/* roulang page: index */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raised:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --promo:#FFA23A;
  --text:#EAF0FB;
  --text-sub:#9DAAC4;
  --text-weak:#6C7A96;
  --line:rgba(140,170,220,.16);
  --line-soft:rgba(140,170,220,.10);
  --success:#3FD68C;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-tag:6px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 32px rgba(44,224,199,.18);
  --gutter:24px;
  --section:88px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg);
  background-image:
    radial-gradient(circle at 6% 0%, rgba(44,224,199,.06), transparent 42%),
    radial-gradient(circle at 96% 86%, rgba(42,91,255,.09), transparent 46%),
    linear-gradient(rgba(140,170,220,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,170,220,.035) 1px, transparent 1px);
  background-size:auto,auto,40px 40px,40px 40px;
  background-attachment:fixed,fixed,scroll,scroll;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text);text-decoration:none;transition:color .25s ease,opacity .25s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);}
.section{padding:var(--section) 0;}
.section-alt{padding:var(--section) 0;background:linear-gradient(180deg,rgba(13,21,38,.72),rgba(7,12,24,.2));border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
h1{font-size:clamp(30px,4.6vw,54px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head p{color:var(--text-sub);font-size:15px;margin-top:10px;max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;font-weight:600;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7;}
.text-link{color:var(--text-sub);font-size:14px;display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid transparent;}
.text-link:hover{color:var(--accent);border-bottom-color:rgba(44,224,199,.5);}
.text-link i{transition:transform .25s ease;}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 顶部提示条 ---------- */
.promo-bar{border-bottom:1px solid rgba(255,162,58,.28);background:rgba(255,162,58,.05);}
.promo-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px;}
.promo-bar .tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;color:var(--promo);font-weight:600;}
.promo-bar .tag i{font-size:11px;}
.promo-bar p{font-size:13px;color:var(--text-sub);}
.promo-bar a{font-size:13px;color:var(--promo);}
.promo-bar a:hover{color:#ffd39a;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(7,12,24,.78);border-bottom:1px solid var(--line-soft);transition:background .25s ease,backdrop-filter .25s ease,box-shadow .25s ease;}
.site-header.is-scrolled{background:rgba(7,12,24,.9);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 10px 30px rgba(0,0,0,.4);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:76px;}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{position:relative;font-size:15px;color:var(--text-sub);padding:8px 0;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--brand));transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand .mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--accent));color:#04101F;font-size:15px;box-shadow:0 0 20px rgba(44,224,199,.28);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);color:var(--accent);align-items:center;justify-content:center;font-size:16px;background:rgba(255,255,255,.03);}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;font-size:14px;font-weight:700;color:#04101F;background:linear-gradient(135deg,#2A5BFF,#2CE0C7);transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;}
.nav-cta:hover{color:#04101F;transform:translateY(-2px);box-shadow:0 0 24px rgba(44,224,199,.45);filter:brightness(1.08);}
.mobile-drawer{display:none;border-bottom:1px solid var(--line-soft);background:rgba(9,15,29,.98);}
.mobile-drawer.open{display:block;}
.mobile-drawer a{display:block;padding:0 24px;height:52px;line-height:52px;font-size:15px;color:var(--text-sub);border-bottom:1px solid var(--line-soft);}
.mobile-drawer a:hover,.mobile-drawer a.active{color:var(--accent);}
.mobile-drawer .drawer-cta{margin:16px 24px 20px;height:46px;line-height:46px;text-align:center;border-radius:999px;color:#04101F;font-weight:700;background:linear-gradient(135deg,#2A5BFF,#2CE0C7);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-size:15px;font-weight:700;padding:14px 28px;border-radius:999px;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,filter .25s ease;}
.btn-primary{color:#04101F;background:linear-gradient(135deg,#2A5BFF,#2CE0C7);box-shadow:0 12px 28px rgba(42,91,255,.28);}
.btn-primary:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 24px rgba(44,224,199,.45);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(44,224,199,.28);}
.btn-ghost{color:var(--accent);border:1px solid rgba(44,224,199,.55);background:transparent;border-radius:12px;}
.btn-ghost:hover{color:var(--accent);background:rgba(44,224,199,.10);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{padding:72px 0 var(--section);position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;}
.hero h1{margin-bottom:20px;}
.hero h1 .hl{background:linear-gradient(135deg,#2CE0C7,#2A5BFF);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero .lede{font-size:17px;color:var(--text-sub);max-width:620px;margin-bottom:32px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px;}
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;border-top:1px solid var(--line-soft);padding-top:26px;max-width:660px;}
.metric{display:flex;flex-direction:column;gap:4px;}
.metric .label{font-size:12px;letter-spacing:.06em;color:var(--text-weak);display:flex;align-items:center;gap:7px;}
.metric .label i{color:var(--accent);font-size:12px;}
.metric .value{font-size:17px;font-weight:700;color:var(--text);}
.hero-visual{position:relative;}
.hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid rgba(44,224,199,.35);box-shadow:var(--shadow-card),var(--glow);}
.hero-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,24,.05),rgba(7,12,24,.55));}
.float-badge{position:absolute;z-index:2;display:inline-flex;align-items:center;gap:9px;padding:10px 16px;border-radius:12px;font-size:13px;color:var(--text);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 12px 30px rgba(0,0,0,.4);}
.float-badge i{color:var(--accent);}
.float-badge.one{top:22px;left:-14px;}
.float-badge.two{bottom:24px;right:-14px;}
.float-badge.two i{color:var(--promo);}

/* ---------- 支持阶梯 ---------- */
.ladder{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding-top:16px;}
.ladder::before{content:"";position:absolute;top:44px;left:12%;right:12%;height:1px;border-top:1px dashed rgba(140,170,220,.25);}
.ladder-item{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px 24px;display:flex;flex-direction:column;gap:14px;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.ladder-item:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.4);box-shadow:var(--shadow-card);}
.ladder-item:nth-child(2){margin-top:34px;}
.ladder-item:nth-child(3){margin-top:68px;}
.ladder-node{position:absolute;top:-16px;left:24px;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:600;color:#04101F;background:var(--accent);box-shadow:0 0 18px rgba(44,224,199,.5);}
.ladder-item:nth-child(2) .ladder-node{background:linear-gradient(135deg,#2A5BFF,#2CE0C7);color:#04101F;}
.ladder-item:nth-child(3) .ladder-node{background:var(--promo);box-shadow:0 0 18px rgba(255,162,58,.45);}
.ladder-item h3{margin-top:6px;}
.ladder-item .desc{color:var(--text-sub);font-size:14px;line-height:1.9;}
.ladder-facts{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line-soft);padding-top:14px;margin-top:auto;}
.ladder-facts span{font-size:13px;color:var(--text-weak);display:flex;align-items:center;gap:9px;}
.ladder-facts span b{color:var(--text);font-weight:600;}
.ladder-facts span i{color:var(--accent);font-size:12px;}

/* ---------- 方案对比 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 26px;display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow-card);}
.plan-card.is-featured{position:relative;transform:translateY(-12px);padding:42px 26px;background:rgba(255,255,255,.05);border:1px solid var(--accent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-card),var(--glow);}
.plan-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);font-size:12px;font-weight:700;letter-spacing:.08em;color:#04101F;background:linear-gradient(135deg,#2A5BFF,#2CE0C7);padding:6px 16px;border-radius:999px;white-space:nowrap;}
.plan-card h3{font-size:19px;}
.plan-price{display:flex;align-items:baseline;gap:8px;color:var(--text);}
.plan-price b{font-size:26px;font-weight:700;color:var(--promo);}
.plan-price span{font-size:13px;color:var(--text-weak);}
.plan-list{display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line-soft);padding-top:18px;margin-bottom:6px;}
.plan-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-sub);line-height:1.7;}
.plan-list li i{color:var(--accent);font-size:13px;margin-top:5px;}
.plan-card:not(.is-featured) .plan-list li i{color:var(--text-weak);}
.plan-card .btn{margin-top:auto;}

/* ---------- 倒计时条 ---------- */
.countdown-bar{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid rgba(44,224,199,.35);background:#0A1120 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;box-shadow:var(--shadow-card),var(--glow);}
.countdown-bar .overlay{position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,12,24,.92),rgba(7,12,24,.6));}
.countdown-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:38px 40px;flex-wrap:wrap;}
.countdown-inner h2{font-size:clamp(20px,2.2vw,28px);margin-bottom:8px;}
.countdown-inner p{color:var(--text-sub);font-size:14px;max-width:520px;}
.countdown{display:flex;align-items:center;gap:10px;}
.cd-cell{width:56px;height:56px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;}
.cd-cell b{font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1;}
.cd-cell span{font-size:12px;letter-spacing:.04em;color:var(--text-weak);}
.cd-sep{color:var(--accent);font-weight:700;font-size:20px;}

/* ---------- 资讯列表 ---------- */
.post-grid{margin-top:0;}
.post-card{height:100%;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.post-card:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.4);box-shadow:var(--shadow-card);}
.post-thumb{position:relative;display:block;overflow:hidden;background:var(--panel);}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-thumb .badge{position:absolute;left:14px;top:14px;}
.post-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body h3 a{color:var(--text);}
.post-body h3 a:hover{color:var(--accent);}
.post-summary{font-size:14px;color:var(--text-sub);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line-soft);padding-top:14px;margin-top:auto;}
.post-time{font-size:13px;color:var(--text-weak);}
.post-arrow{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);color:var(--text-sub);font-size:13px;transition:transform .25s ease,color .25s ease,border-color .25s ease;}
.post-card:hover .post-arrow{transform:translateX(4px);color:var(--accent);border-color:rgba(44,224,199,.5);}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.04em;padding:5px 12px;border-radius:var(--radius-tag);}
.badge-soft{color:var(--accent);background:rgba(44,224,199,.08);border:1px solid rgba(44,224,199,.35);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);}
.badge-promo{color:var(--promo);background:rgba(255,162,58,.08);border:1px solid rgba(255,162,58,.35);}
.empty-state{text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);background:rgba(255,255,255,.02);}
.empty-state i{font-size:34px;color:rgba(44,224,199,.4);margin-bottom:16px;display:block;}
.empty-state p{color:var(--text-sub);margin-bottom:20px;}

