/* =============================================================
   逆龄韶华生命科技（河南）有限公司 官网
   设计系统：科技蓝 / 玻璃拟态 / 柔光 / 品牌红金点缀 / 全居中版式
   ============================================================= */
:root{
  --blue:#1a6bff;
  --blue-deep:#0b47d6;
  --blue-soft:#4d9bff;
  --violet:#7a4bff;
  --brand:#ef3a35;
  --gold:#f5a623;
  --ink:#0a1e3c;
  --ink-2:#152f55;
  --muted:#5d7192;
  --line:rgba(22,94,200,.13);
  --glass:rgba(255,255,255,.72);
  --glass-strong:rgba(255,255,255,.88);
  --bg:#f4f9ff;
  --shadow:0 18px 48px rgba(20,80,180,.11), 0 2px 8px rgba(20,80,180,.05);
  --shadow-lg:0 28px 70px rgba(20,80,180,.17);
  --r:22px;
  --max:1200px;
  --ease:cubic-bezier(.22,.75,.28,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
[id]{scroll-margin-top:96px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  text-align:center;
}
img{max-width:100%;display:block;margin-left:auto;margin-right:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;text-align:center}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(26,107,255,.18);color:var(--blue-deep)}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 26px;text-align:center}
.center{text-align:center}

/* ---------- 全局背景光斑 / 网格 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(760px 520px at 88% 4%,rgba(76,158,255,.20),transparent 68%),
    radial-gradient(680px 480px at 2% 24%,rgba(122,75,255,.10),transparent 70%),
    radial-gradient(720px 520px at 60% 92%,rgba(245,166,35,.10),transparent 70%),
    linear-gradient(180deg,#f7fbff 0%,#eef6ff 52%,#f8fbff 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.45;
  background-image:linear-gradient(rgba(26,107,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(26,107,255,.045) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}

/* ---------- 顶部品牌条 ---------- */
.topbar{
  background:linear-gradient(100deg,#0b47d6 0%,#5b4fff 46%,#ef3a35 100%);
  color:#fff;font-size:12.5px;letter-spacing:.03em;position:relative;overflow:hidden;
}
.topbar::after{content:"";position:absolute;top:-60px;left:38%;width:340px;height:160px;background:radial-gradient(closest-side,rgba(255,255,255,.32),transparent);filter:blur(14px)}
.topbar .container{display:flex;align-items:center;justify-content:center;gap:18px;min-height:36px;position:relative;z-index:1;flex-wrap:wrap}
.topbar b{font-weight:800}
.topbar .spark{display:inline-block;width:6px;height:6px;border-radius:50%;background:#ffd76a;margin-right:8px;box-shadow:0 0 10px #ffd76a;vertical-align:2px}
.topbar a{text-decoration:underline;text-underline-offset:3px;white-space:nowrap}
.topbar .sep{opacity:.5}

/* ---------- 导航 ---------- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.80);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(22,94,200,.09);transition:box-shadow .3s}
.nav.scrolled{box-shadow:0 8px 28px rgba(15,60,150,.10)}
.nav .container{height:74px;display:flex;align-items:center;justify-content:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{width:42px;height:42px;object-fit:contain;margin:0}
.brand-txt{text-align:center}
.brand-txt strong{display:block;font-size:21px;font-weight:900;letter-spacing:.09em;line-height:1.15;color:var(--ink);white-space:nowrap}
.nav-menu{display:flex;align-items:center;justify-content:center;gap:2px;margin-left:auto}
.nav-menu a{position:relative;padding:9px 11px;font-size:14px;font-weight:600;color:var(--ink-2);border-radius:10px;transition:.22s;white-space:nowrap}
.nav-menu a:hover{color:var(--blue);background:rgba(26,107,255,.07)}
.nav-menu a.active{color:var(--blue);font-weight:800}
.nav-menu a.active::after{content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--brand))}
.nav-cta{margin-left:6px}
.menu-btn{display:none;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;margin-left:auto}
.menu-btn i{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:.25s}
.menu-btn i::before,.menu-btn i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:.25s}
.menu-btn i::before{top:-6px}.menu-btn i::after{top:6px}
.menu-btn.open i{background:transparent}
.menu-btn.open i::before{top:0;transform:rotate(45deg)}
.menu-btn.open i::after{top:0;transform:rotate(-45deg)}

