/* roulang page: index */
:root{
  --bg:#050a14;
  --bg-2:#081120;
  --bg-3:#0b1729;
  --panel:rgba(16,28,50,.72);
  --panel-solid:#0f1c33;
  --line:rgba(120,170,255,.14);
  --line-2:rgba(120,190,255,.34);
  --text:#eaf1ff;
  --text-2:#a9bbd8;
  --text-3:#7b8fae;
  --accent:#3ea6ff;
  --accent-2:#33e1e8;
  --accent-soft:rgba(62,166,255,.12);
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 20px 44px -26px rgba(0,0,0,.92);
  --shadow-hover:0 28px 62px -26px rgba(20,100,190,.55);
  --glow:0 14px 34px -14px rgba(62,166,255,.75);
  --container:1180px;
  --ease:.22s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  background:
    radial-gradient(900px 620px at 8% -6%,rgba(62,166,255,.18),transparent 62%),
    radial-gradient(760px 520px at 96% 4%,rgba(51,225,232,.10),transparent 60%),
    linear-gradient(180deg,#050a14 0%,#07101f 44%,#050a14 100%);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.34;letter-spacing:.005em}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0;position:relative}
.section-alt{
  background:linear-gradient(180deg,rgba(9,18,34,.92),rgba(6,12,24,.86));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{max-width:780px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
  text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.section-head h2{font-size:clamp(23px,2.6vw,31px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
.split-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.split-head .section-head{margin-bottom:0}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(6,13,26,.42);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid rgba(120,170,255,.10);
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
  background:rgba(5,11,22,.94);
  box-shadow:0 16px 36px -24px #000;
  border-bottom-color:rgba(120,170,255,.24);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:#fff}
.brand-badge{
  width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
  background:linear-gradient(135deg,rgba(62,166,255,.95),rgba(51,225,232,.9));
  color:#04101f;font-size:15px;font-weight:800;
  box-shadow:0 10px 24px -12px rgba(62,166,255,.95);
}
.brand:hover .brand-badge{transform:translateY(-1px)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 15px;border-radius:8px;font-size:15px;color:var(--text-2)}
.nav-link:hover{color:#fff;background:rgba(62,166,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  box-shadow:0 0 12px rgba(62,166,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid rgba(120,170,255,.28);background:rgba(62,166,255,.08);
  cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#cfe3ff;transition:.25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ===== 按钮 ===== */
.btn-glow,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:9px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;min-height:44px;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-glow{
  background:linear-gradient(135deg,#3ea6ff,#2ad2e0);
  color:#03101f;
  box-shadow:0 14px 32px -16px rgba(62,166,255,.95),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 20px 42px -16px rgba(62,166,255,1);color:#03101f}
.btn-glow:active{transform:translateY(0)}
.btn-line{background:rgba(255,255,255,.03);border-color:rgba(120,170,255,.32);color:var(--text)}
.btn-line:hover{background:rgba(62,166,255,.14);border-color:var(--line-2);transform:translateY(-2px);color:#fff}
.btn-mini{padding:9px 17px;font-size:14px;min-height:38px;border-radius:8px}

/* ===== Hero ===== */
.hero{position:relative;padding:132px 0 78px;overflow:hidden;isolation:isolate}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  filter:brightness(.56) saturate(118%);
}
.hero-veil{
  position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg,rgba(5,10,20,.60) 0%,rgba(5,10,20,.88) 58%,var(--bg) 100%),
    radial-gradient(720px 440px at 78% 26%,rgba(62,166,255,.26),transparent 72%);
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:6px 15px;border-radius:999px;
  font-size:13px;color:#bfe4ff;background:rgba(62,166,255,.12);
  border:1px solid rgba(62,166,255,.36);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#33e1e8;box-shadow:0 0 0 4px rgba(51,225,232,.18);animation:breath 2.4s infinite}
@keyframes breath{0%,100%{opacity:1}50%{opacity:.32}}
.hero h1{
  font-size:clamp(30px,4vw,44px);line-height:1.28;margin:20px 0 18px;font-weight:800;
  background:linear-gradient(100deg,#ffffff 0%,#c3ddff 58%,#8fe9f2 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  -webkit-text-fill-color:transparent;
}
.hero-lead{color:#b7c9e4;font-size:16px;line-height:1.86;max-width:640px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags li{
  padding:6px 14px;border-radius:999px;font-size:13px;color:#a9c6ea;
  background:rgba(255,255,255,.04);border:1px solid rgba(120,170,255,.22);
}
.hero-poster{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid rgba(120,190,255,.30);
  box-shadow:0 44px 90px -46px rgba(0,0,0,.96),0 0 0 1px rgba(62,166,255,.14);
  transform:perspective(1200px) rotateY(-6deg) rotateX(2deg);
}
.hero-poster img{width:100%;aspect-ratio:4/5;object-fit:cover}
.poster-meta{
  position:absolute;left:0;right:0;bottom:0;padding:26px 20px 18px;
  background:linear-gradient(180deg,transparent,rgba(4,10,20,.92));
  display:flex;flex-direction:column;gap:2px;
}
.poster-meta strong{font-size:17px;color:#fff}
.poster-meta span{font-size:12.5px;color:var(--text-3);letter-spacing:.05em}

/* ===== 指标看板 ===== */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
  padding:24px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.stat-num{
  font-size:34px;font-weight:800;line-height:1.1;margin-bottom:6px;
  background:linear-gradient(135deg,#eaf1ff,#4fc8ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:2px}
.stat-label{font-size:14px;color:var(--text-2)}
.stat-note{font-size:12.5px;color:var(--text-3);margin-top:8px}

/* ===== 通用卡片 ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.glass-card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:24px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover);background:rgba(20,34,60,.82)}
.card-icon{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.28);color:#7fd0ff;
}
.card-icon svg{width:21px;height:21px}
.glass-card h3{font-size:18px}
.glass-card p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.78}
.card-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--accent-2);
}
.card-link .arrow{transition:transform var(--ease)}
.glass-card:hover .card-link .arrow{transform:translateX(4px)}
.tag-pill{
  display:inline-block;padding:4px 11px;border-radius:999px;font-size:12.5px;
  color:#9fc7f0;background:rgba(62,166,255,.10);border:1px solid rgba(120,170,255,.22);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}

/* ===== 玩法卡片 ===== */
.play-card{
  border-radius:var(--radius);overflow:hidden;background:var(--panel);
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  display:flex;flex-direction:column;
}
.play-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.play-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#0a1424}
.play-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.play-card:hover .play-media img{transform:scale(1.05)}
.play-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,10,20,.75))}
.play-rank{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(5,12,24,.72);border:1px solid rgba(120,190,255,.32);color:#bfe4ff;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.play-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.play-body h3{font-size:17px}
.play-body p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75}

/* ===== 进阶阶梯 ===== */
.ladder{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ladder-card{
  padding:26px 22px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(20,36,64,.86),rgba(11,23,41,.9));
  border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.ladder-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.ladder-step{font-size:12.5px;letter-spacing:.14em;color:var(--accent-2);font-weight:600;margin-bottom:10px}
.ladder-card h3{font-size:18px;margin-bottom:10px}
.ladder-card p{font-size:14px;color:var(--text-2);margin:0 0 18px;line-height:1.75}
.progress{height:6px;border-radius:99px;background:rgba(120,170,255,.14);overflow:hidden}
.progress span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 14px rgba(62,166,255,.8)}
.progress-meta{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text-3);margin-top:8px}

/* ===== 对比表 ===== */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
.compare{width:100%;min-width:620px;border-collapse:separate;border-spacing:0;background:var(--panel);font-size:15px}
.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{background:rgba(62,166,255,.10);color:#dcecff;font-size:14px;font-weight:600;letter-spacing:.03em}
.compare tbody tr:last-child td{border-bottom:none}
.compare td:first-child{color:var(--text-2);width:22%;font-size:14.5px}
.compare .good{color:#8ef0d0}
.compare .plain{color:#9fb2cc}
.compare tbody tr:hover td{background:rgba(62,166,255,.05)}

/* ===== 时间线 ===== */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,rgba(62,166,255,.75),rgba(51,225,232,.28),transparent)}
.timeline-item{position:relative;padding:0 0 26px 6px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-26px;top:8px;width:12px;height:12px;border-radius:50%;
  background:#0b1729;border:2px solid var(--accent);box-shadow:0 0 14px rgba(62,166,255,.85);
}
.timeline-time{font-size:13px;color:var(--accent-2);font-weight:600;letter-spacing:.04em;margin-bottom:4px}
.timeline-item h3{font-size:16.5px;margin-bottom:6px}
.timeline-item p{font-size:14px;color:var(--text-2);margin:0}

/* ===== 评价墙 ===== */
.quote-card{padding:24px;border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}
.quote-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.quote-card blockquote{margin:0;font-size:14.5px;color:#c8d8ef;line-height:1.82}
.quote-user{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;color:#03101f;background:linear-gradient(135deg,#7fd0ff,#33e1e8)}
.quote-user strong{display:block;font-size:14px}
.quote-user span{display:block;font-size:12.5px;color:var(--text-3)}
.stars{color:#ffcf6b;font-size:13px;letter-spacing:2px}

/* ===== 保障条 ===== */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.guard{
  display:flex;gap:14px;align-items:flex-start;padding:20px;
  border-radius:var(--radius);background:rgba(16,28,50,.6);
  border:1px solid var(--line);transition:border-color var(--ease),transform var(--ease);
}
.guard:hover{border-color:var(--line-2);transform:translateY(-3px)}
.guard svg{width:24px;height:24px;flex:0 0 24px;color:var(--accent-2);margin-top:2px}
.guard strong{display:block;font-size:15px;margin-bottom:4px}
.guard p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.7}

