/* ==========================================================================
快网科技官网 · 全局样式
设计规范：主色 #1c4ed8 / 辅色 #0ea5e9 / 强调 #ff6a00
字号层级：H1 44 → H2 32 → H3 21 → 正文 16 → 辅助 14
========================================================================== */
:root{
--ink:#0d1b33;
--ink2:#243a5e;
--mut:#5d7295;
--mut2:#8397b5;
--line:#e3ebf7;
--line2:#eef3fb;
--bg:#f6f9ff;
--bg2:#eef4ff;
--white:#fff;
--pri:#1c4ed8;
--pri-d:#153fb0;
--sky:#0ea5e9;
--acc:#ff6a00;
--ok:#0e9f6e;
--grad:linear-gradient(135deg,#1c4ed8 0%,#0ea5e9 100%);
--grad-soft:linear-gradient(135deg,#eef4ff 0%,#e6f6ff 100%);
--r:14px; --rs:10px; --rl:22px; --pill:999px;
--sh:0 4px 18px rgba(16,42,96,.06);
--sh-h:0 14px 38px rgba(16,42,96,.13);
--sh-l:0 22px 60px rgba(16,42,96,.16);
--max:1200px;
--h-hd:72px;
--font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
color:var(--ink2);background:var(--white);
-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--pri);text-decoration:none;transition:color .18s}
a:hover{color:var(--pri-d)}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:16px}
::selection{background:rgba(28,78,216,.16)}
:focus-visible{outline:2px solid var(--pri);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;z-index:999;background:var(--pri);color:#fff;padding:10px 18px;border-radius:0 0 8px 0}
.skip-link:focus{left:0;color:#fff}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* ================= 按钮 ================= */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
height:46px;padding:0 26px;border:0;border-radius:var(--rs);
font-size:15.5px;font-weight:600;white-space:nowrap;
transition:transform .18s,box-shadow .18s,background .18s,color .18s;
}
.btn svg{flex:none}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 6px 18px rgba(28,78,216,.26)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(28,78,216,.34)}
.btn-white{background:#fff;color:var(--pri);box-shadow:0 6px 18px rgba(0,0,0,.14)}
.btn-white:hover{color:var(--pri-d);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--pri);border:1.5px solid #cfdcf8}
.btn-ghost:hover{border-color:var(--pri);background:#f4f8ff;color:var(--pri-d);transform:translateY(-2px)}
.btn-ghost-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff}
.btn-acc{background:var(--acc);color:#fff;box-shadow:0 6px 18px rgba(255,106,0,.28)}
.btn-acc:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,0,.36)}
.btn-sm{height:38px;padding:0 18px;font-size:14.5px}
.btn-lg{height:54px;padding:0 34px;font-size:17px}
.btn-block{width:100%}
/* ================= 头部 ================= */
.site-header{
position:fixed;top:0;left:0;right:0;z-index:120;
background:rgba(255,255,255,.92);backdrop-filter:blur(14px);
border-bottom:1px solid transparent;transition:box-shadow .25s,border-color .25s;
}
.site-header.scrolled{box-shadow:0 4px 22px rgba(16,42,96,.09);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:26px;height:var(--h-hd)}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{display:flex;flex:none;box-shadow:0 4px 12px rgba(28,78,216,.28);border-radius:11px}
.logo-text{display:flex;flex-direction:column;line-height:1.16}
.logo-text b{font-size:19px;color:var(--ink);font-weight:800;letter-spacing:.5px}
.logo-text i{font-style:normal;font-size:11.5px;color:var(--mut2);letter-spacing:.6px}
.logo-light .logo-text b{color:#fff}
.logo-light .logo-text i{color:rgba(255,255,255,.6)}
.main-nav{margin-left:auto}
.main-nav>ul{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-item>a{
display:block;padding:10px 15px;border-radius:var(--rs);
font-size:15.5px;font-weight:500;color:var(--ink2);
}
.nav-item>a:hover{color:var(--pri);background:#f2f7ff}
.nav-item.active>a{color:var(--pri);font-weight:700;background:#eef4ff}
.sub-toggle{
display:none;position:absolute;right:4px;top:50%;transform:translateY(-50%);
width:26px;height:26px;border:0;background:transparent;
}
.sub-toggle::after{
content:"";display:block;width:7px;height:7px;margin:0 auto;
border-right:1.8px solid var(--mut2);border-bottom:1.8px solid var(--mut2);
transform:rotate(45deg) translate(-2px,-2px);transition:transform .2s;
}
.sub-menu{
position:absolute;top:calc(100% + 8px);left:0;min-width:184px;
background:#fff;border:1px solid var(--line);border-radius:var(--r);
box-shadow:var(--sh-h);padding:8px;opacity:0;visibility:hidden;
transform:translateY(-6px);transition:all .2s;
}
.has-sub:hover .sub-menu,.has-sub:focus-within .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu li a{display:block;padding:9px 14px;border-radius:8px;font-size:14.5px;color:var(--ink2);white-space:nowrap}
.sub-menu li a:hover{background:#f2f7ff;color:var(--pri)}
.nav-foot{display:none}
.header-act{display:flex;align-items:center;gap:14px;flex:none}
.header-tel{display:flex;align-items:center;gap:8px;color:var(--ink)}
.header-tel:hover{color:var(--pri)}
.ht-ico{display:flex;width:36px;height:36px;align-items:center;justify-content:center;border-radius:10px;background:#eef4ff;color:var(--pri)}
.ht-txt{display:flex;flex-direction:column;line-height:1.2}
.ht-txt i{font-style:normal;font-size:11.5px;color:var(--mut2)}
.ht-txt b{font-size:16px;font-weight:700;letter-spacing:.3px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0;position:relative}