/* ---------- 分类瓷片 ---------- */
.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.tile{position:relative;display:flex;flex-direction:column;gap:12px;padding:26px 22px;border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.tile:hover{transform:translateY(-4px);border-color:rgba(44,224,199,.5);box-shadow:var(--shadow-card);}
.tile .ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:var(--accent);background:rgba(44,224,199,.08);border:1px solid rgba(44,224,199,.28);font-size:17px;}
.tile h3{font-size:17px;}
.tile p{font-size:14px;color:var(--text-sub);line-height:1.75;}
.tile .go{font-size:13px;color:var(--text-weak);display:inline-flex;align-items:center;gap:8px;margin-top:auto;}
.tile:hover .go{color:var(--accent);}
.tile:hover .go i{transform:translateX(4px);}
.tile .go i{transition:transform .25s ease;}

/* ---------- 咨询表单 ---------- */
.consult-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start;}
.form-card{padding:34px 30px;border-radius:var(--radius-card);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-card);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;color:var(--text-sub);margin-bottom:8px;}
.field label .req{color:var(--promo);margin-left:4px;}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border-radius:10px;background:#0A1120;border:1px solid var(--line);color:var(--text);transition:border-color .25s ease,box-shadow .25s ease;}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#9DAAC4 50%),linear-gradient(135deg,#9DAAC4 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 16px rgba(44,224,199,.25);}
.field .hint{font-size:12px;color:var(--text-weak);margin-top:8px;}
.form-note{font-size:12px;color:var(--text-weak);margin-top:14px;line-height:1.8;}
.form-feedback{margin-top:16px;font-size:14px;color:var(--success);display:none;}
.form-feedback.show{display:block;}
.guard-list{display:flex;flex-direction:column;gap:18px;}
.guard-item{display:flex;gap:14px;padding:20px 22px;border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);}
.guard-item i{color:var(--accent);font-size:16px;margin-top:5px;}
.guard-item h3{font-size:16px;margin-bottom:6px;}
.guard-item p{font-size:14px;color:var(--text-sub);line-height:1.8;}

/* ---------- 评价 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.voice{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;display:flex;flex-direction:column;gap:14px;}
.voice .stars{color:var(--promo);font-size:13px;letter-spacing:.2em;}
.voice p{font-size:14px;color:var(--text-sub);line-height:1.9;}
.voice .who{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line-soft);padding-top:14px;margin-top:auto;}
.voice .who .avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;color:#04101F;background:linear-gradient(135deg,#2A5BFF,#2CE0C7);}
.voice .who span{font-size:13px;color:var(--text-weak);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{border-radius:12px;background:var(--panel);border:1px solid var(--line);overflow:hidden;transition:border-color .25s ease;}
.faq-item[open]{border-color:var(--accent);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:20px 22px;font-size:16px;font-weight:600;color:var(--text);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .qi{color:var(--accent);font-size:14px;flex:0 0 auto;}
.faq-item summary .plus{margin-left:auto;color:var(--text-weak);transition:transform .25s ease,color .25s ease;flex:0 0 auto;}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--accent);}
.faq-item .answer{padding:0 22px 22px 58px;font-size:15px;color:var(--text-sub);line-height:1.9;}

/* ---------- CTA 条 ---------- */
.cta-band{border-radius:var(--radius-card);border:1px solid rgba(44,224,199,.32);background:linear-gradient(120deg,rgba(42,91,255,.16),rgba(44,224,199,.10));padding:44px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(20px,2.2vw,30px);margin-bottom:10px;}
.cta-band p{color:var(--text-sub);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:#05090F;border-top:1px solid var(--line-soft);padding-top:64px;margin-top:var(--section);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px;}
.footer-brand .brand{margin-bottom:16px;font-size:16px;}
.footer-brand p{font-size:13px;color:var(--text-weak);line-height:1.9;max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:13px;color:var(--text-sub);}
.footer-col a:hover{color:var(--accent);}
.footer-col li{font-size:13px;color:var(--text-sub);display:flex;align-items:center;gap:9px;}
.footer-col li i{color:var(--accent);font-size:12px;}
.footer-bottom{border-top:1px solid var(--line-soft);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.footer-bottom p{font-size:12px;color:var(--text-weak);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .tile-grid{gap:18px;}
}
@media (max-width:1023px){
  :root{--section:72px;}
  .nav-side{gap:18px;}
  .nav-link{font-size:14px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{max-width:640px;}
  .float-badge.one{left:10px;}
  .float-badge.two{right:10px;}
  .ladder{grid-template-columns:1fr;gap:34px;}
  .ladder::before{display:none;}
  .ladder-item:nth-child(2),.ladder-item:nth-child(3){margin-top:0;}
  .plan-grid{grid-template-columns:1fr;gap:34px;}
  .plan-card.is-featured{transform:none;padding:36px 26px;}
  .consult-grid{grid-template-columns:1fr;gap:32px;}
  .tile-grid{grid-template-columns:repeat(2,1fr);}
  .voice-grid{grid-template-columns:1fr;gap:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:900px){
  .nav-wrap{grid-template-columns:auto 1fr auto;}
  .nav-side.left,.nav-side.right{display:none;}
  .brand{justify-self:center;}
  .nav-toggle{display:inline-flex;}
}
@media (max-width:767px){
  :root{--section:56px;--gutter:18px;}
  .promo-bar .container{justify-content:flex-start;}
  .hero{padding-top:52px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:16px;}
  .countdown-inner{padding:28px 22px;gap:22px;}
  .countdown-inner .cd-cell{width:50px;height:50px;}
  .cta-band{padding:32px 22px;}
  .form-card{padding:26px 20px;}
  .tile-grid{grid-template-columns:1fr;}
  .post-grid .cell{width:calc(100% - 24px);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-item .answer{padding-left:22px;}
}
@media (max-width:520px){
  h1{font-size:26px;}
  h2{font-size:21px;}
  .hero .lede{font-size:15px;}
  .btn{padding:12px 22px;font-size:14px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{grid-template-columns:1fr;}
  .cd-cell{width:46px;height:46px;}
  .cd-cell b{font-size:20px;}
  .float-badge{font-size:12px;padding:8px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}
/* Foundation 栅格微调，统一到 24px 间隙 */
.grid-x{display:flex;flex-flow:row wrap;}
.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-margin-x>.cell{margin-left:12px;margin-right:12px;min-width:0;}
.grid-margin-x>.small-12{width:calc(100% - 24px);}
.grid-margin-x>.medium-6{width:calc(100% - 24px);}
.grid-margin-x>.medium-4{width:calc(100% - 24px);}
.grid-margin-x>.large-4{width:calc(100% - 24px);}
.grid-margin-x>.large-3{width:calc(100% - 24px);}
@media (min-width:768px){
  .grid-margin-x>.medium-6{width:calc(50% - 24px);}
  .grid-margin-x>.medium-4{width:calc(33.3333% - 24px);}
}
@media (min-width:1024px){
  .grid-margin-x>.large-4{width:calc(33.3333% - 24px);}
  .grid-margin-x>.large-3{width:calc(25% - 24px);}
}
.grid-margin-y{margin-top:-12px;margin-bottom:-12px;}
.grid-margin-y>.cell{margin-top:12px;margin-bottom:12px;}

/* roulang page: article */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raise:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --accent-warm:#FFA23A;
  --text:#EAF0FB;
  --text-2:#9DAAC4;
  --text-3:#6C7A96;
  --line:rgba(140,170,220,.16);
  --line-soft:rgba(140,170,220,.10);
  --ok:#3FD68C;
  --warn:#FF6B6B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-tag:6px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-glow:0 0 32px rgba(44,224,199,.18);
  --gap:24px;
  --section:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
  background-image:
    radial-gradient(760px 520px at 6% -6%, rgba(44,224,199,.06), transparent 62%),
    radial-gradient(820px 620px at 100% 8%, rgba(42,91,255,.08), transparent 64%),
    linear-gradient(rgba(140,170,220,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,170,220,.04) 1px, transparent 1px);
  background-size:auto,auto,56px 56px,56px 56px;
  background-attachment:fixed;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--text);text-decoration:none;transition:color .25s ease, border-color .25s ease, background-color .25s ease;}
a:hover,a:focus{color:var(--accent);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--section) 0;}
.section-tight{padding:56px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(44,224,199,.35);
  background:rgba(44,224,199,.08);
  border-radius:var(--radius-tag);
  padding:5px 12px;
}
.eyebrow.warm{color:var(--accent-warm);border-color:rgba(255,162,58,.38);background:rgba(255,162,58,.08);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3;}
.section-head p{margin:10px 0 0;color:var(--text-2);font-size:15px;max-width:640px;}
.more-link{font-size:14px;color:var(--text-2);white-space:nowrap;}
.more-link i{margin-left:6px;transition:transform .25s ease;}
.more-link:hover i{transform:translateX(4px);}
.divider{height:1px;background:var(--line-soft);border:0;margin:0;}