/* ===== 场景图文 ===== */
.scene{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center}
.scene-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--shadow)}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.scene-list{display:grid;gap:14px;margin-top:22px}
.scene-item{display:flex;gap:14px;padding:16px 18px;border-radius:var(--radius-sm);background:rgba(16,28,50,.55);border:1px solid var(--line);transition:border-color var(--ease),transform var(--ease)}
.scene-item:hover{border-color:var(--line-2);transform:translateX(4px)}
.scene-index{font-size:13px;font-weight:700;color:var(--accent-2);letter-spacing:.08em;flex:0 0 30px;padding-top:2px}
.scene-item h3{font-size:15.5px;margin-bottom:4px}
.scene-item p{font-size:13.8px;color:var(--text-2);margin:0;line-height:1.7}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{
  position:relative;padding:26px 22px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.step-num{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:15px;font-weight:800;color:#03101f;margin-bottom:14px;
  background:linear-gradient(135deg,#3ea6ff,#33e1e8);box-shadow:0 10px 24px -14px rgba(62,166,255,.95);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);margin:0;line-height:1.76}

/* ===== 资讯列表 ===== */
.news-layout{display:grid;grid-template-columns:1.5fr .9fr;gap:28px;align-items:start}
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:150px 1fr;gap:18px;
  padding:16px;border-radius:var(--radius);
  background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.news-item:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-hover);background:rgba(20,34,60,.82)}
.news-thumb{border-radius:10px;overflow:hidden;background:#0a1424}
.news-thumb img{width:100%;height:100%;min-height:96px;object-fit:cover;transition:transform .4s ease}
.news-item:hover .news-thumb img{transform:scale(1.05)}
.news-body{display:flex;flex-direction:column;gap:7px;min-width:0}
.news-body h3{font-size:16px;line-height:1.5}
.news-body p{font-size:13.8px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--text-3);margin-top:2px}
.empty-tip{padding:26px;border-radius:var(--radius);border:1px dashed rgba(120,170,255,.3);color:var(--text-3);text-align:center;background:rgba(16,28,50,.45)}
.side-panel{
  padding:24px;border-radius:var(--radius);background:rgba(16,28,50,.72);
  border:1px solid var(--line);box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.side-panel h3{font-size:17px;margin-bottom:12px}
.side-panel p{font-size:13.8px;color:var(--text-2);margin-bottom:16px}
.side-list{display:grid;gap:10px;margin-bottom:18px}
.side-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2)}
.side-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px rgba(51,225,232,.8);flex:0 0 6px}

/* ===== 快速解答 ===== */
.faq{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq details{
  border-radius:var(--radius);background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq details[open]{border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 52px 18px 22px;position:relative;
  font-size:15.8px;font-weight:600;color:#e4eefc;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--accent-2);border-bottom:2px solid var(--accent-2);
  transform:translateY(-70%) rotate(45deg);transition:transform var(--ease);
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq .faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.82}

/* ===== 收口表单 ===== */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid rgba(120,190,255,.30);
  background:linear-gradient(135deg,rgba(16,32,58,.94),rgba(9,18,34,.94));
  box-shadow:0 40px 80px -50px rgba(0,0,0,.95);
  padding:44px;
}
.cta-panel::before{
  content:"";position:absolute;top:-120px;right:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(62,166,255,.34),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.cta-copy h2{font-size:clamp(22px,2.4vw,29px);margin-bottom:14px}
.cta-copy p{font-size:15px;color:var(--text-2);margin-bottom:20px}
.cta-facts{display:grid;gap:10px}
.cta-facts li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start}
.cta-facts li::before{content:"";width:16px;height:16px;flex:0 0 16px;margin-top:4px;border-radius:5px;background:rgba(51,225,232,.18);border:1px solid rgba(51,225,232,.5)}
.need-form{display:grid;gap:16px}
.field{display:grid;gap:7px}
.field label{font-size:13.5px;color:var(--text-2);font-weight:600}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;font-size:14.5px;color:var(--text);
  background:rgba(8,17,32,.85);border:1px solid rgba(120,170,255,.24);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
  font-family:inherit;
}
.field input::placeholder,.field textarea::placeholder{color:#6b7f9e}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:rgba(10,22,42,.95);
  box-shadow:0 0 0 3px rgba(62,166,255,.18);
}
.field textarea{resize:vertical;min-height:96px}
.form-tip{font-size:13.5px;color:var(--accent-2);min-height:20px}
.form-tip.ok{color:#8ef0d0}

/* ===== 页脚 ===== */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,12,24,.6),rgba(4,8,16,.96));
  padding:56px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:34px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;margin-bottom:14px}
.footer-brand .brand-badge{width:30px;height:30px;font-size:14px}
.footer-about p{font-size:14px;color:var(--text-3);max-width:360px;line-height:1.8}
.footer-col h3{font-size:14.5px;margin-bottom:14px;color:#dbe8fb}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14px;color:var(--text-3)}
.footer-links a:hover{color:var(--accent-2)}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--accent-2)}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:38px}
  .hero-poster{max-width:460px;transform:none}
  .hero{padding-top:118px}
  .stat-grid,.guard-grid{grid-template-columns:repeat(2,1fr)}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .ladder,.steps{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:30px}
  .news-layout{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:12px 18px 18px;
    background:rgba(5,11,22,.98);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 44px -28px #000;
  }
  .main-nav.is-open{display:flex}
  .nav-link{padding:12px 12px;font-size:15px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(62,166,255,.14)}
  .header-actions .btn-glow{display:none}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero{padding:106px 0 58px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .stat-grid,.guard-grid{grid-template-columns:1fr 1fr}
  .hero-lead{font-size:15px}
  .news-item{grid-template-columns:1fr}
  .news-thumb img{min-height:0;aspect-ratio:16/9}
  .cta-panel{padding:28px 22px}
  .compare th,.compare td{padding:13px 14px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .stat-grid,.guard-grid{grid-template-columns:1fr}
  .hero-actions .btn-glow,.hero-actions .btn-line{width:100%}
  .brand{font-size:16px}
  .section-head h2{font-size:22px}
  .split-head{gap:16px}
  .faq summary{padding:16px 46px 16px 18px;font-size:15px}
  .faq .faq-body{padding:0 18px 18px}
  .timeline{padding-left:24px}
}

