;border-radius:8px;
  display:grid;place-items:center;font-size:10.5px;
  color:var(--brand);background:rgba(31,79,216,.10);
}
.num-list{list-style:none;margin:0 0 18px;padding:0;counter-reset:step}
.num-list li{
  position:relative;padding-left:40px;margin-bottom:13px;
  font-size:15.5px;line-height:1.75;color:#33405A;counter-increment:step;
}
.num-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:26px;height:26px;border-radius:9px;
  display:grid;place-items:center;font-size:11.5px;font-weight:800;
  color:#fff;background:linear-gradient(135deg,var(--brand),#3B6BEE);
}
.num-list li strong{color:var(--text-strong)}

.callout{
  border-radius:14px;padding:16px 18px 16px 20px;margin:20px 0;
  font-size:14.8px;line-height:1.8;border-left:4px solid;
  display:flex;gap:12px;align-items:flex-start;
}
.callout i{margin-top:4px;font-size:15px}
.callout p{margin:0}
.callout-info{background:#EEF5FF;border-color:var(--cyan);color:#264369}
.callout-info i{color:var(--cyan)}
.callout-warn{background:#FFF7EA;border-color:var(--amber);color:#6B4A12}
.callout-warn i{color:var(--amber)}
.callout-safe{background:#EDFAF4;border-color:var(--ok);color:#14563D}
.callout-safe i{color:var(--ok)}

.figure-card{
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:#fff;
  box-shadow:var(--sh-card);margin:22px 0;
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure-card figcaption{
  font-size:13px;color:var(--muted);padding:12px 16px;text-align:center;background:#FAFBFF;
  border-top:1px solid var(--line-soft);
}

.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 16px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px;
  background:#EEF4FF;color:#25469C;border:1px solid #DAE6FF;
}
.pill.amber{background:#FFF4E2;color:#7A5210;border-color:#FBE1B4}
.pill.cyan{background:#E9FAFC;color:#0E6C77;border-color:#C7EDF2}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}
.mini-card{
  background:#FAFBFF;border:1px solid var(--line-soft);border-radius:14px;padding:16px 18px;
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.mini-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(16,34,74,.10);border-color:#D6E3FA}
.mini-card h4{font-size:15px;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.mini-card h4 i{color:var(--cyan);font-size:14px}
.mini-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}

