/* roulang page: index */
:root{
  --bg-base:#070E1A;
  --bg-raise:#0C1626;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(122,158,196,.18);
  --brand:#2FB4E6;
  --brand-deep:#1361A8;
  --accent:#F2B24C;
  --text-1:#E9F1FA;
  --text-2:#A6B8CC;
  --text-3:#6E8299;
  --danger:#FF8A8A;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.28);
  --glow-brand:0 0 0 1px rgba(47,180,230,.35),0 10px 30px rgba(47,180,230,.22);
  --header-h:68px;
  --anchor-h:48px;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono","Cascadia Mono",Consolas,monospace;
  --bs-body-bg:var(--bg-base);
  --bs-body-color:var(--text-1);
  --bs-border-color:var(--line);
  --bs-border-radius:var(--r-btn);
  --bs-border-radius-lg:var(--r-card);
  --bs-primary:var(--brand);
  --bs-primary-rgb:47,180,230;
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#65CBF0;
  --bs-font-sans-serif:var(--font-sans);
  --bs-emphasis-color:var(--text-1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(circle at 10% 6%, rgba(47,180,230,.08), transparent 46%),
    radial-gradient(circle at 90% 92%, rgba(242,178,76,.06), transparent 44%),
    linear-gradient(rgba(122,158,196,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,158,196,.03) 1px, transparent 1px);
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-size:100% 100%,100% 100%,64px 64px,64px 64px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:#65CBF0;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.01em;line-height:1.35;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(47,180,230,.32);color:#fff;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;padding-left:20px;padding-right:20px;}
.section{padding:100px 0;}
.section--tight{padding:80px 0;}
.section--raise{background:linear-gradient(180deg,rgba(12,22,38,0),rgba(12,22,38,.72) 22%,rgba(12,22,38,.72) 78%,rgba(12,22,38,0));}
section[id]{scroll-margin-top:calc(var(--header-h) + var(--anchor-h) + 18px);}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-text{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);cursor:pointer;transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;}
.btn-brand{padding:14px 26px;color:#fff;border:0;background:linear-gradient(135deg,var(--brand),var(--brand-deep));box-shadow:var(--glow-brand);}
.btn-brand:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,180,230,.45),0 14px 34px rgba(47,180,230,.3);}
.btn-brand:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,180,230,.35),0 6px 18px rgba(47,180,230,.2);}
.btn-ghost{padding:13px 24px;color:var(--text-1);background:transparent;border:1px solid var(--line);}
.btn-ghost:hover{color:var(--brand);background:var(--glass-strong);border-color:rgba(47,180,230,.4);transform:translateY(-1px);}
.btn-text{padding:6px 2px;color:var(--brand);background:none;border:0;position:relative;}
.btn-text::after{content:"";position:absolute;left:0;bottom:2px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s ease-out;}
.btn-text:hover::after{transform:scaleX(1);}
.btn-brand[disabled],.btn-ghost[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:transparent;border-bottom:1px solid transparent;transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;}
.site-header.scrolled{background:rgba(7,14,26,.78);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border-bottom-color:var(--line);}
.header-inner{max-width:1280px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(47,180,230,.22),rgba(19,97,168,.4));border:1px solid rgba(47,180,230,.35);color:var(--brand);}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
.search-box{flex:1 1 auto;max-width:600px;display:flex;align-items:center;gap:8px;padding:6px 6px 6px 16px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--line);transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,180,230,.14);background:var(--glass-strong);}
.search-box svg{flex:0 0 auto;color:var(--text-3);}
.search-box input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;color:var(--text-1);font-size:14.5px;padding:8px 0;}
.search-box input::placeholder{color:var(--text-3);}
.search-box button{flex:0 0 auto;border:0;border-radius:var(--r-pill);padding:9px 18px;font-size:14px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-deep));transition:filter .2s ease;}
.search-box button:hover{filter:brightness(1.08);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex:0 0 auto;}
.nav-link{position:relative;padding:9px 13px;border-radius:var(--r-pill);font-size:14.5px;color:var(--text-2);white-space:nowrap;transition:color .2s ease,background-color .2s ease;}
.nav-link:hover{color:var(--text-1);background:var(--glass);}
.nav-link.active{color:var(--text-1);background:var(--glass-strong);}
.nav-link.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:18px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(47,180,230,.85);}
.nav-cta{flex:0 0 auto;padding:11px 20px;font-size:14.5px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--text-1);align-items:center;justify-content:center;}
.nav-toggle:hover{background:var(--glass-strong);color:var(--brand);}

/* ---------- 锚点条 ---------- */
.anchor-bar{position:sticky;top:var(--header-h);z-index:1030;background:rgba(7,14,26,.72);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border-bottom:1px solid var(--line);}
.anchor-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-link{position:relative;padding:14px 14px 13px;font-size:14px;color:var(--text-2);white-space:nowrap;transition:color .2s ease;}
.anchor-link:hover{color:var(--text-1);}
.anchor-link.active{color:var(--text-1);}
.anchor-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(47,180,230,.85);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 88px;overflow:hidden;}
.hero-bg{position:absolute;inset:0;z-index:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;opacity:.34;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,14,26,.96) 0%,rgba(7,14,26,.86) 42%,rgba(7,14,26,.55) 72%,rgba(7,14,26,.9) 100%);}
.hero-inner{position:relative;z-index:1;max-width:1280px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;min-height:60vh;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--line);font-size:13px;color:var(--text-2);}
.hero-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(242,178,76,.9);}
.hero h1{margin:22px 0 18px;font-size:clamp(28px,4vw,44px);font-weight:700;letter-spacing:.01em;}
.hero h1 .hl{color:var(--brand);}
.hero-sub{max-width:600px;font-size:16.5px;color:var(--text-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13.5px;color:var(--text-3);}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta svg{color:var(--brand);}
.hero-visual{position:relative;}
.hero-figure{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:var(--bg-raise);}
.hero-figure img{width:100%;height:auto;aspect-ratio:16/11;object-fit:cover;}
.hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(to top right,rgba(7,14,26,.85),rgba(7,14,26,0) 58%);pointer-events:none;}
.hero-float{position:absolute;left:-16px;bottom:-26px;width:min(300px,86%);padding:18px 20px;border-radius:var(--r-card);background:rgba(12,22,38,.82);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--line);box-shadow:var(--shadow-card);}
.hero-float .k{font-size:12.5px;color:var(--text-3);}
.hero-float .v{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--accent);letter-spacing:.02em;}
.hero-float .d{font-size:12.5px;color:var(--text-2);margin-top:2px;}

/* ---------- 通用板块头 ---------- */
.sec-head{max-width:720px;margin-bottom:48px;}
.sec-tag{display:inline-block;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--brand);border:1px solid rgba(47,180,230,.32);background:rgba(47,180,230,.08);padding:5px 12px;border-radius:var(--r-pill);}
.sec-head h2{margin:16px 0 14px;font-size:clamp(22px,2.6vw,30px);}
.sec-head p{color:var(--text-2);font-size:15.5px;}

/* ---------- 卖点 ---------- */
.sell-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;align-items:stretch;}
.sell-main{position:relative;padding:34px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.03));backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--line);box-shadow:var(--shadow-card);overflow:hidden;}
.sell-main .num{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.1em;}
.sell-main h3{margin:14px 0 14px;font-size:24px;}
.sell-main p{color:var(--text-2);max-width:560px;}
.sell-main .sell-figure{margin-top:26px;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
.sell-main .sell-figure img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;}
.sell-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.sell-card{padding:26px;border-radius:var(--r-card);background:var(--glass);backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);border:1px solid var(--line);transition:border-color .2s ease,transform .2s ease-out,background-color .2s ease;display:flex;flex-direction:column;justify-content:center;}
.sell-card:hover{border-color:rgba(47,180,230,.42);background:var(--glass-strong);transform:translateY(-2px);}
.sell-card .num{font-family:var(--font-mono);font-size:12.5px;color:var(--accent);letter-spacing:.1em;}
.sell-card h3{margin:12px 0 10px;font-size:19px;}
.sell-card p{color:var(--text-2);font-size:14.5px;}