.nav-toggle span{position:absolute;left:11px;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){top:20px;transform:rotate(-45deg)}
body{padding-top:var(--h-hd)}
/* ================= 首屏 ================= */
/* 注意：.hero/.stats/.cta-band 的左右内边距由内部 .wrap 提供，
上下留白必须写在「外层 section」上——若写在同时带 .wrap 的内层元素上，
会把 .wrap 的 padding:0 24px 整体覆盖掉（同为单类选择器，靠后者胜出）。 */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#f4f8ff 0%,#eaf3ff 44%,#f7fbff 100%);padding:76px 0 84px}
.hero::before{
content:"";position:absolute;width:760px;height:760px;right:-240px;top:-320px;border-radius:50%;
background:radial-gradient(circle,rgba(28,78,216,.13),transparent 66%);
}
.hero::after{
content:"";position:absolute;width:520px;height:520px;left:-200px;bottom:-280px;border-radius:50%;
background:radial-gradient(circle,rgba(14,165,233,.13),transparent 68%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.hero-badge{
display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--pill);
background:#fff;border:1px solid #dbe7fb;box-shadow:var(--sh);
font-size:13.5px;color:var(--pri);font-weight:600;margin-bottom:22px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(14,159,110,.16)}
.hero h1{font-size:45px;line-height:1.24;margin-bottom:20px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--pri);position:relative;white-space:nowrap}
.hero h1 em::after{
content:"";position:absolute;left:0;right:0;bottom:3px;height:9px;
background:linear-gradient(90deg,rgba(255,106,0,.28),rgba(255,106,0,.05));border-radius:4px;z-index:-1;
}
.hero-lead{font-size:17.5px;line-height:1.9;color:var(--mut);margin-bottom:30px;max-width:560px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:15px;color:var(--ink2)}
.hero-points li{display:flex;align-items:center;gap:7px}
.hero-points svg{color:var(--ok);flex:none}
.hero-visual{position:relative}
.hv-card{
background:#fff;border:1px solid var(--line);border-radius:var(--rl);
box-shadow:var(--sh-l);overflow:hidden;
}
.hv-bar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:#f7faff;border-bottom:1px solid var(--line2)}
.hv-bar i{width:9px;height:9px;border-radius:50%;background:#ff5f57;display:block}
.hv-bar i:nth-child(2){background:#febc2e}
.hv-bar i:nth-child(3){background:#28c840}
.hv-url{flex:1;height:20px;margin-left:10px;background:#fff;border:1px solid var(--line2);border-radius:6px;
font-size:11.5px;color:var(--mut2);line-height:20px;padding:0 10px;overflow:hidden;white-space:nowrap}
.hv-body{padding:20px}
.hv-row{display:flex;gap:10px;margin-bottom:12px}
.hv-tile{flex:1;height:64px;border-radius:11px;background:var(--grad-soft);border:1px solid #dfeafd;
display:flex;align-items:center;justify-content:center;color:var(--pri);font-size:12.5px;font-weight:600;flex-direction:column;gap:5px}
.hv-tile.hl{background:var(--grad);color:#fff;border-color:transparent}
.hv-chart{display:flex;align-items:flex-end;gap:8px;height:96px;padding:14px;background:#f7faff;border-radius:12px;margin-bottom:12px}
.hv-chart i{flex:1;background:linear-gradient(180deg,#0ea5e9,#1c4ed8);border-radius:5px 5px 0 0;display:block}
.hv-list{display:flex;flex-direction:column;gap:8px}
.hv-li{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--mut)}
.hv-li span{width:6px;height:6px;border-radius:50%;background:var(--sky);flex:none}
.hv-li b{margin-left:auto;color:var(--ink);font-weight:600}
.hv-float{
position:absolute;background:#fff;border-radius:14px;box-shadow:var(--sh-h);
padding:12px 16px;display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--ink);
border:1px solid var(--line);
}
.hv-float svg{color:var(--ok)}
.hv-f1{left:-30px;bottom:-34px;animation:float1 5s ease-in-out infinite}
.hv-f2{right:-26px;top:-24px;animation:float1 6s ease-in-out infinite .8s}
@keyframes float1{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
/* ================= 数据条 ================= */
.stats{background:var(--grad);color:#fff;padding:34px 0}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{text-align:center}
.stat b{display:block;font-size:36px;font-weight:800;line-height:1.1;letter-spacing:-1px}
.stat b i{font-style:normal;font-size:19px;font-weight:600;margin-left:2px}
.stat span{font-size:14px;opacity:.86}
/* ================= 通用区块 ================= */
.sec{padding:82px 0}
.sec-alt{background:var(--bg)}
.sec-tight{padding:60px 0}
.sec-head{max-width:760px;margin:0 auto 46px}
.sec-head.center{text-align:center}
.kicker{
display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
color:var(--pri);background:#eef4ff;padding:5px 14px;border-radius:var(--pill);margin-bottom:14px;
}
.sec-head h2{font-size:32px;margin-bottom:14px}
.sec-head .sec-desc{font-size:16.5px;color:var(--mut);line-height:1.85;margin:0}
.sec-head.left{margin-left:0;text-align:left}
/* ================= 卡片网格 ================= */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
background:#fff;border:1px solid var(--line);border-radius:var(--r);
padding:28px 26px;transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#d3e0f8}
.svc-card{display:flex;flex-direction:column;position:relative;overflow:hidden}
.svc-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--grad);transition:width .3s}
.svc-card:hover::after{width:100%}
.svc-ico{
width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
background:var(--grad-soft);color:var(--pri);margin-bottom:18px;
}