/* ---------- 通用按钮 / 标签 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:12px;font-size:14.5px;font-weight:800;letter-spacing:.01em;transition:transform .25s var(--ease),box-shadow .25s,background .25s;white-space:nowrap;text-align:center}
.btn:hover{transform:translateY(-2px)}
.btn-primary{color:#fff;background:linear-gradient(105deg,#1668ff,#5b4fff 52%,#ef3a35);box-shadow:0 10px 26px rgba(40,86,235,.28),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-primary:hover{box-shadow:0 16px 34px rgba(40,86,235,.40),inset 0 1px 0 rgba(255,255,255,.35)}
.btn-gold{color:#3a2400;background:linear-gradient(105deg,#ffd76a,#f5a623);box-shadow:0 10px 26px rgba(245,166,35,.28)}
.btn-ghost{color:var(--blue-deep);background:rgba(255,255,255,.78);border:1px solid rgba(26,107,255,.24);box-shadow:0 6px 18px rgba(20,80,180,.07)}
.btn-ghost:hover{background:#fff;border-color:var(--blue)}
.btn-outline-red{color:#c92f2c;background:#fff;border:1px solid rgba(239,58,53,.45);box-shadow:0 6px 18px rgba(239,58,53,.08)}
.btn-lg{padding:15px 30px;font-size:16px;border-radius:14px}
.pill{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:6px 14px;border-radius:999px;background:rgba(26,107,255,.09);color:var(--blue-deep);font-size:12.5px;font-weight:800;border:1px solid rgba(26,107,255,.15);text-align:center}
.pill.warm{background:rgba(245,166,35,.14);color:#a86400;border-color:rgba(245,166,35,.28)}
.pill.red{background:rgba(239,58,53,.08);color:#c92f2c;border-color:rgba(239,58,53,.18)}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}

/* ---------- 通用区块 ---------- */
.section{padding:82px 0;position:relative;text-align:center}
.section.tight{padding:60px 0}
.section.tint{background:linear-gradient(180deg,rgba(232,242,255,.62),rgba(244,249,255,.15))}
.section.warm-tint{background:linear-gradient(180deg,rgba(255,247,230,.55),rgba(244,249,255,.10))}
.eyebrow{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:11.5px;font-weight:900;letter-spacing:.22em;color:var(--blue);margin-bottom:14px;text-align:center}
.eyebrow::before,.eyebrow::after{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--blue),var(--brand))}
.eyebrow::after{background:linear-gradient(90deg,var(--brand),var(--blue))}
.h2{font-size:clamp(28px,3.2vw,42px);line-height:1.34;font-weight:900;letter-spacing:-.02em;color:var(--ink);text-align:center}
.h2 .blue{color:var(--blue)}
.h2 .grad{background:linear-gradient(100deg,#1668ff 8%,#7a4bff 48%,#ef3a35 96%);-webkit-background-clip:text;background-clip:text;color:transparent}
.h3{font-size:19px;font-weight:850;letter-spacing:-.01em;line-height:1.5;text-align:center}
.lead{color:var(--muted);font-size:15.5px;line-height:1.95;max-width:820px;margin:16px auto 0;text-align:center}
.sec-head{margin-bottom:42px;text-align:center}
.mt-s{margin-top:16px}.mt-m{margin-top:28px}.mt-l{margin-top:44px}