/* roulang page: article */
:root{
 --bg:#050a14;
 --bg-2:#081120;
 --bg-3:#0b1729;
 --panel:rgba(16,28,50,.72);
 --panel-solid:#0f1c33;
 --line:rgba(120,170,255,.14);
 --line-2:rgba(120,190,255,.34);
 --text:#eaf1ff;
 --text-2:#a9bbd8;
 --text-3:#7b8fae;
 --accent:#3ea6ff;
 --accent-2:#33e1e8;
 --accent-soft:rgba(62,166,255,.12);
 --radius-lg:20px;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 20px 44px -26px rgba(0,0,0,.92);
 --shadow-hover:0 28px 62px -26px rgba(20,100,190,.55);
 --glow:0 14px 34px -14px rgba(62,166,255,.75);
 --container:1180px;
 --ease:.22s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 color:var(--text);
 font-size:16px;
 line-height:1.78;
 background:
 radial-gradient(900px 620px at 8% -6%,rgba(62,166,255,.18),transparent 62%),
 radial-gradient(760px 520px at 96% 4%,rgba(51,225,232,.10),transparent 60%),
 linear-gradient(180deg,#050a14 0%,#07101f 44%,#050a14 100%);
 overflow-x:hidden;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
 outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px;
}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.35;font-weight:700;letter-spacing:.01em}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 14px;padding-left:20px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0;position:relative}
.section-alt{
 background:linear-gradient(180deg,rgba(9,18,34,.92),rgba(6,12,24,.86));
 border-top:1px solid var(--line);
 border-bottom:1px solid var(--line);
}
.section-head{max-width:780px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
 text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.section-head h2{font-size:clamp(23px,2.6vw,31px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
/* ===== 顶部导航 ===== */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1000;
 background:rgba(6,13,26,.42);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 backdrop-filter:blur(18px) saturate(150%);
 border-bottom:1px solid rgba(120,170,255,.10);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(5,11,22,.94);
 box-shadow:0 16px 36px -24px #000;
 border-bottom-color:rgba(120,170,255,.24);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:#fff}
.brand-badge{
 width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
 background:linear-gradient(135deg,rgba(62,166,255,.95),rgba(51,225,232,.9));
 color:#04101f;font-size:15px;font-weight:800;
 box-shadow:0 10px 24px -12px rgba(62,166,255,.95);
 transition:transform var(--ease);
}
.brand:hover .brand-badge{transform:translateY(-1px)}
.brand-name{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 15px;border-radius:8px;font-size:15px;color:var(--text-2)}
.nav-link:hover{color:#fff;background:rgba(62,166,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
 content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),var(--accent-2));
 box-shadow:0 0 12px rgba(62,166,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
 display:none;width:44px;height:44px;border-radius:10px;
 border:1px solid rgba(120,170,255,.28);background:rgba(62,166,255,.08);
 cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#cfe3ff;transition:.25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* ===== 按钮 ===== */
.btn-glow,.btn-line{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;min-height:44px;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-glow{
 background:linear-gradient(135deg,#3ea6ff,#2ad2e0);
 color:#03101f;
 box-shadow:0 14px 32px -16px rgba(62,166,255,.95),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 20px 42px -16px rgba(62,166,255,1);color:#03101f}
.btn-glow:active{transform:translateY(0)}
.btn-line{background:rgba(255,255,255,.03);border-color:rgba(120,170,255,.32);color:var(--text)}
.btn-line:hover{background:rgba(62,166,255,.14);border-color:var(--line-2);transform:translateY(-2px);color:#fff}
.btn-mini{padding:9px 17px;font-size:14px;min-height:38px;border-radius:8px}
/* ===== 文章首屏 ===== */
.article-hero{
 position:relative;padding:126px 0 62px;overflow:hidden;isolation:isolate;
}
.article-hero-bg{
 position:absolute;inset:0;z-index:-2;
 background-image:url('/assets/images/backpic/back-2.webp');
 background-size:cover;background-position:center;
 filter:brightness(.5) saturate(115%);
}
.article-hero-veil{
 position:absolute;inset:0;z-index:-1;
 background:
 linear-gradient(180deg,rgba(5,10,20,.72) 0%,rgba(5,10,20,.9) 62%,var(--bg) 100%),
 radial-gradient(700px 420px at 80% 24%,rgba(62,166,255,.22),transparent 72%);
}
.article-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:#cfe3ff}
.crumb a:hover{color:var(--accent-2)}
.crumb .sep{color:rgba(120,170,255,.4)}
.crumb .current{color:var(--text-2)}
.article-hero h1{
 font-size:clamp(26px,3.4vw,40px);line-height:1.32;margin-bottom:16px;letter-spacing:.01em;
}
.article-lead{color:var(--text-2);font-size:16px;line-height:1.82;max-width:640px;margin-bottom:22px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:20px}
.tag-pill{
 display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
 font-size:13px;color:#bfe4ff;background:rgba(62,166,255,.12);
 border:1px solid rgba(62,166,255,.32);white-space:nowrap;
}
.tag-pill.solid{background:linear-gradient(135deg,rgba(62,166,255,.9),rgba(51,225,232,.85));color:#04101f;border-color:transparent;font-weight:600}
.meta-item{font-size:13.5px;color:var(--text-3)}
.meta-item b{color:var(--text-2);font-weight:600}
.hero-cover{
 border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-2);
 box-shadow:0 30px 70px -34px rgba(20,100,190,.7);
 position:relative;
}
.hero-cover img{width:100%;height:320px;object-fit:cover}
.hero-cover::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(5,10,20,.04) 30%,rgba(5,10,20,.72) 100%);
 pointer-events:none;
}
.hero-cover-cap{
 position:absolute;left:0;right:0;bottom:0;z-index:2;padding:16px 20px;
 font-size:13.5px;color:#dbe9ff;letter-spacing:.02em;
}
/* ===== 正文布局 ===== */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:36px;align-items:start}
.paper{
 background:var(--panel);
 border:1px solid var(--line);
 border-radius:var(--radius-lg);
 box-shadow:var(--shadow);
 padding:34px 36px;
 -webkit-backdrop-filter:blur(12px);
 backdrop-filter:blur(12px);
}
.article-content{font-size:16px;line-height:1.85;color:#dbe6f7;word-break:break-word}
.article-content h2{
 font-size:22px;margin:34px 0 14px;padding-left:14px;position:relative;color:#fff;
}
.article-content h2:first-child{margin-top:0}
.article-content h2::before{
 content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
 background:linear-gradient(180deg,var(--accent),var(--accent-2));
 box-shadow:0 0 14px rgba(62,166,255,.6);
}
.article-content h3{font-size:18px;margin:26px 0 10px;color:#eaf4ff}
.article-content p{margin:0 0 16px;color:#cddcf0}
.article-content ul,.article-content ol{margin:0 0 18px;padding-left:22px;color:#cddcf0}
.article-content li{margin-bottom:8px}
.article-content li::marker{color:var(--accent)}
.article-content a{color:var(--accent-2);border-bottom:1px dashed rgba(51,225,232,.5)}
.article-content a:hover{color:#fff;border-bottom-color:#fff}
.article-content img{border-radius:var(--radius);margin:20px 0;border:1px solid var(--line);box-shadow:var(--shadow)}
.article-content blockquote{
 margin:20px 0;padding:16px 20px;border-left:3px solid var(--accent);
 background:rgba(62,166,255,.08);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#c8dcf5;
}
.article-content table{
 width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;
 border-radius:var(--radius-sm);overflow:hidden;
}
.article-content th,.article-content td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-content th{background:rgba(62,166,255,.12);color:#e6f2ff;font-weight:600}
.article-content tr:nth-child(even) td{background:rgba(255,255,255,.02)}
.article-content strong{color:#fff;font-weight:700}
.article-content hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.empty-box{
 text-align:center;padding:52px 20px;border:1px dashed var(--line-2);border-radius:var(--radius);
 background:rgba(62,166,255,.05);
}
.empty-box h2{font-size:20px;margin-bottom:10px}
.empty-box p{color:var(--text-2);margin-bottom:20px}
/* ===== 侧栏 ===== */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.side-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 22px 20px;box-shadow:var(--shadow);
 -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.side-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.side-card h3{font-size:15.5px;margin-bottom:14px;display:flex;align-items:center;gap:8px;color:#fff}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px var(--accent-2)}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{
 position:relative;padding-left:16px;margin-bottom:10px;font-size:14px;color:var(--text-2);line-height:1.72;
}
.side-list li:last-child{margin-bottom:0}
.side-list li::before{
 content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
 background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.side-cta{background:linear-gradient(160deg,rgba(62,166,255,.16),rgba(51,225,232,.06));border-color:rgba(62,166,255,.34)}
.side-cta p{font-size:14px;color:var(--text-2);margin-bottom:16px}
.side-cta .btn-glow{width:100%}
/* ===== 卡片网格 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.info-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);position:relative;overflow:hidden;
 -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.info-card::before{
 content:"";position:absolute;top:0;left:0;right:0;height:2px;
 background:linear-gradient(90deg,var(--accent),var(--accent-2));
 opacity:0;transition:opacity var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.info-card:hover::before{opacity:1}
.card-icon{
 width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
 background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.3);
 margin-bottom:16px;
}
.card-icon svg{width:20px;height:20px;stroke:var(--accent-2);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.info-card h3{font-size:17px;margin-bottom:10px}
.info-card p{font-size:14.5px;color:var(--text-2);line-height:1.76;margin-bottom:14px}
.card-tag{
 display:inline-block;font-size:12.5px;color:#a9d8ff;padding:3px 10px;border-radius:999px;
 background:rgba(62,166,255,.1);border:1px solid rgba(62,166,255,.26);
}
/* ===== 数据条 ===== */
.metric-strip{
 display:grid;grid-template-columns:repeat(4,1fr);gap:0;
 background:linear-gradient(150deg,rgba(16,28,50,.9),rgba(9,18,34,.72));
 border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow);overflow:hidden;
}
.metric{padding:28px 24px;border-right:1px solid var(--line);text-align:left}
.metric:last-child{border-right:0}
.metric-num{
 font-size:30px;font-weight:800;letter-spacing:.01em;
 background:linear-gradient(135deg,#8fd0ff,#33e1e8);
 -webkit-background-clip:text;background-clip:text;color:transparent;
 line-height:1.2;margin-bottom:6px;
}
.metric-label{font-size:14px;color:var(--text-2)}
/* ===== 对照 ===== */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-col{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-col:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.compare-col h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.compare-col h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(62,166,255,.9)}
.compare-col.alt h3 .dot{background:var(--accent-2);box-shadow:0 0 12px rgba(51,225,232,.9)}
.tick-list{list-style:none;padding:0;margin:0}
.tick-list li{
 position:relative;padding-left:24px;margin-bottom:12px;font-size:14.5px;color:var(--text-2);line-height:1.75;
}
.tick-list li:last-child{margin-bottom:0}
.tick-list li::before{
 content:"";position:absolute;left:0;top:8px;width:12px;height:12px;border-radius:4px;
 background:rgba(62,166,255,.16);border:1px solid rgba(62,166,255,.5);
}
/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);position:relative;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.step-no{
 font-size:13px;font-weight:700;color:#04101f;width:30px;height:30px;border-radius:9px;
 display:grid;place-items:center;margin-bottom:14px;
 background:linear-gradient(135deg,var(--accent),var(--accent-2));
 box-shadow:0 10px 22px -12px rgba(62,166,255,.95);
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--text-2);margin:0}
/* ===== 分类频道 ===== */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.channel-card{
 display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow);position:relative;overflow:hidden;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.channel-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.channel-card h3{font-size:17px;margin-bottom:8px;color:#fff}
.channel-card p{font-size:14px;color:var(--text-2);margin-bottom:16px}
.channel-more{font-size:13.5px;color:var(--accent-2);display:inline-flex;align-items:center;gap:6px;font-weight:600}
.channel-card:hover .channel-more{color:#fff}
/* ===== 提示条 ===== */
.notice-band{
 display:flex;align-items:flex-start;gap:18px;
 background:linear-gradient(120deg,rgba(62,166,255,.14),rgba(51,225,232,.05));
 border:1px solid rgba(62,166,255,.32);border-radius:var(--radius-lg);
 padding:26px 28px;box-shadow:var(--shadow);
}
.notice-band .notice-mark{
 flex:0 0 auto;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
 background:rgba(62,166,255,.18);border:1px solid rgba(62,166,255,.4);
}
.notice-band .notice-mark svg{width:22px;height:22px;stroke:var(--accent-2);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.notice-band h2{font-size:19px;margin-bottom:8px}
.notice-band p{font-size:14.5px;color:var(--text-2);margin:0}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 24px;box-shadow:var(--shadow);
 transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.faq-item:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.faq-item h3{font-size:16px;margin-bottom:8px;color:#fff;display:flex;gap:10px;align-items:flex-start}
.faq-item h3::before{content:"问";flex:0 0 auto;font-size:12px;color:#04101f;background:linear-gradient(135deg,var(--accent),var(--accent-2));border-radius:6px;padding:1px 7px;margin-top:2px;font-weight:700}
.faq-item p{font-size:14.5px;color:var(--text-2);margin:0;padding-left:34px}
/* ===== 表单 ===== */
.need-panel{
 display:grid;grid-template-columns:.95fr 1.05fr;gap:32px;align-items:center;
 background:linear-gradient(150deg,rgba(16,28,50,.92),rgba(8,17,32,.86));
 border:1px solid var(--line-2);border-radius:var(--radius-lg);
 padding:38px;box-shadow:0 30px 70px -40px rgba(20,100,190,.8);
}
.need-panel h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.need-panel p{color:var(--text-2);font-size:14.5px;margin-bottom:18px}
.need-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px}
.need-points li{
 font-size:13px;color:#bfe4ff;padding:5px 13px;border-radius:999px;
 background:rgba(62,166,255,.1);border:1px solid rgba(62,166,255,.28);
}
.need-form{display:grid;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;color:var(--text-2)}
.field input,.field textarea,.field select{
 width:100%;padding:12px 14px;border-radius:9px;font-size:14.5px;
 background:rgba(5,11,22,.72);border:1px solid rgba(120,170,255,.26);color:var(--text);
 transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#6d81a3}
.field input:focus,.field textarea:focus,.field select:focus{
 border-color:var(--line-2);background:rgba(5,11,22,.95);
 box-shadow:0 0 0 3px rgba(62,166,255,.16);outline:none;
}
.field textarea{resize:vertical;min-height:96px}
.form-note{font-size:13px;color:var(--text-3);margin:0}
.form-msg{font-size:14px;color:var(--accent-2);min-height:20px;margin:0}
/* ===== 页脚 ===== */
.site-footer{
 border-top:1px solid var(--line);
 background:linear-gradient(180deg,rgba(6,12,24,.7),rgba(4,8,16,.96));
 padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px;margin-bottom:34px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:#fff;margin-bottom:14px}
.footer-about p{font-size:14px;color:var(--text-3);line-height:1.8;max-width:420px;margin:0}
.footer-col h3{font-size:15px;margin-bottom:16px;color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-3)}
.footer-links a:hover{color:var(--accent-2)}
.footer-bottom{
 border-top:1px solid var(--line);padding-top:22px;
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 font-size:13px;color:var(--text-3);
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
 .article-hero-grid{grid-template-columns:1fr;gap:30px}
 .hero-cover img{height:260px}
 .article-layout{grid-template-columns:1fr}
 .side-stack{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .metric-strip{grid-template-columns:repeat(2,1fr)}
 .metric{border-right:0;border-bottom:1px solid var(--line)}
 .metric:nth-child(2n){border-right:0}
 .need-panel{grid-template-columns:1fr;padding:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:900px){
 .main-nav{
  position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
  padding:12px 20px 18px;display:none;
  background:rgba(5,11,22,.98);border-bottom:1px solid var(--line);
  box-shadow:0 26px 46px -30px #000;
 }
 .main-nav.nav-open{display:flex}
 .nav-link{padding:12px 14px;font-size:15px;border-radius:8px}
 .nav-link.is-active::after{left:14px;right:14px;bottom:6px}
 .nav-toggle{display:flex}
}
@media (max-width:768px){
 .section{padding:56px 0}
 .article-hero{padding:108px 0 48px}
 .paper{padding:24px 20px}
 .grid-3,.grid-2,.channel-grid,.steps,.compare-wrap{grid-template-columns:1fr}
 .side-stack{grid-template-columns:1fr}
 .notice-band{flex-direction:column;gap:14px;padding:22px}
 .faq-item p{padding-left:0}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .header-actions .btn-glow{display:none}
 .article-hero h1{font-size:24px}
 .metric-strip{grid-template-columns:1fr}
 .metric{border-bottom:1px solid var(--line);border-right:0}
 .paper{padding:20px 16px}
 .hero-cover img{height:200px}
 .need-panel{padding:22px 18px}
 .btn-glow,.btn-line{padding:11px 18px;font-size:14.5px}
}