/* ---------- 演示 ---------- */
.demo-panel{display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:start;}
.demo-shot{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-raise);box-shadow:var(--shadow-card);}
.demo-shot img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;}
.demo-note{padding:26px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);}
.demo-note h3{font-size:19px;margin-bottom:12px;}
.demo-note ul{display:grid;gap:12px;}
.demo-note li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);}
.demo-note li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:3px;background:rgba(47,180,230,.28);border:1px solid rgba(47,180,230,.7);}
.demo-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;border-bottom:1px solid var(--line);}
.demo-tabs .nav-link{border:0;border-radius:0;padding:13px 16px;font-size:15px;color:var(--text-2);background:transparent;}
.demo-tabs .nav-link:hover{color:var(--text-1);background:var(--glass);}
.demo-tabs .nav-link.active{color:var(--text-1);background:transparent;position:relative;}
.demo-tabs .nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(47,180,230,.9);}

/* ---------- 证据 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--line);margin-bottom:44px;}
.stat-item{padding:28px 24px;background:var(--bg-raise);}
.stat-num{font-family:var(--font-mono);font-size:34px;font-weight:700;color:var(--accent);letter-spacing:-.01em;line-height:1.1;}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px;}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--text-2);}
.review-track{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:thin;}
.review-track::-webkit-scrollbar{height:6px;}
.review-track::-webkit-scrollbar-thumb{background:rgba(122,158,196,.3);border-radius:6px;}
.review-card{flex:0 0 calc((100% - 44px)/3);scroll-snap-align:start;padding:26px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);transition:border-color .2s ease,transform .2s ease-out;}
.review-card:hover{border-color:rgba(47,180,230,.4);transform:translateY(-2px);}
.review-card .quote{font-size:15px;color:var(--text-1);min-height:96px;}
.review-card .who{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);}
.review-card .avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:rgba(47,180,230,.14);border:1px solid rgba(47,180,230,.35);color:var(--brand);font-size:13px;font-weight:700;}

/* ---------- 内容列表 ---------- */
.post-card{display:flex;flex-direction:column;height:100%;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);overflow:hidden;color:var(--text-1);transition:transform .2s ease-out,border-color .2s ease,box-shadow .2s ease;box-shadow:var(--shadow-card);}
.post-card:hover{transform:translateY(-2px);border-color:rgba(47,180,230,.45);color:var(--text-1);box-shadow:0 14px 32px rgba(0,0,0,.34);}
.post-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#12233b,#0b1424);}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.post-card:hover .post-cover img{transform:scale(1.04);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.post-badge{align-self:flex-start;font-size:12px;padding:4px 11px;border-radius:var(--r-pill);background:rgba(47,180,230,.12);border:1px solid rgba(47,180,230,.3);color:var(--brand);margin-bottom:12px;}
.post-title{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;}
.post-card:hover .post-title{color:var(--brand);}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;font-family:var(--font-mono);font-size:12.5px;color:var(--text-3);}
.post-arrow{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);color:var(--text-2);transition:transform .2s ease-out,color .2s ease,border-color .2s ease;}
.post-card:hover .post-arrow{transform:translateX(2px);color:var(--brand);border-color:rgba(47,180,230,.5);}
.cms-empty{margin-top:8px;padding:56px 24px;border-radius:var(--r-card);border:1px dashed rgba(122,158,196,.32);background:rgba(255,255,255,.025);text-align:center;}
.cms-empty svg{color:var(--text-3);margin-bottom:14px;}
.cms-empty p{color:var(--text-2);font-size:15px;}
.cms-empty .btn-ghost{margin-top:20px;}
.list-foot{margin-top:38px;text-align:center;}

/* ---------- 价格 ---------- */
.price-wrap{display:grid;grid-template-columns:280px 1fr;gap:24px;align-items:start;}
.price-switch{display:grid;gap:12px;}
.price-switch button{display:block;width:100%;text-align:left;padding:18px 20px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);color:var(--text-2);transition:border-color .2s ease,background-color .2s ease,color .2s ease,transform .2s ease-out;}
.price-switch button:hover{background:var(--glass-strong);color:var(--text-1);}
.price-switch button.active{color:var(--text-1);border-color:rgba(47,180,230,.5);background:linear-gradient(140deg,rgba(47,180,230,.14),rgba(255,255,255,.03));transform:translateY(-1px);}
.price-switch .tier{font-size:16px;font-weight:650;}
.price-switch .tier-note{font-size:12.5px;color:var(--text-3);margin-top:4px;}
.price-panel{display:none;padding:34px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.028));border:1px solid var(--line);box-shadow:var(--shadow-card);}
.price-panel.active{display:block;}
.price-panel .flag{display:inline-block;font-size:12px;padding:4px 12px;border-radius:var(--r-pill);background:rgba(242,178,76,.14);border:1px solid rgba(242,178,76,.4);color:var(--accent);margin-bottom:16px;}
.price-panel h3{font-size:22px;}
.price-panel .amount{margin:16px 0 6px;font-family:var(--font-mono);font-size:32px;font-weight:700;color:var(--text-1);}
.price-panel .amount span{font-size:14px;color:var(--text-3);font-weight:400;margin-left:8px;font-family:var(--font-sans);}
.price-panel .lead{color:var(--text-2);font-size:15px;}
.benefit-list{margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:12px 26px;}
.benefit-list li{position:relative;padding-left:26px;font-size:14.5px;color:var(--text-2);}
.benefit-list li svg{position:absolute;left:0;top:4px;color:var(--brand);}
.price-panel .btn-brand{margin-top:30px;}

/* ---------- FAQ ---------- */
.faq-acc{border-top:1px solid var(--line);}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{background:transparent;color:var(--text-1);font-size:16.5px;font-weight:600;padding:24px 48px 24px 0;box-shadow:none;border-radius:0;}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::after{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v12M2 8h12' stroke='%23A6B8CC' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-size:14px 14px;width:14px;height:14px;transition:transform .25s ease,background-image .25s ease;}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v12M2 8h12' stroke='%232FB4E6' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");}
.faq-acc .accordion-body{padding:0 40px 26px 0;color:var(--text-2);font-size:14.5px;line-height:1.8;}

/* ---------- 联系表单 ---------- */
.contact-card{padding:34px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
.field input,.field textarea{width:100%;padding:13px 16px;border-radius:var(--r-btn);background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);font-size:14.5px;font-family:inherit;outline:none;transition:border-color .2s ease,box-shadow .2s ease;}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,180,230,.14);}
.field textarea{resize:vertical;min-height:112px;}
.field .hint{font-size:12.5px;color:var(--text-3);margin-top:6px;}

