:root{
  --ink:#10203d;--text:#182338;--muted:#66758f;--line:#dfe7f3;--white:#fff;
  --blue:#2f67f6;--blue2:#5c8cff;--violet:#7657ef;--cyan:#2bb7d8;--green:#20a47a;
  --page:#edf3ff;--soft:#f5f8ff;--shadow:0 18px 55px rgba(35,62,116,.10);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.7;background:linear-gradient(180deg,#edf3ff 0,#f6f8fd 44%,#eef5ff 100%);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}
.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:14px;top:14px;z-index:1000;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(248,251,255,.92);border-bottom:1px solid rgba(201,215,239,.72);backdrop-filter:blur(18px)}
.header-inner{min-height:72px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;font-size:18px;font-weight:850;color:#10203d;white-space:nowrap}.brand-mark{width:29px;height:29px;border-radius:10px;margin-right:10px;background:linear-gradient(145deg,#2f67f6,#7657ef);box-shadow:0 8px 20px rgba(59,93,214,.25);position:relative}.brand-mark:after{content:"";position:absolute;inset:8px;border:2px solid #fff;border-radius:50%}.header-inner nav{display:flex;gap:26px;margin-right:auto;font-size:14px;color:#33435d}.header-inner nav a{padding:9px 0}.header-inner nav a:hover{color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:14px;background:linear-gradient(135deg,#2f67f6,#4f7cf4);color:#fff;font-weight:760;box-shadow:0 11px 25px rgba(47,103,246,.20);transition:.18s}.btn:hover{transform:translateY(-2px);box-shadow:0 15px 34px rgba(47,103,246,.26)}.btn-small{padding:10px 16px;font-size:13px}.btn-secondary{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.32);box-shadow:none;color:#fff}
/* home hero */
.hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(circle at 79% 28%,rgba(121,94,240,.50),transparent 24%),radial-gradient(circle at 9% 8%,rgba(54,193,234,.24),transparent 25%),linear-gradient(125deg,#142a62 0%,#2459c9 51%,#633fc4 100%)}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(to bottom,#000,transparent 92%)}
.hero:after{content:"";position:absolute;width:560px;height:560px;border-radius:50%;border:1px solid rgba(255,255,255,.09);right:-260px;bottom:-300px;box-shadow:0 0 0 78px rgba(255,255,255,.025),0 0 0 156px rgba(255,255,255,.014)}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:58px;align-items:center;min-height:570px;padding:60px 0 72px}.hero-copy{max-width:650px}.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 12px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(255,255,255,.10);color:#eaf1ff;font-size:13px;font-weight:760;margin-bottom:20px}.eyebrow i{width:7px;height:7px;border-radius:50%;background:#8be2ff;box-shadow:0 0 0 5px rgba(139,226,255,.12)}.hero h1{font-size:clamp(43px,5vw,62px);line-height:1.08;letter-spacing:-.045em;margin:0 0 22px}.hero h1 span{background:linear-gradient(90deg,#a9d6ff,#ded1ff);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{font-size:18px;color:#dae5ff;max-width:620px;margin:0}.actions{display:flex;gap:12px;flex-wrap:wrap}.hero .actions{margin-top:29px}.hero-pills{display:flex;gap:8px;flex-wrap:wrap;margin-top:21px}.hero-pills span{padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.09);color:#e6eeff;font-size:12px}
.phone-stage{position:relative;min-height:470px;display:flex;align-items:center;justify-content:center}.phone-glow{position:absolute;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(144,198,255,.38),rgba(120,81,231,.15) 48%,transparent 72%);filter:blur(10px)}.phone{position:relative;width:300px;padding:9px;background:#111629;border-radius:34px;border:1px solid rgba(255,255,255,.18);box-shadow:0 35px 75px rgba(10,20,58,.45);transform:rotate(1.2deg)}.phone:before{content:"";position:absolute;top:15px;left:50%;transform:translateX(-50%);width:70px;height:18px;background:#111629;border-radius:20px;z-index:2}.phone img{display:block;width:100%;height:auto;border-radius:26px}