@media (max-width:991.98px){
  .cat-layout{grid-template-columns:1fr;gap:26px}
  .toc-card{position:static;padding:18px}
  .toc-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
  .doc-block{padding:24px 20px}
}
@media (max-width:575.98px){
  .toc-list{grid-template-columns:1fr}
  .mini-grid{grid-template-columns:1fr}
  .doc-index{width:40px;height:40px;border-radius:12px;font-size:13.5px}
  .doc-block p,.check-list li,.num-list li{font-size:15px}
}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);gap:48px;align-items:start}
.faq-intro h2{font-size:clamp(1.6rem,2.4vw,2.1rem)}
.faq-intro p{color:var(--muted);font-size:15.5px;line-height:1.85}
.faq-intro .hint-card{
  margin-top:22px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--neon);
  border-radius:14px;padding:16px 18px;font-size:14px;color:#3C4A63;box-shadow:var(--sh-card);
}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:16px !important;
  margin-bottom:14px;overflow:hidden;box-shadow:0 6px 20px rgba(16,34,74,.05);
}
.faq-acc .accordion-header{margin:0}
.faq-acc .accordion-button{
  background:#fff;color:#16213C;font-weight:700;font-size:16px;
  padding:20px 22px;border:0;box-shadow:none;border-left:4px solid transparent;
  border-radius:0 !important;
}
.faq-acc .accordion-button:not(.collapsed){
  background:#F4F8FF;color:var(--brand);border-left-color:var(--neon);
}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;border-left-color:var(--neon)}
.faq-acc .accordion-button::after{
  content:"+";background-image:none;font-size:20px;font-weight:700;line-height:1;
  width:auto;height:auto;color:var(--brand);transform:none;
  display:flex;align-items:center;justify-content:center;
  transition:transform .2s ease,color .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(0);color:var(--cyan)}
.faq-acc .accordion-body{
  padding:6px 22px 22px;font-size:15px;line-height:1.85;color:#3C4A63;
  border-top:1px dashed var(--line-soft);
}
.faq-acc .accordion-body ul{margin:10px 0 0;padding-left:1.1em}
@media (max-width:991.98px){
  .faq-wrap{grid-template-columns:1fr;gap:28px}
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#EAF1FF 0%,#F3F8FF 46%,#EAF7FB 100%);
  border:1px solid #D8E4FA;
  border-radius:26px;
  padding:48px 44px;
  box-shadow:0 20px 50px rgba(16,34,74,.09);
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);
  gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.35),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(1.5rem,2.2vw,2rem);margin-bottom:12px}
.cta-band p{color:#42557A;font-size:15.5px;margin:0;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn{width:100%}
@media (max-width:991.98px){
  .cta-band{grid-template-columns:1fr;padding:34px 24px;gap:24px}
}
@media (max-width:575.98px){
  .cta-band{border-radius:20px}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:#0A1024;color:#A9B6CE;margin-top:80px;padding:64px 0 24px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),var(--violet));
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1.1fr) minmax(0,1.2fr);
  gap:40px;padding-bottom:40px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;
}
.footer-about{font-size:14px;line-height:1.85;color:#8E9DB8;margin:0;max-width:340px}
.footer-col h4{
  color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#A9B6CE;font-size:14px}
.footer-links a:hover{color:var(--neon)}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:13.6px;color:#8E9DB8;line-height:1.7}
.footer-contact i{color:var(--cyan);margin-right:8px;width:16px;display:inline-block}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7E8CA6;
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:48px 0 20px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1040;
  display:flex;align-items:center;gap:14px;
  background:rgba(10,16,36,.96);
  border:1px solid rgba(56,232,255,.5);
  border-radius:999px;padding:10px 12px 10px 20px;
  box-shadow:0 18px 44px rgba(6,14,34,.42),0 0 24px rgba(56,232,255,.18);
  color:#D6E2F5;font-size:13.8px;
  opacity:0;transform:translateY(18px);pointer-events:none;
  transition:opacity var(--tr),transform var(--tr);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .fc-text{white-space:nowrap}
.float-cta .fc-text strong{color:#fff}
.float-close{
  width:30px;height:30px;border-radius:50%;flex-shrink:0;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  color:#C4D0E6;font-size:15px;line-height:1;cursor:pointer;
  display:grid;place-items:center;transition:background-color var(--tr),color var(--tr);
}
.float-close:hover{background:rgba(228,87,87,.24);color:#fff;border-color:rgba(228,87,87,.5)}
@media (max-width:767.98px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;border-width:1px 0 0 0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));
    justify-content:space-between;gap:10px;
  }
  .float-cta .fc-text{font-size:12.8px;white-space:normal;line-height:1.4}
  .float-cta .fc-text strong{display:block}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1740B8;
  --brand-soft:#EAF0FF;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --neon-soft:#B8F4FF;
  --amber:#F5A524;
  --nav-bg:#0A1024;
  --nav-bg-2:#0E1630;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6475;
  --border:#E3E9F5;
  --ok:#1FA971;
  --warn:#E6A23C;
  --err:#E45757;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-card:0 10px 30px rgba(16,34,74,.08);
  --shadow-hover:0 16px 44px rgba(16,34,74,.14);
  --container:1320px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--cyan);}
h1,h2,h3,h4{font-weight:800;line-height:1.25;margin:0 0 .6em;color:var(--text);letter-spacing:-.01em;}
h1{font-size:clamp(2rem,4vw,3.1rem);}
h2{font-size:clamp(1.55rem,2.6vw,2.2rem);}
h3{font-size:clamp(1.15rem,1.6vw,1.4rem);}
p{margin:0 0 1.05em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(56,232,255,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:1200px) and (max-width:1399px){.container{max-width:1140px;}}
@media (min-width:992px) and (max-width:1199px){.container{max-width:960px;}}
@media (min-width:768px) and (max-width:991px){.container{max-width:720px;}}
@media (max-width:767px){.container{padding:0 16px;}}