/* ---------- 转化带 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;padding:60px 48px;border:1px solid var(--line);background:linear-gradient(120deg,rgba(19,97,168,.34),rgba(12,22,38,.9) 58%),url("/assets/images/backpic/back-2.png") center/cover no-repeat;}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);max-width:640px;}
.cta-band p{margin-top:14px;max-width:600px;color:var(--text-2);font-size:15.5px;}
.cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:100px;border-top:1px solid var(--line);background:rgba(12,22,38,.6);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .brand-text{font-size:17px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:300px;}
.footer-title{font-size:14px;font-weight:650;color:var(--text-1);margin-bottom:18px;}
.footer-list{display:grid;gap:12px;}
.footer-list a{font-size:14px;color:var(--text-2);}
.footer-list a:hover{color:var(--brand);}
.footer-list li{font-size:14px;color:var(--text-2);}
.footer-bottom{margin-top:56px;border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
.footer-bottom .mono{font-family:var(--font-mono);}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:1050;opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .3s ease,transform .3s ease;}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .btn-brand{padding:14px 24px;border-radius:var(--r-pill);box-shadow:0 10px 30px rgba(47,180,230,.3);}
.float-cta.hide{opacity:0;transform:translateY(20px);pointer-events:none;}

/* ---------- Offcanvas ---------- */
.mobile-nav{background:var(--bg-raise);color:var(--text-1);border-left:1px solid var(--line);width:min(340px,88vw);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-nav .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.7;}
.mobile-nav .offcanvas-body{padding:20px;}
.mobile-search{display:flex;align-items:center;gap:8px;padding:6px 6px 6px 14px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--line);margin-bottom:22px;}
.mobile-search input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;color:var(--text-1);font-size:14px;padding:8px 0;}
.mobile-search input::placeholder{color:var(--text-3);}
.mobile-search button{border:0;border-radius:var(--r-pill);padding:8px 14px;font-size:13px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-deep));}
.mobile-links{display:grid;gap:6px;margin-bottom:24px;}
.mobile-links a{padding:13px 16px;border-radius:var(--r-btn);font-size:15px;color:var(--text-2);border:1px solid transparent;}
.mobile-links a:hover{background:var(--glass);color:var(--text-1);}
.mobile-links a.active{background:var(--glass-strong);border-color:rgba(47,180,230,.35);color:var(--text-1);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .review-card{flex:0 0 calc((100% - 22px)/2);}
}
@media (max-width:991px){
  :root{--header-h:120px;--anchor-h:0px;}
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 20px;}
  .brand{order:1;}
  .nav-toggle{display:inline-flex;order:2;margin-left:auto;}
  .nav-links,.nav-cta{display:none;}
  .search-box{order:3;flex-basis:100%;max-width:none;}
  .anchor-bar{position:static;}
  .hero{padding:48px 0 64px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;min-height:0;}
  .hero-float{position:static;width:100%;margin-top:20px;left:0;bottom:0;}
  .sell-grid{grid-template-columns:1fr;}
  .demo-panel{grid-template-columns:1fr;}
  .price-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  section[id]{scroll-margin-top:calc(var(--header-h) + 16px);}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  .stat-bar{grid-template-columns:1fr 1fr;}
  .review-card{flex:0 0 88%;}
  .benefit-list{grid-template-columns:1fr;}
  .cta-band{padding:44px 24px;border-radius:18px;}
  .price-panel{padding:26px 22px;}
  .sell-main{padding:26px 22px;}
  .float-cta{right:0;left:0;bottom:0;padding:0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);}
  .float-cta .btn-brand{width:100%;height:56px;border-radius:0;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding-top:48px;margin-top:64px;}
  .faq-acc .accordion-body{padding-right:0;}
}
@media (max-width:520px){
  .search-box{padding-left:12px;}
  .search-box button{padding:9px 14px;}
  .hero-meta{gap:8px 16px;}
  .stat-item{padding:22px 18px;}
  .stat-num{font-size:28px;}
  .sec-head{margin-bottom:34px;}
}

/* roulang page: category1 */
:root{
  --bg-base:#070E1A;
  --bg-raise:#0C1626;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(122,158,196,.18);
  --brand:#2FB4E6;
  --brand-deep:#1361A8;
  --accent:#F2B24C;
  --text-1:#E9F1FA;
  --text-2:#A6B8CC;
  --text-3:#6E8299;
  --danger:#FF8A8A;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.28);
  --shadow-brand:0 0 0 1px rgba(47,180,230,.35),0 10px 30px rgba(47,180,230,.22);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --bs-body-bg:#070E1A;
  --bs-body-color:#E9F1FA;
  --bs-border-radius:16px;
  --bs-primary:#2FB4E6;
  --bs-link-color:#2FB4E6;
  --bs-link-hover-color:#5FCBF2;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(900px 520px at 6% -8%, rgba(47,180,230,.08), transparent 62%),
    radial-gradient(760px 460px at 104% 10%, rgba(242,178,76,.06), transparent 64%),
    linear-gradient(rgba(122,158,196,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,158,196,.03) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

.container,.container-lg,.container-md,.container-sm{
  width:100%;
  padding-right:20px;
  padding-left:20px;
  margin-right:auto;
  margin-left:auto;
}
@media (min-width:576px){.container,.container-sm{max-width:100%}}
@media (min-width:768px){.container,.container-md{max-width:748px}}
@media (min-width:992px){.container,.container-lg{max-width:1000px}}
@media (min-width:1200px){.container{max-width:1240px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,14,26,.55);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(9,17,31,.88);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:74px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-weight:700;font-size:18px;letter-spacing:.01em}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);
  background:linear-gradient(140deg,rgba(47,180,230,.22),rgba(19,97,168,.35));
  border:1px solid rgba(47,180,230,.34);
  box-shadow:0 0 18px rgba(47,180,230,.18);
}
.brand-text{color:var(--text-1)}
.brand:hover .brand-text{color:var(--brand)}

.nav-search{
  flex:1 1 auto;
  max-width:620px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 6px 6px 16px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search:focus-within{
  border-color:rgba(47,180,230,.6);
  background:rgba(255,255,255,.07);
  box-shadow:0 0 0 4px rgba(47,180,230,.14);
}
.nav-search svg{flex-shrink:0;color:var(--text-3)}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:14.5px;
  padding:8px 0;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search .search-btn{
  flex-shrink:0;
  border:0;
  border-radius:var(--radius-pill);
  padding:8px 18px;
  font-size:14px;
  font-weight:600;
  color:#F3FBFF;
  background:linear-gradient(135deg,#3FC0EF,#1361A8);
  transition:filter .2s ease,transform .2s ease;
}
.nav-search .search-btn:hover{filter:brightness(1.08)}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-shrink:0}
.nav-link{
  padding:8px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:var(--text-2);
  border:1px solid transparent;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text-1);background:var(--glass)}
.nav-link.active{color:var(--brand);background:var(--glass-strong);border-color:rgba(47,180,230,.28)}
.nav-cta{
  margin-left:8px;
  padding:9px 18px;
  border-radius:var(--radius-btn);
  font-size:14.5px;
  font-weight:600;
  color:#F3FBFF;
  background:linear-gradient(135deg,#3FC0EF,#1361A8);
  box-shadow:var(--shadow-brand);
  white-space:nowrap;
}
.nav-cta:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1)}
.mobile-search{display:none;padding:0 0 12px}
.mobile-search .nav-search{max-width:none}

.nav-drawer{
  position:fixed;
  inset:0 0 0 auto;
  width:min(320px,86vw);
  background:rgba(11,20,35,.98);
  backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  transform:translateX(103%);
  transition:transform .28s ease;
  z-index:1060;
  padding:22px 20px 32px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:38px;height:38px;border-radius:11px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text-2);
  font-size:18px;line-height:1;
}
.drawer-close:hover{color:var(--text-1);background:var(--glass-strong)}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  padding:12px 14px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--text-2);
  font-size:15px;
}
.drawer-links a:hover{background:var(--glass);color:var(--text-1)}
.drawer-links a.active{color:var(--brand);background:var(--glass-strong);border-color:rgba(47,180,230,.28)}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(4,9,17,.62);
  opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1050;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}