/* roulang page: category1 */
:root{
 --bg:#050a14;
 --bg-2:#081120;
 --bg-3:#0b1729;
 --panel:rgba(16,28,50,.72);
 --panel-solid:#0f1c33;
 --line:rgba(120,170,255,.14);
 --line-2:rgba(120,190,255,.34);
 --text:#eaf1ff;
 --text-2:#a9bbd8;
 --text-3:#7b8fae;
 --accent:#3ea6ff;
 --accent-2:#33e1e8;
 --accent-soft:rgba(62,166,255,.12);
 --radius-lg:20px;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 20px 44px -26px rgba(0,0,0,.92);
 --shadow-hover:0 28px 62px -26px rgba(20,100,190,.55);
 --glow:0 14px 34px -14px rgba(62,166,255,.75);
 --container:1180px;
 --ease:.22s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 color:var(--text);
 font-size:16px;
 line-height:1.78;
 background:
 radial-gradient(900px 620px at 8% -6%,rgba(62,166,255,.18),transparent 62%),
 radial-gradient(760px 520px at 96% 4%,rgba(51,225,232,.10),transparent 60%),
 linear-gradient(180deg,#050a14 0%,#07101f 44%,#050a14 100%);
 overflow-x:hidden;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.01em}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0;position:relative}
.section-alt{
 background:linear-gradient(180deg,rgba(9,18,34,.92),rgba(6,12,24,.86));
 border-top:1px solid var(--line);
 border-bottom:1px solid var(--line);
}
.section-head{max-width:800px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
 margin-bottom:12px;font-weight:600;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.section-head h2{font-size:clamp(22px,2.5vw,30px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
/* ===== 导航 ===== */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1000;
 background:rgba(6,13,26,.42);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 backdrop-filter:blur(18px) saturate(150%);
 border-bottom:1px solid rgba(120,170,255,.10);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(5,11,22,.94);
 box-shadow:0 16px 36px -24px #000;
 border-bottom-color:rgba(120,170,255,.24);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:#fff}
.brand-badge{
 width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
 background:linear-gradient(135deg,rgba(62,166,255,.95),rgba(51,225,232,.9));
 color:#04101f;font-size:15px;font-weight:800;
 box-shadow:0 10px 24px -12px rgba(62,166,255,.95);
 transition:transform var(--ease);
}
.brand:hover .brand-badge{transform:translateY(-1px)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 15px;border-radius:8px;font-size:15px;color:var(--text-2)}
.nav-link:hover{color:#fff;background:rgba(62,166,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
 content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),var(--accent-2));
 box-shadow:0 0 12px rgba(62,166,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
 display:none;width:44px;height:44px;border-radius:10px;
 border:1px solid rgba(120,170,255,.28);background:rgba(62,166,255,.08);
 cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#cfe3ff;transition:.25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* ===== 按钮 ===== */
.btn-glow,.btn-line{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;min-height:44px;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-glow{
 background:linear-gradient(135deg,#3ea6ff,#2ad2e0);
 color:#03101f;
 box-shadow:0 14px 32px -16px rgba(62,166,255,.95),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 20px 42px -16px rgba(62,166,255,1);color:#03101f}
.btn-glow:active{transform:translateY(0)}
.btn-line{background:rgba(255,255,255,.03);border-color:rgba(120,170,255,.32);color:var(--text)}
.btn-line:hover{background:rgba(62,166,255,.14);border-color:var(--line-2);transform:translateY(-2px);color:#fff}
.btn-mini{padding:9px 17px;font-size:14px;min-height:38px;border-radius:8px}
/* ===== 分类 Hero ===== */
.cat-hero{position:relative;padding:130px 0 82px;overflow:hidden;isolation:isolate}
.cat-hero .hero-bg{
 position:absolute;inset:0;z-index:-2;
 background-image:url('/assets/images/backpic/back-2.webp');
 background-size:cover;background-position:center;
 filter:brightness(.5) saturate(120%);
}
.cat-hero .hero-veil{
 position:absolute;inset:0;z-index:-1;
 background:
 linear-gradient(180deg,rgba(5,10,20,.62) 0%,rgba(5,10,20,.90) 60%,var(--bg) 100%),
 radial-gradient(760px 460px at 82% 22%,rgba(62,166,255,.28),transparent 72%);
}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:50px;align-items:center}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}
.hero-badge{
 display:inline-flex;align-items:center;gap:9px;padding:6px 15px;border-radius:999px;
 font-size:13px;color:#bfe4ff;background:rgba(62,166,255,.12);
 border:1px solid rgba(62,166,255,.36);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#33e1e8;box-shadow:0 0 0 4px rgba(51,225,232,.16)}
.cat-hero h1{font-size:clamp(28px,3.6vw,42px);line-height:1.24;margin-bottom:16px;letter-spacing:.01em}
.cat-hero h1 em{font-style:normal;color:#8ed6ff}
.hero-sub{color:var(--text-2);font-size:16px;max-width:560px;margin-bottom:24px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.pill{
 display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:999px;
 font-size:13.5px;color:#cfe6ff;background:rgba(12,26,48,.72);
 border:1px solid rgba(120,170,255,.24);
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.ticker{
 display:inline-flex;align-items:center;gap:9px;margin-top:22px;
 font-size:13px;color:#9fd6ff;letter-spacing:.02em;
}
.ticker .pulse{width:8px;height:8px;border-radius:50%;background:#33e1e8;box-shadow:0 0 0 5px rgba(51,225,232,.14);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(51,225,232,.16)}50%{box-shadow:0 0 0 9px rgba(51,225,232,.03)}}
/* Hero 右侧速查面板 */
.hero-panel{
 position:relative;
 background:linear-gradient(160deg,rgba(20,38,68,.86),rgba(10,20,38,.92));
 border:1px solid rgba(120,190,255,.28);
 border-radius:var(--radius-lg);
 padding:26px 24px 22px;
 box-shadow:var(--shadow),inset 0 1px 0 rgba(180,220,255,.10);
 -webkit-backdrop-filter:blur(12px);
 backdrop-filter:blur(12px);
}
.burst{
 position:absolute;top:-16px;right:-10px;
 padding:8px 14px;border-radius:10px;
 font-size:12.5px;font-weight:800;color:#03101f;letter-spacing:.04em;
 background:linear-gradient(135deg,#33e1e8,#3ea6ff);
 box-shadow:0 14px 28px -14px rgba(51,225,232,.9);
 transform:rotate(-6deg);
}
.hero-panel h2{font-size:16px;color:#cfe6ff;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.quick-list{display:grid;gap:12px}
.quick-item{
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:12px 14px;border-radius:12px;
 background:rgba(8,18,34,.72);
 border:1px solid rgba(120,170,255,.14);
 transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.quick-item:hover{border-color:var(--line-2);transform:translateX(3px);background:rgba(14,30,54,.84)}
.quick-item span{font-size:14.5px;color:var(--text-2)}
.quick-item b{font-size:15px;color:#8ed6ff;font-weight:700;white-space:nowrap}
.hero-panel .panel-note{margin-top:16px;font-size:12.8px;color:var(--text-3);line-height:1.7}
/* ===== 指标看板 ===== */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
 padding:24px 22px;border-radius:var(--radius);
 background:var(--panel);
 border:1px solid var(--line);
 box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.metric b{display:block;font-size:32px;line-height:1.2;color:#8ed6ff;letter-spacing:.01em}
.metric b small{font-size:15px;color:var(--text-2);margin-left:4px;font-weight:600}
.metric span{display:block;margin-top:6px;font-size:14px;color:var(--text-2)}
/* ===== 卡片网格 ===== */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
 display:flex;flex-direction:column;gap:12px;
 padding:24px 22px;border-radius:var(--radius);
 background:var(--panel);
 border:1px solid var(--line);
 box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2);background:rgba(20,36,62,.82)}
.card-icon{
 width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
 background:linear-gradient(140deg,rgba(62,166,255,.22),rgba(51,225,232,.12));
 border:1px solid rgba(120,190,255,.28);color:#8ed6ff;
}
.card-icon svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:17.5px}
.card p{color:var(--text-2);font-size:14.5px;margin:0}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:6px}
.tag{
 font-size:12.5px;padding:4px 11px;border-radius:999px;
 color:#a9d8ff;background:rgba(62,166,255,.10);
 border:1px solid rgba(120,170,255,.22);
}
/* ===== 对比区 ===== */
.compare-wrap{display:grid;grid-template-columns:1fr .86fr;gap:44px;align-items:start}
.compare-list{display:grid;gap:14px}
.compare-row{
 display:grid;grid-template-columns:1.05fr 1.3fr .9fr;gap:16px;align-items:center;
 padding:16px 18px;border-radius:12px;
 background:rgba(12,24,44,.72);
 border:1px solid var(--line);
 transition:border-color var(--ease),background var(--ease),transform var(--ease);
}
.compare-row:hover{border-color:var(--line-2);background:rgba(18,34,60,.86);transform:translateY(-2px)}
.compare-row .c-name{font-size:15px;font-weight:600;color:#dbeaff}
.compare-row .c-desc{font-size:14px;color:var(--text-2)}
.compare-row .c-flag{font-size:12.5px;color:#8ed6ff;text-align:right}
.compare-figure{
 border-radius:var(--radius-lg);overflow:hidden;position:relative;
 border:1px solid var(--line);box-shadow:var(--shadow);
}
.compare-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;filter:brightness(.82) saturate(112%)}
.compare-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 18px 14px;
 font-size:13.5px;color:#d6e8ff;
 background:linear-gradient(180deg,rgba(4,10,20,0),rgba(4,10,20,.88));
}
/* ===== 里程碑 ===== */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.step{
 position:relative;padding:22px 20px;border-radius:var(--radius);
 background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.step-no{
 display:inline-flex;align-items:center;justify-content:center;
 width:30px;height:30px;border-radius:9px;font-size:13.5px;font-weight:800;
 color:#03101f;background:linear-gradient(135deg,#3ea6ff,#33e1e8);margin-bottom:12px;
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);margin:0}
/* ===== 资讯列表 ===== */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{
 display:flex;flex-direction:column;gap:10px;
 padding:20px;border-radius:var(--radius);
 background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.post-meta .cat{color:#8ed6ff;padding:2px 10px;border-radius:999px;background:rgba(62,166,255,.10);border:1px solid rgba(120,170,255,.22)}
.post-card h3{font-size:16.5px;line-height:1.55}
.post-card p{font-size:14px;color:var(--text-2);margin:0}
.empty-note{
 padding:26px;border-radius:var(--radius);border:1px dashed rgba(120,170,255,.3);
 color:var(--text-2);font-size:14.5px;text-align:center;background:rgba(10,20,38,.6);
}
/* ===== 保障区 ===== */
.assure-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.assure-item{
 display:flex;gap:16px;padding:22px;border-radius:var(--radius);
 background:rgba(12,24,44,.72);border:1px solid var(--line);
 transition:transform var(--ease),border-color var(--ease);
}
.assure-item:hover{transform:translateY(-3px);border-color:var(--line-2)}
.assure-item .num{
 flex:0 0 auto;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
 font-size:14px;font-weight:800;color:#8ed6ff;
 background:rgba(62,166,255,.12);border:1px solid rgba(120,170,255,.26);
}
.assure-item h3{font-size:16px;margin-bottom:6px}
.assure-item p{font-size:14px;color:var(--text-2);margin:0}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
 border-radius:12px;border:1px solid var(--line);
 background:rgba(12,24,44,.72);overflow:hidden;
 transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:var(--line-2);background:rgba(18,34,60,.85)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:18px 22px;
 font-size:15.5px;font-weight:600;color:#e2efff;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;color:var(--accent-2);line-height:1;font-weight:700;transition:transform var(--ease);
}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-body{padding:0 22px 18px;font-size:14.5px;color:var(--text-2)}
/* ===== 需求表单 ===== */
.need-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:44px;align-items:start}
.need-copy h2{font-size:clamp(22px,2.5vw,29px);margin-bottom:14px}
.need-copy p{color:var(--text-2);font-size:15px}
.need-points{display:grid;gap:11px;margin-top:20px}
.need-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.need-points li::before{
 content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:50%;
 background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.need-form{
 padding:26px 24px;border-radius:var(--radius-lg);
 background:linear-gradient(160deg,rgba(20,38,68,.88),rgba(9,18,34,.94));
 border:1px solid rgba(120,190,255,.26);
 box-shadow:var(--shadow);
 display:grid;gap:16px;
}
.field{display:grid;gap:7px}
.field label{font-size:13.5px;color:#bcd4f2;letter-spacing:.02em}
.field input,.field select,.field textarea{
 width:100%;padding:11px 14px;border-radius:9px;font-size:14.5px;
 background:rgba(6,14,28,.86);color:var(--text);
 border:1px solid rgba(120,170,255,.24);
 transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#6f83a3}
.field input:focus,.field select:focus,.field textarea:focus{
 border-color:var(--line-2);background:rgba(10,22,42,.96);
 box-shadow:0 0 0 3px rgba(62,166,255,.16);outline:none;
}
.field textarea{resize:vertical;min-height:104px}
.form-note{font-size:13.5px;color:#8ed6ff;min-height:20px;margin:0}
/* ===== 页脚 ===== */
.site-footer{
 margin-top:20px;padding:56px 0 26px;
 background:linear-gradient(180deg,rgba(6,13,26,.5),rgba(4,9,18,.96));
 border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-about p{color:var(--text-2);font-size:14px;margin-top:14px;max-width:400px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:16.5px;font-weight:700;color:#fff}
.footer-col h3{font-size:14px;color:#cfe6ff;letter-spacing:.08em;margin-bottom:14px;font-weight:600}
.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:#8ed6ff;transform:translateX(2px)}
.footer-bottom{
 margin-top:38px;padding-top:18px;border-top:1px solid var(--line);
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 font-size:13px;color:var(--text-3);
}
/* ===== 响应式 ===== */
@media(max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:38px}
 .hero-panel{max-width:560px}
 .metrics{grid-template-columns:repeat(2,1fr)}
 .cards-grid{grid-template-columns:repeat(2,1fr)}
 .timeline{grid-template-columns:repeat(2,1fr)}
 .posts-grid{grid-template-columns:repeat(2,1fr)}
 .compare-wrap{grid-template-columns:1fr;gap:32px}
 .need-wrap{grid-template-columns:1fr;gap:32px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .footer-about{grid-column:1 / -1}
}
@media(max-width:900px){
 .main-nav{
  position:fixed;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;
  padding:12px 18px 18px;
  background:rgba(6,13,26,.98);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -30px #000;
  transform:translateY(-14px);opacity:0;pointer-events:none;
  transition:transform .24s ease,opacity .24s ease;
 }
 .main-nav.is-open{transform:none;opacity:1;pointer-events:auto}
 .nav-link{padding:13px 14px;font-size:15.5px}
 .nav-link.is-active::after{left:14px;right:auto;width:22px}
 .nav-toggle{display:flex}
 .header-actions .btn-mini{display:none}
}
@media(max-width:768px){
 .section{padding:56px 0}
 .cat-hero{padding:108px 0 60px}
 .hero-sub{font-size:15px}
 .cards-grid{grid-template-columns:1fr}
 .assure-grid{grid-template-columns:1fr}
 .compare-row{grid-template-columns:1fr;gap:6px}
 .compare-row .c-flag{text-align:left}
 .posts-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column}
}
@media(max-width:520px){
 .container{padding:0 16px}
 .metrics{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr}
 .hero-badge,.pill{font-size:12.5px}
 .btn-glow,.btn-line{width:100%}
 .hero-actions{flex-direction:column}
 .burst{right:0;top:-14px;font-size:12px}
 .cat-hero h1{font-size:26px}
 .compare-figure img{aspect-ratio:16/10}
}