/* home quick cards */
.quick-strip{position:relative;z-index:5;margin-top:-31px}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quick-card{position:relative;overflow:hidden;border-radius:20px;padding:21px;border:1px solid rgba(211,224,247,.95);background:rgba(255,255,255,.96);box-shadow:0 16px 44px rgba(31,67,130,.10);transition:.18s}.quick-card:after{content:"";position:absolute;width:105px;height:105px;border-radius:50%;right:-53px;top:-55px;background:rgba(67,113,245,.07)}.quick-card:hover{transform:translateY(-3px);box-shadow:0 22px 52px rgba(31,67,130,.15)}.quick-icon{width:40px;height:40px;border-radius:13px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e9f1ff,#f0ecff);color:#2f67f6;font-weight:900;margin-bottom:13px}.quick-card:nth-child(2){background:linear-gradient(145deg,#fff,#f6f2ff)}.quick-card:nth-child(3){background:linear-gradient(145deg,#fff,#effbf8)}.quick-card:nth-child(4){background:linear-gradient(145deg,#fff,#fff5ed)}.quick-card h3{margin:0 0 6px;font-size:17px}.quick-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
/* homepage sections */
.home-section{padding:72px 0}.home-section.alt{background:linear-gradient(180deg,#f7faff 0%,#eaf2ff 100%);border-top:1px solid rgba(205,220,245,.55);border-bottom:1px solid rgba(205,220,245,.55)}.section-head{max-width:720px;margin-bottom:28px}.section-kicker{display:inline-block;font-size:12px;font-weight:850;letter-spacing:.05em;color:#2f67f6;background:#e7f0ff;border:1px solid #d4e3ff;border-radius:999px;padding:5px 9px;margin-bottom:11px}.home-section h2{font-size:clamp(29px,3.2vw,41px);line-height:1.16;letter-spacing:-.035em;margin:0 0 12px;color:#12213d}.section-head p{margin:0;color:#687690}.steps,.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step,.card{position:relative;overflow:hidden;border-radius:20px;padding:22px;border:1px solid #dce7f7;background:#fff;box-shadow:0 12px 35px rgba(43,77,139,.055)}.step small{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:11px;background:linear-gradient(135deg,#e7efff,#f1ecff);color:#2f67f6;font-weight:850}.step h3,.card h3{font-size:18px;margin:12px 0 6px}.step p,.card p{font-size:14px;color:#687690;margin:0}.card:nth-child(2){background:linear-gradient(145deg,#fff,#f4f8ff)}.card:nth-child(3){background:linear-gradient(145deg,#fff,#f4f1ff)}.card:nth-child(4){background:linear-gradient(145deg,#fff,#f0fbf8)}
.feature-split{display:grid;grid-template-columns:.92fr 1.08fr;gap:54px;align-items:center}.shot-panel{position:relative;min-height:510px;display:flex;align-items:center;justify-content:center;border-radius:30px;background:radial-gradient(circle at 20% 15%,rgba(92,140,255,.21),transparent 28%),linear-gradient(145deg,#dceaff,#f1eaff);border:1px solid #d6e2f4;box-shadow:0 24px 70px rgba(52,77,128,.10)}.shot-panel:after{content:"节点";position:absolute;top:24px;left:24px;padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.74);color:#465a78;font-size:12px;font-weight:760}.shot-panel img{width:300px;height:auto;border-radius:24px;box-shadow:0 24px 58px rgba(34,56,105,.20)}.feature-copy>p{font-size:17px;color:#65738c}.feature-list{display:grid;gap:12px;margin-top:24px}.feature-item{display:flex;gap:13px;align-items:flex-start;padding:16px;border-radius:17px;background:#fff;border:1px solid #dbe6f5;box-shadow:0 10px 26px rgba(37,67,121,.04)}.feature-item b{display:flex;width:29px;height:29px;align-items:center;justify-content:center;flex:0 0 29px;border-radius:9px;background:#eaf1ff;color:#2f67f6}.feature-item strong{display:block;margin-bottom:3px}.feature-item span{display:block;color:#697790;font-size:13px}