/* 顶部提示条 */
.topbar{
  border-bottom:1px solid rgba(255,162,58,.28);
  background:linear-gradient(90deg,rgba(255,162,58,.10),rgba(255,162,58,.02));
}
.topbar-inner{
  display:flex;align-items:center;gap:14px;
  min-height:38px;font-size:13px;color:var(--text-2);
}
.topbar-tag{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent-warm);font-weight:700;font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(255,162,58,.40);border-radius:var(--radius-tag);
  padding:2px 10px;flex:0 0 auto;
}
.topbar-text{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-link{font-size:13px;color:var(--accent-warm);flex:0 0 auto;}
.topbar-link:hover{color:#ffbe6e;}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.86);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,24,.72);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line-soft);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:72px;position:relative;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap;
}
.brand .mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;font-size:15px;
  box-shadow:0 0 20px rgba(44,224,199,.28);
}
.brand:hover{color:var(--text);}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-side.right{gap:22px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover,.nav-link:focus{color:var(--text);}
.nav-link:hover::after,.nav-link:focus::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;border-radius:999px;
  padding:12px 26px;transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,filter .25s ease;
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;box-shadow:0 0 18px rgba(44,224,199,.28);
}
.btn-glow:hover,.btn-glow:focus{color:#04101F;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 24px rgba(44,224,199,.45);}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 12px rgba(44,224,199,.30);}
.btn-ghost{
  background:transparent;color:var(--text);border:1px solid var(--accent);
}
.btn-ghost:hover,.btn-ghost:focus{color:var(--text);background:rgba(44,224,199,.10);transform:translateY(-2px);}
.btn-soft{
  background:var(--raise);color:var(--text);border:1px solid var(--line);border-radius:12px;
  padding:11px 20px;font-size:14px;font-weight:600;
}
.btn-soft:hover,.btn-soft:focus{color:var(--accent);border-color:rgba(44,224,199,.45);}
.btn-sm{padding:9px 20px;font-size:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--panel);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--accent);transition:transform .25s ease,opacity .25s ease;}
.mobile-drawer{
  display:none;border-top:1px solid var(--line-soft);
  background:rgba(10,17,32,.98);
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer ul{padding:8px 24px 20px;}
.mobile-drawer li{border-bottom:1px solid var(--line-soft);}
.mobile-drawer a{display:block;line-height:52px;font-size:15px;color:var(--text-2);}
.mobile-drawer a:hover{color:var(--accent);}
.mobile-drawer .drawer-cta{padding:16px 24px 26px;}
.mobile-drawer .btn{width:100%;}

/* 面包屑 */
.crumb{padding:22px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb .sep{color:var(--accent);opacity:.7;}
.crumb a{color:var(--text-2);font-size:13px;}
.crumb a:hover{color:var(--accent);}
.crumb .current{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章布局 */
.article-wrap{padding:28px 0 0;}
.article-layout{margin-top:0;}
.article-main{min-width:0;}
.article-side{min-width:0;}
.article-head{
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(18,28,51,.9),rgba(13,21,38,.92));
  border-radius:var(--radius-card);
  padding:32px 32px 26px;
  box-shadow:var(--shadow-card);
}
.article-head h1{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.28;margin:14px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:13px;color:var(--text-3);
}
.article-meta .dot{color:rgba(44,224,199,.7);}
.article-meta .chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-tag);font-size:12px;
  color:var(--accent);border:1px solid rgba(44,224,199,.35);background:rgba(44,224,199,.08);
}
.article-body-card{
  margin-top:24px;
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:var(--radius-card);
  padding:34px 34px 30px;
  box-shadow:var(--shadow-card);
}
.article-body{max-width:760px;}
.article-body p{font-size:16px;line-height:1.95;color:#D7E0F0;margin:0 0 20px;}
.article-body h2{
  font-size:22px;line-height:1.45;margin:38px 0 16px;
  padding-left:14px;border-left:4px solid var(--accent);border-radius:2px;
}
.article-body h3{font-size:18px;line-height:1.5;margin:28px 0 12px;color:#F2F6FF;}
.article-body h4{font-size:16px;margin:22px 0 10px;color:var(--text-2);}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:18px;line-height:1.9;color:#D7E0F0;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.82em;width:7px;height:7px;border-radius:50%;
  background:var(--accent);opacity:.85;
}
.article-body ol{list-style:decimal;}
.article-body ol li{line-height:1.9;color:#D7E0F0;margin-bottom:8px;padding-left:4px;}
.article-body ol li::marker{color:var(--accent);font-weight:700;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  border-left:4px solid var(--accent);
  background:rgba(44,224,199,.06);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:#C9D5E8;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;margin:24px auto;border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;
  border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line-soft);text-align:left;line-height:1.7;
}
.article-body th{background:rgba(42,91,255,.14);color:#EAF0FB;font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;height:1px;background:var(--line-soft);margin:32px 0;}
.article-body code{
  background:rgba(44,224,199,.10);color:var(--accent);padding:2px 6px;border-radius:6px;font-size:14px;
}

/* 空态 */
.empty-state{
  text-align:center;padding:60px 20px;
}
.empty-state i{font-size:40px;color:rgba(44,224,199,.4);}
.empty-state h2{font-size:20px;margin:16px 0 8px;}
.empty-state p{color:var(--text-2);font-size:14px;margin-bottom:22px;}

/* 标签与文末 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line-soft);}
.tag{
  font-size:12px;letter-spacing:.03em;color:var(--accent);
  border:1px solid rgba(44,224,199,.32);background:rgba(44,224,199,.08);
  border-radius:var(--radius-tag);padding:5px 12px;
}
.tag:hover{color:#04101F;background:var(--accent);border-color:var(--accent);}
.nav-posts{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);margin-top:24px;}
.post-nav-card{
  border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-card);transition:transform .25s ease,border-color .25s ease;
}
.post-nav-card:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.4);}
.post-nav-card span{display:block;font-size:12px;letter-spacing:.04em;color:var(--text-3);margin-bottom:8px;}
.post-nav-card strong{display:block;font-size:15px;font-weight:600;line-height:1.6;color:var(--text);}
.post-nav-card:hover strong{color:var(--accent);}

/* 侧栏 */
.side-box{
  border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);margin-bottom:24px;
}
.side-box h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-box h3 i{color:var(--accent);font-size:14px;}
.side-list li{padding:11px 0;border-bottom:1px solid var(--line-soft);}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{font-size:14px;color:var(--text-2);display:flex;gap:10px;line-height:1.7;}
.side-list a i{color:var(--accent);font-size:12px;margin-top:7px;}
.side-list a:hover{color:var(--accent);}
.side-note{font-size:13px;color:var(--text-3);line-height:1.8;}
.side-sticky{position:sticky;top:96px;}

/* 推荐卡片 */
.cards-3 .cell{margin-bottom:var(--gap);}
.rec-card{
  height:100%;display:flex;flex-direction:column;
  border:1px solid var(--line);background:var(--panel);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.rec-card:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.42);box-shadow:0 18px 40px rgba(0,0,0,.5),var(--shadow-glow);}
.rec-thumb{position:relative;aspect-ratio:16/10;background:var(--raise);overflow:hidden;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-thumb .badge{position:absolute;left:12px;top:12px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.03em;border-radius:var(--radius-tag);
  padding:4px 10px;color:var(--accent);
  border:1px solid rgba(44,224,199,.35);background:rgba(7,12,24,.72);backdrop-filter:blur(6px);
}
.badge.warm{color:var(--accent-warm);border-color:rgba(255,162,58,.4);}
.rec-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
.rec-body h3{font-size:17px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-body p{font-size:13px;color:var(--text-2);line-height:1.75;margin:10px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}
.rec-foot i{transition:transform .25s ease,color .25s ease;}
.rec-card:hover .rec-foot i{transform:translateX(4px);color:var(--accent);}

/* CTA 条 */
.cta-band{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(44,224,199,.28);
  background:linear-gradient(120deg,rgba(20,42,110,.85),rgba(9,16,30,.92));
  padding:42px 40px;box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.14;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(20px,2.4vw,28px);line-height:1.35;}
.cta-inner p{margin:10px 0 0;color:#C6D2E6;font-size:14px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 表单 */
.form-glass{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);
}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:10px;padding:0 14px;
  background:#0A1120;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 16px rgba(44,224,199,.25);
}
.form-tip{font-size:12px;color:var(--text-3);margin-top:12px;line-height:1.7;}

/* 页脚 */
.site-footer{background:#05090F;border-top:1px solid var(--line-soft);margin-top:88px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13px;color:var(--text-3);line-height:1.9;max-width:340px;}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:11px;font-size:13px;color:var(--text-3);display:flex;gap:8px;align-items:flex-start;line-height:1.7;}
.footer-col ul li i{color:var(--accent);font-size:12px;margin-top:6px;}
.footer-col ul li a{font-size:13px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding:20px 0 26px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);margin:0;}

@media (max-width:1199px){
  .header-inner{gap:16px;}
  .nav-side{gap:18px;}
  .nav-link{font-size:14px;}
}
@media (max-width:1023px){
  :root{--section:64px;}
  .nav-side{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);font-size:15px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--section:56px;--gap:18px;}
  .container{padding:0 18px;}
  .topbar-inner{flex-wrap:wrap;padding:8px 0;gap:8px;}
  .topbar-text{white-space:normal;font-size:12px;flex:1 1 100%;order:3;}
  .article-head{padding:24px 20px 20px;}
  .article-body-card{padding:24px 20px 22px;}
  .article-body{max-width:100%;}
  .article-body h2{font-size:20px;}
  .article-body p{font-size:15.5px;}
  .nav-posts{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .side-sticky{position:static;}
  .site-footer{padding-top:48px;margin-top:56px;}
}
@media (max-width:520px){
  .brand{font-size:13.5px;}
  .brand .mark{width:30px;height:30px;font-size:13px;}
  .article-head h1{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raised:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --promo:#FFA23A;
  --text:#EAF0FB;
  --text-2:#9DAAC4;
  --text-3:#6C7A96;
  --line:rgba(140,170,220,.16);
  --line-soft:rgba(140,170,220,.10);
  --ok:#3FD68C;
  --warn:#FF6B6B;
  --r-card:16px;
  --r-img:12px;
  --r-tag:6px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 32px rgba(44,224,199,.18);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(44,224,199,.06), transparent 60%),
    radial-gradient(1000px 620px at 102% 108%, rgba(42,91,255,.08), transparent 62%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.04;
  background-image:
    linear-gradient(rgba(160,190,230,.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(160,190,230,.55) 1px, transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;background:transparent;transition:color .25s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:.01em}
h1{font-size:clamp(30px,4.6vw,54px);line-height:1.2}
h2{font-size:clamp(22px,2.6vw,34px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
h4{font-size:16px;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:88px 0;position:relative;z-index:1}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head .lead{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;border:1px solid rgba(44,224,199,.35);background:rgba(44,224,199,.08);border-radius:var(--r-tag);padding:4px 12px;margin-bottom:16px}
.eyebrow i{font-size:11px}