.svc-card h3{font-size:20px;margin-bottom:6px}
.svc-card .svc-sub{font-size:13px;color:var(--sky);font-weight:600;margin-bottom:12px}
.svc-card p{font-size:15px;color:var(--mut);line-height:1.8;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.tag{font-size:12.5px;color:var(--ink2);background:#f2f7ff;border:1px solid #e2ecfd;border-radius:6px;padding:4px 10px}
.more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--pri);display:inline-flex;align-items:center;gap:6px}
.more svg{transition:transform .2s}
.card:hover .more svg{transform:translateX(4px)}
/* 行业卡 */
.sol-card{display:flex;flex-direction:column}
.sol-head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.sol-ico{width:46px;height:46px;border-radius:12px;background:var(--grad-soft);color:var(--pri);
display:flex;align-items:center;justify-content:center;flex:none}
.sol-head h3{font-size:18.5px;margin-bottom:2px}
.sol-head span{font-size:12.5px;color:var(--mut2)}
.sol-card>p{font-size:14.5px;color:var(--mut);line-height:1.8}
.sol-mods{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.sol-mods .tag{font-size:12px;background:#f7faff}
/* ================= 行业 Tab ================= */
.tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:34px}
.tab{
padding:10px 20px;border-radius:var(--pill);border:1px solid var(--line);
background:#fff;font-size:14.5px;font-weight:600;color:var(--ink2);transition:.2s;
}
.tab:hover{border-color:#bcd3f7;color:var(--pri)}
.tab.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(28,78,216,.26)}
.tab-panel{display:none}
.tab-panel.on{display:block;animation:fadeUp .38s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.panel-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start}
.panel-box{background:#fff;border:1px solid var(--line);border-radius:var(--rl);padding:32px;box-shadow:var(--sh)}
.panel-box h3{font-size:24px;margin-bottom:8px}
.panel-box .pb-scene{font-size:13.5px;color:var(--sky);font-weight:600;margin-bottom:16px}
.pain-list{margin:0 0 20px}
.pain-list li{
position:relative;padding-left:22px;font-size:14.5px;color:var(--mut);margin-bottom:9px;line-height:1.7;
}
.pain-list li::before{
content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:2px;
background:var(--acc);opacity:.7;transform:rotate(45deg);
}
.mod-list{display:flex;flex-direction:column;gap:12px}
.mod-item{background:#f8fbff;border:1px solid var(--line2);border-radius:12px;padding:16px 18px}
.mod-item h4{font-size:15.5px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.mod-item h4::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--grad);flex:none}
.mod-item p{font-size:14px;color:var(--mut);line-height:1.75;margin:0}
/* ================= 步骤 ================= */
.steps{counter-reset:st;display:grid;gap:20px}
.g6{grid-template-columns:repeat(6,1fr)}
.step{position:relative;text-align:center;padding-top:8px}
.step::before{
counter-increment:st;content:counter(st,decimal-leading-zero);
display:flex;align-items:center;justify-content:center;
width:54px;height:54px;margin:0 auto 16px;border-radius:16px;
background:var(--grad);color:#fff;font-size:17px;font-weight:800;
box-shadow:0 8px 20px rgba(28,78,216,.24);
}
.step:not(:last-child)::after{
content:"";position:absolute;top:34px;left:calc(50% + 36px);right:calc(-50% + 36px);
height:2px;background:linear-gradient(90deg,#cddffb,transparent);
}
.step h4{font-size:16px;margin-bottom:7px}
.step p{font-size:13.5px;color:var(--mut);line-height:1.7;margin:0}
/* ================= 价格 ================= */
.price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.price-card{
background:#fff;border:1.5px solid var(--line);border-radius:var(--rl);
padding:30px 26px;display:flex;flex-direction:column;position:relative;transition:.22s;
}
.price-card:hover{transform:translateY(-5px);box-shadow:var(--sh-h);border-color:#c8daf8}
.price-card.hot{border-color:var(--pri);box-shadow:0 16px 40px rgba(28,78,216,.16)}
.price-card.hot::before{
content:"最受欢迎";position:absolute;top:-12px;left:50%;transform:translateX(-50%);
background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:4px 14px;border-radius:var(--pill);white-space:nowrap;
}
.pc-name{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:6px}
.pc-sub{font-size:13px;color:var(--mut2);margin-bottom:18px;min-height:38px}
.pc-price{font-size:34px;font-weight:800;color:var(--pri);line-height:1;margin-bottom:4px;letter-spacing:-1px}
.pc-price i{font-style:normal;font-size:16px;font-weight:600}
.pc-price em{font-style:normal;font-size:14px;color:var(--mut2);font-weight:500;margin-left:4px}
.pc-note{font-size:12.5px;color:var(--mut2);margin-bottom:20px}
.pc-feat{flex:1;margin-bottom:22px}
.pc-feat li{display:flex;gap:9px;font-size:14px;color:var(--ink2);margin-bottom:10px;line-height:1.6}
.pc-feat svg{color:var(--ok);flex:none;margin-top:4px}
/* ================= 技术栈 ================= */
.stack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stack-box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.stack-box h4{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.stack-box h4 span{width:30px;height:30px;border-radius:9px;background:var(--grad-soft);color:var(--pri);
display:flex;align-items:center;justify-content:center;flex:none}
.stack-items{display:flex;flex-wrap:wrap;gap:8px}