.cta-band{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:38px 42px;border-radius:28px;color:#fff;background:radial-gradient(circle at 82% 0%,rgba(255,255,255,.16),transparent 28%),linear-gradient(125deg,#245fd5,#5148d4 58%,#7141bd);box-shadow:0 26px 70px rgba(55,68,168,.22)}.cta-band:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;border:1px solid rgba(255,255,255,.12);right:-90px;top:-140px}.cta-band h2{font-size:31px;margin:0 0 7px}.cta-band p{margin:0;color:#dce8ff}.cta-band .btn{background:#fff;color:#2f59c9;box-shadow:none}
/* content pages */
.content-wrap{position:relative;padding:42px 0 84px}.page-atmosphere{position:absolute;z-index:-1;left:0;right:0;top:72px;height:310px;background:linear-gradient(125deg,#dce9ff,#edf1ff 58%,#eee5ff);border-top:1px solid rgba(206,219,242,.7);border-bottom:1px solid rgba(206,219,242,.7)}.theme-help .page-atmosphere{background:linear-gradient(125deg,#dff6f3,#e8f7ff 58%,#e9f0ff)}.theme-pricing .page-atmosphere{background:linear-gradient(125deg,#eee5ff,#f7ecff 58%,#e5edff)}.theme-features .page-atmosphere{background:linear-gradient(125deg,#e7e9ff,#e3f4ff 58%,#eef0ff)}.theme-trust .page-atmosphere{background:linear-gradient(125deg,#e8edf4,#eef4fb 58%,#e6effd)}
.breadcrumbs{display:flex;gap:8px;align-items:center;flex-wrap:wrap;width:max-content;max-width:100%;margin:0 0 20px;padding:7px 12px;border:1px solid rgba(203,217,239,.95);border-radius:999px;background:rgba(255,255,255,.82);font-size:13px;color:#66758f;box-shadow:0 8px 22px rgba(35,63,113,.04)}.breadcrumbs span{display:flex;gap:8px}.breadcrumbs b{font-weight:400;color:#9aa8bc}
.article{position:relative;overflow:hidden;max-width:940px;margin:auto;padding:48px clamp(28px,5vw,58px);border-radius:28px;border:1px solid rgba(205,218,239,.95);background:rgba(255,255,255,.96);box-shadow:0 28px 80px rgba(40,67,120,.12)}.article:before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:linear-gradient(90deg,#2f67f6,#47b6e4,#7657ef)}.theme-help .article:before{background:linear-gradient(90deg,#2fa8c8,#20a47a)}.theme-pricing .article:before{background:linear-gradient(90deg,#7657ef,#c954c1)}.theme-features .article:before{background:linear-gradient(90deg,#5869e9,#2bb7d8)}
.page-label{display:inline-flex;align-items:center;gap:9px;margin:0 0 17px;padding:7px 11px;border-radius:999px;background:#eaf2ff;border:1px solid #d7e5fd;color:#2f67f6;font-size:11px;letter-spacing:.08em;font-weight:850}.page-label b{letter-spacing:0;color:#556984;font-size:12px}.theme-help .page-label{color:#16866e;background:#e9f9f5;border-color:#cfefe6}.theme-pricing .page-label{color:#7657ef;background:#f3ecff;border-color:#e6d8ff}.theme-features .page-label{color:#4e5ed5;background:#edf0ff;border-color:#dfe4ff}.theme-trust .page-label{color:#607087;background:#eef2f7;border-color:#dfe6ef}