/* ============ Header / Nav ============ */
.site-header{
  background:linear-gradient(180deg,var(--nav-bg) 0%,var(--nav-bg-2) 100%);
  position:sticky;top:0;z-index:1030;
  border-bottom:1px solid transparent;
}
.site-header::after{
  content:"";display:block;height:1px;width:100%;
  background:linear-gradient(90deg,#38E8FF 0%,#7C5CFF 100%);
  opacity:.85;
}
.header-inner{
  height:68px;display:flex;align-items:center;gap:24px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:800;font-size:17px;letter-spacing:.2px;white-space:nowrap;
}
.brand:hover{color:var(--neon-soft);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#1F4FD8 0%,#12B8C8 100%);
  color:#fff;font-size:16px;font-weight:800;
  box-shadow:0 0 0 1px rgba(56,232,255,.45),0 6px 18px rgba(18,184,200,.35);
}
.main-nav{
  display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap;
}
.main-nav a{
  position:relative;color:#C7D2E8;font-size:14.5px;font-weight:500;
  padding:9px 12px;border-radius:10px;white-space:nowrap;
}
.main-nav a:hover{color:var(--neon-soft);background:rgba(56,232,255,.08);}
.main-nav a.active{color:#fff;}
.main-nav a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px rgba(56,232,255,.9);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;
  color:#04121C;background:linear-gradient(135deg,#38E8FF 0%,#12B8C8 100%);
  border:1px solid rgba(56,232,255,.7);
  box-shadow:0 8px 22px rgba(18,184,200,.32);
  transition:transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.header-cta:hover{color:#04121C;transform:translateY(-2px);box-shadow:0 12px 30px rgba(56,232,255,.45);}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  background:rgba(56,232,255,.1);border:1px solid rgba(56,232,255,.35);color:var(--neon);
  align-items:center;justify-content:center;font-size:18px;cursor:pointer;
}
.nav-toggle:hover{background:rgba(56,232,255,.2);}
@media (max-width:1199px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:767px){
  .header-inner{height:56px;}
  .brand{font-size:15px;}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:14px;}
}
.offcanvas.mobile-nav{background:linear-gradient(180deg,#0A1024 0%,#0E1630 100%);color:#fff;border-right:1px solid rgba(56,232,255,.25);}
.mobile-nav .offcanvas-header{border-bottom:1px solid rgba(56,232,255,.2);padding:18px 20px;}
.mobile-nav .offcanvas-title{color:#fff;font-weight:800;font-size:16px;}
.mobile-nav .btn-close{filter:invert(1) grayscale(1);opacity:.8;}
.mobile-nav .offcanvas-body{padding:18px 20px 24px;display:flex;flex-direction:column;height:100%;}
.mobile-nav a.m-link{
  display:block;color:#C7D2E8;padding:14px 4px;font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-nav a.m-link:hover,.mobile-nav a.m-link.active{color:var(--neon);}
.mobile-nav .m-cta{
  margin-top:auto;display:flex;align-items:center;justify-content:center;
  padding:14px;border-radius:14px;font-weight:700;color:#04121C;
  background:linear-gradient(135deg,#38E8FF 0%,#12B8C8 100%);
}

/* ============ Breadcrumb ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--border);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--muted);margin:0;background:transparent;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--cyan);}
.crumb .sep{color:#C3CDE0;}
.crumb .current{color:var(--text);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#F3F7FF 0%,#E8EFFF 55%,#F6F8FC 100%);
  padding:72px 0 64px;
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(56,232,255,.20) 0%,rgba(31,79,216,.06) 45%,transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,#CFE0FF 20%,#CFE0FF 80%,transparent);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);color:var(--brand);
  font-size:13px;font-weight:700;padding:7px 14px;border-radius:999px;
  box-shadow:0 6px 18px rgba(16,34,74,.06);margin-bottom:20px;
}
.hero-badge i{color:var(--cyan);}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(56,232,255,.42) 62%);
  padding:0 2px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:640px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--brand);color:#fff;font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid var(--brand);
  box-shadow:0 8px 20px rgba(31,79,216,.22);
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(31,79,216,.28);}
.btn-main:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  background:#fff;color:var(--brand);font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid #C6D5F5;
  transition:all .18s ease;
}
.btn-ghost:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:scale(.98);}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.85);border:1px solid var(--border);
  border-radius:999px;padding:8px 15px;font-size:13px;color:var(--muted);font-weight:500;
}
.trust-chip i{color:var(--cyan);}
.hero-visual{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid #D6E2FA;box-shadow:0 24px 60px rgba(16,34,74,.16);
  background:#0A1024;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;opacity:.94;}
.hero-visual .v-tag{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(10,16,36,.82);border:1px solid rgba(56,232,255,.5);color:var(--neon-soft);
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;
  backdrop-filter:blur(2px);
}
@media (max-width:991px){
  .hero{padding:52px 0 48px;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .hero-sub{font-size:16px;}
}

/* ============ 区块通用 ============ */
.section{padding:82px 0;}
.section.alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--cyan);background:var(--brand-soft);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.section-head p{color:var(--muted);margin:0;font-size:16px;}
@media (max-width:767px){.section{padding:54px 0;}.section-head{margin-bottom:30px;}}