@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-inner{min-height:66px;gap:14px}
  .nav-search{display:none}
  .mobile-search{display:block}
}
@media (max-width:575.98px){
  .brand{font-size:16.5px}
}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 56px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(112deg, rgba(7,14,26,.95) 6%, rgba(7,14,26,.74) 52%, rgba(7,14,26,.92) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.page-hero .breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:0;
  margin:0 0 18px;
  background:none;
  border-radius:0;
  font-size:13.5px;
  color:var(--text-3);
}
.page-hero .breadcrumb a{color:var(--text-2)}
.page-hero .breadcrumb a:hover{color:var(--brand)}
.page-hero .breadcrumb .sep{color:var(--text-3);opacity:.7}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:.01em;
  max-width:20em;
}
.page-hero .lead{
  margin-top:16px;
  max-width:46em;
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}
.hero-search{
  margin-top:26px;
  display:flex;
  align-items:center;
  gap:10px;
  max-width:560px;
  padding:6px 6px 6px 16px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.hero-search:focus-within{
  border-color:rgba(47,180,230,.6);
  box-shadow:0 0 0 4px rgba(47,180,230,.14);
}
.hero-search svg{flex-shrink:0;color:var(--text-3)}
.hero-search input{
  flex:1 1 auto;
  min-width:0;
  border:0;
  background:transparent;
  outline:none;
  font-size:15px;
  padding:8px 0;
}
.hero-search input::placeholder{color:var(--text-3)}
.hero-search button{
  flex-shrink:0;
  border:0;
  border-radius:var(--radius-pill);
  padding:9px 20px;
  font-size:14.5px;
  font-weight:600;
  color:#F3FBFF;
  background:linear-gradient(135deg,#3FC0EF,#1361A8);
}
.hero-search button:hover{filter:brightness(1.08)}

.stat-bar{
  margin-top:34px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  backdrop-filter:blur(14px);
}
.stat-item{
  background:rgba(12,22,38,.72);
  padding:18px 20px;
}
.stat-item .num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:24px;
  font-weight:600;
  color:var(--accent);
  line-height:1.2;
}
.stat-item .label{
  margin-top:4px;
  font-size:13.5px;
  color:var(--text-2);
}
@media (max-width:767.98px){
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 主体布局 ---------- */
.main-wrap{padding:56px 0 72px}
.layout-row{--bs-gutter-x:28px;--bs-gutter-y:28px}

.side-toc{
  position:sticky;
  top:104px;
}
.toc-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:20px 18px;
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.toc-title{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--text-3);
  margin-bottom:12px;
}
.anchor-inner{display:flex;flex-direction:column;gap:3px}
.anchor-link{
  display:block;
  padding:9px 13px;
  border-radius:12px;
  border:1px solid transparent;
  font-size:14.5px;
  color:var(--text-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-link:hover{color:var(--text-1);background:var(--glass-strong)}
.anchor-link.active{
  color:var(--brand);
  background:rgba(47,180,230,.1);
  border-color:rgba(47,180,230,.3);
}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.7;
}
.toc-note a{color:var(--brand)}
.toc-note a:hover{color:#5FCBF2}

@media (max-width:991.98px){
  .side-toc{position:static;top:auto;margin-bottom:8px}
  .toc-card{padding:16px}
  .anchor-inner{
    flex-direction:row;
    gap:8px;
    overflow-x:auto;
    padding-bottom:6px;
    -webkit-overflow-scrolling:touch;
  }
  .anchor-link{white-space:nowrap;background:var(--glass);border-color:var(--line)}
}

.content-block{
  scroll-margin-top:112px;
  padding-bottom:44px;
  margin-bottom:44px;
  border-bottom:1px solid var(--line);
}
.content-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.content-block h2{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.35;
  margin-bottom:16px;
}
.content-block h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.2em;
  bottom:.2em;
  width:3px;
  border-radius:3px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(47,180,230,.6);
}
.content-block h3{
  font-size:19px;
  font-weight:600;
  margin:26px 0 10px;
}
.content-block p{
  color:var(--text-2);
  font-size:15.5px;
  line-height:1.9;
  margin-bottom:14px;
}
.content-block p strong{color:var(--text-1);font-weight:600}
.content-block a.inline-link{color:var(--brand);border-bottom:1px solid rgba(47,180,230,.4)}
.content-block a.inline-link:hover{color:#5FCBF2;border-bottom-color:#5FCBF2}

.figure{
  margin:22px 0 26px;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
  background:linear-gradient(140deg,rgba(47,180,230,.12),rgba(19,97,168,.16));
}
.figure img{width:100%;height:auto;object-fit:cover;aspect-ratio:16/9}
.figure figcaption{
  padding:10px 16px;
  font-size:13px;
  color:var(--text-3);
  background:rgba(12,22,38,.72);
  border-top:1px solid var(--line);
}
.figure::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:46%;
  background:linear-gradient(180deg,transparent,rgba(7,14,26,.62));
  pointer-events:none;
}

.point-list{display:flex;flex-direction:column;gap:14px;margin:22px 0 6px}
.point-item{
  display:flex;
  gap:16px;
  padding:18px 20px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease,background-color .2s ease;
}
.point-item:hover{
  border-color:rgba(47,180,230,.32);
  background:var(--glass-strong);
  transform:translateY(-2px);
}
.point-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:600;
  color:var(--accent);
  flex-shrink:0;
  padding-top:2px;
}
.point-body h4{
  font-size:16px;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:6px;
}
.point-body p{font-size:14.5px;margin-bottom:0;color:var(--text-2)}

.step-list{
  counter-reset:step;
  display:flex;
  flex-direction:column;
  gap:0;
  margin:22px 0 6px;
  border-left:1px solid var(--line);
  padding-left:26px;
}
.step-item{position:relative;padding:0 0 26px}
.step-item:last-child{padding-bottom:0}
.step-item::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:-40px;
  top:0;
  width:28px;
  height:28px;
  border-radius:9px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:rgba(47,180,230,.12);
  border:1px solid rgba(47,180,230,.32);
}
.step-item h4{font-size:16.5px;font-weight:600;margin-bottom:6px}
.step-item p{font-size:14.5px;margin-bottom:0}

.table-wrap{
  margin:22px 0 8px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow-x:auto;
  background:rgba(12,22,38,.5);
}
table.res-table{
  width:100%;
  min-width:660px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.res-table caption{
  caption-side:top;
  text-align:left;
  padding:14px 18px 0;
  font-size:13px;
  color:var(--text-3);
}
table.res-table th,
table.res-table td{
  padding:14px 18px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
table.res-table thead th{
  font-size:13.5px;
  font-weight:600;
  color:var(--text-1);
  background:rgba(255,255,255,.045);
  white-space:nowrap;
}
table.res-table tbody tr:nth-child(odd){background:rgba(255,255,255,.03)}
table.res-table tbody tr:hover{background:rgba(47,180,230,.07)}
table.res-table tbody tr:last-child td{border-bottom:0}
table.res-table td:first-child{color:var(--text-1);font-weight:600;white-space:nowrap}

.compare-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin:22px 0 6px;
}
.compare-col{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  padding:18px 20px;
}
.compare-col.is-warn{border-color:rgba(255,138,138,.24);background:rgba(255,138,138,.05)}
.compare-col.is-good{border-color:rgba(47,180,230,.28);background:rgba(47,180,230,.07)}
.compare-col h4{font-size:15px;font-weight:600;margin-bottom:12px}
.compare-col.is-warn h4{color:#FFB3B3}
.compare-col.is-good h4{color:var(--brand)}
.compare-col ul li{
  position:relative;
  padding-left:16px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:10px;
}
.compare-col ul li:last-child{margin-bottom:0}
.compare-col ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  border-radius:50%;
  background:currentColor;
  opacity:.6;
}
@media (max-width:767.98px){
  .compare-grid{grid-template-columns:minmax(0,1fr)}
}