/* roulang page: category3 */
:root{
 --bg:#050a14;
 --bg-2:#081120;
 --bg-3:#0b1729;
 --panel:rgba(16,28,50,.72);
 --panel-solid:#0f1c33;
 --line:rgba(120,170,255,.14);
 --line-2:rgba(120,190,255,.34);
 --text:#eaf1ff;
 --text-2:#a9bbd8;
 --text-3:#7b8fae;
 --accent:#3ea6ff;
 --accent-2:#33e1e8;
 --accent-soft:rgba(62,166,255,.12);
 --radius-lg:20px;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 20px 44px -26px rgba(0,0,0,.92);
 --shadow-hover:0 28px 62px -26px rgba(20,100,190,.55);
 --glow:0 14px 34px -14px rgba(62,166,255,.75);
 --container:1180px;
 --ease:.22s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 color:var(--text);
 font-size:16px;
 line-height:1.78;
 background:
 radial-gradient(900px 620px at 8% -6%,rgba(62,166,255,.18),transparent 62%),
 radial-gradient(760px 520px at 96% 4%,rgba(51,225,232,.10),transparent 60%),
 linear-gradient(180deg,#050a14 0%,#07101f 44%,#050a14 100%);
 overflow-x:hidden;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0;position:relative}
.section-alt{
 background:linear-gradient(180deg,rgba(9,18,34,.92),rgba(6,12,24,.86));
 border-top:1px solid var(--line);
 border-bottom:1px solid var(--line);
}
.section-head{max-width:800px;margin-bottom:38px}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
 text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.section-head h2{font-size:clamp(23px,2.6vw,31px);margin-bottom:12px;line-height:1.34}
.section-head p{color:var(--text-2);font-size:15.5px}