/* ============ 步骤时间线 ============ */
.steps-shell{position:relative;}
.steps-shell::before{
  content:"";position:absolute;left:29px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(56,232,255,.9) 0%,rgba(31,79,216,.25) 55%,rgba(31,79,216,.05) 100%);
  border-radius:2px;
}
.step-row{
  position:relative;display:grid;grid-template-columns:60px 1fr;gap:22px;
  padding:0 0 26px;
}
.step-dot{
  width:60px;height:60px;border-radius:50%;flex:0 0 60px;position:relative;z-index:2;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);
  box-shadow:0 8px 22px rgba(16,34,74,.08);
  font-weight:800;font-size:16px;color:var(--brand);
}
.step-dot i{font-size:19px;color:var(--cyan);}
.step-row.is-active .step-dot{
  background:linear-gradient(135deg,#0A1024 0%,#132A63 100%);
  border-color:rgba(56,232,255,.85);
  box-shadow:0 0 0 4px rgba(56,232,255,.18),0 10px 26px rgba(18,184,200,.3);
}
.step-row.is-active .step-dot i,.step-row.is-active .step-dot span{color:var(--neon);}
.step-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px 26px;transition:transform .22s ease,box-shadow .22s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-card h3{margin-bottom:10px;font-size:19px;}
.step-card p{color:var(--muted);font-size:15px;margin-bottom:12px;}
.step-card p:last-child{margin-bottom:0;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;border-radius:999px;padding:5px 12px;
  background:var(--brand-soft);color:var(--brand);border:1px solid #D3E0FF;
}
.chip.cyan{background:#E4FAFE;color:#0E8B99;border-color:#BFEFF5;}
.chip.amber{background:#FFF5E3;color:#B4760F;border-color:#FBE2B8;}
.chip.ok{background:#E7F7F0;color:#137A52;border-color:#C4EBDC;}
.check-list li{
  position:relative;padding-left:24px;color:var(--muted);font-size:14.5px;margin-bottom:7px;
}
.check-list li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;color:var(--ok);font-size:12px;
}
@media (max-width:575px){
  .steps-shell::before{left:22px;}
  .step-row{grid-template-columns:46px 1fr;gap:14px;}
  .step-dot{width:46px;height:46px;flex:0 0 46px;font-size:14px;}
  .step-dot i{font-size:15px;}
  .step-card{padding:18px;}
}

/* ============ 证据条 ============ */
.proof-band{
  background:linear-gradient(135deg,#0A1024 0%,#111E45 60%,#0E1630 100%);
  border-radius:22px;padding:38px 34px;color:#fff;
  border:1px solid rgba(56,232,255,.22);
  box-shadow:0 24px 60px rgba(10,16,36,.28);
  position:relative;overflow:hidden;
}
.proof-band::before{
  content:"";position:absolute;right:-70px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.22),transparent 68%);
}
.proof-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.proof-item{border-left:1px solid rgba(255,255,255,.14);padding-left:18px;}
.proof-item:first-child{border-left:0;padding-left:0;}
.proof-num{font-size:clamp(1.7rem,2.6vw,2.3rem);font-weight:800;color:var(--neon);font-variant-numeric:tabular-nums;line-height:1.15;}
.proof-label{font-size:13.5px;color:#A9B6D2;margin-top:4px;}
@media (max-width:767px){
  .proof-band{padding:26px 20px;border-radius:18px;}
  .proof-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .proof-item:nth-child(3){border-left:0;padding-left:0;}
}

/* ============ 报错对照 ============ */
.err-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.err-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);padding:24px;transition:transform .22s ease,box-shadow .22s ease;
  display:flex;flex-direction:column;gap:12px;
}
.err-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.err-card .ico{
  width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#EAF0FF,#E4FAFE);color:var(--brand);font-size:19px;
}
.err-card h3{font-size:17.5px;margin:0;}
.err-card .sym{
  font-size:13px;color:var(--muted);background:#F4F7FD;border:1px dashed #D6E1F5;
  border-radius:10px;padding:9px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  word-break:break-all;
}
.err-card p{font-size:14.5px;color:var(--muted);margin:0;}
.err-card .fix{font-size:14px;color:var(--text);font-weight:600;margin:0;}
@media (max-width:991px){.err-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575px){.err-grid{grid-template-columns:1fr;}}

/* ============ 提示框 ============ */
.notice{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:flex-start;
  background:#FFFBF2;border:1px solid #FBE2B8;border-left:4px solid var(--amber);
  border-radius:14px;padding:20px 22px;
}
.notice i{color:var(--amber);font-size:20px;margin-top:2px;}
.notice h3{font-size:17px;margin-bottom:6px;}
.notice p{margin:0;font-size:14.5px;color:#7A6136;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start;}
.faq-intro p{color:var(--muted);font-size:15.5px;}
.faq-intro .btn-ghost{margin-top:6px;}
.acc-item{
  background:#fff;border:1px solid var(--border);border-radius:14px;
  margin-bottom:14px;overflow:hidden;position:relative;
  box-shadow:0 4px 16px rgba(16,34,74,.05);transition:box-shadow .2s ease;
}
.acc-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:transparent;transition:background .2s ease;
}
.acc-item.open{box-shadow:0 10px 30px rgba(16,34,74,.10);}
.acc-item.open::before{background:var(--neon);}
.acc-q{
  width:100%;background:transparent;border:0;text-align:left;
  padding:18px 54px 18px 22px;font-size:16px;font-weight:600;color:var(--text);
  position:relative;cursor:pointer;line-height:1.55;
}
.acc-q:hover{color:var(--brand);}
.acc-q .sign{
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:700;
  transition:transform .2s ease,background .2s ease,color .2s ease;
}
.acc-item.open .acc-q .sign{background:var(--cyan);color:#fff;transform:translateY(-50%) rotate(180deg);}
.acc-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
}
.acc-item.open .acc-a{max-height:520px;}
.acc-a-inner{padding:0 22px 20px 22px;color:var(--muted);font-size:15px;line-height:1.85;}
.acc-a-inner p:last-child{margin-bottom:0;}
@media (max-width:991px){.faq-wrap{grid-template-columns:1fr;gap:28px;}}

