:root{--bg:#f5f5f7;--surface:#ffffff;--surface-2:#fbfbfd;--text:#1d1d1f;--text-2:#6e6e73;--text-3:#86868b;--accent:#0071e3;--accent-2:#0077ed;--accent-soft:#e8f2fc;--danger:#d70015;--border:rgba(60,60,67,0.12);--shadow-sm:0 1px 2px rgba(0,0,0,0.04),0 6px 16px rgba(0,0,0,0.05);--shadow-md:0 2px 6px rgba(0,0,0,0.05),0 18px 44px rgba(0,0,0,0.10);--radius:20px;--radius-sm:14px;--radius-xs:10px;--font:"Inter",-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--mono:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation 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var(--accent);outline-offset:2px}.skip-link{position:absolute;left:var(--sp-3);top:-60px;z-index:100;padding:var(--sp-3) var(--sp-4);border-radius:10px;background:var(--text);color:#fff;font-size:14px;font-weight:600;transition:top 0.2s var(--ease)}.skip-link:focus{top:var(--sp-3)}button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;-webkit-tap-highlight-color:transparent}ul,ol{margin:0;padding:0;list-style:none}.container{width:100%;max-width:960px;margin-inline:auto;padding-inline:var(--sp-4);padding-left:max(var(--sp-4),var(--safe-left));padding-right:max(var(--sp-4),var(--safe-right))}.site-header{position:sticky;top:0;z-index:30;background:rgba(245,245,247,0.82);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--border);padding-top:var(--safe-top)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:52px;gap:var(--sp-2)}.brand{display:inline-flex;align-items:center;gap:var(--sp-2);color:var(--text);font-weight:600;font-size:15px;letter-spacing:-0.01em;flex:none}.brand:hover{text-decoration:none}.brand-mark{width:26px;height:26px;color:var(--accent)}.nav{flex:1 1 auto;min-width:0;display:flex;align-items:center;justify-content:flex-end;gap:2px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 12px,#000 calc(100% - 12px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 12px,#000 calc(100% - 12px),transparent 100%)}.nav::-webkit-scrollbar{display:none}.nav a{flex:none;color:var(--text-2);font-size:13px;font-weight:500;padding:8px 10px;border-radius:980px;white-space:nowrap;transition:color 0.2s var(--ease),background-color 0.2s var(--ease)}.nav a:hover{color:var(--text);background:rgba(0,0,0,0.05);text-decoration:none}.hero{padding:var(--sp-5) 0 var(--sp-3);text-align:center}.hero h1{margin:0 0 var(--sp-2);font-size:clamp(26px,6.5vw,44px);font-weight:700;letter-spacing:-0.02em;line-height:1.12;text-wrap:balance}.hero-sub{margin:0 auto;max-width:520px;color:var(--text-2);font-size:15px;line-height:1.6}.email-tool{padding-top:var(--sp-4)}.email-card{position:relative;background:var(--surface);border:1px solid rgba(60,60,67,0.08);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--sp-4) var(--sp-3)}.email-address{display:block;width:100%;min-height:56px;font-family:var(--mono);font-size:clamp(15px,4.2vw,28px);font-weight:600;letter-spacing:-0.01em;color:var(--text);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:var(--sp-3) var(--sp-2);text-align:center;word-break:break-all;cursor:pointer;transition:border-color 0.2s var(--ease),box-shadow 0.2s var(--ease)}.email-address:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.email-address.skeleton{color:transparent;background:linear-gradient(90deg,var(--surface-2) 25%,#e8e8ed 50%,var(--surface-2) 75%);background-size:200% 100%;animation:shimmer 1.4s infinite linear;border-color:transparent;-webkit-user-select:none;user-select:none}.actions{display:flex;flex-wrap:wrap;gap:var(--sp-2);justify-content:center;margin-top:var(--sp-3)}.actions .btn{flex:1 1 auto;min-width:128px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);min-height:48px;padding:0 20px;font-size:16px;font-weight:500;border-radius:980px;border:1px