.stack-items span{font-size:13px;color:var(--ink2);background:#f6f9ff;border:1px solid var(--line);border-radius:7px;padding:5px 11px}
/* ================= FAQ ================= */
.faq{max-width:880px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--r);background:#fff;margin-bottom:12px;overflow:hidden;transition:.2s}
.faq-item.on{border-color:#c8daf8;box-shadow:var(--sh)}
.faq-q{
width:100%;display:flex;align-items:center;gap:14px;text-align:left;
padding:20px 24px;background:transparent;border:0;font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-q .qi{
width:26px;height:26px;border-radius:8px;background:#eef4ff;color:var(--pri);flex:none;
display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
}
.faq-q .arw{margin-left:auto;flex:none;color:var(--mut2);transition:transform .25s}
.faq-item.on .faq-q .arw{transform:rotate(180deg);color:var(--pri)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-in{padding:0 24px 22px 64px;font-size:15px;color:var(--mut);line-height:1.9}
.faq-a-in p:last-child{margin-bottom:0}
/* ================= CTA 条 ================= */
.cta-band{background:var(--grad);position:relative;overflow:hidden;padding:52px 0}
.cta-band::before{content:"";position:absolute;width:560px;height:560px;right:-160px;top:-260px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-band::after{content:"";position:absolute;width:380px;height:380px;left:-140px;bottom:-220px;border-radius:50%;background:rgba(255,255,255,.07)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:34px}
.cta-txt h2{color:#fff;font-size:29px;margin-bottom:10px}
.cta-txt p{color:rgba(255,255,255,.86);font-size:16px;margin:0;max-width:560px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;flex:none}
/* ================= 页脚 ================= */
.site-footer{background:#0b1730;color:rgba(255,255,255,.66);padding:64px 0 30px;font-size:14.5px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand .logo{margin-bottom:18px}
.foot-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:22px;max-width:340px}
.foot-contact{display:flex;flex-direction:column;gap:11px}
.foot-contact a,.foot-contact .fc-item{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.78);font-size:14px}
.foot-contact a:hover{color:#7fd4ff}
.foot-contact svg{color:#7fd4ff;flex:none}
.foot-col h4{font-size:16px;color:#fff;margin-bottom:18px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col ul a{color:rgba(255,255,255,.66);font-size:14px}
.foot-col ul a:hover{color:#7fd4ff}
.foot-qr{display:flex;align-items:center;gap:12px;margin-top:22px}
.qr-box{width:88px;height:88px;border-radius:10px;background:#fff;padding:0;flex:none;overflow:hidden}
.foot-qr span{font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.6}
.foot-keywords{
padding:24px 0;border-bottom:1px solid rgba(255,255,255,.1);
font-size:13.5px;line-height:2.1;color:rgba(255,255,255,.5);
}
.foot-keywords b{color:rgba(255,255,255,.72);font-weight:600}
.foot-keywords a{color:rgba(255,255,255,.6);margin-right:14px;white-space:nowrap}
.foot-keywords a:hover{color:#7fd4ff}
.foot-bottom{padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.42)}
.foot-bottom p{margin:0}
/* ================= 浮动条 ================= */
.float-bar{position:fixed;right:20px;bottom:28px;z-index:110;display:flex;flex-direction:column;gap:10px}
.fb-item{
position:relative;width:48px;height:48px;border-radius:14px;background:#fff;border:1px solid var(--line);
display:flex;align-items:center;justify-content:center;color:var(--pri);box-shadow:var(--sh-h);transition:.2s;
}
.fb-item:hover{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-3px)}
.fb-item::after{
content:attr(data-tip);position:absolute;right:calc(100% + 10px);top:50%;transform:translateY(-50%);
background:var(--ink);color:#fff;font-size:12.5px;padding:6px 11px;border-radius:7px;
white-space:nowrap;opacity:0;visibility:hidden;transition:.2s;pointer-events:none;
}
.fb-item:hover::after{opacity:1;visibility:visible}
/* ================= 内页头图 ================= */
.page-hero{
background:linear-gradient(150deg,#0f2a63 0%,#1c4ed8 52%,#0ea5e9 100%);
color:#fff;padding:60px 0 56px;position:relative;overflow:hidden;
}
.page-hero::before{content:"";position:absolute;inset:0;
background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
background-size:52px 52px;opacity:.6}
.page-hero::after{content:"";position:absolute;width:520px;height:520px;right:-180px;top:-240px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.16),transparent 70%)}
.ph-inner{position:relative;z-index:2;max-width:900px}
.page-hero h1{color:#fff;font-size:38px;line-height:1.3;margin-bottom:16px}
.page-hero .ph-lead{font-size:17px;line-height:1.86;color:rgba(255,255,255,.87);margin-bottom:24px;max-width:780px}
.ph-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:26px}
.ph-tags span{font-size:13px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
border-radius:var(--pill);padding:6px 14px;color:#fff}
.ph-btns{display:flex;gap:14px;flex-wrap:wrap}
.ph-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:24px;font-size:14px;color:rgba(255,255,255,.72)}
.ph-meta span{display:flex;align-items:center;gap:7px}
/* 面包屑 */
.crumb{background:#f7faff;border-bottom:1px solid var(--line2);font-size:13.5px}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding:13px 0;color:var(--mut2)}