/* ============ CTA ============ */
.cta-block{
  background:linear-gradient(135deg,#1B3EA8 0%,#1F4FD8 45%,#12B8C8 130%);
  border-radius:24px;padding:52px 46px;color:#fff;position:relative;overflow:hidden;
  box-shadow:0 26px 60px rgba(31,79,216,.28);
}
.cta-block::before{
  content:"";position:absolute;right:-80px;bottom:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.32),transparent 66%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr .6fr;gap:32px;align-items:center;}
.cta-block h2{color:#fff;margin-bottom:12px;}
.cta-block p{color:rgba(255,255,255,.86);margin:0;font-size:16px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.btn-light-solid{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:#fff;color:var(--brand);font-weight:700;font-size:15px;
  padding:14px 24px;border-radius:var(--radius-btn);border:1px solid #fff;
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn-light-solid:hover{color:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.18);}
.btn-outline-light2{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:transparent;color:#fff;font-weight:700;font-size:15px;
  padding:14px 24px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.6);
  transition:all .18s ease;
}
.btn-outline-light2:hover{background:rgba(255,255,255,.14);color:#fff;}
@media (max-width:991px){
  .cta-block{padding:34px 24px;border-radius:20px;}
  .cta-inner{grid-template-columns:1fr;}
}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.rel-card{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
  transition:transform .22s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.rel-card img{width:86px;height:70px;border-radius:12px;object-fit:cover;flex:0 0 86px;}
.rel-card h3{font-size:16.5px;margin-bottom:6px;}
.rel-card p{font-size:13.8px;color:var(--muted);margin:0;}
@media (max-width:991px){.rel-grid{grid-template-columns:1fr;}}

/* ============ Footer ============ */
.site-footer{
  background:var(--nav-bg);color:#98A6C4;position:relative;margin-top:0;
}
.site-footer::before{
  content:"";display:block;height:1px;width:100%;
  background:linear-gradient(90deg,#0A1024,#38E8FF 45%,#7C5CFF 65%,#0A1024);
  opacity:.85;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:38px;
  padding:58px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;}
.footer-about{font-size:14px;line-height:1.85;color:#8E9CBC;margin:0;max-width:360px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#98A6C4;font-size:14px;}
.footer-links a:hover{color:var(--neon);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:13.6px;color:#98A6C4;line-height:1.75;}
.footer-contact i{color:var(--neon);margin-right:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7E8CAC;
}
@media (max-width:1199px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1050;
  display:flex;align-items:center;gap:12px;
  background:rgba(10,16,36,.96);border:1px solid rgba(56,232,255,.55);
  border-radius:999px;padding:10px 12px 10px 20px;color:#fff;
  box-shadow:0 18px 42px rgba(10,16,36,.36);
  transform:translateY(24px);opacity:0;pointer-events:none;
  transition:transform .28s ease,opacity .28s ease;
}
.float-cta.show{transform:translateY(0);opacity:1;pointer-events:auto;}
.float-cta .txt{font-size:13.5px;color:var(--neon-soft);white-space:nowrap;}
.float-cta .go{
  display:inline-flex;align-items:center;gap:7px;
  background:linear-gradient(135deg,#38E8FF,#12B8C8);color:#04121C;
  font-weight:700;font-size:13.5px;padding:9px 16px;border-radius:999px;
}
.float-cta .go:hover{color:#04121C;}
.float-cta .close{
  width:28px;height:28px;border-radius:50%;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#8E9CBC;display:flex;align-items:center;justify-content:center;
  font-size:12px;cursor:pointer;
}
.float-cta .close:hover{color:#fff;border-color:rgba(255,255,255,.5);}
@media (max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:16px 16px 0 0;padding:12px 14px;
    padding-bottom:calc(12px + env(safe-area-inset-bottom));
    justify-content:space-between;transform:translateY(100%);
  }
  .float-cta.show{transform:translateY(0);}
  .float-cta .txt{font-size:13px;}
}

/* roulang page: category4 */
:root{
  --brand:#1F4FD8;
  --brand-dark:#1740B8;
  --cyan:#12B8C8;
  --neon:#38E8FF;
  --neon-soft:#B8F4FF;
  --amber:#F5A524;
  --navy:#0A1024;
  --navy-2:#0E1630;
  --bg:#F6F8FC;
  --paper:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6475;
  --line:#E3E9F5;
  --line-strong:#D9E2F2;
  --success:#1FA971;
  --warning:#E6A23C;
  --danger:#E45757;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-card:0 10px 30px rgba(16,34,74,.08);
  --shadow-hover:0 16px 44px rgba(16,34,74,.14);
  --section-y:88px;
  --font: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand-dark);}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:800;line-height:1.25;color:var(--text);letter-spacing:-.01em;}
h1{font-size:clamp(2.2rem,1.6rem + 2.2vw,3.4rem);}
h2{font-size:clamp(1.6rem,1.25rem + 1.4vw,2.25rem);}
h3{font-size:clamp(1.15rem,1.05rem + .5vw,1.45rem);}
p{margin:0 0 1em;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,232,255,.45);border-radius:8px;}

