:root{--wc-ink:#111114;--wc-muted:#6d6d73;--wc-line:#e6e6ea;--wc-soft:#f7f7f8;--wc-dark:#0a0b0d;--wc-dark2:#111318;--wc-darkline:#25282e;--wc-darkmuted:#9297a1}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,Segoe UI,Arial,sans-serif;color:var(--wc-ink);background:#fff;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}
.wc-header{height:72px;border-bottom:1px solid var(--wc-line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:relative;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(16px)}
.wc-header-inner,.wc-footer-inner{width:min(1180px,100%);margin:auto;display:flex;align-items:center;gap:24px}.wc-header-inner{justify-content:space-between}.wc-brand{display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:-.035em;white-space:nowrap}.wc-mark{width:28px;height:28px;border:1.5px solid #111;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:800}.wc-page{color:#8a8a90;font-weight:550}.wc-page:before{content:"·";margin:0 9px;color:#b4b4ba}.wc-nav{display:flex;align-items:center;gap:22px;font-size:12px;color:#5f6067}.wc-nav a:hover,.wc-nav a.active{color:#111}.wc-nav .wc-outline{border:1px solid #cfcfd5;border-radius:18px;padding:8px 13px;color:#222;font-weight:650}.wc-menu{display:none}
.wc-footer{border-top:1px solid var(--wc-line);padding:28px;color:#777;font-size:12px;background:#fff}.wc-footer-inner{justify-content:space-between}.wc-footer-links{display:flex;gap:18px;flex-wrap:wrap}.wc-footer-links a:hover{color:#111}
.wc-dark{background:var(--wc-dark);color:#e9ebef}.wc-dark .wc-header{background:rgba(10,11,13,.94);border-color:var(--wc-darkline)}.wc-dark .wc-mark{border-color:#f2f3f5}.wc-dark .wc-page{color:#777d88}.wc-dark .wc-nav{color:#8f949e}.wc-dark .wc-nav a:hover,.wc-dark .wc-nav a.active{color:#fff}.wc-dark .wc-nav .wc-outline{border-color:#353941;color:#f0f1f3}.wc-dark .wc-footer{background:var(--wc-dark);border-color:var(--wc-darkline);color:#747984}.wc-dark .wc-footer-links a:hover{color:#fff}
.wc-wrap{width:min(1180px,calc(100% - 48px));margin:auto}.wc-hero{padding:90px 0 75px}.wc-kicker{font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:#777;font-weight:750;margin-bottom:20px}.wc-dark .wc-kicker{color:#777e88}.wc-hero h1{font-size:clamp(44px,7vw,82px);line-height:.98;letter-spacing:-.065em;margin:0;max-width:900px}.wc-hero h1 span{color:#8b8c92}.wc-dark .wc-hero h1 span{color:#737883}.wc-hero p{max-width:720px;font-size:18px;line-height:1.6;color:var(--wc-muted);margin:25px 0 0}.wc-dark .wc-hero p{color:var(--wc-darkmuted)}
.wc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px}.wc-btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 17px;border-radius:22px;border:1px solid #d4d5da;font-size:12px;font-weight:700}.wc-btn.primary{background:#111;color:#fff;border-color:#111}.wc-btn.secondary{background:#fff}.wc-dark .wc-btn{border-color:#34373e;background:#15171b;color:#e8e9ed}.wc-dark .wc-btn.primary{background:#f3f4f6;color:#0a0b0d;border-color:#f3f4f6}
.wc-section{border-top:1px solid var(--wc-line);padding:70px 0}.wc-dark .wc-section{border-color:var(--wc-darkline)}.wc-section h2{font-size:clamp(30px,4vw,50px);letter-spacing:-.055em;line-height:1.03;margin:0 0 28px}.wc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--wc-line);border:1px solid var(--wc-line);border-radius:20px;overflow:hidden}.wc-card{background:#fff;padding:28px;min-height:210px}.wc-card h3{font-size:19px;letter-spacing:-.025em;margin:0 0 9px}.wc-card p{font-size:13px;line-height:1.65;color:var(--wc-muted);margin:0}.wc-num{font:700 10px ui-monospace,monospace;color:#96979e;margin-bottom:45px}.wc-dark .wc-grid{background:var(--wc-darkline);border-color:var(--wc-darkline)}.wc-dark .wc-card{background:#101216}.wc-dark .wc-card p{color:#9297a1}.wc-dark .wc-num{color:#6f747e}
.wc-panel{border:1px solid var(--wc-line);border-radius:20px;padding:28px;background:#fff}.wc-dark .wc-panel{border-color:var(--wc-darkline);background:#101216}.wc-code{font:12px/1.65 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f5f5f6;border:1px solid #e3e3e7;border-radius:13px;padding:17px;overflow:auto;white-space:pre-wrap}.wc-dark .wc-code{background:#0b0c0f;border-color:#24272d;color:#cfd3da}.wc-table{width:100%;border-collapse:collapse;font-size:12px}.wc-table th,.wc-table td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--wc-line);vertical-align:top}.wc-dark .wc-table th,.wc-dark .wc-table td{border-color:var(--wc-darkline)}.wc-table th{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#85878e}.wc-table td.mono{font-family:ui-monospace,monospace;font-size:11px}
.wc-note{padding:15px 17px;border:1px solid var(--wc-line);border-radius:13px;background:var(--wc-soft);font-size:12px;line-height:1.6;color:#606169}.wc-dark .wc-note{border-color:var(--wc-darkline);background:#111318;color:#9ca1ab}.wc-status{display:inline-flex;align-items:center;gap:7px;font-size:10px;font-weight:750;text-transform:uppercase;letter-spacing:.06em}.wc-dot{width:7px;height:7px;border-radius:50%;background:#22a06b}.wc-small{font-size:11px;color:#85878f;line-height:1.6}
.wc-input{height:46px;width:100%;border:1px solid #d4d5da;border-radius:10px;padding:0 13px;font:13px inherit;outline:none;background:#fff;color:#111}.wc-input:focus{border-color:#111}.wc-dark .wc-input{background:#0b0c0f;border-color:#34373e;color:#f1f2f4}.wc-dark .wc-input:focus{border-color:#fff}.wc-form{display:flex;gap:8px}.wc-form .wc-input{flex:1}
@media(max-width:850px){.wc-nav{display:flex;gap:12px;max-width:52vw;overflow-x:auto;scrollbar-width:none}.wc-nav::-webkit-scrollbar{display:none}.wc-nav a{white-space:nowrap}.wc-menu{display:none}.wc-header{height:64px;padding:0 18px}.wc-wrap{width:min(100% - 36px,1180px)}.wc-hero{padding:62px 0 55px}.wc-grid{grid-template-columns:1fr}.wc-card{min-height:auto}.wc-footer-inner{display:block}.wc-footer-links{margin:15px 0}.wc-form{flex-direction:column}.wc-form .wc-btn{width:100%}.wc-section{padding:55px 0}}