.crumb li{display:flex;align-items:center;gap:9px}
.crumb li+li::before{content:"/";color:#c3d3ea}
.crumb a{color:var(--mut)}
.crumb a:hover{color:var(--pri)}
.crumb [aria-current]{color:var(--ink2);font-weight:600}
/* ================= 文章正文 ================= */
.prose{max-width:860px}
.prose h2{font-size:26px;margin:44px 0 18px;padding-left:16px;position:relative}
.prose h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--grad)}
.prose h3{font-size:20px;margin:32px 0 14px}
.prose p{font-size:16.5px;line-height:2;color:var(--ink2);margin-bottom:18px}
.prose ul,.prose ol{margin:0 0 20px;padding-left:4px}
.prose ul li,.prose ol li{position:relative;padding-left:24px;font-size:16px;line-height:1.95;color:var(--ink2);margin-bottom:10px}
.prose ul li::before{content:"";position:absolute;left:4px;top:13px;width:7px;height:7px;border-radius:2px;background:var(--sky);transform:rotate(45deg)}
.prose ol{counter-reset:po}
.prose ol li::before{counter-increment:po;content:counter(po);position:absolute;left:0;top:6px;width:19px;height:19px;
background:var(--grad);color:#fff;border-radius:6px;font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center}
.prose blockquote{
margin:24px 0;padding:20px 24px;background:#f6f9ff;border-left:4px solid var(--pri);
border-radius:0 12px 12px 0;color:var(--ink2);font-size:16px;line-height:1.9;
}
.prose strong{color:var(--ink);font-weight:700}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.prose th{background:#f4f8ff;color:var(--ink);font-weight:700}
.prose td{color:var(--ink2)}
.prose img{border-radius:var(--r);margin:22px 0}
.note-box{background:#fff8f0;border:1px solid #ffe0c2;border-radius:var(--r);padding:20px 22px;margin:24px 0}
.note-box b{color:#c25300;display:block;margin-bottom:8px;font-size:15.5px}
.note-box p{font-size:15px;color:#8a5a2b;margin:0;line-height:1.85}
/* ================= 表格 ================= */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff}
table.tbl{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
table.tbl th{background:#f4f8ff;color:var(--ink);font-weight:700;padding:15px 18px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--line)}
table.tbl td{padding:15px 18px;border-bottom:1px solid var(--line2);color:var(--ink2);line-height:1.7}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tbody tr:hover{background:#fafcff}
/* ================= 新闻卡 ================= */
.news-card{display:flex;flex-direction:column;overflow:hidden;padding:0}
.news-cover{
height:150px;background:var(--grad);position:relative;overflow:hidden;
display:flex;align-items:flex-end;padding:16px 20px;
}
.news-cover::before{content:"";position:absolute;inset:0;
background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
background-size:34px 34px}
.news-cover::after{content:"";position:absolute;width:220px;height:220px;right:-70px;top:-90px;border-radius:50%;background:rgba(255,255,255,.12)}
.news-cover.c2{background:linear-gradient(135deg,#0e9f6e,#0ea5e9)}
.news-cover.c3{background:linear-gradient(135deg,#7c3aed,#1c4ed8)}
.news-cat{position:relative;z-index:2;font-size:12.5px;color:#fff;background:rgba(255,255,255,.2);
border:1px solid rgba(255,255,255,.3);border-radius:var(--pill);padding:4px 12px}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-date{font-size:13px;color:var(--mut2);margin-bottom:10px}
.news-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px}
.news-body h3 a{color:var(--ink)}
.news-body h3 a:hover{color:var(--pri)}
.news-body p{font-size:14.5px;color:var(--mut);line-height:1.8;margin-bottom:16px}
/* 新闻列表页 */
.news-list{display:flex;flex-direction:column;gap:22px;max-width:900px}
.news-row{display:flex;gap:26px;background:#fff;border:1px solid var(--line);border-radius:var(--rl);padding:26px;transition:.22s}
.news-row:hover{box-shadow:var(--sh-h);border-color:#d3e0f8;transform:translateY(-3px)}
.news-row-date{flex:none;width:96px;text-align:center;border-right:1px solid var(--line2);padding-right:22px}
.news-row-date b{display:block;font-size:32px;font-weight:800;color:var(--pri);line-height:1;letter-spacing:-1px}
.news-row-date span{font-size:13px;color:var(--mut2)}
.news-row-body h3{font-size:20px;margin-bottom:10px;line-height:1.45}
.news-row-body h3 a{color:var(--ink)}
.news-row-body h3 a:hover{color:var(--pri)}
.news-row-body p{font-size:15px;color:var(--mut);line-height:1.85;margin-bottom:14px}
/* ================= 文章页 ================= */
.article-head{
background:linear-gradient(160deg,#f4f8ff 0%,#eaf3ff 60%,#f7fbff 100%);
border-bottom:1px solid var(--line2);padding:48px 0 42px;position:relative;overflow:hidden;
}
.article-head::after{content:"";position:absolute;width:420px;height:420px;right:-160px;top:-200px;
border-radius:50%;background:radial-gradient(circle,rgba(28,78,216,.10),transparent 68%)}
.article-head-in{position:relative;z-index:2;max-width:820px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;align-items:center}
.at-cat{font-size:12.5px;font-weight:700;color:#fff;background:var(--grad);padding:5px 13px;border-radius:var(--pill)}
.at-tag{font-size:12.5px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:var(--pill);padding:5px 13px}
.article-head h1{font-size:34px;line-height:1.38;letter-spacing:-.3px;margin-bottom:16px}