.container{width:100%;max-width:1320px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (max-width:1399.98px){.container{max-width:1140px;}}
@media (max-width:1199.98px){.container{max-width:960px;}}
@media (max-width:991.98px){.container{max-width:720px;}}
@media (max-width:767.98px){.container{max-width:100%;padding-left:18px;padding-right:18px;}}

.section{padding:var(--section-y) 0;}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;margin-bottom:12px;}
.section-head .eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--neon),var(--brand));border-radius:2px;}
.section-head p{color:var(--muted);font-size:16px;margin:0;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-2) 100%);
  border-bottom:1px solid rgba(56,232,255,.28);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,var(--neon),#7C5CFF 55%,transparent);
  opacity:.9;
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:68px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-weight:800;font-size:17px;letter-spacing:.01em;white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--neon),#7C5CFF);
  color:#06121F;font-weight:900;font-size:17px;
  box-shadow:0 0 0 1px rgba(56,232,255,.45),0 6px 18px rgba(56,232,255,.25);
}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;font-weight:600;
  color:#C9D4E8;border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.main-nav a:hover{color:var(--neon-soft);background:rgba(56,232,255,.07);}
.main-nav a.active{color:#fff;background:rgba(56,232,255,.08);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px var(--neon);
}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  font-size:14px;font-weight:700;color:#04121E;
  background:linear-gradient(120deg,var(--neon),#5EEAD4);
  border:1px solid rgba(56,232,255,.6);
  box-shadow:0 8px 22px rgba(56,232,255,.25);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.header-cta:hover{color:#04121E;transform:translateY(-2px);box-shadow:0 12px 28px rgba(56,232,255,.4);filter:brightness(1.05);}
.header-cta:active{transform:scale(.98);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(56,232,255,.08);border:1px solid rgba(56,232,255,.35);
  color:var(--neon);font-size:18px;
}
.nav-burger:hover{background:rgba(56,232,255,.16);}

/* ============ Drawer ============ */
.nav-drawer{background:var(--navy);color:#fff;width:300px;}
.nav-drawer .offcanvas-header{border-bottom:1px solid rgba(56,232,255,.22);padding:16px 20px;}
.nav-drawer .offcanvas-title{color:#fff;font-size:16px;font-weight:800;margin:0;}
.nav-drawer .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.8;}
.nav-drawer .offcanvas-body{padding:14px 16px 20px;display:flex;flex-direction:column;gap:6px;}
.nav-drawer a{
  display:block;padding:13px 14px;border-radius:12px;
  color:#D5DEEC;font-size:15px;font-weight:600;
}
.nav-drawer a:hover{background:rgba(56,232,255,.1);color:var(--neon-soft);}
.nav-drawer a.active{background:rgba(56,232,255,.14);color:#fff;box-shadow:inset 3px 0 0 var(--neon);}
.drawer-cta{margin-top:14px;justify-content:center;width:100%;}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-burger{display:grid;place-items:center;}
  .header-inner{height:56px;}
  .brand{font-size:15px;}
  .brand-mark{width:30px;height:30px;flex-basis:30px;font-size:15px;}
}

/* ============ Breadcrumb ============ */
.crumb-bar{background:#EEF3FC;border-bottom:1px solid var(--line);}
.crumb-bar .container{padding-top:14px;padding-bottom:14px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;background:transparent;font-size:13.5px;}
.breadcrumb li{color:var(--muted);display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B7C3D8;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .current{color:var(--text);font-weight:700;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#EEF4FF 0%,#F6F8FC 52%,#EAF1FE 100%);
  padding:76px 0 68px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(31,79,216,.12) 1px,transparent 1.6px);
  background-size:26px 26px;opacity:.55;pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:52px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:rgba(31,79,216,.1);color:var(--brand);
  font-size:13px;font-weight:700;margin-bottom:18px;
}
.hero-tag i{color:var(--amber);}
.cat-hero h1{margin-bottom:18px;}
.cat-hero h1 .accent{
  background:linear-gradient(100deg,var(--brand),var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--muted);max-width:600px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-weight:700;font-size:15px;border:1px solid var(--brand);
  box-shadow:0 8px 20px rgba(31,79,216,.18);
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
}
.btn-main:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(31,79,216,.3);}
.btn-main:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius-btn);
  background:#fff;color:var(--brand);font-weight:700;font-size:15px;border:1px solid var(--line-strong);
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease;
}
.btn-ghost:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px);box-shadow:0 10px 24px rgba(31,79,216,.22);}
.btn-ghost:active{transform:scale(.98);}