/* ---------- FAQ ---------- */
.faq-accordion{margin-top:18px}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  padding:20px 44px 20px 0;
  border-radius:0;
  box-shadow:none;
  transition:color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);
  background:transparent;
  box-shadow:none;
}
.faq-accordion .accordion-button:hover{color:var(--brand)}
.faq-accordion .accordion-button:focus,
.faq-accordion .accordion-button:focus-visible{
  box-shadow:none;
  outline:2px solid var(--brand);
  outline-offset:2px;
}
.faq-accordion .accordion-button::after{
  content:"";
  width:14px;
  height:14px;
  flex:0 0 14px;
  margin-left:auto;
  background-image:linear-gradient(var(--brand),var(--brand)),linear-gradient(var(--brand),var(--brand));
  background-size:100% 2px,2px 100%;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-accordion .accordion-body{
  padding:0 0 20px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:52em;
}

/* ---------- 转化带 ---------- */
.cta-band{
  padding:64px 0;
  border-top:1px solid var(--line);
  background-image:
    radial-gradient(600px 320px at 12% 20%, rgba(47,180,230,.12), transparent 68%),
    radial-gradient(520px 300px at 92% 90%, rgba(242,178,76,.09), transparent 70%),
    linear-gradient(180deg,rgba(12,22,38,.9),rgba(7,14,26,.95));
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:32px 34px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
}
.cta-copy h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin-bottom:10px}
.cta-copy p{color:var(--text-2);font-size:15px;max-width:46em;line-height:1.85}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap}
@media (max-width:991.98px){
  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn.btn-primary{
  color:#F4FBFF;
  background-image:linear-gradient(135deg,#3FC0EF,#1361A8);
  box-shadow:var(--shadow-brand);
}
.btn.btn-primary:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  color:#fff;
  box-shadow:0 0 0 1px rgba(47,180,230,.45),0 14px 34px rgba(47,180,230,.3);
}
.btn.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn.btn-ghost{
  color:var(--text-1);
  background:transparent;
  border-color:var(--line);
}
.btn.btn-ghost:hover{
  background:var(--glass-strong);
  color:var(--brand);
  border-color:rgba(47,180,230,.34);
}
.btn[disabled],.btn.disabled{opacity:.45;box-shadow:none;pointer-events:none}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(9,16,30,.92);
  padding:64px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{
  color:var(--text-2);
  font-size:14px;
  line-height:1.85;
  max-width:28em;
}
.footer-title{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--text-3);
  margin-bottom:14px;
}
.footer-list li{margin-bottom:10px}
.footer-list a,.footer-list li{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.7;
}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13.5px;
  color:var(--text-3);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .site-footer{padding-top:48px}
}

/* ---------- 通用响应式 ---------- */
@media (max-width:991.98px){
  .page-hero{padding:38px 0 42px}
  .main-wrap{padding:40px 0 56px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .content-block{padding-bottom:34px;margin-bottom:34px}
  .content-block p{font-size:15px}
  .point-item{padding:16px}
  .cta-band{padding:48px 0}
  .step-item::before{left:-37px}
}
@media (max-width:480px){
  .container{padding-left:16px;padding-right:16px}
  .hero-search{flex-wrap:wrap;border-radius:16px;padding:12px 12px 12px 14px}
  .hero-search input{width:100%}
  .hero-search button{width:100%}
  .stat-item{padding:14px 16px}
  .stat-item .num{font-size:20px}
}

/* roulang page: article */
:root{
  --bg-base:#070E1A;
  --bg-raise:#0C1626;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(122,158,196,.18);
  --brand:#2FB4E6;
  --brand-deep:#1361A8;
  --accent:#F2B24C;
  --text-1:#E9F1FA;
  --text-2:#A6B8CC;
  --text-3:#6E8299;
  --danger:#FF8A8A;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 8px 24px rgba(0,0,0,.28);
  --container:1200px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --bs-body-bg:#070E1A;
  --bs-body-color:#E9F1FA;
  --bs-border-color:rgba(122,158,196,.18);
  --bs-primary:#2FB4E6;
  --bs-primary-rgb:47,180,230;
  --bs-link-color:#2FB4E6;
  --bs-link-hover-color:#7FD6F7;
  --bs-border-radius:12px;
  --bs-body-font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(circle at 12% 6%, rgba(47,180,230,.08), transparent 42%),
    radial-gradient(circle at 88% 84%, rgba(242,178,76,.06), transparent 42%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:#7FD6F7}
button{font-family:inherit}
::selection{background:rgba(47,180,230,.28);color:#FFFFFF}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04121F;padding:10px 16px;border-radius:0 0 10px 0;z-index:2000;font-size:14px}
.skip-link:focus{left:0}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,14,26,.72);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(9,17,30,.94);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);flex:0 0 auto}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);
  background:linear-gradient(135deg,rgba(47,180,230,.2),rgba(19,97,168,.12));
  border:1px solid rgba(47,180,230,.32);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em}
.nav-search{
  flex:1 1 auto;max-width:620px;min-width:200px;
  display:flex;align-items:center;gap:8px;
  padding:6px 6px 6px 16px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search:focus-within{border-color:rgba(47,180,230,.65);box-shadow:0 0 0 4px rgba(47,180,230,.12);background:rgba(255,255,255,.075)}
.nav-search .search-icon{color:var(--text-3);flex:0 0 auto}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;outline:0;background:transparent;
  color:var(--text-1);font-size:14px;padding:6px 0;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  flex:0 0 auto;border:0;cursor:pointer;
  padding:8px 18px;border-radius:var(--r-pill);
  font-size:13.5px;font-weight:600;color:#04121F;
  background:linear-gradient(135deg,#3BBEF0,#1B79C9);
  transition:filter .2s,transform .2s;
}
.nav-search button:hover{filter:brightness(1.08)}
.nav-search button:active{transform:translateY(1px)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--text-1);background:var(--glass)}
.nav-link.is-active{color:var(--brand)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 10px rgba(47,180,230,.6);
}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border:0;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;color:#04121F;cursor:pointer;
  background:linear-gradient(135deg,#3BBEF0,#1B79C9);
  box-shadow:0 0 0 1px rgba(47,180,230,.35),0 10px 30px rgba(47,180,230,.22);
  transition:transform .2s,filter .2s,box-shadow .2s;
}
.btn-brand:hover{color:#04121F;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,180,230,.5),0 14px 36px rgba(47,180,230,.3)}
.btn-brand:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text-1);
  background:transparent;border:1px solid var(--line);
  transition:background .2s,color .2s,border-color .2s;
}
.btn-ghost:hover{background:var(--glass-strong);color:var(--brand);border-color:rgba(47,180,230,.4)}
.header-cta{flex:0 0 auto;padding:10px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;flex:0 0 auto;
  align-items:center;justify-content:center;cursor:pointer;
  color:var(--text-1);background:var(--glass);border:1px solid var(--line);border-radius:12px;
  transition:background .2s,border-color .2s;
}
.nav-toggle:hover{background:var(--glass-strong);border-color:rgba(47,180,230,.4)}