/* ---------- 玻璃卡片 ---------- */
.glass{background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:var(--r)}
.card{padding:30px 26px;position:relative;overflow:hidden;text-align:center;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:var(--r);transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,rgba(26,107,255,.55),rgba(239,58,53,.45),transparent);opacity:0;transition:.35s}
.card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);border-color:rgba(26,107,255,.25)}
.card:hover::before{opacity:1}
.card p{color:var(--muted);font-size:13.8px;line-height:1.9;text-align:center}
.card .ico{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#2b7bff,#7a4bff);box-shadow:0 10px 22px rgba(43,105,240,.28);margin:0 auto 18px;font-size:22px;font-weight:900}
.card .ico.warm{background:linear-gradient(135deg,#ffc65c,#ef3a35);box-shadow:0 10px 22px rgba(239,58,53,.24)}
/* 会员档位金额：胶囊宽度随文字自适应，避免移动端色块与数字宽度不符 */
.card .ico.price{width:max-content;min-width:112px;height:46px;padding:0 20px;border-radius:999px;font-size:19px;line-height:1;white-space:nowrap;letter-spacing:.01em;font-variant-numeric:tabular-nums;background:linear-gradient(135deg,#ffc65c,#ef3a35);box-shadow:0 10px 22px rgba(239,58,53,.24)}
.card .ico svg{width:26px;height:26px}
.card .num{font-size:12px;font-weight:900;letter-spacing:.18em;color:var(--blue);margin-bottom:10px}
.card h3{font-size:19px;font-weight:850;margin-bottom:10px;line-height:1.5;text-align:center}
.grid{display:grid;gap:22px;text-align:center}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 30px;text-align:center}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.hero-bg .glow{position:absolute;border-radius:50%;filter:blur(70px)}
.hero-bg .g1{width:620px;height:430px;right:-90px;top:-120px;background:rgba(80,160,255,.30)}
.hero-bg .g2{width:420px;height:340px;right:26%;top:150px;background:rgba(239,58,53,.10)}
.hero-bg .g3{width:460px;height:300px;left:-160px;bottom:0;background:rgba(245,166,35,.14)}
.hero-art{position:absolute;left:50%;top:-40px;transform:translateX(-50%);width:840px;max-width:none;opacity:.26;z-index:0;pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero .eyebrow{margin-bottom:20px}
.hero h1{font-size:clamp(32px,3.6vw,52px);line-height:1.32;font-weight:900;letter-spacing:-.03em;text-align:center}
.hero h1 .l1{display:block;font-size:.56em;font-weight:800;letter-spacing:.06em;color:var(--ink-2);margin-bottom:14px}
.t-grad{background:linear-gradient(100deg,#1668ff,#7a4bff 50%,#ef3a35);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin:22px auto 0;font-size:16px;line-height:2;color:var(--muted);max-width:760px;text-align:center}
.hero-sub strong{color:var(--ink-2);font-weight:800}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:30px}
.hero-trust{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:26px}
.hero-trust .pill{background:rgba(255,255,255,.72)}

/* 数字条 */
.stat-strip{position:relative;z-index:3;max-width:1000px;margin:44px auto 0;padding:22px 24px;display:grid;grid-template-columns:repeat(4,1fr);border-radius:20px;text-align:center}
.stat{padding:4px 18px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:29px;font-weight:900;letter-spacing:-.03em;background:linear-gradient(100deg,var(--blue),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25;text-align:center}
.stat b small{font-size:14px;margin-left:2px}
.stat span{font-size:12.5px;color:var(--muted);font-weight:600;text-align:center;display:block}

/* ---------- 列表 / 要点 ---------- */
.tick{display:flex;flex-direction:column;align-items:center;gap:9px;margin-top:18px;text-align:center}
.tick li{display:flex;align-items:center;justify-content:center;gap:8px;font-size:13.6px;color:var(--ink-2);text-align:center}
.tick li::before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--brand));flex:none}
.big-card{padding:36px 32px;text-align:center}
.big-card .tag{font-size:11px;font-weight:900;letter-spacing:.16em;color:var(--blue)}
.big-card h3{font-size:25px;margin:10px 0 8px;font-weight:900;text-align:center}
.big-card .one{color:var(--muted);font-size:14px;text-align:center}