.article h1{max-width:760px;font-size:clamp(34px,4.4vw,50px);line-height:1.18;letter-spacing:-.035em;margin:0 0 18px;color:#12213d}.lead{max-width:780px;margin:0 0 34px;font-size:18px;line-height:1.8;color:#576985}.article section{margin:24px 0}.article section:not(.next){padding:22px 24px;border-radius:18px;border:1px solid #e2eaf6;background:linear-gradient(145deg,#f9fbff,#fff);box-shadow:0 8px 26px rgba(43,75,128,.035)}.article section:not(.next):nth-of-type(even){background:linear-gradient(145deg,#f5f9ff,#fbf8ff)}.article h2{font-size:23px;line-height:1.35;letter-spacing:-.018em;margin:0 0 13px;color:#1b2a45}.article section:not(.next) h2:before{content:"";display:inline-block;width:8px;height:8px;border-radius:3px;margin-right:9px;vertical-align:3px;background:#2f67f6;box-shadow:0 0 0 5px rgba(47,103,246,.09)}.theme-help .article section:not(.next) h2:before{background:#20a47a;box-shadow:0 0 0 5px rgba(32,164,122,.09)}.theme-pricing .article section:not(.next) h2:before{background:#7657ef;box-shadow:0 0 0 5px rgba(118,87,239,.09)}.article p{margin:10px 0}.article ul{padding-left:1.3em}.article li{margin:7px 0}.article li::marker{color:#2f67f6}.inline-links{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}.inline-links a{display:inline-flex;align-items:center;padding:9px 12px;border-radius:11px;border:1px solid #d8e5fa;background:#edf4ff;color:#2f67f6;font-weight:740;font-size:14px}.inline-links a:hover{background:#e4edff}.next{margin-top:32px!important;padding:21px 23px!important;border:1px solid #dbe6fa!important;border-radius:19px!important;background:linear-gradient(135deg,#ebf3ff,#f3efff)!important}.next h2{font-size:19px!important}.next h2:before{display:none!important}.notice{padding:14px 16px;border-radius:13px;background:#fff5de;border:1px solid #f0dbad}.table-wrap{overflow:auto;border:1px solid #dfe8f4;border-radius:15px;background:#fff}table{border-collapse:collapse;width:100%;min-width:480px}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid #e5ebf4}th{font-size:13px;background:#f4f8ff}tr:last-child td{border-bottom:0}.sources{display:flex;gap:13px;flex-wrap:wrap;margin-top:28px;padding:13px 15px;border-radius:13px;background:#f4f7fb;color:#718098;font-size:13px}.sources a{text-decoration:underline}.content-figure{margin:22px 0;padding:17px;border:1px solid #dce7f6;border-radius:21px;background:linear-gradient(145deg,#ecf3ff,#f4edff)}.content-figure img{display:block;width:min(100%,420px);height:auto;margin:auto;border-radius:18px;box-shadow:0 18px 46px rgba(44,67,117,.14)}.content-figure figcaption{margin-top:8px;text-align:center;color:#75839a;font-size:12px}
/* hub pages */
.content-hub .article{max-width:1040px}.hub-sections{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px;margin-top:26px}.hub-link-section{position:relative;overflow:hidden;border-radius:19px;border:1px solid #dce7f6;background:linear-gradient(145deg,#fff,#f5f9ff);box-shadow:0 12px 32px rgba(38,69,124,.05)}.hub-link-section:nth-child(2n){background:linear-gradient(145deg,#fff,#f7f3ff)}.theme-help .hub-link-section:nth-child(2n){background:linear-gradient(145deg,#fff,#effbf8)}.hub-link-section section{margin:0!important;padding:23px!important;border:0!important;background:transparent!important;box-shadow:none!important}.hub-link-section h2{font-size:20px;margin-bottom:10px}.hub-link-section:after{content:"↗";position:absolute;right:18px;bottom:14px;color:#a8bce1;font-size:22px}.content-hub .inline-links{padding-right:22px}.content-hub .inline-links a{background:#fff}
/* footer */
.site-footer{position:relative;overflow:hidden;padding:52px 0 26px;color:#e9effb;background:linear-gradient(135deg,#10204a,#17275a 54%,#2b2765)}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:36px}.footer-grid div{display:flex;flex-direction:column;gap:9px}.footer-grid strong{margin-bottom:5px}.footer-grid a{color:#b8c7e3;font-size:14px}.footer-grid a:hover{color:#fff}.footer-brand p{max-width:280px;margin:9px 0 0;color:#9fb1d1;font-size:13px}.footnote{margin-top:36px;padding-top:19px;border-top:1px solid rgba(255,255,255,.11);font-size:12px;color:#8fa2c4}