/* ============ 移动端抽屉 ============ */
.mobile-drawer{
  --bs-offcanvas-width:min(330px,88vw);
  background:rgba(10,18,32,.98);
  color:var(--text-1);
  border-left:1px solid var(--line);
  backdrop-filter:blur(16px);
}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer-title{font-size:16px;font-weight:600;margin:0}
.drawer-close{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--text-2);cursor:pointer;
}
.drawer-close:hover{color:var(--brand);border-color:rgba(47,180,230,.4)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-1);
  border:1px solid transparent;transition:background .2s,border-color .2s,color .2s;
}
.drawer-nav a:hover{background:var(--glass);border-color:var(--line);color:var(--brand)}
.drawer-note{margin-top:20px;font-size:13px;line-height:1.8;color:var(--text-3)}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:40px 0 38px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(7,14,26,.84),rgba(7,14,26,.975)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center 32%;
}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb-nav a{color:var(--text-2)}
.breadcrumb-nav a:hover{color:var(--brand)}
.crumb-sep{color:rgba(110,130,153,.6)}
.crumb-current{max-width:min(560px,60vw);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.article-head{max-width:900px}
.badge-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--brand);
  background:rgba(47,180,230,.1);border:1px solid rgba(47,180,230,.25);
}
.article-title{
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.35;font-weight:700;
  letter-spacing:.01em;
  margin:16px 0 20px;
  color:var(--text-1);
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--text-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .mono{color:var(--text-2)}

/* ============ 布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
  padding:56px 0 72px;
}

/* ============ 正文 ============ */
.article-body{
  min-width:0;max-width:820px;
  font-size:16px;line-height:1.88;color:var(--text-1);
  word-break:break-word;
}
.article-cover{margin:0 0 32px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-raise)}
.article-cover img{width:100%;height:auto;object-fit:cover}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.42;font-weight:700;
  margin:2.1em 0 .8em;padding-left:15px;color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(47,180,230,.65);
}
.article-body h3{font-size:19px;font-weight:600;margin:1.8em 0 .6em;color:var(--text-1)}
.article-body h4{font-size:16.5px;font-weight:600;margin:1.6em 0 .5em;color:var(--text-2)}
.article-body strong{color:#FFFFFF;font-weight:600}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(47,180,230,.45)}
.article-body a:hover{color:#7FD6F7;text-decoration-color:#7FD6F7}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--glass);
  border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body figure{margin:1.7em 0}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:0 auto}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body pre{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow:auto;
  font-size:13.5px;line-height:1.7;color:var(--text-1);
}
.article-body code{
  font-family:var(--mono);font-size:.9em;
  background:rgba(47,180,230,.1);color:#8FD9F5;
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;font-size:1em}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(255,255,255,.035);color:var(--text-2);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-foot{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.empty-state{
  padding:56px 28px;text-align:center;
  background:var(--glass);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-title{font-size:19px;font-weight:600;margin:0 0 20px;color:var(--text-1)}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:100px}
.side-card{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 20px 22px;
  box-shadow:var(--shadow-card);
}
.side-title{
  font-size:13px;font-weight:600;color:var(--text-2);
  letter-spacing:.02em;margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--brand)}
.side-nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:block;padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .2s,color .2s,border-color .2s,padding-left .2s;
}
.side-nav a:hover{background:var(--glass-strong);color:var(--brand);border-left-color:var(--brand);padding-left:16px}
.side-text{font-size:13.5px;line-height:1.8;color:var(--text-3);margin:0 0 16px}
.side-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--brand);
}
.side-link::after{content:"→";transition:transform .2s}
.side-link:hover::after{transform:translateX(2px)}

/* ============ 通用板块 ============ */
.section-head{margin-bottom:32px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);margin-bottom:10px;
}
.section-eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin:0 0 10px;color:var(--text-1)}
.section-head p{margin:0;font-size:14.5px;color:var(--text-2);max-width:640px}

/* ============ 卡片 ============ */
.related-section{padding:8px 0 88px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;color:inherit;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-card:hover{color:inherit;transform:translateY(-2px);border-color:rgba(47,180,230,.3);box-shadow:0 14px 34px rgba(0,0,0,.35)}
.post-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--bg-raise)}
.post-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover img{transform:scale(1.04)}
.post-card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.post-card h3{
  margin:0;font-size:16px;font-weight:600;line-height:1.5;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s;
}
.post-card:hover h3{color:var(--brand)}
.post-card p{
  margin:0;font-size:13.5px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .card-arrow{margin-top:auto;font-size:13px;color:var(--text-3);display:inline-flex;align-items:center;gap:6px}
.post-card .card-arrow span{transition:transform .2s}
.post-card:hover .card-arrow span{transform:translateX(3px)}

/* ============ 转化带 ============ */
.cta-section{padding:0 0 88px}
.cta-band{
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  padding:38px 34px;border:1px solid var(--line);border-radius:20px;
  background:linear-gradient(120deg,rgba(47,180,230,.13),rgba(19,97,168,.08) 46%,rgba(242,178,76,.07));
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin:0 0 10px;color:var(--text-1)}
.cta-band p{margin:0;font-size:14.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(9,17,30,.62);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{margin:0;font-size:13.5px;line-height:1.85;color:var(--text-3);max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-list li{font-size:13.5px;color:var(--text-3)}
.footer-list a{color:var(--text-2);transition:color .2s}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:52px;padding:22px 0 30px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-link{padding:8px 9px;font-size:13.5px}
  .header-cta{padding:10px 16px;font-size:13.5px}
}
@media (max-width:991px){
  .nav-links,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 0;min-height:0}
  .brand{margin-right:auto}
  .nav-search{order:3;flex:1 1 100%;max-width:none;margin-bottom:4px}
  .article-layout{grid-template-columns:1fr;gap:36px;padding:42px 0 56px}
  .article-body{max-width:none}
  .article-side{position:static}
  .article-hero{padding:32px 0 30px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .cta-band{padding:30px 24px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .article-body{font-size:15.5px;line-height:1.85}
  .container{padding:0 16px}
  .article-title{font-size:clamp(23px,6vw,30px)}
  .related-section{padding:4px 0 64px}
  .cta-section{padding:0 0 64px}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:40px}
}
@media (max-width:640px){
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .nav-search{padding-left:14px}
  .nav-search button{padding:8px 14px}
}
@media (max-width:480px){
  .article-meta{flex-direction:column;gap:6px}
  .article-foot{flex-direction:column;align-items:stretch}
  .article-foot .btn-ghost{justify-content:center}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{flex:1 1 auto;justify-content:center}
}

/* roulang page: category2 */
:root{
  --bg-base:#070E1A;
  --bg-raise:#0C1626;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(122,158,196,.18);
  --brand:#2FB4E6;
  --brand-deep:#1361A8;
  --accent:#F2B24C;
  --text-1:#E9F1FA;
  --text-2:#A6B8CC;
  --text-3:#6E8299;
  --danger:#FF8A8A;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-glass:0 8px 24px rgba(0,0,0,.28);
  --shadow-brand:0 0 0 1px rgba(47,180,230,.35), 0 10px 30px rgba(47,180,230,.22);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --bs-body-bg:#070E1A;
  --bs-body-color:#E9F1FA;
  --bs-border-color:rgba(122,158,196,.18);
  --bs-primary:#2FB4E6;
  --bs-primary-rgb:47,180,230;
  --bs-link-color:#2FB4E6;
  --bs-link-hover-color:#7ED3F2;
  --bs-border-radius:12px;
  --bs-font-sans-serif:var(--font-cn);
  --bs-body-font-family:var(--font-cn);
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg-base);
  background-image:
    radial-gradient(900px 620px at 6% -6%, rgba(47,180,230,.08), transparent 62%),
    radial-gradient(820px 620px at 102% 104%, rgba(242,178,76,.06), transparent 64%),
    linear-gradient(rgba(122,158,196,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,158,196,.03) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7ED3F2;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.005em;color:var(--text-1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
::selection{background:rgba(47,180,230,.28);}

