:root{color-scheme:light;--ink:#152944;--muted:#61718a;--blue:#1459ed;--line:#e4eaf3;--pale:#f3f7fd;--font:Inter,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;font-family:var(--font);color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:#f2f6fc;min-height:100vh;font-size:16px;line-height:1.55}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #5593ff;outline-offset:4px}input:focus,textarea:focus{outline:2px solid #7ba7ff;outline-offset:2px}button{touch-action:manipulation}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:16px;top:-100px;z-index:10;padding:12px;background:white}.skip-link:focus{top:10px}
.site-header{max-width:1320px;margin:auto;padding:29px 42px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:23px}.brand img{width:162px;height:auto}.brand-caption{font-size:14px;font-weight:600;border-left:1px solid #cbd6e6;padding-left:23px;line-height:1.7}.brand-caption span{display:block;font-size:10px;letter-spacing:1.5px;color:var(--muted)}.header-right{display:flex;align-items:center;gap:36px;font-size:14px}.language-label{white-space:nowrap;font-weight:600}.language-label>span:first-child{color:#aebad0;margin:0 8px}.home-link{display:grid;grid-template-columns:auto 16px;column-gap:10px;font-size:14px;line-height:1.4;color:#435776}.home-link span[lang]{font-size:12px;grid-column:1}.home-link span:last-child{grid-column:2;grid-row:1/3;font-size:22px;align-self:center}.home-link:hover{color:var(--blue)}
.workspace{max-width:1236px;margin:8px auto 0;display:grid;grid-template-columns:337px minmax(0,1fr);gap:26px;align-items:stretch}.intro{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(160deg,#092d70 4%,#1049ad 67%,#1d62ec);border-radius:26px;color:white;padding:33px 34px;display:flex;flex-direction:column;justify-content:space-between;min-height:0}.intro:after{content:"Z";font-family:Arial,sans-serif;font-weight:900;font-style:italic;line-height:1;position:absolute;right:-80px;bottom:68px;font-size:380px;letter-spacing:-48px;z-index:-1;color:rgba(255,255,255,.042);transform:rotate(-6deg)}.intro-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.eyebrow{font-size:11px;letter-spacing:2.3px;color:#b9d2ff;font-weight:600}.intro-symbol{font-size:26px;color:#a7c6ff}.hello{font-size:17px;line-height:1.8;color:#d7e7ff;margin:0 0 23px}.hello span{display:block;font-size:15px;letter-spacing:.1px}.intro h1{font-size:43px;line-height:1.42;letter-spacing:1.3px;font-weight:600;margin:0}.intro h1>span{display:block;font-size:35px;line-height:1.18;letter-spacing:-1px;font-weight:400;color:#b6d2ff;margin-top:20px}.intro-detail{font-size:14px;line-height:1.9;color:#e0ebff;margin:30px 0 18px;max-width:250px}.intro-detail span{display:block;font-size:14px;color:#b9d2ff}.intro-bottom p{font-size:14px;margin:17px 0 0;line-height:1.9;color:#eef4ff}.intro-bottom p span{display:block;font-size:12px;color:#b9d2ff}.small-line{width:33px;height:2px;background:#8eb5ff;display:block}
.support{min-width:0;min-height:0;background:white;border:1px solid #e1e8f4;border-radius:26px;box-shadow:0 13px 38px #1b41800a;overflow:hidden;display:flex;flex-direction:column}.support-heading{padding:26px 30px 23px;display:flex;align-items:center;justify-content:space-between;gap:15px}.support-title{display:flex;align-items:center;gap:13px}.avatar{background:#edf3ff;border:1px solid #dce7fd;color:var(--blue);font-family:Arial,sans-serif;font-weight:900;font-style:italic;font-size:30px;width:50px;height:50px;border-radius:16px;display:grid;place-items:center;padding-right:4px}.support-title h2{font-size:19px;line-height:1.4;margin:0;font-weight:650;letter-spacing:.1px}.support-title p{font-size:13px;color:var(--muted);margin:2px 0 0}.connection{display:flex;align-items:center;gap:8px;border:1px solid var(--line);padding:7px 12px;border-radius:10px;background:#fbfcfe;white-space:nowrap;line-height:1.5}.status-mark{width:6px;height:6px;border-radius:50%;background:#7d8da8}.connection[data-state=ready] .status-mark{background:#22836d}.connection[data-state=error] .status-mark{background:#ae7427}.connection