.article-lead{font-size:16.5px;line-height:1.9;color:var(--mut);margin-bottom:22px;
padding-left:16px;border-left:3px solid #c9dcfa}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:14px;color:var(--mut2)}
.article-meta span{display:flex;align-items:center;gap:7px}
.article-meta svg{color:var(--pri);opacity:.75}
.article-body{max-width:820px}
.article-body h2:first-child{margin-top:0}
.article-foot{margin-top:52px;padding-top:32px;border-top:1px solid var(--line)}
.af-box{background:var(--bg);border:1px solid var(--line);border-radius:var(--rl);padding:30px 32px;text-align:center}
.af-box b{display:block;font-size:19px;color:var(--ink);margin-bottom:10px}
.af-box p{font-size:15px;color:var(--mut);line-height:1.85;margin-bottom:20px}
.af-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* ================= 表单 ================= */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:14px;font-weight:600;color:var(--ink2)}
.form-field label i{font-style:normal;color:var(--acc)}
.form-field input,.form-field select,.form-field textarea{
width:100%;height:48px;padding:0 16px;border:1.5px solid var(--line);border-radius:var(--rs);
background:#fbfdff;color:var(--ink);transition:.2s;
}
.form-field textarea{height:126px;padding:14px 16px;resize:vertical;line-height:1.7}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
outline:0;border-color:var(--pri);background:#fff;box-shadow:0 0 0 4px rgba(28,78,216,.1);
}
.form-tip{font-size:13px;color:var(--mut2);margin-top:12px}
.form-ok{display:none;background:#edfbf4;border:1px solid #b9ecd3;color:#0b7a54;border-radius:var(--rs);
padding:14px 18px;font-size:14.5px;margin-bottom:18px}
.form-ok.show{display:block}
/* ================= 联系信息块 ================= */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ct-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px;text-align:center}
.ct-card .ic{width:52px;height:52px;margin:0 auto 16px;border-radius:14px;background:var(--grad-soft);
color:var(--pri);display:flex;align-items:center;justify-content:center}
.ct-card h4{font-size:16.5px;margin-bottom:8px}
.ct-card p{font-size:14.5px;color:var(--mut);line-height:1.8;margin:0}
.ct-card a{font-weight:600}
/* ================= 优势条 ================= */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv{display:flex;gap:14px;align-items:flex-start}
.adv .ic{width:44px;height:44px;border-radius:12px;background:var(--grad-soft);color:var(--pri);
display:flex;align-items:center;justify-content:center;flex:none}
.adv h4{font-size:16px;margin-bottom:5px}
.adv p{font-size:14px;color:var(--mut);line-height:1.72;margin:0}
/* ================= 滚动显现 ================= */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
/* ================= 双栏内容 ================= */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split.rev>*:first-child{order:2}
.split-txt h2{font-size:30px;margin-bottom:18px}
.split-txt p{font-size:16px;color:var(--mut);line-height:1.9}
.check-list{display:flex;flex-direction:column;gap:13px;margin-top:22px}
.check-list li{display:flex;gap:11px;font-size:15.5px;color:var(--ink2);line-height:1.7}
.check-list svg{color:var(--ok);flex:none;margin-top:4px}
/* ================= 响应式 ================= */
@media (max-width:1080px){
.hero{padding:56px 0 64px}
.hero-inner{grid-template-columns:1fr;gap:44px}
.hero h1{font-size:38px}
.hero-visual{max-width:520px}
.g4,.price-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}
.g6{grid-template-columns:repeat(3,1fr)}
.step:nth-child(3n)::after{display:none}
.panel-grid{grid-template-columns:1fr}
.stack-grid{grid-template-columns:repeat(2,1fr)}
.foot-top{grid-template-columns:1fr 1fr;gap:34px}
.split{grid-template-columns:1fr;gap:30px}
.split.rev>*:first-child{order:0}
.contact-cards{grid-template-columns:1fr}
}
@media (max-width:900px){
/* 关键修复：backdrop-filter 会让 .site-header 成为 fixed 子元素的包含块，
导致抽屉菜单以头部高度为参照、高度被压扁（原 48px）。移动端改用不透明背景。 */
.site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}
.nav-toggle{display:flex;align-items:center;justify-content:center}
.header-act{margin-left:auto}
.header-cta,.header-tel{display:none}
.main-nav{
position:fixed;top:var(--h-hd);left:0;right:0;bottom:0;background:#fff;
padding:6px 24px 34px;overflow-y:auto;margin:0;display:flex;flex-direction:column;
transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
box-shadow:-10px 0 40px rgba(16,42,96,.12);-webkit-overflow-scrolling:touch;
}
.main-nav.open{transform:none}
.main-nav>ul{flex-direction:column;align-items:stretch;gap:0}
.nav-item{border-bottom:1px solid var(--line2);position:relative}
.nav-item:first-child{border-top:1px solid var(--line2)}
.nav-item>a{
padding:16px 58px 16px 2px;font-size:17px;font-weight:600;color:var(--ink);
border-radius:0;line-height:1.5;
}
.nav-item>a:hover,.nav-item.active>a{background:transparent;color:var(--pri)}
.sub-toggle{display:flex;align-items:center;justify-content:center;right:0;width:56px;height:56px}
.sub-menu{
position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;
border:0;border-radius:0;padding:0 0 12px;display:none;min-width:0;background:transparent;
}
.nav-item.open .sub-menu{display:block;animation:fadeUp .26s ease}
.sub-menu li a{
padding:11px 2px 11px 14px;font-size:15.5px;color:var(--mut);border-radius:0;