.container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease, border-color .28s ease, backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(8,16,28,.82);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.nav-row{display:flex;align-items:center;gap:18px;min-height:74px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#2FB4E6,#1361A8);
  color:#F2FAFF;
  box-shadow:0 0 0 1px rgba(47,180,230,.35), 0 6px 16px rgba(47,180,230,.18);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}

.search-box{position:relative;flex:1 1 auto;max-width:600px;margin:0 auto;display:flex;align-items:center;}
.search-box .search-icon{
  position:absolute;left:15px;top:50%;transform:translateY(-50%);
  color:var(--text-3);pointer-events:none;display:grid;place-items:center;
}
.search-box input{
  width:100%;height:44px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-1);
  padding:0 92px 0 44px;
  font-size:14.5px;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{
  border-color:rgba(47,180,230,.75);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 4px rgba(47,180,230,.14);
}
.search-box .search-btn{
  position:absolute;right:5px;top:50%;transform:translateY(-50%);
  height:34px;padding:0 16px;border:0;border-radius:999px;
  background:linear-gradient(135deg,#2FB4E6,#1361A8);
  color:#F2FAFF;font-size:13.5px;font-weight:600;cursor:pointer;
  transition:filter .2s ease, transform .2s ease;
}
.search-box .search-btn:hover{filter:brightness(1.1);}
.search-box .search-btn:active{transform:translateY(-50%) scale(.97);}

.nav-links{display:flex;align-items:center;gap:2px;flex:0 0 auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);white-space:nowrap;
  transition:color .2s ease, background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:var(--glass);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px rgba(47,180,230,.65);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-weight:600;font-size:14.5px;line-height:1;
  padding:13px 22px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out, box-shadow .2s ease-out, background .2s ease-out, color .2s ease-out, border-color .2s ease-out, filter .2s ease-out;
}
.btn:focus-visible{outline:2px solid rgba(47,180,230,.75);outline-offset:2px;}
.btn-brand{
  background:linear-gradient(135deg,#2FB4E6 0%,#1361A8 100%);
  color:#F2FAFF;
  box-shadow:var(--shadow-brand);
}
.btn-brand:hover{filter:brightness(1.08);transform:translateY(-1px);color:#F2FAFF;box-shadow:0 0 0 1px rgba(47,180,230,.45), 0 14px 34px rgba(47,180,230,.3);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;border-color:var(--line);color:var(--text-1);
}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(47,180,230,.45);color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 16px;font-size:13.5px;}
.nav-cta{flex:0 0 auto;padding:11px 18px;font-size:14px;}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);cursor:pointer;
  transition:background .2s ease, border-color .2s ease;
}
.nav-toggle:hover{background:var(--glass-strong);border-color:rgba(47,180,230,.4);}

.drawer{background:#0A1424;color:var(--text-1);border-right:1px solid var(--line);width:308px;}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer .offcanvas-body{padding:18px 20px 32px;}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}
.drawer-list{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.drawer-list a:hover{background:var(--glass);color:var(--text-1);}
.drawer-list a.active{color:var(--brand);background:rgba(47,180,230,.08);border-color:rgba(47,180,230,.28);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand);letter-spacing:.02em;
  padding:6px 13px;border-radius:999px;
  background:rgba(47,180,230,.09);
  border:1px solid rgba(47,180,230,.24);
  margin-bottom:16px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:15.5px;}

.badge-pill{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;line-height:1.6;
  color:var(--text-2);
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  white-space:nowrap;
}
.badge-pill.is-brand{color:#9ADCF6;background:rgba(47,180,230,.11);border-color:rgba(47,180,230,.3);}
.badge-pill.is-accent{color:#F6D08E;background:rgba(242,178,76,.11);border-color:rgba(242,178,76,.3);}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  position:relative;
}
.link-arrow svg{transition:transform .2s ease-out;}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 页面头部 ---------- */
.page-hero{padding:54px 0 76px;position:relative;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 420px at 78% 12%, rgba(47,180,230,.13), transparent 66%),
    radial-gradient(520px 380px at 8% 96%, rgba(242,178,76,.07), transparent 68%);
  pointer-events:none;
}
.breadcrumb-line{
  position:relative;display:flex;align-items:center;gap:9px;
  font-size:13.5px;color:var(--text-3);margin-bottom:26px;flex-wrap:wrap;
}
.breadcrumb-line a{color:var(--text-3);}
.breadcrumb-line a:hover{color:var(--brand);}
.breadcrumb-line .sep{color:rgba(110,130,153,.6);}
.breadcrumb-line .current{color:var(--text-2);}

.hero-grid{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:52px;align-items:center;
}
.hero-copy h1{font-size:clamp(28px,4vw,44px);margin-bottom:18px;}
.hero-sub{color:var(--text-2);font-size:16px;max-width:600px;margin-bottom:26px;}
.hero-search{margin-bottom:24px;max-width:520px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--text-3);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(47,180,230,.8);flex:0 0 auto;
}

.hero-visual{position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);}
.hero-visual img{width:100%;height:360px;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg, rgba(7,14,26,0) 34%, rgba(7,14,26,.82) 100%);
  pointer-events:none;
}
.hero-float{
  position:absolute;left:20px;bottom:20px;z-index:2;
  display:flex;align-items:center;gap:14px;
  padding:14px 20px;border-radius:14px;
  background:rgba(12,22,38,.68);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-glass);
}
.hero-float-num{font-size:26px;color:var(--accent);font-weight:700;line-height:1;}
.hero-float-title{font-size:14px;font-weight:600;color:var(--text-1);}
.hero-float-desc{font-size:12.5px;color:var(--text-3);}

/* ---------- 筛选条 ---------- */
.filter-bar{padding:0 0 42px;}
.filter-panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 26px 22px;
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
}
.filter-top{display:flex;align-items:baseline;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:18px;}
.filter-top h2{font-size:19px;}
.filter-top p{font-size:13.5px;color:var(--text-3);}
.tag-scroll{display:flex;gap:10px;flex-wrap:wrap;}
.filter-tag{
  padding:9px 18px;border-radius:999px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-2);font-size:14px;cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.filter-tag:hover{background:var(--glass-strong);color:var(--text-1);}
.filter-tag:focus-visible{outline:2px solid rgba(47,180,230,.7);outline-offset:2px;}
.filter-tag.active{
  background:rgba(47,180,230,.13);
  border-color:rgba(47,180,230,.5);
  color:#9ADCF6;
  box-shadow:0 0 0 1px rgba(47,180,230,.2);
}
.filter-tag:active{transform:translateY(1px);}

/* ---------- 开测档期卡（非等宽栅格） ---------- */
.schedule{padding:8px 0 96px;}
.schedule-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:22px;}
.sched-card{
  grid-column:span 2;
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.sched-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,180,230,.36);
  box-shadow:0 14px 30px rgba(0,0,0,.32);
}
.sched-card.is-hidden{display:none;}
.sched-card--wide{grid-column:span 4;flex-direction:row;}
.sched-card--half{grid-column:span 3;}

.sched-media{position:relative;flex:0 0 auto;overflow:hidden;background:#0B1526;}
.sched-media img{width:100%;height:186px;object-fit:cover;transition:transform .4s ease-out;}
.sched-card:hover .sched-media img{transform:scale(1.03);}
.sched-card--wide .sched-media{flex:0 0 45%;}
.sched-card--wide .sched-media img{height:100%;min-height:100%;}
.sched-media .sched-flag{
  position:absolute;left:12px;top:12px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;color:#0A1A28;
  background:linear-gradient(135deg,#F2B24C,#E7A231);
  box-shadow:0 6px 16px rgba(0,0,0,.3);
}