/* 顶部提示条 */
.topbar{
  position:relative;
  z-index:70;
  border-bottom:1px solid rgba(255,162,58,.28);
  background:linear-gradient(90deg, rgba(255,162,58,.12), rgba(255,162,58,.02) 62%, rgba(44,224,199,.05));
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding:4px 0;font-size:13px;color:var(--text-2);flex-wrap:wrap}
.topbar .tag{color:var(--promo);border:1px solid rgba(255,162,58,.45);border-radius:var(--r-tag);padding:1px 10px;font-size:12px;letter-spacing:.06em;white-space:nowrap}
.topbar .topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar a{font-size:13px;color:var(--text-2)}
.topbar a:hover{color:var(--accent)}
.topbar a i{margin-left:6px;font-size:11px}

/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,24,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,24,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line-soft);
}
.nav-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  min-height:78px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link{
  font-size:15px;
  color:var(--text-2);
  position:relative;
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:17px;
  color:var(--text);
  white-space:nowrap;
}
.brand:hover{color:var(--text)}
.brand .mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;
  font-size:15px;
  box-shadow:0 0 20px rgba(44,224,199,.28);
  flex:none;
}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;
  background:linear-gradient(135deg,#2A5BFF,#2CE0C7);
  color:#04101F!important;
  font-weight:700;
  border:0;
  padding:13px 26px;
  font-size:15px;
  transition:transform .25s ease, box-shadow .25s ease, filter .25s ease;
  box-shadow:0 10px 26px rgba(42,91,255,.28);
}
.btn-glow:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 24px rgba(44,224,199,.45);color:#04101F!important}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 12px rgba(44,224,199,.28)}
.btn-glow.btn-sm{padding:9px 20px;font-size:14px}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;
  border:1px solid rgba(44,224,199,.55);
  background:transparent;
  color:var(--text)!important;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  transition:background .25s ease, border-color .25s ease, transform .25s ease;
}
.btn-line:hover{background:rgba(44,224,199,.10);border-color:var(--accent);transform:translateY(-2px);color:var(--text)!important}
.btn-line:active{transform:translateY(0)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  flex-direction:column;
  gap:5px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:12px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--accent)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:rgba(7,12,24,.97);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  padding:8px 0 20px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;
  padding:0 24px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.mobile-drawer a.active,.mobile-drawer a:hover{color:var(--accent)}
.mobile-drawer .drawer-cta{margin:16px 24px 0;border-bottom:0}

/* 分类页首屏 */
.page-hero{
  position:relative;
  padding:48px 0 72px;
  border-bottom:1px solid var(--line-soft);
  background-image:
    linear-gradient(rgba(7,12,24,.84), rgba(7,12,24,.94)),
    url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:auto -10% -60% -10%;
  height:220px;
  background:radial-gradient(closest-side, rgba(44,224,199,.14), transparent 70%);
  pointer-events:none;
}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:26px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--accent);font-size:11px}
.breadcrumb .current{color:var(--text-2)}
.page-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.page-hero h1{margin-bottom:20px}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.hero-lead{color:var(--text-2);font-size:16px;line-height:1.95;max-width:640px}
.hero-actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap}
.metrics{display:flex;gap:32px;margin-top:38px;flex-wrap:wrap}
.metric{display:flex;align-items:center;gap:12px}
.metric .m-icon{
  width:38px;height:38px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  border:1px solid rgba(44,224,199,.35);
  background:rgba(44,224,199,.08);
  color:var(--accent);
  font-size:15px;
}
.metric .m-text{display:flex;flex-direction:column;line-height:1.35}
.metric .m-text b{font-size:16px;font-weight:700;color:var(--text)}
.metric .m-text span{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.hero-visual{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid rgba(44,224,199,.32);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:14px;
  box-shadow:var(--shadow), var(--glow);
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  background:var(--panel);
}
.float-badge{
  position:absolute;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  background:rgba(13,21,38,.92);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  white-space:nowrap;
}
.float-badge.b1{top:26px;left:-18px;color:var(--accent);border-color:rgba(44,224,199,.4)}
.float-badge.b2{bottom:26px;right:-14px;color:var(--promo);border-color:rgba(255,162,58,.4)}

/* 图文段落流 */
.flow-wrap{display:flex;flex-direction:column;gap:8px}
.flow-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:36px 0;
  border-bottom:1px dashed var(--line-soft);
}
.flow-row:last-child{border-bottom:0}
.flow-media{position:relative}
.flow-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
}
.flow-media .num{
  position:absolute;
  top:-14px;left:-14px;
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;
  font-weight:700;
  font-size:16px;
  box-shadow:0 0 22px rgba(44,224,199,.32);
}
.flow-row.reverse .flow-media{order:2}
.flow-row.reverse .flow-body{order:1}
.flow-body .flow-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;
  color:var(--accent);
  border:1px solid rgba(44,224,199,.32);
  background:rgba(44,224,199,.08);
  border-radius:var(--r-tag);
  padding:3px 10px;
  margin-bottom:14px;
}
.flow-body h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:14px}
.flow-body p{color:var(--text-2);font-size:15.5px;line-height:1.95}
.flow-body p + p{margin-top:14px}

/* 检查清单 */
.check-panel{
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:var(--r-card);
  padding:34px 36px;
  box-shadow:var(--shadow);
}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:16px 32px;margin-top:22px}
.check-list li{display:flex;align-items:flex-start;gap:12px;color:var(--text-2);font-size:15px;line-height:1.8}
.check-list li i{color:var(--accent);margin-top:6px;font-size:13px;flex:none}
.divider-line{height:1px;background:linear-gradient(90deg, rgba(44,224,199,.55), rgba(44,224,199,0));margin:56px 0 0}

/* 场景卡片 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:var(--r-card);
  padding:30px 28px;
  box-shadow:var(--shadow);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.45);box-shadow:var(--shadow), var(--glow)}
.card .c-icon{
  width:46px;height:46px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(44,224,199,.08);
  border:1px solid rgba(44,224,199,.30);
  color:var(--accent);
  font-size:18px;
  margin-bottom:20px;
}
.card h3{margin-bottom:12px;font-size:19px}
.card p{color:var(--text-2);font-size:15px;line-height:1.9}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .25s ease, background .25s ease;
}
.faq-item[open]{border-color:rgba(44,224,199,.55);background:var(--raised)}
.faq-item summary{
  display:flex;align-items:center;gap:14px;
  padding:20px 24px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-item summary .q-icon{
  width:28px;height:28px;flex:none;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;
  border:1px solid rgba(44,224,199,.32);
  background:rgba(44,224,199,.08);
  color:var(--accent);
  font-size:13px;
  font-weight:700;
}
.faq-item summary .q-text{flex:1;min-width:0}
.faq-item summary .faq-arrow{color:var(--text-3);font-size:13px;transition:transform .25s ease, color .25s ease}
.faq-item[open] summary .faq-arrow{transform:rotate(45deg);color:var(--accent)}
.faq-answer{padding:0 24px 22px 66px;color:var(--text-2);font-size:15px;line-height:1.9}
.faq-answer p + p{margin-top:12px}

/* 分类互链 */
.cross-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cross-card{
  display:flex;flex-direction:column;gap:10px;
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:var(--r-card);
  padding:24px 22px;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.cross-card:hover{transform:translateY(-2px);border-color:rgba(44,224,199,.5);box-shadow:var(--shadow), var(--glow)}
.cross-card .cc-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.cross-card .cc-top i{color:var(--accent);font-size:16px}
.cross-card h3{font-size:17px}
.cross-card p{font-size:13.5px;color:var(--text-3);line-height:1.75}
.cross-card .cc-go{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;margin-top:4px}
.cross-card:hover .cc-go{color:var(--accent)}
.cross-card.is-current{border-color:rgba(44,224,199,.5);background:var(--raised)}
.cross-card.is-current .cc-go{color:var(--accent)}

/* CTA 条 */
.cta-band{
  position:relative;
  border-radius:var(--r-card);
  border:1px solid rgba(44,224,199,.35);
  background-image:
    linear-gradient(120deg, rgba(7,12,24,.94), rgba(7,12,24,.78)),
    url(/assets/images/backpic/back-3.webp);
  background-size:cover;
  background-position:center;
  padding:52px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:auto -6% -70% -6%;
  height:200px;
  background:radial-gradient(closest-side, rgba(44,224,199,.18), transparent 70%);
  pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:1;max-width:660px}
.cta-band h2{margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.cta-actions{position:relative;z-index:1;display:flex;gap:16px;flex-wrap:wrap}