border-left:2px solid var(--line);margin-bottom:2px;
}
.sub-menu li a:hover{background:transparent;color:var(--pri);border-left-color:var(--pri)}
.nav-item.open .sub-toggle::after{transform:rotate(-135deg) translate(-2px,-2px);border-color:var(--pri)}
.nav-foot{display:flex;flex-direction:column;align-items:stretch;gap:14px;margin-top:auto;padding-top:30px}
.nav-foot .btn{width:100%;height:50px;font-size:16px;justify-content:center}
.nav-tel{
text-align:left;font-size:17px;font-weight:700;color:var(--ink);
display:flex;align-items:center;gap:8px;padding:2px;
}
.nav-tel::before{
content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);flex:none;
box-shadow:0 0 0 4px rgba(14,159,110,.14);
}
.g3{grid-template-columns:repeat(2,1fr)}
.g6{grid-template-columns:repeat(2,1fr)}
.step::after{display:none}
.cta-inner{flex-direction:column;align-items:flex-start;text-align:left}
.hv-float{display:none}
.float-bar{right:10px;bottom:14px;gap:8px}
.fb-item{width:42px;height:42px;border-radius:12px}
.fb-item::after{display:none}
.ph-inner{max-width:100%}
.page-hero h1{font-size:30px}
.sec{padding:60px 0}
.sec-head h2{font-size:26px}
}
@media (max-width:680px){
.wrap{padding:0 18px}
.main-nav{padding-left:18px;padding-right:18px}
.hero h1{font-size:30px}
.hero-lead{font-size:16px}
.g2,.g3,.g4,.price-grid,.adv-grid,.g6,.stack-grid{grid-template-columns:1fr}
.stats-inner{grid-template-columns:repeat(2,1fr);gap:26px 12px}
.stat b{font-size:29px}
.btn{height:44px;padding:0 20px;font-size:15px}
.btn-lg{height:50px;padding:0 26px;font-size:16px}
.hero-btns .btn{flex:1 1 100%}
.form-grid{grid-template-columns:1fr}
.news-row{flex-direction:column;gap:14px;padding:22px}
.news-row-date{width:auto;text-align:left;border-right:0;border-bottom:1px solid var(--line2);padding:0 0 12px;display:flex;align-items:baseline;gap:10px}
.news-row-date b{font-size:24px}
.foot-top{grid-template-columns:1fr}
.foot-bottom{flex-direction:column;gap:8px}
.float-bar{right:12px;bottom:16px}
.fb-item{width:44px;height:44px}
.prose h2{font-size:22px}
.prose p{font-size:16px}
.section-anchor{scroll-margin-top:80px}
}
/* ==========================================================================
设计升级层
1) 深蓝渐变带（对标参考稿）：线稿 UI 图案 + 光晕 + 半透明卡片
2) 浅色区块点缀：细网格纹、渐变光斑
3) 卡片/图标/标题的质感提升
========================================================================== */
/* ---------- A. 深蓝渐变带 ---------- */
.sec-blue{
position:relative;overflow:hidden;color:#fff;
background:linear-gradient(118deg,#0f2f8f 0%,#1c4ed8 45%,#0d7fd0 100%);
}
/* 线稿小程序/APP 界面图案 */
.sec-blue::before{
content:"";position:absolute;inset:0;pointer-events:none;
background-image:url("data:image/svg+xml;charset=utf8,");
background-repeat:no-repeat;background-position:right -70px top -30px;background-size:900px auto;
opacity:.85;
}
/* 左下光晕 */
.sec-blue::after{
content:"";position:absolute;width:700px;height:700px;left:-260px;bottom:-380px;border-radius:50%;pointer-events:none;
background:radial-gradient(circle,rgba(56,189,248,.42),transparent 66%);
}
.sec-blue>.wrap{position:relative;z-index:2}
.sec-blue h2,.sec-blue .sec-head h2{color:#fff}
.sec-blue .sol-card h3,.sec-blue .sol-card h4{color:#fff}
.sec-blue .sec-head .sec-desc{color:rgba(255,255,255,.8)}
.sec-blue .kicker{background:rgba(255,255,255,.14);color:#cfe6ff;border:1px solid rgba(255,255,255,.2)}
/* 深蓝带上的行业卡：半透明玻璃质感 */
.sec-blue .sol-card{
background:linear-gradient(180deg,rgba(255,255,255,.13),rgba(255,255,255,.06));
border:1px solid rgba(255,255,255,.26);
border-radius:16px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
box-shadow:0 10px 30px rgba(4,18,60,.18);
transition:transform .26s,background .26s,border-color .26s,box-shadow .26s;
}
.sec-blue .sol-card:hover{
background:linear-gradient(180deg,rgba(255,255,255,.2),rgba(255,255,255,.1));
border-color:rgba(255,255,255,.55);
transform:translateY(-6px);box-shadow:0 22px 46px rgba(3,14,50,.36);
}
.sec-blue .sol-head span{color:#a8dcff}
.sec-blue .sol-ico{
background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.34);
border-radius:50%;color:#fff;box-shadow:inset 0 0 0 4px rgba(255,255,255,.06);
}
.sec-blue .sol-card>p{color:rgba(255,255,255,.82)}
.sec-blue .sol-mods .tag{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.88)}
.sec-blue .more{color:#9fd8ff}
.sec-blue .more:hover{color:#fff}
/* 深蓝带上的 Tab 与按钮 */
.sec-blue .tabs .tab{
background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:rgba(255,255,255,.88);
}
.sec-blue .tabs .tab:hover{background:rgba(255,255,255,.18);color:#fff;border-color:rgba(255,255,255,.42)}
.sec-blue .tabs .tab.on{background:#fff;color:var(--pri);border-color:#fff;box-shadow:0 8px 22px rgba(3,16,52,.3)}
.sec-blue .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.sec-blue .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff}
.sec-blue .panel-box{background:#fff;box-shadow:0 20px 50px rgba(3,16,52,.3);border-color:transparent}
.sec-blue .mod-item{background:#f7faff;border-color:#e8f0fd}
/* 面板内文字恢复深色（白底卡片） */
.sec-blue .panel-box h3,.sec-blue .panel-box h4,.sec-blue .panel-box b{color:var(--ink)}
.sec-blue .panel-box p,.sec-blue .panel-box li{color:var(--mut)}
.sec-blue .panel-box strong{color:var(--ink2)}
/* 深蓝带上的长文 */
.sec-blue .prose h2,.sec-blue .prose h3{color:#fff}
.sec-blue .prose p,.sec-blue .prose li{color:rgba(255,255,255,.88)}
