:root{--navy:#031559;--navy2:#082676;--blue:#176af3;--cyan:#13d4eb;--ink:#0c214f;--text:#21304c;--muted:#637493;--pale:#f1f6fc;--line:#d8e4f2;--white:#fff;--shadow:0 24px 70px rgba(3,21,89,.14)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:#fff;font:16px/1.72 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button{font:inherit}.container{width:min(1200px,calc(100% - 64px));margin:auto}.eyebrow{font-size:14px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);font-weight:900}.kicker{font-size:15px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);font-weight:900}.display{font-size:clamp(46px,6vw,86px);line-height:1.03;letter-spacing:-.06em;margin:18px 0 24px;font-weight:900}.title{font-size:clamp(36px,4.6vw,64px);line-height:1.08;letter-spacing:-.05em;color:var(--ink);margin:14px 0 20px}.title.light{color:#fff}.lead{font-size:19px;line-height:1.75;color:var(--muted);max-width:690px}.lead.light{color:#c8d9ff}.btns{display:flex;gap:14px;align-items:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid transparent;border-radius:999px;padding:15px 26px;font-size:16px;font-weight:900;transition:.25s;cursor:pointer}.btn:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(23,106,243,.25)}.primary{background:var(--cyan);color:var(--navy)}.white{background:#fff;color:var(--navy)}.ghost{color:#fff;border-color:rgba(255,255,255,.45)}.dark-btn{background:var(--navy);color:#fff}.outline{border-color:#a7c1e9;color:var(--ink)}.pill{display:inline-flex;border:1px solid rgba(255,255,255,.35);padding:7px 13px;border-radius:99px;color:#dceaff;font-size:14px}.site-header{position:absolute;z-index:20;top:0;left:0;right:0;color:#fff;background:rgba(3,21,89,.58);backdrop-filter:blur(16px);border-bottom:1px solid 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transparent;cursor:pointer;font-size:16px;font-weight:800}.tab.active{color:#fff;border-color:var(--cyan)}.list-check{list-style:none;padding:0;margin:26px 0}.list-check li{display:flex;gap:11px;margin:15px 0;font-size:16px;color:var(--muted)}.list-check li:before{content:"✓";color:var(--blue);font-weight:900}.dark .list-check li{color:#c7d8ff}.process{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:42px}.step{position:relative;padding:28px 20px;border-top:2px solid #bed0ea}.step:before{content:attr(data-step);position:absolute;top:-20px;left:18px;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:var(--navy);font-weight:900}.step h3{margin:0;color:var(--ink);font-size:21px}.step p{margin:8px 0 0;color:var(--muted);font-size:15px}.dark .step{border-color:rgba(255,255,255,.28)}.dark .step h3{color:#fff}.dark .step p{color:#bfd2f3}.faq{max-width:860px;margin:34px auto}.faq-item{border-bottom:1px solid 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@media(max-width:1100px){.nav{gap:14px;font-size:15px}.header-actions .lang{display:none}.header-actions .btn{font-size:14px;padding:11px 16px}.hero-inner{grid-template-columns:1fr .9fr;gap:35px}.container{width:min(100% - 42px,860px)}}
@media(max-width:860px){.nav{display:none}.menu-toggle{display:block}.nav.open{display:flex;position:absolute;top:86px;left:20px;right:20px;flex-direction:column;align-items:flex-start;gap:0;padding:16px 22px;border:1px solid rgba(255,255,255,.2);border-radius:18px;background:rgba(3,21,89,.98);box-shadow:0 20px 60px rgba(0,0,0,.3)}.nav.open a{width:100%;padding:13px 0;font-size:17px}.nav.open a.active:after{display:none}.hero-inner{grid-template-columns:1fr;min-height:900px}.hero{min-height:900px}.hero-card{max-width:560px;margin-bottom:34px}.metrics{grid-template-columns:repeat(3,1fr)}.metric:nth-child(3){border:0}.split{grid-template-columns:1fr;gap:45px}.split.reverse>div:first-child,.split.reverse>div:last-child{order:initial}.feature-grid{grid-template-columns:repeat(2,1fr)}.stat-row{grid-template-columns:repeat(2,1fr)}.process{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.3fr repeat(2,1fr)}}
@media(max-width:600px){.container{width:calc(100% - 32px)}.header-inner{height:82px}.brand-name{font-size:18px}.brand-name small{font-size:10px}.header-actions .btn{display:none}.page-hero{padding:140px 0 82px}.display{font-size:46px}.section{padding:80px 0}.screen{min-height:auto}.hero-inner{min-height:820px;padding-top:90px}.hero{min-height:820px}.hero-card{margin-bottom:12px}.metrics{grid-template-columns:repeat(2,1fr);padding:16px 0}.metric{border-right:0;border-bottom:1px solid var(--line);padding:14px 10px}.feature-grid{grid-template-columns:1fr}.section-head{display:block}.stat-row{grid-template-columns:1fr 1fr}.process{grid-template-columns:1fr}.step{border-top:0;border-left:2px solid #bed0ea}.step:before{left:-21px;top:22px}.cta{padding:34px 24px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:9px}.data-card{margin-inline:-6px}.tab{padding-inline:10px}}
/* 首页第 2 屏：外层负责背景与留白，内层负责统计卡片网格。 */
section.metrics{display:block;background:#fff;padding:0}
section.metrics>.container.metrics{width:min(1200px,calc(100% - 64px));margin:auto;display:grid;grid-template-columns:repeat(5,1fr);gap:0;padding:28px 0}
@media(max-width:860px){section.metrics>.container.metrics{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){section.metrics>.container.metrics{width:calc(100% - 32px);grid-template-columns:repeat(2,1fr);padding:16px 0}}
/* 防止统计容器被外层网格当成单独一列。 */
section.metrics{display:block!important;grid-template-columns:none!important;width:100%!important}
section.metrics>.container.metrics{display:grid!important;grid-column:1/-1!important;grid-template-columns:repeat(5,minmax(0,1fr))!important;width:min(1200px,calc(100% - 64px))!important;max-width:none!important;margin:0 auto!important;gap:0!important}
section.metrics>.container.metrics .metric{min-width:0!important;width:auto!important}
section.metrics>.container.metrics .metric span{display:block;white-space:normal;word-break:keep-all;overflow-wrap:normal;line-height:1.7}
@media(max-width:860px){section.metrics>.container.metrics{grid-template-columns:repeat(3,minmax(0,1fr))!important}}
@media(max-width:600px){section.metrics>.container.metrics{width:calc(100% - 32px)!important;grid-template-columns:repeat(2,minmax(0,1fr))!important}}