/* 页脚 */
.site-footer{
  background:#05090F;
  border-top:1px solid var(--line-soft);
  padding:72px 0 0;
  margin-top:88px;
  position:relative;
  z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{font-size:17px;margin-bottom:18px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.9;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li{font-size:14px;color:var(--text-3);display:flex;align-items:flex-start;gap:10px;line-height:1.7}
.footer-col li i{color:var(--accent);margin-top:5px;font-size:12px;flex:none}
.footer-col a{color:var(--text-3);font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid var(--line-soft);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);line-height:1.8}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 22px}
  .nav-side{gap:20px}
  .page-hero-grid{gap:40px}
  .cross-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .nav-side{display:none}
  .nav-inner{grid-template-columns:auto 1fr auto;min-height:68px}
  .nav-toggle{display:inline-flex;order:-1;justify-self:start}
  .brand{justify-self:center;font-size:16px}
  .nav-inner::after{content:"";width:44px;height:1px}
  .page-hero{padding:36px 0 56px}
  .page-hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:620px}
  .float-badge.b1{left:10px}
  .float-badge.b2{right:10px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.8}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .topbar-inner{min-height:0;padding:8px 0}
  .topbar .topbar-left{gap:8px}
  .page-hero{padding:28px 0 48px}
  .hero-actions{gap:12px}
  .hero-actions .btn-glow,.hero-actions .btn-line{width:100%}
  .metrics{gap:20px;margin-top:28px}
  .metric{min-width:140px}
  .flow-row{grid-template-columns:1fr;gap:26px;padding:26px 0}
  .flow-row.reverse .flow-media{order:0}
  .flow-row.reverse .flow-body{order:0}
  .check-panel{padding:24px 20px}
  .check-list{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .cross-grid{grid-template-columns:1fr}
  .cta-band{padding:34px 22px;flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn-glow,.cta-actions .btn-line{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .faq-answer{padding:0 20px 20px 20px}
}
@media (max-width:480px){
  h1{font-size:26px}
  .brand{font-size:14.5px}
  .brand .mark{width:30px;height:30px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .metric{min-width:0;width:100%}
  .hero-visual{padding:10px}
  .float-badge{font-size:11px;padding:6px 10px}
  .float-badge.b1{top:12px;left:8px}
  .float-badge.b2{bottom:12px;right:8px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .card:hover,.cross-card:hover,.btn-glow:hover,.btn-line:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raised:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --promo:#FFA23A;
  --text:#EAF0FB;
  --text-2:#9DAAC4;
  --text-3:#6C7A96;
  --line:rgba(140,170,220,.16);
  --divider:rgba(140,170,220,.10);
  --success:#3FD68C;
  --danger:#FF6B6B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-tag:6px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-glow:0 0 32px rgba(44,224,199,.18);
  --space:88px;
  --container:1200px;
  --ease:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 480px at 8% 4%, rgba(44,224,199,.06), transparent 70%),
    radial-gradient(760px 520px at 96% 88%, rgba(42,91,255,.08), transparent 72%),
    repeating-linear-gradient(0deg, rgba(140,170,220,.04) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(90deg, rgba(140,170,220,.04) 0 1px, transparent 1px 76px);
}
body.menu-open{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--text);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:var(--space) 0;position:relative;z-index:1}
.section-sm{padding:56px 0;position:relative;z-index:1}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,34px)}
.section-sub{color:var(--text-2);font-size:15px;max-width:720px;margin-top:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(44,224,199,.35);background:rgba(44,224,199,.08);
  padding:5px 12px;border-radius:var(--radius-pill);margin-bottom:16px;
}
.link-more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.link-more:hover{color:var(--accent)}
.link-more i{font-size:12px;transition:transform var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* 顶部提示条 */
.topbar{
  position:relative;z-index:60;
  background:linear-gradient(90deg, rgba(255,162,58,.10), rgba(255,162,58,.02));
  border-bottom:1px solid rgba(255,162,58,.28);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:38px;font-size:13px;
}
.topbar-tag{color:var(--promo);letter-spacing:.04em;display:inline-flex;align-items:center;gap:8px;font-weight:600}
.topbar-link{color:var(--text-2);display:inline-flex;align-items:center;gap:8px;font-size:13px}
.topbar-link:hover{color:var(--promo)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:55;
  background:rgba(7,12,24,.86);
  border-bottom:1px solid var(--divider);
  transition:background var(--ease),backdrop-filter var(--ease),border-color var(--ease);
}
.site-header.scrolled{
  background:rgba(7,12,24,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:24px;min-height:78px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.left{justify-content:flex-start}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;color:var(--text);white-space:nowrap;
}
.brand .mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;font-size:15px;box-shadow:0 0 18px rgba(44,224,199,.28);
}
.brand:hover{color:var(--text)}
.header-cta{display:flex;justify-content:flex-end}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
  color:var(--accent);font-size:17px;cursor:pointer;
}
.mobile-drawer{
  display:none;border-top:1px solid var(--divider);
  background:rgba(9,14,28,.98);
  backdrop-filter:blur(12px);
  max-height:0;overflow:hidden;transition:max-height var(--ease);
}
.mobile-drawer .drawer-inner{padding:8px 24px 22px}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--divider);
}
.mobile-drawer a:hover,.mobile-drawer a.active{color:var(--accent)}
.mobile-drawer .drawer-cta{margin-top:18px;border-bottom:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:14px 26px;border-radius:var(--radius-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),filter var(--ease);
}
.btn-glow{
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;
  box-shadow:0 10px 26px rgba(42,91,255,.28);
}
.btn-glow:hover{
  color:#04101F;transform:translateY(-2px);filter:brightness(1.08);
  box-shadow:0 0 24px rgba(44,224,199,.45),0 12px 28px rgba(42,91,255,.30);
}
.btn-glow:active{transform:translateY(0);box-shadow:0 0 12px rgba(44,224,199,.30)}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(44,224,199,.55);border-radius:12px;
}
.btn-ghost:hover{background:rgba(44,224,199,.10);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:11px 18px;font-size:14px}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--divider);
  background:
    linear-gradient(180deg, rgba(7,12,24,.72), rgba(7,12,24,.94)),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 340px at 82% 18%, rgba(44,224,199,.12), transparent 70%);
}
.hero-inner{padding:64px 0 72px;position:relative;z-index:2;max-width:830px}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--accent);opacity:.85}
.hero h1{
  font-size:clamp(30px,4.6vw,54px);line-height:1.2;font-weight:700;
  margin-bottom:18px;
}
.hero h1 .hl{
  background:linear-gradient(135deg,var(--accent),var(--brand));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:680px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;max-width:720px;
}
.metric{
  background:rgba(13,21,38,.72);
  border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;
}
.metric .m-top{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.metric .m-top i{color:var(--accent);font-size:13px}
.metric strong{display:block;font-size:20px;margin-top:6px;color:var(--text)}

/* 卡片网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  position:relative;
}
.card:hover{transform:translateY(-4px);border-color:rgba(44,224,199,.42);box-shadow:var(--shadow-card),var(--shadow-glow)}
.card .c-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(44,224,199,.10);border:1px solid rgba(44,224,199,.28);
  color:var(--accent);font-size:17px;margin-bottom:16px;
}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.card ul li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);line-height:1.85;
}
.card ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);opacity:.8;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;
  padding:4px 10px;border-radius:var(--radius-tag);
  border:1px solid rgba(44,224,199,.32);background:rgba(44,224,199,.08);
  color:var(--accent);margin-right:8px;
}
.tag.promo{border-color:rgba(255,162,58,.36);background:rgba(255,162,58,.10);color:var(--promo)}
.tag.muted{border-color:var(--line);background:rgba(255,255,255,.02);color:var(--text-2)}

/* 分类说明区 */
.intro-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-left:3px solid var(--accent);
  border-radius:var(--radius-card);
  padding:28px 30px;
  color:var(--text-2);
  font-size:16px;
  box-shadow:var(--shadow-card);
  margin-bottom:40px;
}
.intro-panel strong{color:var(--text)}

/* 发光分隔线 */
.divider-glow{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,transparent,rgba(44,224,199,.65),rgba(42,91,255,.45),transparent);
  box-shadow:0 0 18px rgba(44,224,199,.25);
}
.divider-wrap{padding:0;position:relative;z-index:1}
.divider-label{
  text-align:center;font-size:12px;letter-spacing:.16em;color:var(--text-3);
  padding:26px 0 34px;
}

/* 步骤阶梯 */
.steps{position:relative;padding-left:8px}
.step{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:27px;top:52px;bottom:0;width:0;
  border-left:1px dashed rgba(140,170,220,.25);
}
.step:last-child::before{display:none}
.step-dot{
  width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--raised);border:1px solid var(--line);
  color:var(--accent);font-weight:700;font-size:18px;
  box-shadow:0 0 22px rgba(44,224,199,.14);
  position:relative;z-index:2;
}
.step:first-child .step-dot{
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;border-color:transparent;
}
.step-body{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px 24px;
  box-shadow:var(--shadow-card);
}
.step-body h3{font-size:19px;margin-bottom:8px}
.step-body p{color:var(--text-2);font-size:15px;margin-bottom:0}

/* 图文区块 */
.figure-row{
  display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;
}
.figure-row.reverse .figure-text{order:2}
.figure-row.reverse .figure-media{order:1}
.figure-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
}
.figure-text h2{font-size:clamp(22px,2.6vw,34px);margin-bottom:14px}
.figure-text p{color:var(--text-2)}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);padding:10px 0;
  border-bottom:1px solid var(--divider);
}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--accent);margin-top:5px;font-size:14px}

/* 排查对照 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-card);
}
.compare-col h3{font-size:19px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.compare-col h3 i{color:var(--promo);font-size:16px}
.compare-col.alt h3 i{color:var(--accent)}
.compare-col ul li{
  font-size:15px;color:var(--text-2);padding:11px 0;border-bottom:1px solid var(--divider);
  display:flex;gap:10px;align-items:flex-start;
}
.compare-col ul li:last-child{border-bottom:0}
.compare-col ul li i{font-size:13px;margin-top:6px;color:var(--text-3)}
.compare-col.alt ul li i{color:var(--success)}

/* FAQ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item[open]{border-color:rgba(44,224,199,.55);box-shadow:var(--shadow-glow)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item .q-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  background:rgba(44,224,199,.10);border:1px solid rgba(44,224,199,.30);color:var(--accent);
}
.faq-item .plus{margin-left:auto;color:var(--text-3);transition:transform var(--ease),color var(--ease)}
.faq-item[open] .plus{transform:rotate(45deg);color:var(--accent)}
.faq-body{
  padding:0 22px 20px 62px;color:var(--text-2);font-size:15px;line-height:1.9;
  border-top:1px solid var(--divider);padding-top:16px;
}
.faq-body p:last-child{margin-bottom:0}

/* 分类互链 */
.tile-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.tile{
  display:block;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:22px 20px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tile:hover{transform:translateY(-4px);border-color:rgba(44,224,199,.45);box-shadow:var(--shadow-glow);color:var(--text)}
.tile .t-icon{color:var(--accent);font-size:17px;margin-bottom:12px}
.tile h3{font-size:17px;margin-bottom:6px}
.tile p{font-size:13px;color:var(--text-3);margin-bottom:12px}
.tile .t-go{font-size:13px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.tile:hover .t-go{color:var(--accent)}
.tile:hover .t-go i{transform:translateX(4px)}
.tile .t-go i{transition:transform var(--ease)}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid rgba(44,224,199,.35);
  background:
    linear-gradient(120deg, rgba(7,12,24,.90), rgba(20,42,110,.72)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  padding:46px 40px;
  display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;
  box-shadow:var(--shadow-card),var(--shadow-glow);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:var(--text-2);margin-bottom:0;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Footer */
.site-footer{margin-top:20px;background:#05090F;border-top:1px solid var(--divider);position:relative;z-index:1}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:60px 0 40px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul li{margin-bottom:11px;font-size:14px;color:var(--text-3)}
.footer-col ul li a{color:var(--text-2);font-size:14px}
.footer-col ul li a:hover{color:var(--accent)}
.footer-col ul li i{color:var(--accent);margin-right:8px;font-size:12px}
.footer-bottom{
  border-top:1px solid var(--divider);padding:20px 0 30px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);margin:0}