solid transparent;transition:background-color 0.2s var(--ease),color 0.2s var(--ease),transform 0.12s var(--ease),box-shadow 0.2s var(--ease)}.btn svg{width:16px;height:16px}.btn:active{transform:scale(0.96)}.btn.is-spinning svg{animation:spin 0.8s linear 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rgba(60,60,67,0.12);border-radius:var(--radius);padding:var(--sp-4);text-align:left;box-shadow:0 1px 2px rgba(0,0,0,0.03),0 12px 32px rgba(0,0,0,0.06);transition:box-shadow 0.2s var(--ease),border-color 0.2s var(--ease)}.mail-card:hover{border-color:rgba(60,60,67,0.2);box-shadow:0 2px 4px rgba(0,0,0,0.04),0 18px 44px rgba(0,0,0,0.09)}.mail-card:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(0,113,227,0.28)}.mail-card.unread{border-color:rgba(0,113,227,0.22);background:#fbfdff}.mail-head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--sp-3)}.mail-sender{margin:0;min-width:0;font-size:18px;font-weight:700;letter-spacing:-0.01em;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mail-time{flex:none;font-size:12px;font-weight:500;color:var(--text-3)}.mail-email{margin:var(--sp-1) 0 var(--sp-4);font-size:13px;font-weight:500;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mail-subject{margin:0;font-size:16px;font-weight:600;letter-spacing:-0.015em;line-height:1.4;color:var(--text);word-break:break-word}.mail-subject::before,.mail-body::before{content:'Subject';display:block;margin-bottom:var(--sp-1);font-size:11px;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-3)}.mail-body::before{content:'Message';margin-top:var(--sp-4)}.inbox-empty{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--sp-7) var(--sp-5);text-align:center}.loader{position:relative;width:64px;height:64px;margin:0 auto var(--sp-4);color:var(--accent)}.loader-ring{position:absolute;inset:0;border-radius:50%;border:3px solid var(--accent-soft);border-top-color:var(--accent);animation:spin 1s linear 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solid var(--border)}.mail-copy{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);width:100%;min-height:48px;padding:0 var(--sp-6);font-size:16px;font-weight:600;border:0;border-radius:980px;background:var(--accent);color:#fff;cursor:pointer;box-shadow:0 1px 3px rgba(0,113,227,0.25);transition:background-color 0.2s var(--ease),transform 0.12s var(--ease)}.mail-copy:hover{background:var(--accent-2)}.mail-copy:active{transform:scale(0.97)}.mail-copy:disabled{opacity:0.55;cursor:default}.mail-copy svg{width:16px;height:16px}.page{padding:var(--sp-5) 0 var(--sp-7)}.page h1{margin:0 0 var(--sp-1);font-size:clamp(24px,5.5vw,38px);font-weight:700;letter-spacing:-0.02em;text-wrap:balance}.page-lede{margin:0 0 var(--sp-5);color:var(--text-2);font-size:16px;line-height:1.6}.page-section{background:var(--surface);border:1px solid rgba(60,60,67,0.08);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--sp-4);margin-bottom:var(--sp-3)}.page-section h2{margin:0 0 var(--sp-3);font-size:18px;font-weight:700;letter-spacing:-0.01em}.page-section p,.page-section li{color:var(--text-2);font-size:15px;line-height:1.7}.page-section p{max-width:68ch}.page-section ul{margin:var(--sp-2) 0;padding-left:var(--sp-4);list-style:disc}.page-section li+li{margin-top:var(--sp-1)}.contact-methods{display:grid;gap:var(--sp-3)}.contact-methods a,.contact-methods button{display:flex;align-items:center;gap:var(--sp-3);min-height:48px;padding:var(--sp-4);border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--text);font:inherit;font-weight:500;width:100%;text-align:left;cursor:pointer;transition:border-color 0.2s var(--ease),background-color 0.2s var(--ease)}.contact-methods a:hover,.contact-methods