/* ===== 顶部导航 ===== */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1000;
 background:rgba(6,13,26,.42);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 backdrop-filter:blur(18px) saturate(150%);
 border-bottom:1px solid rgba(120,170,255,.10);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(5,11,22,.94);
 box-shadow:0 16px 36px -24px #000;
 border-bottom-color:rgba(120,170,255,.24);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:#fff}
.brand-badge{
 width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
 background:linear-gradient(135deg,rgba(62,166,255,.95),rgba(51,225,232,.9));
 color:#04101f;font-size:15px;font-weight:800;
 box-shadow:0 10px 24px -12px rgba(62,166,255,.95);
 transition:transform var(--ease);
}
.brand:hover .brand-badge{transform:translateY(-1px)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 15px;border-radius:8px;font-size:15px;color:var(--text-2)}
.nav-link:hover{color:#fff;background:rgba(62,166,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
 content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),var(--accent-2));
 box-shadow:0 0 12px rgba(62,166,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
 display:none;width:44px;height:44px;border-radius:10px;
 border:1px solid rgba(120,170,255,.28);background:rgba(62,166,255,.08);
 cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#cfe3ff;transition:.25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ===== 按钮 ===== */
.btn-glow,.btn-line{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;min-height:44px;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-glow{
 background:linear-gradient(135deg,#3ea6ff,#2ad2e0);
 color:#03101f;
 box-shadow:0 14px 32px -16px rgba(62,166,255,.95),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 20px 42px -16px rgba(62,166,255,1);color:#03101f}
.btn-glow:active{transform:translateY(0)}
.btn-line{background:rgba(255,255,255,.03);border-color:rgba(120,170,255,.32);color:var(--text)}
.btn-line:hover{background:rgba(62,166,255,.14);border-color:var(--line-2);transform:translateY(-2px);color:#fff}
.btn-mini{padding:9px 17px;font-size:14px;min-height:38px;border-radius:8px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
 outline:2px solid var(--accent-2);outline-offset:3px;border-radius:8px;
}

/* ===== 分类页 Hero ===== */
.cat-hero{position:relative;padding:130px 0 72px;overflow:hidden;isolation:isolate}
.cat-hero-bg{
 position:absolute;inset:0;z-index:-2;
 background-image:url('/assets/images/backpic/back-2.webp');
 background-size:cover;background-position:center;
 filter:brightness(.5) saturate(115%);
}
.cat-hero-veil{
 position:absolute;inset:0;z-index:-1;
 background:
 linear-gradient(180deg,rgba(5,10,20,.66) 0%,rgba(5,10,20,.9) 60%,var(--bg) 100%),
 radial-gradient(760px 460px at 82% 22%,rgba(51,225,232,.18),transparent 72%);
}
.cat-hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a:hover{color:var(--accent-2)}
.crumb span.sep{color:rgba(120,170,255,.4)}
.cat-hero h1{
 font-size:clamp(28px,3.6vw,42px);line-height:1.28;font-weight:800;letter-spacing:.01em;
 margin-bottom:16px;
}
.cat-hero h1 em{
 font-style:normal;
 background:linear-gradient(120deg,var(--accent),var(--accent-2));
 -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero .lede{color:var(--text-2);font-size:16px;max-width:620px;margin-bottom:24px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{
 display:inline-flex;align-items:center;gap:7px;
 padding:6px 14px;border-radius:999px;font-size:13px;
 color:#bfe4ff;background:rgba(62,166,255,.1);
 border:1px solid rgba(62,166,255,.3);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 3px rgba(51,225,232,.16)}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{
 position:relative;border-radius:var(--radius-lg);overflow:hidden;
 border:1px solid var(--line-2);box-shadow:var(--shadow);
 background:var(--panel-solid);
}
.hero-figure img{width:100%;height:340px;object-fit:cover}
.hero-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:18px 20px;
 background:linear-gradient(180deg,rgba(5,10,20,0),rgba(5,10,20,.92));
 font-size:13.5px;color:var(--text-2);
}

/* ===== 指标看板 ===== */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
 padding:24px 22px;border-radius:var(--radius);border:1px solid var(--line);
 background:var(--panel);box-shadow:var(--shadow);
 -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.metric .num{
 font-size:32px;font-weight:800;line-height:1.1;
 background:linear-gradient(120deg,#eaf6ff,#37d6e6);
 -webkit-background-clip:text;background-clip:text;color:transparent;
 margin-bottom:8px;
}
.metric .num small{font-size:15px;font-weight:600;margin-left:2px}
.metric h3{font-size:15px;margin-bottom:6px;color:#fff}
.metric p{font-size:13.5px;color:var(--text-3);line-height:1.7;margin:0}

/* ===== 技巧矩阵卡片 ===== */
.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.skill-card{
 display:flex;flex-direction:column;gap:12px;
 padding:26px 24px;border-radius:var(--radius);
 background:var(--panel);border:1px solid var(--line);
 box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.skill-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.skill-icon{
 width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
 background:rgba(62,166,255,.14);border:1px solid rgba(62,166,255,.32);
 color:#bfe6ff;
}
.skill-icon svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.skill-card h3{font-size:17px;color:#fff;margin:0}
.skill-card p{font-size:14.5px;color:var(--text-2);margin:0}
.skill-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.chip{
 font-size:12.5px;padding:4px 11px;border-radius:7px;
 color:#9fd7ff;background:rgba(51,225,232,.09);
 border:1px solid rgba(51,225,232,.24);
}

/* ===== 图文区块 ===== */
.figure-split{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center}
.figure-split figure{margin:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--shadow)}
.figure-split figure img{width:100%;height:360px;object-fit:cover}
.figure-split h2{font-size:clamp(22px,2.5vw,30px);margin-bottom:14px;line-height:1.34}
.figure-split p{color:var(--text-2);font-size:15.5px;margin-bottom:14px}
.step-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.step-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text-2)}
.step-list .idx{
 flex:0 0 26px;height:26px;border-radius:8px;display:grid;place-items:center;
 font-size:13px;font-weight:700;color:#03101f;
 background:linear-gradient(135deg,var(--accent),var(--accent-2));
}

/* ===== 结果对比 ===== */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.compare-col{
 padding:28px 26px;border-radius:var(--radius);border:1px solid var(--line);
 background:var(--panel);box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-col:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.compare-col.is-good{border-color:rgba(51,225,232,.34);background:rgba(14,32,52,.8)}
.compare-col h3{display:flex;align-items:center;gap:10px;font-size:17px;margin-bottom:18px;color:#fff}
.dot-bad,.dot-good{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.dot-bad{background:#7b8fae}
.dot-good{background:var(--accent-2);box-shadow:0 0 0 4px rgba(51,225,232,.16)}
.compare-col ul{list-style:none;padding:0;margin:0;display:grid;gap:13px}
.compare-col li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.compare-col li::before{
 content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;
 background:rgba(120,170,255,.5);
}
.compare-col.is-good li::before{background:linear-gradient(135deg,var(--accent),var(--accent-2))}

/* ===== 里程碑时间线 ===== */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.timeline::before{
 content:"";position:absolute;left:0;right:0;top:26px;height:1px;
 background:linear-gradient(90deg,rgba(62,166,255,.5),rgba(51,225,232,.16));
}
.tl-item{position:relative;padding-top:56px}
.tl-dot{
 position:absolute;top:16px;left:0;width:20px;height:20px;border-radius:50%;
 background:var(--bg-3);border:2px solid rgba(62,166,255,.7);
 box-shadow:0 0 0 5px rgba(62,166,255,.1);
}
.tl-item h3{font-size:16px;color:#fff;margin-bottom:8px}
.tl-item .tl-when{font-size:13px;color:var(--accent-2);margin-bottom:6px;letter-spacing:.04em}
.tl-item p{font-size:14px;color:var(--text-3);margin:0}

/* ===== 资讯列表 ===== */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
 display:flex;flex-direction:column;gap:12px;
 padding:22px 22px 20px;border-radius:var(--radius);
 background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.news-top{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3)}
.news-top .chip{font-size:12px;padding:3px 10px}
.news-card h3{font-size:16.5px;line-height:1.5;margin:0}
.news-card h3 a:hover{color:var(--accent-2)}
.news-card p{font-size:14px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:8px;font-size:13.5px;color:var(--accent-2);font-weight:600}
.empty-note{
 grid-column:1/-1;text-align:center;padding:44px 20px;
 border:1px dashed rgba(120,170,255,.26);border-radius:var(--radius);
 color:var(--text-3);font-size:14.5px;background:rgba(10,20,36,.5);
}

/* ===== 平台保障 ===== */
.assure-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.assure{
 padding:26px 24px;border-radius:var(--radius);
 background:linear-gradient(160deg,rgba(16,30,52,.86),rgba(10,20,36,.72));
 border:1px solid var(--line);box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.assure:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.assure .ico{
 width:38px;height:38px;border-radius:10px;display:grid;place-items:center;margin-bottom:14px;
 background:rgba(51,225,232,.12);border:1px solid rgba(51,225,232,.28);color:#a8f0f4;
}
.assure .ico svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.assure h3{font-size:16px;color:#fff;margin-bottom:8px}
.assure p{font-size:14px;color:var(--text-2);margin:0}

/* ===== 快速解答 ===== */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick{
 padding:24px 22px;border-radius:var(--radius-sm);
 background:rgba(12,24,42,.74);border:1px solid var(--line);
 transition:border-color var(--ease),transform var(--ease);
}
.quick:hover{border-color:var(--line-2);transform:translateY(-3px)}
.quick strong{display:block;font-size:15px;color:#fff;margin-bottom:8px}
.quick p{font-size:14px;color:var(--text-2);margin:0}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px}
.faq-item{
 border:1px solid var(--line);border-radius:var(--radius-sm);
 background:rgba(12,24,42,.7);margin-bottom:12px;overflow:hidden;
 transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:var(--line-2);background:rgba(15,29,50,.9)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 52px 18px 22px;position:relative;
 font-size:15.5px;font-weight:600;color:#eef5ff;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
 border-right:2px solid var(--accent-2);border-bottom:2px solid var(--accent-2);
 transform:translateY(-70%) rotate(45deg);transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ===== 转化表单 ===== */
.need-panel{
 display:grid;grid-template-columns:.92fr 1.08fr;gap:38px;align-items:start;
 padding:38px;border-radius:var(--radius-lg);
 background:linear-gradient(150deg,rgba(18,34,58,.9),rgba(8,16,30,.86));
 border:1px solid var(--line-2);box-shadow:var(--shadow);
}
.need-panel h2{font-size:clamp(21px,2.4vw,28px);margin-bottom:12px;line-height:1.34}
.need-panel p{color:var(--text-2);font-size:14.5px;margin-bottom:16px}
.need-points{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.need-points li{font-size:14px;color:var(--text-2);padding-left:20px;position:relative}
.need-points li::before{
 content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;
 background:linear-gradient(135deg,var(--accent),var(--accent-2));
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--text-3)}
.field input,.field select,.field textarea{
 width:100%;padding:11px 14px;border-radius:9px;font-size:14.5px;
 background:rgba(6,14,26,.85);border:1px solid rgba(120,170,255,.24);color:var(--text);
 transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#5f7290}
.field input:focus,.field select:focus,.field textarea:focus{
 border-color:var(--accent);background:rgba(8,18,32,.95);
 box-shadow:0 0 0 3px rgba(62,166,255,.14);
}
.form-tip{font-size:12.5px;color:var(--text-3);margin-top:10px}
.form-msg{font-size:13.5px;color:var(--accent-2);margin-top:10px;min-height:20px}