/* 响应式 */
@media (max-width:1199px){
  .grid-3{gap:20px}
  .grid-4{gap:18px}
  .footer-grid{gap:28px}
}
@media (max-width:1023px){
  :root{--space:64px}
  .header-inner{grid-template-columns:auto 1fr auto;gap:16px}
  .nav-side,.header-cta{display:none}
  .menu-toggle{display:grid;place-items:center}
  .mobile-drawer{display:block}
  body.menu-open .mobile-drawer{max-height:520px}
  .header-inner .brand{justify-self:center}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .figure-row{grid-template-columns:1fr;gap:26px}
  .figure-row.reverse .figure-text{order:1}
  .figure-row.reverse .figure-media{order:2}
  .compare{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--space:56px}
  .container{padding:0 18px}
  .hero-inner{padding:44px 0 52px}
  .hero-metrics{grid-template-columns:1fr;gap:12px}
  .grid-3,.grid-2,.grid-4,.tile-row{grid-template-columns:1fr}
  .step{grid-template-columns:44px 1fr;gap:16px}
  .step-dot{width:44px;height:44px;font-size:15px}
  .step::before{left:21px;top:44px}
  .faq-body{padding-left:22px}
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:2px;padding:8px 0;min-height:0}
  .section-head{margin-bottom:26px}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero h1{font-size:clamp(26px,8vw,34px)}
  .btn{width:100%;padding:14px 18px}
  .hero-actions{gap:10px}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 30px}
  .card{padding:22px 18px}
  .intro-panel{padding:22px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .card:hover,.tile:hover,.btn-glow:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raise:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --promo:#FFA23A;
  --text:#EAF0FB;
  --text-2:#9DAAC4;
  --text-3:#6C7A96;
  --line:rgba(140,170,220,.16);
  --line-soft:rgba(140,170,220,.10);
  --ok:#3FD68C;
  --warn:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:6px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 32px rgba(44,224,199,.18);
  --container:1200px;
  --section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 6% -8%,rgba(44,224,199,.06),transparent 70%),
    radial-gradient(700px 500px at 102% 100%,rgba(42,91,255,.08),transparent 70%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.04;
  background-image:
    linear-gradient(rgba(140,170,220,.7) 1px,transparent 1px),
    linear-gradient(90deg,rgba(140,170,220,.7) 1px,transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(44,224,199,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.row{max-width:1248px;margin-left:auto;margin-right:auto}
.column{padding-left:15px;padding-right:15px}

/* ---------- 顶部提示条 ---------- */
.topbar{background:rgba(255,162,58,.06);border-bottom:1px solid rgba(255,162,58,.22);position:relative;z-index:2}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:14px;height:38px;font-size:12px;letter-spacing:.04em}
.topbar .tag{color:var(--promo);font-weight:700;display:inline-flex;align-items:center;gap:8px}
.topbar .tag i{font-size:11px}
.topbar a{color:var(--text-3);font-size:12px}
.topbar a:hover{color:var(--promo)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,24,.86);
  border-bottom:1px solid var(--line-soft);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{background:rgba(7,12,24,.96);box-shadow:0 12px 34px rgba(0,0,0,.5)}
.nav-wrap{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:16px;height:76px;
}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-side.right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;
  transition:color .25s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text);letter-spacing:.01em}
.brand:hover{color:var(--text)}
.brand .mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;font-size:15px;box-shadow:var(--glow);
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  place-items:center;color:var(--accent);font-size:17px;cursor:pointer;
  transition:border-color .25s ease,background .25s ease;
}
.nav-toggle:hover{border-color:rgba(44,224,199,.55);background:rgba(44,224,199,.08)}

.mobile-drawer{
  position:fixed;top:0;left:0;right:0;z-index:70;
  background:#0A1120;border-bottom:1px solid var(--line);
  transform:translateY(-102%);transition:transform .3s ease;
  padding:70px 0 18px;box-shadow:0 24px 50px rgba(0,0,0,.6);
}
.mobile-drawer.open{transform:translateY(0)}
.mobile-drawer .m-list{display:grid;gap:0;padding:0 24px}
.mobile-drawer .m-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--text-2);
}
.mobile-drawer .m-list a.active{color:var(--accent)}
.mobile-drawer .m-cta{padding:18px 24px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15px;padding:13px 26px;border-radius:999px;
  cursor:pointer;border:0;text-align:center;
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease,background .25s ease,color .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;box-shadow:0 12px 28px rgba(42,91,255,.28);
}
.btn-primary:hover{color:#04101F;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 0 24px rgba(44,224,199,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(44,224,199,.3)}
.btn-ghost{
  background:transparent;border:1px solid var(--accent);color:var(--accent);border-radius:12px;
}
.btn-ghost:hover{background:rgba(44,224,199,.10);color:var(--accent);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;position:relative;z-index:1}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--accent);margin:0 9px}
.crumb .now{color:var(--text-2)}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section) 0 0}
.section:last-of-type{padding-bottom:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3}
.section-head .sub{margin-top:10px;color:var(--text-3);font-size:15px;max-width:62ch}
.more-link{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.more-link:hover{color:var(--accent)}
.more-link i{transition:transform .25s ease}
.more-link:hover i{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{padding:52px 0 0}
.hero-row{align-items:center}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.2;letter-spacing:-.01em}
.hero .lead{margin-top:20px;font-size:17px;color:var(--text-2);max-width:52ch}
.hero .note{margin-top:18px;font-size:15px;color:var(--text-3);line-height:1.95;max-width:60ch}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-metrics{
  margin-top:38px;padding-top:24px;border-top:1px solid var(--line-soft);
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.metric{display:flex;gap:12px;align-items:flex-start}
.metric i{color:var(--accent);font-size:16px;margin-top:5px}
.metric .num{display:block;font-size:20px;font-weight:700;color:var(--text);line-height:1.4}
.metric .lbl{display:block;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;padding:12px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow),var(--glow);
}
.hero-visual img{border-radius:14px;width:100%;aspect-ratio:16/11;object-fit:cover;background:var(--panel)}
.badge-float{
  position:absolute;display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;padding:8px 14px;border-radius:999px;
  background:rgba(7,12,24,.82);border:1px solid var(--line);color:var(--text-2);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.badge-float i{color:var(--accent)}
.badge-float.b1{top:26px;left:26px}
.badge-float.b2{bottom:26px;right:26px}
.badge-float.b2 i{color:var(--promo)}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow);
}
.stat{display:flex;flex-direction:column;gap:4px;padding-left:18px;border-left:2px solid rgba(44,224,199,.35)}
.stat:first-child{border-left-color:rgba(44,224,199,.8)}
.stat .num{font-size:26px;font-weight:700;line-height:1.3;color:var(--text);font-variant-numeric:tabular-nums}
.stat .txt{font-size:13px;color:var(--text-3);letter-spacing:.03em}

/* ---------- 图文块 ---------- */
.media-block{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}
.media-block.reverse .media-text{order:2}
.media-block.reverse .media-pic{order:1}
.media-pic{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--panel)}
.media-pic img{width:100%;aspect-ratio:16/10;object-fit:cover}
.media-text h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;margin-bottom:18px}
.media-text p{color:var(--text-2);font-size:15.5px;line-height:1.95}
.media-list{margin-top:22px;display:grid;gap:14px}
.media-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.media-list i{color:var(--accent);margin-top:6px;font-size:13px}

/* ---------- 阶梯步骤 ---------- */
.steps{display:grid;gap:26px}
.step{display:grid;grid-template-columns:58px 1fr;gap:22px;position:relative}
.step::before{
  content:"";position:absolute;left:28px;top:64px;bottom:-26px;width:1px;
  border-left:1px dashed rgba(140,170,220,.25);
}
.step:last-child::before{display:none}
.step .dot{
  width:58px;height:58px;border-radius:16px;display:grid;place-items:center;
  font-weight:700;font-size:18px;background:var(--raise);border:1px solid var(--line);
  color:var(--text-2);position:relative;z-index:1;transition:all .25s ease;
}
.step.is-key .dot{
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;border-color:transparent;box-shadow:0 0 24px rgba(44,224,199,.35);
}
.step .body{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;box-shadow:var(--shadow);transition:border-color .25s ease,transform .25s ease;
}
.step:hover .body{border-color:rgba(44,224,199,.45);transform:translateY(-2px)}
.step h3{font-size:18px;margin-bottom:8px;font-weight:600}
.step p{color:var(--text-2);font-size:15px}
.steps .step:nth-child(2){margin-left:20px}
.steps .step:nth-child(3){margin-left:40px}
.steps .step:nth-child(4){margin-left:60px}
.steps .step:nth-child(5){margin-left:80px}

/* ---------- 标签 ---------- */
.tips{margin-top:14px;display:flex;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  padding:5px 11px;border-radius:var(--radius-xs);
  border:1px solid rgba(44,224,199,.4);background:rgba(44,224,199,.08);color:var(--accent);
}
.chip.warn{border-color:rgba(255,107,107,.42);background:rgba(255,107,107,.08);color:var(--warn)}
.chip.promo{border-color:rgba(255,162,58,.45);background:rgba(255,162,58,.10);color:var(--promo)}
.chip.plain{border-color:var(--line);background:rgba(140,170,220,.06);color:var(--text-2)}