.sched-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.sched-tags{display:flex;flex-wrap:wrap;gap:8px;}
.sched-body h3{font-size:17.5px;line-height:1.5;}
.sched-body p{font-size:14px;color:var(--text-2);line-height:1.75;}
.sched-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--text-3);margin-top:auto;}
.sched-meta span{color:var(--text-2);font-weight:600;margin-right:4px;}
.sched-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);}
.sched-count{font-size:12.5px;color:var(--text-3);}

.schedule-more{display:flex;justify-content:center;margin-top:36px;}

/* ---------- 图文说明区 ---------- */
.insight{background:linear-gradient(180deg,rgba(12,22,38,0) 0%,rgba(12,22,38,.72) 42%,rgba(12,22,38,0) 100%);}
.insight-grid{display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);gap:48px;align-items:center;}
.insight-fig{margin:0;position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);}
.insight-fig img{width:100%;height:400px;object-fit:cover;}
.insight-fig figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 20px;font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,rgba(7,14,26,0) 0%,rgba(7,14,26,.88) 70%);
}
.insight-body h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px;}
.insight-body > p{color:var(--text-2);font-size:15.5px;margin-bottom:26px;}

.check-list{display:flex;flex-direction:column;gap:16px;}
.check-list li{
  display:grid;grid-template-columns:34px 1fr;gap:14px;
  padding:16px 18px;border-radius:14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  transition:border-color .2s ease, background .2s ease;
}
.check-list li:hover{border-color:rgba(47,180,230,.32);background:rgba(255,255,255,.05);}
.check-list .idx{
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--accent);
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(242,178,76,.1);border:1px solid rgba(242,178,76,.28);
}
.check-list h3{font-size:15.5px;margin-bottom:4px;}
.check-list p{font-size:14px;color:var(--text-2);}

/* ---------- 流程 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative;}
.step-card{
  position:relative;padding:26px 22px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.step-card:hover{transform:translateY(-3px);border-color:rgba(47,180,230,.34);}
.step-num{
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--brand);letter-spacing:.06em;margin-bottom:14px;display:block;
}
.step-card h3{font-size:16.5px;margin-bottom:10px;}
.step-card p{font-size:14px;color:var(--text-2);}
.step-card::after{
  content:"";position:absolute;right:-11px;top:50%;width:22px;height:1px;
  background:linear-gradient(90deg,rgba(122,158,196,.5),rgba(122,158,196,0));
}
.step-card:last-child::after{display:none;}

/* ---------- 对比表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:rgba(255,255,255,.022);
}
.cmp-table{width:100%;margin:0;border-collapse:collapse;color:var(--text-1);min-width:720px;}
.cmp-table thead th{
  border:0;padding:17px 20px;
  font-size:13px;font-weight:600;color:var(--text-3);
  letter-spacing:.02em;text-align:left;background:rgba(255,255,255,.028);
  border-bottom:1px solid var(--line);
}
.cmp-table tbody td{
  border:0;padding:18px 20px;font-size:14.5px;color:var(--text-2);
  vertical-align:middle;
}
.cmp-table tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.cmp-table tbody tr:hover{background:rgba(47,180,230,.05);}
.cmp-table tbody td:first-child{color:var(--text-1);font-weight:600;}
.cmp-table .yes{color:#7FD8A6;}
.cmp-table .no{color:#E8A4A4;}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:22px 6px 22px 2px;
  border:0;box-shadow:none;
  transition:color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid rgba(47,180,230,.55);outline-offset:2px;border-radius:8px;}
.faq-accordion .accordion-button::after{
  background-image:none !important;
  content:"";width:14px;height:14px;flex:0 0 14px;
  background:
    linear-gradient(var(--text-3),var(--text-3)) center/14px 1.5px no-repeat,
    linear-gradient(var(--text-3),var(--text-3)) center/1.5px 14px no-repeat;
  transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
  background:
    linear-gradient(var(--brand),var(--brand)) center/14px 1.5px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/1.5px 14px no-repeat;
}
.faq-accordion .accordion-body{
  padding:0 60px 24px 2px;
  font-size:14.5px;color:var(--text-2);line-height:1.85;
}
.faq-accordion .accordion-collapse{border:0;}

/* ---------- CTA / 表单 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid var(--line);
  background:rgba(12,22,38,.72);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:48px;align-items:start;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 320px at 92% 4%, rgba(47,180,230,.14), transparent 66%),
    radial-gradient(420px 300px at 2% 100%, rgba(242,178,76,.08), transparent 70%);
  pointer-events:none;
}
.cta-copy{position:relative;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;margin-bottom:26px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);}
.cta-points svg{flex:0 0 auto;margin-top:5px;color:var(--brand);}

.lead-form{position:relative;display:grid;gap:16px;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:16px;padding:26px;}
.form-label{display:block;font-size:13.5px;font-weight:600;color:var(--text-2);margin-bottom:7px;}
.form-control{
  width:100%;padding:12px 14px;border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text-1);font-size:14.5px;outline:none;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{
  border-color:rgba(47,180,230,.8);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 4px rgba(47,180,230,.14);
}
textarea.form-control{min-height:96px;resize:vertical;}
.form-hint{font-size:12.5px;color:var(--text-3);}
.form-error{display:none;font-size:12.5px;color:var(--danger);margin-top:6px;}
.lead-form .btn{width:100%;}
.lead-form .btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;filter:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:rgba(8,15,26,.72);
  padding:64px 0 30px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:330px;}
.footer-title{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-list li{font-size:14px;color:var(--text-3);}
.footer-list a{color:var(--text-2);font-size:14px;}
.footer-list a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links .nav-link{padding:8px 9px;font-size:14px;}
  .hero-grid{gap:38px;}
}

@media (max-width:991.98px){
  .nav-row{flex-wrap:wrap;padding:10px 0 12px;gap:12px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-row > .search-box{order:3;flex:0 0 100%;max-width:none;margin:6px 0 0;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual img{height:300px;}
  .insight-grid{grid-template-columns:1fr;gap:32px;}
  .insight-fig img{height:320px;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-card::after{display:none;}
  .cta-panel{grid-template-columns:1fr;gap:34px;padding:36px 28px;}
  .schedule-grid{grid-template-columns:repeat(4,minmax(0,1fr));}
  .sched-card{grid-column:span 2;}
  .sched-card--wide{grid-column:span 4;flex-direction:row;}
  .sched-card--half{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
}

@media (max-width:767.98px){
  body{font-size:15px;}
  .section{padding:52px 0;}
  .page-hero{padding:34px 0 48px;}
  .schedule-grid{grid-template-columns:1fr;gap:18px;}
  .sched-card,.sched-card--wide,.sched-card--half{grid-column:span 1;flex-direction:column;}
  .sched-card--wide .sched-media{flex:0 0 auto;}
  .sched-card--wide .sched-media img{height:190px;min-height:0;}
  .sched-media img{height:178px;}
  .steps-grid{grid-template-columns:1fr;}
  .filter-panel{padding:20px 18px 18px;}
  .tag-scroll{gap:8px;}
  .filter-tag{padding:8px 14px;font-size:13.5px;}
  .hero-visual img{height:240px;}
  .insight-fig img{height:240px;}
  .cta-panel{padding:28px 20px;border-radius:16px;}
  .lead-form{padding:20px;}
  .faq-accordion .accordion-button{font-size:15px;padding:18px 4px;}
  .faq-accordion .accordion-body{padding:0 20px 20px 4px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{margin-top:60px;padding-top:44px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px;}
  .search-box input{height:42px;padding-right:82px;font-size:14px;}
  .search-box .search-btn{height:32px;padding:0 13px;font-size:13px;}
  .hero-meta{flex-direction:column;gap:8px;}
  .badge-pill{font-size:12px;}
}