/* ===== 页脚 ===== */
.site-footer{
 background:linear-gradient(180deg,#050a14,#04080f);
 border-top:1px solid var(--line);padding:56px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:38px;padding-bottom:36px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:#fff;margin-bottom:14px}
.footer-about p{font-size:14px;color:var(--text-3);line-height:1.8;margin:0;max-width:420px}
.footer-col h3{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14.5px;color:var(--text-2)}
.footer-links a:hover{color:var(--accent-2)}
.footer-bottom{
 border-top:1px solid var(--line);padding:18px 0 22px;
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:var(--text-3);
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
 .cat-hero-grid{grid-template-columns:1fr;gap:34px}
 .hero-figure img{height:300px}
 .metrics{grid-template-columns:repeat(2,1fr)}
 .skill-grid{grid-template-columns:repeat(2,1fr)}
 .figure-split{grid-template-columns:1fr;gap:28px}
 .figure-split figure img{height:300px}
 .news-list{grid-template-columns:repeat(2,1fr)}
 .assure-grid{grid-template-columns:1fr 1fr}
 .quick-grid{grid-template-columns:1fr 1fr}
 .timeline{grid-template-columns:repeat(2,1fr);gap:24px}
 .timeline::before{display:none}
 .need-panel{grid-template-columns:1fr;padding:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
 .section{padding:58px 0}
 .cat-hero{padding:108px 0 56px}
 .header-inner{height:60px}
 .nav-toggle{display:flex}
 .main-nav{
  position:absolute;top:100%;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:2px;
  padding:12px 16px 18px;
  background:rgba(6,13,26,.98);
  border-bottom:1px solid var(--line-2);
  box-shadow:0 24px 44px -22px #000;
  display:none;
 }
 .main-nav.is-open{display:flex}
 .nav-link{padding:12px 14px;font-size:15.5px;min-height:44px;display:flex;align-items:center}
 .nav-link.is-active::after{left:14px;right:auto;width:22px}
 .compare{grid-template-columns:1fr}
 .news-list{grid-template-columns:1fr}
 .assure-grid,.quick-grid{grid-template-columns:1fr}
 .form-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;gap:6px}
 .btn-glow,.btn-line{width:100%}
 .hero-btns{flex-direction:column;align-items:stretch}
}
@media (max-width:520px){
 .container{padding:0 18px}
 .metrics{grid-template-columns:1fr}
 .skill-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr}
 .hero-figure img{height:240px}
 .figure-split figure img{height:230px}
 .cat-hero h1{font-size:26px}
 .need-panel{padding:22px}
 .brand{font-size:16px}
}