/* ---------- 清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:18px 20px;transition:border-color .25s ease,transform .25s ease;
}
.check-item:hover{border-color:rgba(44,224,199,.4);transform:translateY(-2px)}
.check-item i{font-size:15px;margin-top:6px;color:var(--ok)}
.check-item.bad i{color:var(--warn)}
.check-item strong{display:block;font-size:15.5px;font-weight:600;margin-bottom:6px;color:var(--text)}
.check-item span{display:block;font-size:14px;color:var(--text-2);line-height:1.85}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.faq-item.open{border-color:var(--accent);background:var(--raise)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--text);
  transition:color .25s ease;
}
.faq-q .q-left{display:flex;align-items:center;gap:12px}
.faq-q .q-left i{color:var(--accent);font-size:15px;flex:none}
.faq-q .ic{color:var(--accent);flex:none;transition:transform .25s ease;font-size:14px}
.faq-item.open .faq-q .ic{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 22px 49px;color:var(--text-2);font-size:15px;line-height:1.9}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:grid;grid-template-columns:1.45fr .55fr;gap:28px;align-items:center;
  border:1px solid var(--line);border-radius:20px;padding:40px;
  background:linear-gradient(135deg,rgba(42,91,255,.18),rgba(44,224,199,.10));
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,224,199,.18),transparent 70%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:14px;position:relative;z-index:1}
.cta-band p{color:var(--text-2);font-size:15px;max-width:60ch;position:relative;z-index:1}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;position:relative;z-index:1}

/* ---------- 分类瓷片 ---------- */
.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tile{
  display:flex;flex-direction:column;gap:10px;min-height:168px;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,color .25s ease;
}
.tile:hover{transform:translateY(-4px);border-color:rgba(44,224,199,.55);box-shadow:var(--glow);color:var(--text)}
.tile .t-name{font-size:16px;font-weight:600}
.tile .t-desc{font-size:13.5px;color:var(--text-3);line-height:1.8}
.tile .t-arrow{margin-top:auto;color:var(--accent);font-size:14px;display:inline-flex;align-items:center;gap:8px;transition:gap .25s ease}
.tile:hover .t-arrow{gap:14px}
.tile.current{border-color:rgba(44,224,199,.55);box-shadow:var(--glow)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section);background:#05090F;border-top:1px solid var(--line-soft);
  padding:66px 0 0;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;padding-bottom:46px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.95;max-width:38ch}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;color:var(--text-3);display:flex;gap:9px;align-items:flex-start;line-height:1.8}
.footer-col li i{color:var(--accent);font-size:12px;margin-top:7px;flex:none}
.footer-col a{color:var(--text-3);font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid var(--line-soft);padding:20px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);letter-spacing:.02em}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-side{gap:22px}
  .steps .step:nth-child(2){margin-left:12px}
  .steps .step:nth-child(3){margin-left:24px}
  .steps .step:nth-child(4){margin-left:36px}
  .steps .step:nth-child(5){margin-left:48px}
}
@media (max-width:1023px){
  :root{--section:64px}
  .nav-side{display:none}
  .nav-toggle{display:grid;justify-self:start}
  .nav-wrap{grid-template-columns:auto 1fr auto;height:70px}
  .nav-wrap .brand{justify-self:center}
  .nav-wrap .nav-side.right{display:none}
  .hero{padding:38px 0 0}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:16px}
  .media-block{grid-template-columns:1fr;gap:30px}
  .media-block.reverse .media-text{order:1}
  .media-block.reverse .media-pic{order:2}
  .stat-strip{grid-template-columns:1fr 1fr;gap:22px 18px}
  .tile-grid{grid-template-columns:1fr 1fr}
  .checklist{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  :root{--section:56px}
  .container{padding:0 18px}
  .topbar .container{height:auto;padding-top:8px;padding-bottom:8px;flex-direction:column;align-items:flex-start;gap:2px}
  .hero h1{font-size:clamp(26px,7.4vw,36px)}
  .hero .lead{font-size:16px}
  .hero-metrics{grid-template-columns:1fr;gap:14px}
  .hero-actions .btn{flex:1 1 auto}
  .badge-float.b1{top:16px;left:16px}
  .badge-float.b2{bottom:16px;right:16px}
  .section-head{margin-bottom:26px}
  .stat-strip{padding:22px 20px;grid-template-columns:1fr}
  .step{grid-template-columns:46px 1fr;gap:16px}
  .step .dot{width:46px;height:46px;border-radius:13px;font-size:16px}
  .step::before{left:22px;top:52px}
  .steps .step:nth-child(n){margin-left:0}
  .step .body{padding:18px 20px}
  .faq-a p{padding-left:22px}
  .tile-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .btn{width:100%}
  .cta-actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .stat .num{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .tile:hover,.step:hover .body,.btn:hover{transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#070C18;
  --panel:#0D1526;
  --raised:#121C33;
  --brand:#2A5BFF;
  --brand-deep:#142A6E;
  --accent:#2CE0C7;
  --promo:#FFA23A;
  --text:#EAF0FB;
  --text-2:#9DAAC4;
  --text-3:#6C7A96;
  --line:rgba(140,170,220,.16);
  --line-soft:rgba(140,170,220,.10);
  --ok:#3FD68C;
  --warn:#FF6B6B;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:6px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 32px rgba(44,224,199,.18);
  --container:1200px;
  --gap:24px;
  --section:88px;
}

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

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

body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(560px 420px at 8% -6%, rgba(44,224,199,.10), transparent 70%),
    radial-gradient(720px 520px at 100% 12%, rgba(42,91,255,.16), transparent 72%),
    radial-gradient(600px 500px at 50% 108%, rgba(42,91,255,.10), transparent 75%);
  pointer-events:none;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  opacity:.045;
  background-image:
    linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}

img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm);}
a{color:var(--text);text-decoration:none;transition:color .25s ease, border-color .25s ease, background-color .25s ease, transform .25s ease;}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

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

/* ============ 顶部提示条 ============ */
.topbar{
  border-bottom:1px solid rgba(255,162,58,.28);
  background:linear-gradient(90deg, rgba(255,162,58,.10), rgba(255,162,58,.03));
  font-size:13px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:38px;
  padding:6px 0;
}
.topbar-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--promo);
  font-weight:600;
  letter-spacing:.04em;
}
.topbar-tag i{font-size:12px;}
.topbar-link{
  color:var(--text-2);
  font-size:13px;
  border-bottom:1px solid rgba(140,170,220,.24);
  padding-bottom:1px;
}
.topbar-link:hover{color:var(--promo);border-color:var(--promo);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,24,.86);
  border-bottom:1px solid transparent;
  transition:background-color .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(9,14,26,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line-soft);
  box-shadow:0 12px 30px rgba(0,0,0,.36);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:18px;
  letter-spacing:.02em;
  color:var(--text);
  white-space:nowrap;
}
.brand .mark{
  width:34px;
  height:34px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#04101F;
  font-size:15px;
  box-shadow:0 0 18px rgba(44,224,199,.28);
}
.brand:hover{color:var(--text);}
.nav-side{
  display:flex;
  align-items:center;
  gap:26px;
}
.nav-side.left{justify-content:flex-start;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--brand));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  color:#04101F;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  box-shadow:0 0 20px rgba(44,224,199,.30);
  transition:transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.nav-cta:hover{
  color:#04101F;
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 0 26px rgba(44,224,199,.48);
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--accent);
  font-size:16px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line-soft);
  background:rgba(9,14,26,.97);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.mobile-drawer a{
  display:block;
  padding:14px 4px;
  min-height:52px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.mobile-drawer a:hover{color:var(--accent);}
.mobile-drawer .drawer-cta{
  margin:16px 0 20px;
  text-align:center;
  border-radius:999px;
  font-weight:700;
  color:#04101F;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  border-bottom:none;
}
.site-header.nav-open .mobile-drawer{display:block;}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:20px 0 0;
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--accent);opacity:.8;}
.breadcrumb .current{color:var(--text-2);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:56px 0 64px;
}
.hero-panel{
  position:relative;
  border:1px solid var(--line);
  border-radius:calc(var(--radius) + 6px);
  background:
    linear-gradient(180deg, rgba(13,21,38,.92), rgba(7,12,24,.96)),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.hero-panel::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(620px 380px at 88% 10%, rgba(44,224,199,.16), transparent 70%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:center;
  padding:56px 48px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  border:1px solid rgba(44,224,199,.35);
  background:rgba(44,224,199,.08);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.2;
  letter-spacing:.01em;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-sub{
  font-size:16px;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:32px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  font-size:15px;
  font-weight:600;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s ease, box-shadow .25s ease, filter .25s ease, background-color .25s ease, border-color .25s ease, color .25s ease;
}
.btn-primary{
  color:#04101F;
  font-weight:700;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  box-shadow:0 0 22px rgba(44,224,199,.28);
}
.btn-primary:hover{
  color:#04101F;
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 0 28px rgba(44,224,199,.48);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(44,224,199,.26);}
.btn-ghost{
  color:var(--accent);
  background:transparent;
  border-color:rgba(44,224,199,.55);
  border-radius:var(--radius-sm);
}
.btn-ghost:hover{
  color:var(--accent);
  background:rgba(44,224,199,.10);
  transform:translateY(-2px);
}
.btn-quiet{
  color:var(--text-2);
  background:rgba(140,170,220,.08);
  border-color:var(--line);
  border-radius:var(--radius-sm);
  padding:10px 20px;
  font-size:14px;
}
.btn-quiet:hover{color:var(--text);background:rgba(140,170,220,.16);}

.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}
.stat{
  display:flex;
  align-items:center;
  gap:12px;
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:var(--radius-sm);
  padding:12px 16px;
  min-width:186px;
}
.stat i{color:var(--accent);font-size:16px;}
.stat strong{display:block;font-size:14px;font-weight:600;}
.stat span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.03em;}

.hero-visual{
  position:relative;
}
.hero-visual .frame{
  border-radius:var(--radius);
  border:1px solid rgba(44,224,199,.28);
  box-shadow:var(--glow), var(--shadow);
  overflow:hidden;
  background:var(--panel);
}
.hero-visual .frame img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:0;
}
.float-badge{
  position:absolute;
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border-radius:999px;
  font-size:13px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 12px 26px rgba(0,0,0,.42);
}
.float-badge i{color:var(--accent);}
.float-badge.b1{top:-14px;left:-10px;}
.float-badge.b2{bottom:-14px;right:-6px;}
.float-badge.b2 i{color:var(--promo);}