/* WaterChain navigation standard */
.wc-header{position:sticky !important;top:0;z-index:1000;}
.wc-footer-links{display:flex;align-items:center;justify-content:center;gap:18px 24px;flex-wrap:wrap;}
.wc-footer-links a{white-space:nowrap;}
@media(max-width:850px){.wc-footer-links{justify-content:flex-start;gap:14px 20px;}}

/* WaterChain persistent header */
.wc-header{position:sticky !important;top:0;z-index:5000;}

/* WaterChain global sticky header */
.wc-header{position:sticky !important;top:0 !important;left:auto !important;right:auto !important;width:100%;z-index:5000 !important;}


/* WaterChain final global fixed header */
.wc-header{position:fixed !important;top:0 !important;left:0 !important;right:0 !important;width:100% !important;z-index:10000 !important;}
body{padding-top:72px;}
@media(max-width:850px){body{padding-top:64px;}}


/* WaterChain universal fixed header enforcement */
.wc-header{position:fixed !important;top:0 !important;left:0 !important;right:0 !important;width:100% !important;z-index:99999 !important;}
body{padding-top:72px !important;}
@media(max-width:850px){body{padding-top:64px !important;}}

/* WaterChain global header standard */
.wc-header{position:fixed!important;top:0!important;left:0!important;right:0!important;width:100%!important;z-index:10000!important}
body{padding-top:72px!important}
@media(max-width:850px){body{padding-top:64px!important}}

.wc-text-link{display:inline-block;margin-top:18px;font-size:11px;font-weight:750;color:#5f636c}.wc-text-link:hover{text-decoration:underline;color:#111}.wc-dark .wc-text-link{color:#cfd3da}.wc-dark .wc-text-link:hover{color:#fff}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}