b{display:block;font-size:12px;font-weight:500}.connection small{display:block;font-size:11px;color:var(--muted)}.tabs{display:flex;border-top:1px solid #f0f3f8;border-bottom:1px solid var(--line);padding:0 30px;gap:30px}.tab{background:none;border:0;border-bottom:2px solid transparent;color:var(--muted);padding:15px 9px 13px;display:flex;align-items:center;gap:10px;position:relative;bottom:-1px;line-height:1.4;min-height:70px}.tab svg{width:23px;height:23px}.tab>span{font-size:15px;font-weight:600;text-align:left}.tab small{display:block;font-size:12px;font-weight:400;margin-top:3px}.tab[aria-selected=true]{color:var(--blue);border-bottom-color:var(--blue)}.tab:hover{color:var(--blue)}
.chat-panel{display:flex;flex:1 1 0%;flex-direction:column;min-height:0;overflow:hidden}.messages{height:auto;min-height:0;flex:1 1 0%;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:auto;overflow-anchor:none;scrollbar-gutter:stable;padding:23px 30px 20px;scrollbar-width:auto;scrollbar-color:#d5deed transparent}.conversation-label{text-align:center;font-size:12px;color:#8390a5;margin:1px 0 26px}.conversation-label>span:first-child{margin:0 8px}.message{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px}.message-avatar{flex:0 0 28px;width:28px;height:28px;border-radius:9px;background:var(--blue);color:white;font-size:16px;font-weight:900;font-style:italic;text-align:center;line-height:28px;font-family:Arial,sans-serif;padding-right:2px}.message-content{max-width:86%;min-width:0}.sender{font-size:12px;line-height:1.4;margin:0 0 7px;color:#61718a;font-weight:600}.sender span{font-size:11px;font-weight:400;margin-left:6px}.bubble{background:var(--pale);padding:16px 19px;border:1px solid #eaf0f8;border-radius:0 17px 17px 17px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:15px;line-height:1.85}.bubble p{margin:0;white-space:normal}.bubble .welcome-title{font-weight:600;margin-bottom:5px}.bubble .translation{color:#61718a;line-height:1.65;font-size:14px;margin-top:12px;padding-top:12px;border-top:1px solid #dfe7f2}.user{justify-content:flex-end}.user .bubble{background:var(--blue);color:white;border-color:var(--blue);border-radius:17px 0 17px 17px}.user .sender{text-align:right}.delivery{font-size:11px;margin-top:4px;color:var(--muted);text-align:right}.delivery[data-state=failed]{color:#a35f16}.quick-start{margin-left:38px;margin-top:25px}.quick-start>p{font-size:12px;color:var(--muted);margin:0 0 12px}.quick-start>p span{margin-left:8px}.quick-buttons{display:flex;gap:9px;flex-wrap:wrap}.quick-buttons button{font-size:14px;border:1px solid #dce6f8;background:white;color:#294c83;padding:9px 12px;text-align:left;border-radius:10px;transition:background .15s,border-color .15s}.quick-buttons button span{display:block;font-size:11px;margin-top:2px;color:#617ca4}.quick-buttons button:hover{background:#eef4ff;border-color:#a8c5fa}.composer-wrap{padding:12px 30px 19px}.composer{display:flex;align-items:flex-end;background:white;border:1.5px solid #ccd9ed;border-radius:15px;padding:12px;gap:12px;box-shadow:0 4px 16px #234e9510}.composer:focus-within{border-color:#4d89f3;box-shadow:0 0 0 3px #edf3ff}.composer textarea{flex:1;min-width:0;max-height:150px;resize:none;border:0;background:none;outline:none;box-shadow:none;font-size:15px;line-height:1.7;padding:2px 4px;color:var(--ink)}.composer textarea:focus{outline:none}.composer textarea::placeholder{color:#8b99ae}.send-button{border:0;border-radius:10px;background:var(--blue);color:white;display:flex;align-items:center;justify-content:center;gap:11px;min-height:51px;padding:7px 14px;min-width:86px;flex-shrink:0;font-size:14px;line-height:1.4}.send-button small{display:block;font-size:11px}.send-button svg{width:21px;height:21px}.send-button:not(:disabled):hover,.primary-button:hover{background:#0645c9}.composer-meta{display:flex;justify-content:space-between;gap:10px;color:#7f8da2;font-size:11px;margin-top:11px}.composer-meta>span:first-child span{margin-left:5px}.support-footer{display:flex;justify-content:center;align-items:center;gap:13px;padding:0 30px 17px;color:#8b98ab;font-size:11px}.footer-line{height:1px;background:var(--line);width:25px}