/* ---------- 时间轴 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px;position:relative;text-align:center}
.timeline::before{content:"";position:absolute;left:8%;right:8%;top:26px;height:2px;background:linear-gradient(90deg,var(--blue),var(--violet),var(--brand));opacity:.35}
.tl-item{position:relative;padding-top:62px;text-align:center}
.tl-item .dotbig{position:absolute;top:16px;left:50%;transform:translateX(-50%);width:22px;height:22px;border-radius:50%;background:#fff;border:5px solid var(--blue);box-shadow:0 0 0 5px rgba(26,107,255,.12)}
.tl-item:nth-child(even) .dotbig{border-color:var(--brand);box-shadow:0 0 0 5px rgba(239,58,53,.12)}
.tl-item b{display:block;font-size:17px;color:var(--blue-deep);font-weight:900;letter-spacing:.04em}
.tl-item h4{font-size:15px;font-weight:800;margin:6px 0 6px}
.tl-item p{font-size:13px;color:var(--muted);line-height:1.8}

/* ---------- 产品展示 ---------- */
.product-shot{max-width:520px;border-radius:26px;overflow:hidden;box-shadow:0 26px 60px rgba(20,60,140,.20);border:6px solid #fff;margin:0 auto}
.product-shot img{width:100%;height:auto}
.price-line{display:inline-flex;align-items:center;justify-content:center;gap:12px;margin-top:24px;padding:12px 26px;border-radius:16px;background:linear-gradient(105deg,#fff6e2,#fff);border:1px solid rgba(245,166,35,.35);font-size:15px;color:var(--ink-2);font-weight:700;text-align:center}
.price-line b{font-size:26px;font-weight:900;color:#c92f2c}
.note{font-size:12.5px;color:#8b96ab;line-height:1.9;max-width:860px;margin:24px auto 0;text-align:center}

/* ---------- 表格 ---------- */
.info-table{width:100%;border-collapse:collapse;margin:28px auto 0;background:rgba(255,255,255,.80);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);font-size:14px;text-align:center}
.info-table th,.info-table td{padding:14px 18px;border-bottom:1px solid rgba(22,94,200,.10);text-align:center;vertical-align:middle}
.info-table th{width:26%;color:var(--ink-2);font-weight:800;background:rgba(26,107,255,.055)}
.info-table td{color:var(--muted)}
.info-table tr:last-child th,.info-table tr:last-child td{border-bottom:0}

/* ---------- 资讯列表 ---------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px}
.filter-bar button{padding:8px 18px;border-radius:999px;font-size:13px;font-weight:700;color:var(--ink-2);background:rgba(255,255,255,.82);border:1px solid var(--line);transition:.2s}
.filter-bar button:hover{border-color:var(--blue);color:var(--blue)}
.filter-bar button.on{color:#fff;background:linear-gradient(105deg,#1668ff,#5b4fff);border-color:transparent;box-shadow:0 8px 20px rgba(40,86,235,.22)}
.article-list{display:grid;gap:20px;max-width:940px;margin:0 auto;text-align:center}
.article-card{display:block;padding:28px 30px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);border-radius:20px;transition:transform .3s var(--ease),box-shadow .3s;text-align:center}
.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.article-card .a-meta{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-bottom:12px}
.article-card .a-date{font-weight:900;color:var(--blue-deep);letter-spacing:.04em}
.article-card h3{font-size:20px;line-height:1.55;font-weight:850;margin-bottom:10px;text-align:center}
.article-card p{font-size:14px;color:var(--muted);line-height:1.9;max-width:760px;margin:0 auto;text-align:center}
.article-card .a-more{display:inline-block;margin-top:16px;font-size:13px;font-weight:800;color:var(--blue);text-align:center}
.article-card:hover .a-more{color:var(--brand)}
.page-nav{display:flex;gap:8px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.page-nav span,.page-nav a{padding:8px 15px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted)}
.page-nav .on{color:#fff;background:var(--blue);border-color:var(--blue);font-weight:800}