.trust-row{display:flex;flex-wrap:wrap;gap:12px;}
.trust-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:12px;background:#fff;
  border:1px solid var(--line);box-shadow:0 6px 18px rgba(16,34,74,.05);
  font-size:13.5px;font-weight:600;color:var(--text);
}
.trust-chip i{color:var(--cyan);}

.hero-visual{position:relative;}
.hero-visual .frame{
  border-radius:22px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(16,34,74,.16);background:#0A1024;
}
.hero-visual .frame img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-visual .float-card{
  position:absolute;left:-22px;bottom:-26px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px 20px;box-shadow:var(--shadow-hover);max-width:250px;
}
.hero-visual .float-card strong{display:block;font-size:24px;color:var(--brand);line-height:1.1;}
.hero-visual .float-card span{font-size:13px;color:var(--muted);}
.hero-visual .star{
  position:absolute;width:8px;height:8px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 14px var(--neon);
}
.hero-visual .star.s1{top:14px;right:36px;}
.hero-visual .star.s2{top:56px;right:-8px;width:6px;height:6px;background:var(--amber);box-shadow:0 0 14px var(--amber);}
@media (max-width:991.98px){
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .cat-hero{padding:52px 0 56px;}
  .hero-visual .float-card{position:static;margin-top:16px;max-width:100%;}
  .hero-lead{font-size:16px;}
}

/* ============ 更新速览 ============ */
.overview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.ov-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease;
}
.ov-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.ov-card .num{font-size:30px;font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-.02em;}
.ov-card .num small{font-size:14px;font-weight:700;color:var(--muted);margin-left:4px;}
.ov-card .lbl{font-size:13.5px;color:var(--muted);margin-top:6px;}
.ov-card .dot{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:rgba(18,184,200,.12);color:var(--cyan);margin-bottom:14px;}
@media (max-width:991.98px){.overview-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:575.98px){.overview-grid{grid-template-columns:1fr;}}

/* ============ 对比表 ============ */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
}
.compare-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 26px;border-bottom:1px solid var(--line);background:#FAFCFF;
}
.compare-head h3{margin:0;font-size:19px;}
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.cmp{width:100%;border-collapse:collapse;min-width:840px;font-size:15px;}
table.cmp thead th{
  text-align:left;padding:16px 22px;font-size:13.5px;font-weight:800;
  color:#fff;background:linear-gradient(120deg,#16307F,var(--brand));white-space:nowrap;
}
table.cmp thead th:first-child{background:#122B72;}
table.cmp tbody td{padding:17px 22px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--text);}
table.cmp tbody tr:nth-child(even){background:#F8FBFF;}
table.cmp tbody tr:hover{background:#EEF5FF;}
table.cmp tbody tr:last-child td{border-bottom:none;}
table.cmp .col-item{font-weight:700;color:var(--brand);white-space:nowrap;}
.badge-state{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:rgba(31,169,113,.12);color:var(--success);white-space:nowrap;
}
.badge-state.old{background:rgba(90,100,117,.12);color:var(--muted);}
.badge-state.new{background:rgba(31,79,216,.12);color:var(--brand);}
@media (max-width:575.98px){
  .compare-head{padding:18px;}
  table.cmp{font-size:14px;}
  table.cmp thead th,table.cmp tbody td{padding:14px 16px;}
}

/* ============ 公告条目 ============ */
.notice-list{display:grid;gap:18px;}
.notice-item{
  display:grid;grid-template-columns:150px minmax(0,1fr) auto;gap:22px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--line);
  border-radius:14px;padding:22px 24px;box-shadow:0 6px 20px rgba(16,34,74,.05);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.notice-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.notice-item.key{border-left-color:var(--amber);}
.notice-item.sec{border-left-color:var(--neon);}
.notice-date{font-size:13.5px;color:var(--muted);font-weight:700;}
.notice-date strong{display:block;font-size:17px;color:var(--text);font-weight:800;margin-bottom:2px;}
.notice-item h3{font-size:17px;margin:0 0 8px;}
.notice-item p{margin:0;font-size:14.6px;color:var(--muted);line-height:1.7;}
@media (max-width:991.98px){
  .notice-item{grid-template-columns:1fr;gap:12px;}
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{color:var(--muted);font-size:15.5px;}
.faq-aside .aside-note{
  margin-top:22px;padding:18px 20px;border-radius:14px;
  background:#EEF4FF;border:1px solid var(--line);font-size:14px;color:var(--muted);
}
.faq-aside .aside-note i{color:var(--brand);margin-right:6px;}