/* roulang page: category2 */
:root{
 --bg:#050a14;
 --bg-2:#081120;
 --bg-3:#0b1729;
 --panel:rgba(16,28,50,.72);
 --panel-solid:#0f1c33;
 --line:rgba(120,170,255,.14);
 --line-2:rgba(120,190,255,.34);
 --text:#eaf1ff;
 --text-2:#a9bbd8;
 --text-3:#7b8fae;
 --accent:#3ea6ff;
 --accent-2:#33e1e8;
 --accent-soft:rgba(62,166,255,.12);
 --radius-lg:20px;
 --radius:14px;
 --radius-sm:10px;
 --shadow:0 20px 44px -26px rgba(0,0,0,.92);
 --shadow-hover:0 28px 62px -26px rgba(20,100,190,.55);
 --glow:0 14px 34px -14px rgba(62,166,255,.75);
 --container:1180px;
 --ease:.22s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
 color:var(--text);
 font-size:16px;
 line-height:1.78;
 background:
 radial-gradient(900px 620px at 8% -6%,rgba(62,166,255,.18),transparent 62%),
 radial-gradient(760px 520px at 96% 4%,rgba(51,225,232,.10),transparent 60%),
 linear-gradient(180deg,#050a14 0%,#07101f 44%,#050a14 100%);
 overflow-x:hidden;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease)}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0 0 12px;line-height:1.32;font-weight:700;letter-spacing:.01em}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0;position:relative}
.section-alt{
 background:linear-gradient(180deg,rgba(9,18,34,.92),rgba(6,12,24,.86));
 border-top:1px solid var(--line);
 border-bottom:1px solid var(--line);
}
.section-head{max-width:780px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;letter-spacing:.16em;color:var(--accent-2);
 text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.section-kicker::before{content:"";width:24px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.section-head h2{font-size:clamp(23px,2.6vw,31px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
/* ===== 顶部导航 ===== */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1000;
 background:rgba(6,13,26,.42);
 -webkit-backdrop-filter:blur(18px) saturate(150%);
 backdrop-filter:blur(18px) saturate(150%);
 border-bottom:1px solid rgba(120,170,255,.10);
 transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
 background:rgba(5,11,22,.94);
 box-shadow:0 16px 36px -24px #000;
 border-bottom-color:rgba(120,170,255,.24);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.02em;color:#fff}
.brand-badge{
 width:32px;height:32px;display:grid;place-items:center;border-radius:9px;
 background:linear-gradient(135deg,rgba(62,166,255,.95),rgba(51,225,232,.9));
 color:#04101f;font-size:15px;font-weight:800;
 box-shadow:0 10px 24px -12px rgba(62,166,255,.95);
 transition:transform var(--ease);
}
.brand:hover .brand-badge{transform:translateY(-1px)}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 15px;border-radius:8px;font-size:15px;color:var(--text-2);display:inline-flex;align-items:center}
.nav-link:hover{color:#fff;background:rgba(62,166,255,.10)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
 content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;border-radius:2px;
 background:linear-gradient(90deg,var(--accent),var(--accent-2));
 box-shadow:0 0 12px rgba(62,166,255,.9);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
 display:none;width:44px;height:44px;border-radius:10px;
 border:1px solid rgba(120,170,255,.28);background:rgba(62,166,255,.08);
 cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#cfe3ff;transition:.25s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* ===== 按钮 ===== */
.btn-glow,.btn-line{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:9px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;min-height:44px;
 transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-glow{
 background:linear-gradient(135deg,#3ea6ff,#2ad2e0);
 color:#03101f;
 box-shadow:0 14px 32px -16px rgba(62,166,255,.95),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 20px 42px -16px rgba(62,166,255,1);color:#03101f}
.btn-glow:active{transform:translateY(0)}
.btn-line{background:rgba(255,255,255,.03);border-color:rgba(120,170,255,.32);color:var(--text)}
.btn-line:hover{background:rgba(62,166,255,.14);border-color:var(--line-2);transform:translateY(-2px);color:#fff}
.btn-mini{padding:9px 17px;font-size:14px;min-height:38px;border-radius:8px}
.btn-glow:focus-visible,.btn-line:focus-visible,.nav-link:focus-visible,.brand:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px}
/* ===== Hero ===== */
.hero{position:relative;padding:132px 0 78px;overflow:hidden;isolation:isolate}
.hero-bg{
 position:absolute;inset:0;z-index:-2;
 background-image:url('/assets/images/backpic/back-2.webp');
 background-size:cover;background-position:center;
 filter:brightness(.56) saturate(118%);
}
.hero-veil{
 position:absolute;inset:0;z-index:-1;
 background:
 linear-gradient(180deg,rgba(5,10,20,.60) 0%,rgba(5,10,20,.88) 58%,var(--bg) 100%),
 radial-gradient(720px 440px at 78% 26%,rgba(62,166,255,.26),transparent 72%);
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:9px;padding:6px 15px;border-radius:999px;
 font-size:13px;color:#bfe4ff;background:rgba(62,166,255,.12);
 border:1px solid rgba(62,166,255,.36);margin-bottom:20px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#33e1e8;box-shadow:0 0 0 4px rgba(51,225,232,.18)}
.hero h1{font-size:clamp(28px,3.5vw,42px);line-height:1.26;margin-bottom:16px}
.hero-sub{color:var(--text-2);font-size:16px;max-width:610px;margin-bottom:22px}
.hero-points{display:grid;gap:11px;margin-bottom:26px;max-width:600px}
.hero-points li{position:relative;padding-left:28px;color:var(--text-2);font-size:15px}
.hero-points li::before{
 content:"";position:absolute;left:0;top:9px;width:16px;height:16px;border-radius:5px;
 background:linear-gradient(135deg,rgba(62,166,255,.9),rgba(51,225,232,.85));
 box-shadow:0 6px 14px -8px rgba(62,166,255,1);
}
.hero-points li::after{
 content:"";position:absolute;left:5px;top:13px;width:6px;height:3px;
 border-left:2px solid #03101f;border-bottom:2px solid #03101f;transform:rotate(-45deg);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-bottom:24px}
.trust-strip{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--text-3)}
.trust-strip span{display:inline-flex;align-items:center;gap:7px}
.trust-strip span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-2);opacity:.85}
.hero-side{position:relative}
.panel-card{
 background:linear-gradient(160deg,rgba(24,42,72,.86),rgba(11,22,40,.92));
 border:1px solid var(--line-2);border-radius:var(--radius-lg);padding:26px;
 box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.panel-head{display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600;color:#cfe6ff;margin-bottom:16px}
.panel-head .panel-dot{width:9px;height:9px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 5px rgba(51,225,232,.14)}
.spec-list{display:grid;gap:0}
.spec-list > div{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px dashed rgba(120,170,255,.18);font-size:14.5px}
.spec-list > div:last-child{border-bottom:0}
.spec-list dt{color:var(--text-3);font-weight:400}
.spec-list dd{margin:0;color:#dbeaff;font-weight:600}
.panel-note{margin-top:16px;font-size:13.5px;color:var(--text-3);line-height:1.7}
/* ===== 通用卡片 ===== */
.card-grid{display:grid;gap:18px}
.card-grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card-grid.cols-3{grid-template-columns:repeat(3,1fr)}
.card-grid.cols-4{grid-template-columns:repeat(4,1fr)}
.info-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.info-card h3{font-size:16.5px;margin-bottom:8px}
.info-card p{color:var(--text-2);font-size:14.5px;margin:0}
.icon-badge{
 width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
 background:var(--accent-soft);border:1px solid var(--line-2);color:var(--accent-2);
 margin-bottom:14px;
}
.icon-badge svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;
 font-size:12.5px;color:#bfe4ff;background:rgba(62,166,255,.12);border:1px solid rgba(62,166,255,.28);
}
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:46px;align-items:center}
.split.reverse{grid-template-columns:1.05fr .95fr}
.check-list{display:grid;gap:12px;margin-top:18px}
.check-list li{position:relative;padding-left:26px;color:var(--text-2);font-size:15px}
.check-list li::before{
 content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:4px;
 border:1px solid var(--line-2);background:rgba(62,166,255,.16);
}
.check-list li::after{
 content:"";position:absolute;left:4px;top:10px;width:5px;height:3px;
 border-left:1.6px solid var(--accent-2);border-bottom:1.6px solid var(--accent-2);transform:rotate(-45deg);
}
.check-list li strong{color:#e8f2ff}
/* ===== 版本卡 ===== */
.version-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.version-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px;display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.version-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.version-card.featured{border-color:var(--line-2);box-shadow:var(--shadow)}
.version-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.version-name{font-size:16.5px;font-weight:700}
.version-ver{font-size:13px;color:var(--accent-2);font-weight:600;padding:3px 10px;border-radius:999px;background:rgba(51,225,232,.12);border:1px solid rgba(51,225,232,.3)}
.version-list{display:grid;gap:0;margin-bottom:16px}
.version-list li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed rgba(120,170,255,.16);font-size:14px;color:var(--text-2)}
.version-list li:last-child{border-bottom:0}
.version-list li span:last-child{color:#dbeaff}
.version-note{font-size:13.5px;color:var(--text-3);margin-top:auto}
.notice-bar{
 display:flex;gap:12px;align-items:flex-start;margin-top:22px;padding:16px 20px;
 border-radius:var(--radius-sm);border:1px solid var(--line);background:rgba(62,166,255,.07);
 color:var(--text-2);font-size:14.5px;
}
.notice-bar strong{color:#e2efff}
/* ===== 步骤 ===== */
.steps{display:grid;gap:14px}
.step{
 display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start;
 padding:20px 22px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:var(--line-2);box-shadow:var(--shadow)}
.step-num{
 width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
 background:linear-gradient(135deg,rgba(62,166,255,.22),rgba(51,225,232,.14));
 border:1px solid var(--line-2);color:var(--accent-2);font-weight:700;font-size:16px;
}
.step h3{font-size:16px;margin-bottom:6px}
.step p{color:var(--text-2);font-size:14.5px;margin:0}
/* ===== 图文 ===== */
.media-figure{
 border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
 box-shadow:var(--shadow);position:relative;
}
.media-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.media-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;padding:16px 18px;font-size:13.5px;color:#cfe2ff;
 background:linear-gradient(180deg,rgba(5,10,20,0),rgba(5,10,20,.88));
}
/* ===== 排查卡 ===== */
.fix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.fix-card{
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.fix-card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-hover)}
.fix-q{display:flex;align-items:center;gap:9px;font-weight:600;font-size:15.5px;margin-bottom:8px;color:#ffe6c9}
.fix-q .q-dot{width:8px;height:8px;border-radius:50%;background:#ffb457;box-shadow:0 0 0 4px rgba(255,180,87,.14);flex:none}
.fix-card p{font-size:14.5px;color:var(--text-2);margin:0}
/* ===== 里程碑 ===== */
.timeline{position:relative;display:grid;gap:20px;padding-left:26px}
.timeline::before{
 content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
 background:linear-gradient(180deg,rgba(62,166,255,.7),rgba(51,225,232,.25));border-radius:2px;
}
.tl-item{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px}
.tl-item::before{
 content:"";position:absolute;left:-26px;top:24px;width:12px;height:12px;border-radius:50%;
 background:var(--bg);border:2px solid var(--accent-2);box-shadow:0 0 0 4px rgba(51,225,232,.14);
}
.tl-date{font-size:12.5px;letter-spacing:.08em;color:var(--accent-2);font-weight:600;margin-bottom:6px}
.tl-item h3{font-size:16px;margin-bottom:6px}
.tl-item p{font-size:14.5px;color:var(--text-2);margin:0}
/* ===== 资讯列表 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.news-card{
 display:flex;flex-direction:column;gap:9px;padding:22px;
 background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-2)}
.news-cat{align-self:flex-start;font-size:12.5px;padding:3px 10px;border-radius:999px;color:#bfe4ff;background:rgba(62,166,255,.12);border:1px solid rgba(62,166,255,.28)}
.news-card h3{font-size:16px;margin:0;line-height:1.5}
.news-card p{font-size:14px;color:var(--text-2);margin:0}
.news-time{font-size:12.5px;color:var(--text-3);margin-top:auto}
.empty-note{
 padding:26px;border-radius:var(--radius);border:1px dashed var(--line-2);
 background:rgba(62,166,255,.05);color:var(--text-2);font-size:15px;text-align:center;
}
/* ===== 保障 ===== */
.safety-board{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start}
.safety-side{
 background:linear-gradient(160deg,rgba(24,42,72,.8),rgba(10,20,36,.9));
 border:1px solid var(--line-2);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);
}
.safety-side h3{font-size:16.5px;margin-bottom:12px}
.safety-side .spec-list dt{font-size:14px}
.safety-side .spec-list dd{font-size:14px}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 20px;transition:border-color var(--ease),background var(--ease)}
.faq-item:hover{border-color:var(--line-2)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:17px 0;font-weight:600;font-size:15.5px;
 display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;color:var(--accent-2);font-weight:400;line-height:1;flex:none;
 transition:transform var(--ease);
}
.faq-item[open]{border-color:var(--line-2);background:rgba(62,166,255,.07)}
.faq-item[open] summary::after{content:"−"}
.faq-item p{margin:0 0 18px;color:var(--text-2);font-size:14.8px}
/* ===== 表单 ===== */
.form-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:42px;align-items:start}
.form-card{
 background:linear-gradient(160deg,rgba(24,42,72,.78),rgba(10,20,36,.92));
 border:1px solid var(--line-2);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;color:var(--text-2);letter-spacing:.02em}
.field input,.field select,.field textarea{
 background:rgba(8,17,32,.92);border:1px solid var(--line);border-radius:9px;
 padding:11px 13px;color:var(--text);font-size:15px;min-height:44px;width:100%;
 transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#5f7492}
.field input:focus,.field select:focus,.field textarea:focus{
 outline:none;border-color:var(--line-2);box-shadow:0 0 0 3px rgba(62,166,255,.18);background:rgba(10,21,38,.98);
}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px}
.form-hint{font-size:13px;color:var(--text-3)}
.form-tip{
 display:none;margin-top:16px;padding:13px 16px;border-radius:var(--radius-sm);
 border:1px solid rgba(51,225,232,.34);background:rgba(51,225,232,.10);color:#c7f6f8;font-size:14px;
}
.form-tip.is-show{display:block}
/* ===== 页脚 ===== */
.site-footer{
 border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(6,12,24,.7),rgba(4,9,18,.98));
 padding:58px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:40px;padding-bottom:34px}
.footer-about p{color:var(--text-3);font-size:14.5px;margin-top:14px;max-width:420px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:16.5px;color:#fff}
.footer-col h3{font-size:14px;letter-spacing:.1em;color:var(--text-3);text-transform:uppercase;margin-bottom:14px;font-weight:600}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14.5px;color:var(--text-2)}
.footer-links a:hover{color:#fff}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
 padding-top:22px;border-top:1px solid var(--line);color:var(--text-3);font-size:13.5px;
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
 .hero{padding:118px 0 66px}
 .hero-inner{grid-template-columns:1fr;gap:34px}
 .hero-sub{max-width:none}
 .split,.split.reverse,.safety-board,.form-wrap{grid-template-columns:1fr;gap:30px}
 .card-grid.cols-4{grid-template-columns:repeat(2,1fr)}
 .version-grid{grid-template-columns:repeat(2,1fr)}
 .news-grid{grid-template-columns:repeat(2,1fr)}
 .step{grid-template-columns:46px 1fr;padding:18px}
 .section{padding:64px 0}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:860px){
 .nav-toggle{display:flex}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;display:none;
  flex-direction:column;align-items:stretch;gap:2px;padding:12px 18px 18px;
  background:rgba(5,11,22,.98);border-bottom:1px solid var(--line);
  box-shadow:0 24px 40px -28px #000;
 }
 .main-nav.is-open{display:flex}
 .nav-link{padding:12px 14px;min-height:44px;border-radius:9px}
 .nav-link.is-active::after{display:none}
 .nav-link.is-active{background:rgba(62,166,255,.14)}
 .card-grid.cols-3,.fix-grid{grid-template-columns:1fr}
}
@media (max-width:680px){
 .container{padding:0 18px}
 .hero{padding:104px 0 54px}
 .hero h1{font-size:26px}
 .hero-points li{font-size:14.5px}
 .hero-actions .btn-glow,.hero-actions .btn-line{flex:1 1 auto;min-width:140px}
 .card-grid.cols-2,.version-grid,.news-grid,.form-grid{grid-template-columns:1fr}
 .section{padding:52px 0}
 .section-head{margin-bottom:26px}
 .step{grid-template-columns:1fr;gap:12px}
 .timeline{padding-left:22px}
 .tl-item::before{left:-22px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .form-card{padding:22px}
 .panel-card{padding:20px}
 .header-actions .btn-mini{display:none}
}
@media (max-width:420px){
 .brand-name{font-size:15.5px}
 .hero-badge{font-size:12px;padding:5px 12px}
 .trust-strip{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *{transition:none!important;animation:none!important}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}