/* ---------- 文章详情 ---------- */
.article-wrap{max-width:900px;margin:0 auto;padding:54px 24px 76px;text-align:center}
.article-meta h1{display:block;font-size:clamp(24px,2.6vw,34px);line-height:1.5;font-weight:900;color:var(--ink);text-align:center;letter-spacing:-.02em}
.article-meta span{display:block;margin-top:14px;font-size:13px;color:var(--muted);text-align:center}
.article-meta .crumb{font-size:12.5px;color:var(--blue);margin-bottom:20px;text-align:center}
.article-body{margin:34px auto 0;max-width:820px;text-align:center}
.article-body p{font-size:16px;line-height:2.15;color:#2b3d5c;margin-bottom:20px;text-align:center}
.article-body h2{font-size:22px;font-weight:900;color:var(--ink);margin:34px 0 14px;text-align:center}
.article-body h3{font-size:18px;font-weight:850;color:var(--blue-deep);margin:26px 0 10px;text-align:center}
.article-body ul{margin:0 auto 22px;max-width:760px;text-align:center}
.article-body li{font-size:15.5px;line-height:2;color:#2b3d5c;text-align:center}
.article-body li::before{content:"◆";color:var(--gold);font-size:10px;margin-right:8px;vertical-align:2px}
.article-quote{margin:28px auto;padding:20px 26px;border-radius:18px;background:linear-gradient(105deg,rgba(26,107,255,.07),rgba(239,58,53,.06));border:1px solid var(--line);font-size:15px;line-height:2;color:var(--ink-2);text-align:center;max-width:760px}
.article-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:40px}
.related{margin-top:44px;padding-top:28px;border-top:1px solid var(--line);text-align:center}
.related h4{font-size:16px;font-weight:900;margin-bottom:16px}
.related a{display:block;font-size:14px;color:var(--blue-deep);line-height:2.1}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:grid;gap:12px;text-align:center}
.faq details{background:rgba(255,255,255,.80);border:1px solid var(--line);border-radius:16px;padding:16px 22px;text-align:center;box-shadow:0 4px 16px rgba(20,80,180,.05)}
.faq summary{font-size:15.5px;font-weight:800;color:var(--ink-2);cursor:pointer;list-style:none;text-align:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--blue);margin-left:10px;font-weight:900}
.faq details[open] summary::after{content:"－"}
.faq details p{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.95;text-align:center}

/* ---------- CTA 带 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:28px;padding:54px 30px;color:#fff;background:linear-gradient(110deg,#0b47d6,#5b4fff 52%,#ef3a35);box-shadow:0 24px 60px rgba(20,60,160,.24);text-align:center}
.cta-band::before{content:"";position:absolute;width:520px;height:340px;left:-120px;top:-180px;background:radial-gradient(circle,rgba(255,214,106,.32),transparent 68%);filter:blur(18px)}
.cta-band h2{position:relative;font-size:clamp(26px,3vw,38px);font-weight:900;line-height:1.4}
.cta-band p{position:relative;margin:14px auto 0;max-width:680px;font-size:15px;color:rgba(255,255,255,.90);line-height:1.9}
.cta-band .btn{margin-top:26px;position:relative}

/* ---------- 内页头部 ---------- */
.page-hero{position:relative;overflow:hidden;padding:66px 0 56px;text-align:center}
.page-hero::before{content:"";position:absolute;left:50%;top:-190px;transform:translateX(-50%);width:820px;height:430px;background:radial-gradient(ellipse,rgba(26,107,255,.18),transparent 68%);filter:blur(18px)}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{font-size:clamp(30px,3.8vw,48px);font-weight:900;letter-spacing:-.03em;line-height:1.3}
.page-hero p{color:var(--muted);font-size:15.5px;line-height:1.9;max-width:780px;margin:14px auto 0}
.crumbs{font-size:12.5px;color:var(--muted);margin-bottom:18px;text-align:center}
.crumbs a{color:var(--blue)}
.crumbs span{margin:0 8px;opacity:.5}