/* ============ 通用板块 ============ */
.section{padding:var(--section) 0;}
.section.tight{padding:56px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
  flex-wrap:wrap;
}
.section-head.center{
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.section-title{
  font-size:clamp(22px,2.6vw,32px);
  letter-spacing:.01em;
}
.section-sub{
  margin-top:10px;
  color:var(--text-2);
  font-size:15px;
  max-width:720px;
}
.section-more{
  font-size:14px;
  color:var(--text-2);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.section-more:hover{color:var(--accent);}
.section-more i{transition:transform .25s ease;}
.section-more:hover i{transform:translateX(4px);}

.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.divider-line{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg, transparent, rgba(44,224,199,.55), transparent);
}

/* 分类说明段 */
.intro-panel{
  background:linear-gradient(180deg, rgba(18,28,51,.9), rgba(13,21,38,.92));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:36px;
  position:relative;
  overflow:hidden;
}
.intro-panel::after{
  content:"";
  position:absolute;
  left:0;
  top:24px;
  bottom:24px;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.intro-panel p{color:var(--text-2);font-size:16px;}
.intro-panel p + p{margin-top:16px;}

/* 图文交替 */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
}
.split + .split{margin-top:64px;}
.split-media{
  border-radius:var(--radius);
  border:1px solid var(--line);
  overflow:hidden;
  background:var(--panel);
  box-shadow:var(--shadow);
}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
}
.split-body .tag-line{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--accent);
  border:1px solid rgba(44,224,199,.32);
  background:rgba(44,224,199,.08);
  border-radius:var(--radius-xs);
  padding:5px 12px;
  margin-bottom:16px;
}
.split-body h3{
  font-size:20px;
  margin-bottom:14px;
}
.split-body p{color:var(--text-2);font-size:15.5px;}
.split-body p + p{margin-top:14px;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}

/* 双列要点对比 */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.compare-col{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  padding:30px 28px;
  box-shadow:var(--shadow);
  position:relative;
}
.compare-col.is-a{border-top:3px solid rgba(44,224,199,.85);}
.compare-col.is-b{border-top:3px solid rgba(255,162,58,.85);}
.compare-col h3{
  font-size:19px;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:10px;
}
.compare-col h3 i{font-size:16px;}
.compare-col.is-a h3 i{color:var(--accent);}
.compare-col.is-b h3 i{color:var(--promo);}
.compare-col .lead{
  font-size:14px;
  color:var(--text-3);
  margin-bottom:20px;
}
.compare-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:15px;
  color:var(--text-2);
}
.compare-list li:last-child{border-bottom:0;padding-bottom:0;}
.compare-list i{margin-top:6px;font-size:13px;}
.compare-col.is-a .compare-list i{color:var(--accent);}
.compare-col.is-b .compare-list i{color:var(--promo);}
.compare-list strong{display:block;color:var(--text);font-weight:600;font-size:15px;margin-bottom:2px;}

/* 流程阶梯 */
.steps{
  position:relative;
  max-width:860px;
  margin:0 auto;
}
.step-item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:22px;
  padding-bottom:34px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";
  position:absolute;
  left:27px;
  top:56px;
  bottom:6px;
  width:1px;
  border-left:1px dashed rgba(140,170,220,.28);
}
.step-item:last-child::before{display:none;}
.step-dot{
  width:56px;
  height:56px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  font-size:17px;
  color:#04101F;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  box-shadow:0 0 22px rgba(44,224,199,.30);
  z-index:1;
}
.step-body{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 26px;
}
.step-body h3{font-size:18px;margin-bottom:8px;}
.step-body p{color:var(--text-2);font-size:15px;}

/* 分类互链 */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.cat-card{
  display:block;
  padding:26px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.cat-card i.arrow{
  display:inline-block;
  margin-top:16px;
  color:var(--text-3);
  transition:transform .25s ease, color .25s ease;
}
.cat-card h3{font-size:17px;margin-bottom:8px;}
.cat-card p{font-size:14px;color:var(--text-3);}
.cat-card:hover{
  transform:translateY(-4px);
  border-color:rgba(44,224,199,.55);
  box-shadow:0 0 26px rgba(44,224,199,.16), var(--shadow);
}
.cat-card:hover i.arrow{transform:translateX(4px);color:var(--accent);}
.cat-card.current{
  border-color:rgba(44,224,199,.6);
  background:linear-gradient(180deg, rgba(44,224,199,.10), rgba(13,21,38,.95));
}
.cat-card.current .badge-now{
  display:inline-block;
  font-size:12px;
  color:var(--accent);
  border:1px solid rgba(44,224,199,.4);
  border-radius:var(--radius-xs);
  padding:2px 8px;
  margin-bottom:10px;
  letter-spacing:.06em;
}
.badge-now{display:none;}

/* FAQ */
.faq-list{
  max-width:900px;
  margin:0 auto;
  display:grid;
  gap:14px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel);
  overflow:hidden;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.faq-item.open{
  border-color:rgba(44,224,199,.6);
  box-shadow:0 0 22px rgba(44,224,199,.14);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
}
.faq-q .q-icon{
  width:26px;
  height:26px;
  flex:0 0 26px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  color:var(--accent);
  border:1px solid rgba(44,224,199,.36);
  background:rgba(44,224,199,.08);
}
.faq-q .plus{
  margin-left:auto;
  color:var(--text-3);
  transition:transform .3s ease, color .3s ease;
}
.faq-item.open .faq-q .plus{transform:rotate(135deg);color:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a p{
  padding:0 22px 20px 62px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.9;
}
.faq-item.open .faq-a{max-height:320px;}

/* 咨询表单 */
.consult-wrap{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:36px;
  align-items:start;
}
.form-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.form-card h3{font-size:20px;margin-bottom:8px;}
.form-card .tip{font-size:14px;color:var(--text-3);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:8px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  background:#0A1120;
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text);
  font-size:15px;
  font-family:inherit;
  padding:0 14px;
  height:48px;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.field textarea{
  height:auto;
  min-height:120px;
  padding:12px 14px;
  line-height:1.8;
  resize:vertical;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px, calc(100% - 14px) 21px;background-size:6px 6px;background-repeat:no-repeat;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 16px rgba(44,224,199,.25);
}
.field .hint{font-size:12px;color:var(--text-3);margin-top:6px;}
.form-card .btn{width:100%;}

.assure-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:16px 0;
  border-bottom:1px solid var(--line-soft);
}
.assure-list li:last-child{border-bottom:0;}
.assure-list i{
  color:var(--accent);
  font-size:15px;
  margin-top:6px;
}
.assure-list strong{display:block;font-size:15px;font-weight:600;}
.assure-list span{display:block;font-size:14px;color:var(--text-3);}

/* CTA 条 */
.cta-band{
  position:relative;
  border-radius:calc(var(--radius) + 4px);
  border:1px solid rgba(44,224,199,.35);
  background:
    linear-gradient(120deg, rgba(7,12,24,.92), rgba(20,42,110,.72)),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(520px 300px at 92% 50%, rgba(255,162,58,.14), transparent 70%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:720px;}
.cta-copy h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:12px;}
.cta-copy p{color:var(--text-2);font-size:15px;}
.cta-actions{
  position:relative;
  z-index:1;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}

/* 页脚 */
.site-footer{
  background:#05090F;
  border-top:1px solid var(--line-soft);
  padding:66px 0 0;
  margin-top:20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;font-size:17px;}
.footer-brand p{color:var(--text-3);font-size:14px;max-width:340px;}
.footer-col h4{
  font-size:14px;
  letter-spacing:.08em;
  color:var(--text);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col li{margin-bottom:12px;font-size:14px;color:var(--text-3);display:flex;gap:9px;align-items:flex-start;}
.footer-col li i{color:var(--accent);margin-top:5px;font-size:12px;}
.footer-col a{color:var(--text-3);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:12px;color:var(--text-3);}

/* 空态（预留） */
.empty-state{
  text-align:center;
  padding:44px 20px;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  background:var(--panel);
}
.empty-state i{font-size:30px;color:rgba(44,224,199,.4);margin-bottom:14px;display:block;}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:16px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .header-inner{gap:16px;}
  .nav-side{gap:20px;}
  .hero-grid{padding:48px 36px;gap:30px;}
  .cat-grid{grid-template-columns:repeat(2,1fr);}
}

@media (max-width:1023px){
  :root{--section:64px;--gap:20px;}
  .nav-side.left,
  .nav-side.right,
  .brand{display:none;}
  .header-inner{
    grid-template-columns:42px 1fr 42px;
    min-height:64px;
    align-items:center;
    justify-items:center;
  }
  .nav-toggle{display:inline-flex;justify-self:start;}
  .mobile-brand{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-weight:700;
    font-size:16px;
    white-space:nowrap;
  }
  .mobile-brand .mark{
    width:28px;height:28px;border-radius:8px;font-size:13px;
    display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--brand),var(--accent));
    color:#04101F;
  }
  .hero-grid{grid-template-columns:1fr;padding:40px 28px;}
  .hero-visual{order:-1;}
  .split{grid-template-columns:1fr;gap:26px;}
  .split.reverse .split-media{order:0;}
  .split.reverse .split-body{order:0;}
  .compare{grid-template-columns:1fr;}
  .consult-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (min-width:1024px){
  .mobile-brand{display:none;}
}

@media (max-width:767px){
  :root{--section:52px;}
  .container{padding:0 18px;}
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:6px;padding:8px 0;}
  .hero{padding:32px 0 44px;}
  .hero-grid{padding:32px 20px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{flex-direction:column;}
  .stat{min-width:0;width:100%;}
  .float-badge{display:none;}
  .panel,.intro-panel,.form-card{padding:24px 20px;}
  .intro-panel::after{top:18px;bottom:18px;}
  .cta-band{padding:30px 22px;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .step-item{grid-template-columns:44px 1fr;gap:14px;}
  .step-dot{width:44px;height:44px;font-size:15px;}
  .step-item::before{left:21px;top:46px;}
  .faq-a p{padding:0 18px 18px 18px;}
  .footer-bottom{flex-direction:column;}
  .cat-grid{grid-template-columns:1fr;}
}

@media (max-width:520px){
  .brand{font-size:16px;}
  .section-title{font-size:22px;}
  .hero h1{font-size:27px;}
  .footer-grid{grid-template-columns:1fr;}
  .compare-col{padding:24px 18px;}
  .step-body{padding:18px;}
}

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