.sec-blue .prose strong{color:#fff}
.sec-blue .prose a{color:#9fd8ff;text-decoration:underline;text-underline-offset:3px}
.sec-blue .prose a:hover{color:#fff}
/* 可复用的线稿 UI 装饰层（内页头图等） */
.ui-pattern{
position:absolute;inset:0;pointer-events:none;
background-image:url("data:image/svg+xml;charset=utf8,");
background-repeat:no-repeat;background-position:right -60px top -40px;background-size:820px auto;
opacity:.55;
}
@media (max-width:900px){
.ui-pattern{background-position:right -200px top -20px;background-size:660px auto;opacity:.4}
}
/* ---------- B. 浅色区块点缀 ---------- */
.sec-alt{position:relative;overflow:hidden}
.sec-alt::before{
content:"";position:absolute;inset:0;pointer-events:none;
background-image:radial-gradient(rgba(28,78,216,.14) 1px,transparent 1px);
background-size:26px 26px;
-webkit-mask-image:radial-gradient(ellipse 62% 78% at 82% 0%,#000,transparent 72%);
mask-image:radial-gradient(ellipse 62% 78% at 82% 0%,#000,transparent 72%);
}
.sec-alt>.wrap{position:relative;z-index:1}
.sec-alt.sec-blue::before{background-image:none;-webkit-mask-image:none;mask-image:none}
/* 首屏细网格 + 顶部高光 */
.hero{background-image:
radial-gradient(ellipse 70% 60% at 78% 8%,rgba(28,78,216,.10),transparent 60%),
linear-gradient(160deg,#f4f8ff 0%,#eaf3ff 44%,#f7fbff 100%);}
.hero-inner::before{
content:"";position:absolute;left:-60px;right:-60px;top:-40px;bottom:-40px;z-index:0;pointer-events:none;
background-image:linear-gradient(rgba(28,78,216,.05) 1px,transparent 1px),
linear-gradient(90deg,rgba(28,78,216,.05) 1px,transparent 1px);
background-size:54px 54px;
-webkit-mask-image:radial-gradient(ellipse 66% 78% at 34% 44%,#000,transparent 74%);
mask-image:radial-gradient(ellipse 66% 78% at 34% 44%,#000,transparent 74%);
}
.hero-inner>*{position:relative;z-index:2}
/* ---------- C. 组件质感 ---------- */
/* 区块标题：小标签带渐变短线 */
.kicker{
position:relative;border-radius:var(--pill);
background:linear-gradient(135deg,#eef4ff,#e6f6ff);
border:1px solid #dbe7fb;
}
.kicker::before{
content:"";display:inline-block;width:16px;height:3px;border-radius:2px;
background:var(--grad);margin-right:8px;vertical-align:middle;position:relative;top:-2px;
}
/* 卡片：顶部渐变细线常显 + 悬浮渐变描边 */
.card,.stack-box,.adv,.price-card{position:relative}
.card::before{
content:"";position:absolute;left:22px;right:22px;top:0;height:2px;border-radius:0 0 3px 3px;
background:var(--grad);opacity:0;transition:opacity .26s,left .26s,right .26s;
}
.card:hover::before{opacity:1;left:0;right:0}
.svc-ico{position:relative;border:1px solid #dbe7fb}
.svc-ico::after{
content:"";position:absolute;inset:-5px;border-radius:19px;border:1px dashed rgba(28,78,216,.22);opacity:0;transition:opacity .26s;
}
.card:hover .svc-ico::after{opacity:1}
/* 优势项 */
.adv{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px;
display:flex;gap:16px;transition:transform .22s,box-shadow .22s,border-color .22s}
.adv:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#d3e0f8}
.adv .ic{width:48px;height:48px;border-radius:14px;background:var(--grad-soft);color:var(--pri);
display:flex;align-items:center;justify-content:center;flex:none}
.adv h4{font-size:17px;margin-bottom:7px}
.adv p{font-size:14.5px;color:var(--mut);line-height:1.8;margin:0}
/* 数据条：加纹理与分隔 */
.stats{position:relative;overflow:hidden}
.stats::before{
content:"";position:absolute;inset:0;pointer-events:none;
background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);background-size:22px 22px;
-webkit-mask-image:linear-gradient(90deg,transparent,#000 30%,#000 70%,transparent);
mask-image:linear-gradient(90deg,transparent,#000 30%,#000 70%,transparent);
}
.stats-inner{position:relative;z-index:1}
.stat{position:relative}
.stat+.stat::before{content:"";position:absolute;left:-10px;top:14%;bottom:14%;width:1px;background:rgba(255,255,255,.18)}
/* CTA 条：补线稿纹理 */
.cta-band::before,.cta-band::after{pointer-events:none}
.cta-band{background-image:linear-gradient(118deg,#0f2f8f 0%,#1c4ed8 48%,#0d7fd0 100%)}
.cta-inner{position:relative;z-index:2}
.cta-deco{
position:absolute;inset:0;pointer-events:none;opacity:.5;
background-image:url("data:image/svg+xml;charset=utf8,");
background-repeat:no-repeat;background-position:left -20px center;background-size:420px auto;
}
/* 步骤：连接线更精致 */
.step::before{background:linear-gradient(140deg,#1c4ed8,#0ea5e9);border-radius:50%}
.step:not(:last-child)::after{background:linear-gradient(90deg,rgba(28,78,216,.4),rgba(28,78,216,.05))}
@media (max-width:900px){
.sec-blue::before{background-position:right -160px top -20px;opacity:.55}
.sec-blue::after{width:460px;height:460px;left:-200px;bottom:-260px}
.sec-alt::before{-webkit-mask-image:radial-gradient(ellipse 80% 60% at 70% 0%,#000,transparent 70%);
mask-image:radial-gradient(ellipse 80% 60% at 70% 0%,#000,transparent 70%)}
.stat+.stat::before{display:none}
.cta-deco{display:none}
}
@media (max-width:680px){
.sec-blue::before{background-position:right -230px top 0;background-size:760px auto;opacity:.42}
}
@media print{
.site-header,.float-bar,.cta-band,.site-footer{display:none}
body{padding-top:0}
.sec-blue::before,.sec-blue::after,.sec-alt::before,.ui-pattern,.cta-deco,.hero-inner::before{display:none !important}
.sec-blue{background:#fff !important;color:#000}
.sec-blue h2,.sec-blue .sol-card h3{color:#000}
}