/* ---------- 页脚（紧凑三栏） ---------- */
.footer{position:relative;overflow:hidden;margin-top:24px;background:linear-gradient(120deg,#071c43 0%,#0b3280 50%,#123a91 100%);color:#cfe0ff;text-align:center}
.footer::before{content:"";position:absolute;width:600px;height:400px;right:-100px;top:-220px;background:radial-gradient(circle,rgba(90,160,255,.30),transparent 68%);filter:blur(20px)}
.footer .container{position:relative;z-index:1}
.footer-top{display:grid;grid-template-columns:1.3fr 1.25fr 1fr;gap:28px;padding:22px 0 12px;text-align:center}
.footer .brand{justify-content:center}
.footer .brand img{width:40px;height:40px;background:#fff;border-radius:12px;padding:3px;margin:0}
.footer .brand-txt strong{color:#fff;font-size:19px}
.footer-about{font-size:12.5px;line-height:1.85;color:#a9c2ec;margin:10px auto 0;max-width:340px;text-align:center}
.footer h4{font-size:13.5px;font-weight:900;color:#fff;margin-bottom:12px;text-align:center}
.footer li{margin-bottom:7px;font-size:12.5px;text-align:center}
.footer li a{color:#b8cffa;transition:.2s}
.footer li a:hover{color:#fff}
.footer .biz-cols{display:grid;grid-template-columns:1fr 1fr;gap:8px 14px;text-align:center}
.footer .biz-cols ul{text-align:center}
.footer-qr{width:66px;height:66px;border-radius:12px;background:#fff;padding:4px;margin:0 auto 7px}
.footer-qr img{width:100%;height:100%;object-fit:contain;margin:0}
.footer-contact{font-size:12.5px;color:#b8cffa;line-height:1.9;text-align:center}
.footer-contact b{color:#fff;font-size:13.5px}
.footer-address{border-top:1px solid rgba(255,255,255,.11);padding:12px 0;font-size:12.5px;color:#b8cffa;line-height:1.85;text-align:center}
.footer-address b{color:#fff}
.footer-links{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px 14px;padding:9px 0;border-top:1px solid rgba(255,255,255,.10);font-size:12.5px;color:#8fabd9;text-align:center}
.footer-links .fl-label{font-weight:800;color:#dbe9ff;white-space:nowrap}
.footer-links a{color:#b8cffa;white-space:nowrap}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-links .fl-sep{opacity:.45}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:10px 0 14px;font-size:12px;color:#8fabd9;text-align:center;line-height:1.8}

/* ---------- 返回顶部 ---------- */
#back-top{position:fixed;right:22px;bottom:24px;z-index:70;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#1668ff,#5b4fff);color:#fff;font-size:20px;font-weight:900;box-shadow:0 10px 26px rgba(40,86,235,.32);opacity:0;pointer-events:none;transition:.25s;display:flex;align-items:center;justify-content:center}
#back-top.show{opacity:1;pointer-events:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav .container{gap:12px}
  .nav-menu a{padding:9px 8px;font-size:13px}
  .nav-cta{display:none}
  .g4{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr);row-gap:28px}
  .timeline::before{display:none}
}
@media (max-width:820px){
  .topbar .hide-sm{display:none}
  .nav .container{height:66px}
  .nav-menu{display:none;position:absolute;top:66px;left:0;right:0;background:rgba(255,255,255,.97);backdrop-filter:blur(18px);flex-direction:column;gap:2px;padding:12px 18px 18px;border-bottom:1px solid var(--line);box-shadow:0 16px 34px rgba(15,60,150,.12)}
  .nav-menu.open{display:flex}
  .nav-menu a{width:100%;padding:11px;font-size:14.5px}
  .menu-btn{display:flex}
  .hero{padding:48px 0 20px}
  .hero-art{width:640px;opacity:.20}
  .section{padding:60px 0}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:14px 0;padding:18px}
  .stat:nth-child(2){border-right:0}
  .timeline{grid-template-columns:1fr}
  .tl-item{padding-top:16px}
  .tl-item .dotbig{display:none}
  .footer-top{grid-template-columns:1fr;gap:20px;padding:28px 0 18px}
  .article-card{padding:22px}
  .article-card h3{font-size:18px}
  .info-table th,.info-table td{padding:11px 8px;font-size:13px}
  .info-table th{width:34%}
  .card .ico.price{min-width:96px;height:42px;padding:0 14px;font-size:17px}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:14.5px}
  .btn{padding:11px 18px;font-size:13.5px}
  .cta-band{padding:40px 20px}
  .card .ico.price{min-width:92px;height:40px;padding:0 12px;font-size:16px}
}