/* responsive */
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:28px;min-height:auto;padding:52px 0 86px}.hero-copy{max-width:none}.phone-stage{min-height:390px}.phone{width:270px}.quick-grid,.steps,.cards{grid-template-columns:1fr 1fr}.feature-split{grid-template-columns:1fr}.shot-panel{min-height:460px}.footer-grid{grid-template-columns:1fr 1fr}.header-inner{gap:16px}.header-inner nav{gap:17px}.hub-sections{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.wrap{width:min(100% - 28px,1160px)}.header-inner{min-height:68px;height:auto;flex-wrap:wrap;padding:9px 0;gap:9px}.header-inner nav{order:3;width:100%;display:flex;gap:17px;overflow:auto;white-space:nowrap;padding:2px 0 4px;scrollbar-width:none}.header-inner nav::-webkit-scrollbar{display:none}.btn-small{padding:9px 12px}.hero-grid{padding:43px 0 76px}.hero h1{font-size:40px}.hero p{font-size:16px}.phone-stage{min-height:340px}.phone{width:235px}.quick-strip{margin-top:-26px}.quick-grid,.steps,.cards,.hub-sections,.footer-grid{grid-template-columns:1fr}.home-section{padding:54px 0}.shot-panel{min-height:410px}.shot-panel img{width:255px}.feature-split{gap:30px}.cta-band{align-items:flex-start;flex-direction:column;padding:29px}.content-wrap{padding:28px 0 60px}.page-atmosphere{top:64px;height:255px}.breadcrumbs{font-size:12px}.article{padding:32px 20px;border-radius:22px}.article h1{font-size:35px}.lead{font-size:17px}.article section:not(.next){padding:19px 17px}.content-figure img{width:min(100%,320px)}}

/* V7 platform and content refinements */
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.platform-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin:26px 0 8px}
.platform-card{position:relative;overflow:hidden;padding:22px;border-radius:20px;border:1px solid #dce7f6;background:linear-gradient(145deg,#fff,#f4f8ff);box-shadow:0 12px 34px rgba(38,69,124,.06)}
.platform-card:nth-child(2){background:linear-gradient(145deg,#fff,#effbf7)}.platform-card:nth-child(3){background:linear-gradient(145deg,#fff,#f5f2ff)}.platform-card:nth-child(4){background:linear-gradient(145deg,#fff,#fff6ee)}
.platform-card .platform-icon{width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:900;color:#2f67f6;background:#e8f0ff;margin-bottom:14px;font-size:18px}
.platform-card:nth-child(2) .platform-icon{color:#16866e;background:#e4f7f1}.platform-card:nth-child(3) .platform-icon{color:#7657ef;background:#efeaff}.platform-card:nth-child(4) .platform-icon{color:#c76a26;background:#fff0e3}
.platform-card h3{margin:0 0 7px;font-size:18px}.platform-card p{margin:0 0 14px;color:#687690;font-size:14px}.platform-card a{font-weight:780;color:#2f67f6;font-size:14px}
.content-hub .hub-intro{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;margin:24px 0}.hub-note{padding:20px;border-radius:18px;background:linear-gradient(145deg,#eef5ff,#f7f2ff);border:1px solid #dce6f6}.hub-note strong{display:block;margin-bottom:6px}.hub-note p{margin:0;color:#687690}
.guide-path{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}.guide-path div{padding:18px;border-radius:16px;background:#fff;border:1px solid #e0e8f4}.guide-path b{display:block;color:#2f67f6;margin-bottom:5px}.guide-path p{margin:0;color:#66758f;font-size:14px}
@media(max-width:900px){.platform-grid{grid-template-columns:1fr 1fr}.content-hub .hub-intro{grid-template-columns:1fr}.guide-path{grid-template-columns:1fr}}
@media(max-width:650px){.platform-grid{grid-template-columns:1fr}}