button:hover{border-color:var(--accent);background:#fff;text-decoration:none}.contact-methods svg{width:20px;height:20px;color:var(--accent)}.copy-email{font:inherit;color:var(--accent);padding:0;border:0;background:none;cursor:pointer;text-decoration:underline}.copy-email:hover{color:var(--accent-2)}.breadcrumb{margin:0 0 var(--sp-3);padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:var(--sp-1);font-size:13px;color:var(--text-3)}.breadcrumb li{display:flex;align-items:center;gap:var(--sp-1)}.breadcrumb li+li::before{content:'/';color:var(--text-3);opacity:0.6}.breadcrumb a{color:var(--text-2)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb [aria-current='page']{color:var(--text-3);font-weight:500}.link-grid{display:grid;gap:var(--sp-2);grid-template-columns:1fr}.link-grid a{display:flex;align-items:center;min-height:48px;padding:var(--sp-3) var(--sp-4);border:1px solid var(--border);border-radius:12px;background:var(--surface-2);color:var(--text);font-size:15px;font-weight:500;transition:border-color 0.2s var(--ease),background-color 0.2s var(--ease)}.link-grid a:hover{border-color:var(--accent);background:#fff;text-decoration:none}.how-steps{margin:var(--sp-3) 0 0;padding:0;list-style:none;counter-reset:step;display:grid;gap:var(--sp-4)}.how-steps li{position:relative;padding-left:52px;counter-increment:step}.how-steps li::before{content:counter(step);position:absolute;left:0;top:2px;width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center}.how-steps h3{margin:0 0 var(--sp-1);font-size:16px;font-weight:600;color:var(--text)}.how-steps p{margin:0;color:var(--text-2);font-size:15px;line-height:1.7}.use-note{margin:var(--sp-4) 0 0;padding:var(--sp-3) var(--sp-4);background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);font-size:14px;color:var(--text-2);line-height:1.7}.site-footer{border-top:1px solid var(--border);padding:var(--sp-5) 0 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(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;transition-duration:0.01ms !important}}@media (max-width:359px){.hero h1{font-size:24px}.hero-sub{font-size:14px}.email-card{padding:var(--sp-3)}.email-address{font-size:14px;padding:var(--sp-3) var(--sp-1)}.actions .btn{min-width:0;flex-basis:100%}.mail-card{padding:var(--sp-3)}.mail-sender{font-size:17px}.page-section{padding:var(--sp-3)}.page-section h2{font-size:17px}}@media (min-width:360px){.link-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:480px) and (max-width:599px){.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-4) var(--sp-5)}.footer-cols nav:last-child{grid-column:1 / -1}}@media (min-width:600px){.container{padding-inline:24px}.header-inner{height:56px}.brand{font-size:17px}.brand-mark{width:28px;height:28px}.nav{gap:var(--sp-1)}.nav a{font-size:14px;padding:var(--sp-2) var(--sp-3)}.hero{padding-top:var(--sp-6)}.hero h1{font-size:clamp(30px,5.4vw,44px)}.hero-sub{font-size:17px}.email-tool{padding-top:var(--sp-5)}.actions{gap:var(--sp-3)}.btn{padding:0 24px}.inbox{padding-top:var(--sp-6)}.inbox-head h2{font-size:20px}.inbox-list{gap:var(--sp-4)}.email-card{padding:var(--sp-5) var(--sp-4)}.mail-card{padding:var(--sp-5)}.mail-copy{width:auto;min-width:240px}.page{padding:var(--sp-6) 0 var(--sp-8)}.page h1{font-size:clamp(28px,5vw,38px)}.page-lede{font-size:17px;margin-bottom:var(--sp-6)}.page-section{padding:var(--sp-5);margin-bottom:var(--sp-4)}.page-section h2{font-size:19px}.link-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-6)}.footer-cols{grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--sp-5)}}@media (min-width:1024px){.page{padding:var(--sp-8) 0 72px}.inbox{padding-bottom:64px}.footer-inner{gap:64px}.mobile-nav{display:none}}