.accordion-custom .accordion-item{
  background:#fff;border:1px solid var(--line);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;box-shadow:0 6px 18px rgba(16,34,74,.05);
}
.accordion-custom .accordion-button{
  background:#fff;color:var(--text);font-weight:700;font-size:16px;
  padding:19px 22px;border:0;border-radius:14px !important;box-shadow:none;
  display:flex;align-items:center;gap:12px;
}
.accordion-custom .accordion-button:not(.collapsed){
  color:var(--brand);background:#F7FAFF;box-shadow:inset 4px 0 0 var(--neon);
}
.accordion-custom .accordion-button::after{
  background-image:none;content:"+";
  font-size:20px;font-weight:700;line-height:1;color:var(--brand);
  width:26px;height:26px;display:grid;place-items:center;margin-left:auto;
  border-radius:8px;background:rgba(31,79,216,.08);
  transition:transform .2s ease,background .2s ease;
}
.accordion-custom .accordion-button:not(.collapsed)::after{content:"−";background:rgba(56,232,255,.22);}
.accordion-custom .accordion-button:focus{box-shadow:0 0 0 3px rgba(56,232,255,.35);}
.accordion-custom .accordion-body{
  padding:4px 22px 22px;color:var(--muted);font-size:15px;line-height:1.85;
  background:#fff;
}
.accordion-custom .accordion-body p:last-child{margin-bottom:0;}
@media (max-width:991.98px){.faq-grid{grid-template-columns:1fr;gap:28px;}}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  background:linear-gradient(130deg,#0A1024 0%,#122B72 55%,#1F4FD8 100%);
  color:#fff;padding:56px 48px;
  box-shadow:0 24px 60px rgba(16,34,74,.24);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(56,232,255,.35),transparent 68%);
}
.cta-band .inner{position:relative;z-index:2;max-width:760px;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:#C9D9F5;font-size:16px;margin-bottom:26px;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-neon{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  background:var(--neon);color:#04121E;border:1px solid var(--neon);
  box-shadow:0 10px 26px rgba(56,232,255,.3);
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease;
}
.btn-neon:hover{color:#04121E;transform:translateY(-2px);box-shadow:0 14px 32px rgba(56,232,255,.45);filter:brightness(1.06);}
.btn-outline-light2{
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 26px;border-radius:var(--radius-btn);font-weight:700;font-size:15px;
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.btn-outline-light2:hover{background:#fff;color:var(--navy);transform:translateY(-2px);}
@media (max-width:575.98px){.cta-band{padding:34px 22px;border-radius:18px;}}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);color:var(--text);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C9DBFF;color:var(--text);}
.rel-card .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(31,79,216,.1);color:var(--brand);margin-bottom:14px;}
.rel-card h3{font-size:17px;margin-bottom:8px;}
.rel-card p{font-size:14px;color:var(--muted);margin:0;}
.rel-card .go{margin-top:14px;font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.rel-card:hover .go{color:var(--cyan);}
@media (max-width:991.98px){.rel-grid{grid-template-columns:1fr;}}

/* ============ Footer ============ */
.site-footer{
  background:var(--navy);color:#A9B6CE;margin-top:0;
  border-top:1px solid rgba(56,232,255,.3);
  padding:60px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,2.8fr) minmax(0,3.4fr);gap:38px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-about{font-size:14px;line-height:1.8;color:#8E9CB8;margin:0;max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#A9B6CE;font-size:14px;}
.footer-links a:hover{color:var(--neon);}
.footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;line-height:1.7;}
.footer-contact i{color:var(--cyan);margin-right:8px;}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#77839D;
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:44px 0 22px;}
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1050;
  display:flex;align-items:center;gap:14px;
  background:rgba(10,16,36,.95);
  border:1px solid rgba(56,232,255,.5);
  border-radius:999px;padding:10px 12px 10px 22px;
  box-shadow:0 18px 44px rgba(6,14,34,.4);
  transform:translateY(140%);opacity:0;pointer-events:none;
  transition:transform .32s ease,opacity .32s ease;
}
.float-cta.show{transform:translateY(0);opacity:1;pointer-events:auto;}
.float-cta .txt{color:#D7E4FA;font-size:14px;font-weight:600;white-space:nowrap;}
.float-cta .txt b{color:var(--neon);}
.float-cta .go{
  display:inline-flex;align-items:center;gap:7px;height:44px;padding:0 20px;
  border-radius:999px;background:var(--neon);color:#04121E;font-weight:800;font-size:14px;
}
.float-cta .go:hover{color:#04121E;filter:brightness(1.07);}
.float-cta .close{
  width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#9FB0CC;font-size:13px;display:grid;place-items:center;
}
.float-cta .close:hover{color:#fff;border-color:rgba(255,255,255,.5);}
@media (max-width:767.98px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:16px 16px 0 0;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom,0px));
    justify-content:space-between;
  }
  .float-cta .txt{font-size:13px;overflow:hidden;text-overflow:ellipsis;}
  .float-cta .close{display:none;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}