.notice{display:flex;gap:14px;align-items:center;justify-content:space-between;margin:16px 25px 0;padding:13px 15px;background:#fff8ea;border:1px solid #f0dfb8;border-radius:12px;color:#7c5821;font-size:13px}.notice strong{font-weight:600;display:block}.notice span{display:block;font-size:12px}.notice button{background:white;border:1px solid #e4cfaa;border-radius:8px;color:inherit;padding:7px 11px;flex-shrink:0;font-size:12px}.form-error{border-radius:8px;background:#fff4ed;color:#934517;padding:10px 13px;margin-bottom:12px;font-size:13px;white-space:pre-wrap}.pending{color:var(--muted)}.pending .bubble{font-size:13px;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{50%{opacity:.6}}
.ticket-panel{padding:23px 30px;flex:1 1 0%;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:auto}.ticket-panel h3{font-size:20px;margin:0 0 4px;font-weight:600}.ticket-panel h3+p{font-size:14px;color:var(--muted);margin:0 0 12px}.ticket-note{font-size:13px;color:var(--muted);margin:0 0 20px}.ticket-note span{display:block;font-size:12px}.ticket-panel label{display:block;font-size:14px;font-weight:600;margin-bottom:14px}.ticket-panel label small{font-size:12px;margin-left:5px;color:var(--muted);font-weight:400}.ticket-panel input,.ticket-panel textarea{display:block;width:100%;margin-top:7px;background:#fcfdff;border:1px solid #d4deed;border-radius:10px;padding:11px 12px;font-size:15px;color:var(--ink)}.ticket-panel textarea{resize:vertical;min-height:108px}.form-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:16px}.primary-button{display:flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;color:white;background:var(--blue);padding:12px 20px;font-size:15px;width:100%;min-height:48px}.primary-button span[lang]{font-size:13px;color:#d5e3ff}.primary-button span:last-child{margin-left:5px}.form-footnote{font-size:12px;color:var(--muted);text-align:center;margin:10px 0 0}.form-footnote span{display:block;font-size:11px}.ticket-success{text-align:center;padding:45px 10px}.success-icon{display:grid;place-items:center;width:65px;height:65px;border-radius:50%;background:#e5f3ee;color:#288167;font-size:30px;margin:0 auto 20px}.ticket-success>p{font-size:14px;color:var(--muted)}.secondary-button{background:#eef4ff;color:var(--blue);border:1px solid #cadbf8;border-radius:10px;padding:11px 16px;font-size:14px}.secondary-button span{font-size:12px}.site-footer{max-width:1236px;margin:22px auto 25px;display:flex;align-items:center;justify-content:space-between;color:#8090a6;font-size:12px}.site-footer>span:last-child{font-size:11px}.site-footer>span:last-child>span:first-child{margin:0 8px}.noscript{position:fixed;bottom:0;left:0;right:0;background:#fff2da;color:#653f00;padding:18px;text-align:center}
@media(min-width:1500px){.workspace{margin-top:28px}.site-footer{margin-top:30px}}
@media(max-width:1320px){.workspace{margin-left:32px;margin-right:32px}.site-footer{margin-left:36px;margin-right:36px}.site-header{padding-left:36px;padding-right:36px}.workspace{grid-template-columns:300px minmax(0,1fr)}.intro{padding:30px}.intro h1{font-size:39px}}
@media(max-width:1000px){.workspace{grid-template-columns:255px minmax(0,1fr);gap:19px;margin-left:22px;margin-right:22px}.intro{padding:26px;min-height:0}.intro h1{font-size:33px}.intro h1>span{font-size:30px}.intro-detail{font-size:13px}.support-heading{padding:23px}.tabs{padding:0 23px}.messages{padding-left:23px;padding-right:23px}.composer-wrap{padding-left:23px;padding-right:23px}.quick-buttons{gap:8px}.quick-buttons button{font-size:13px}.composer-meta>span:last-child{display:none}.header-right{gap:23px}.ticket-panel{padding:23px}.form-grid{grid-template-columns:1fr;gap:0}}
@media(max-width:760px){.site-header{padding:22px 20px}.brand{gap:14px}.brand img{width:134px}.brand-caption{display:none}.language-label{font-size:12px}.home-link{display:none}.workspace{display:block;margin:0 14px}.intro{min-height:auto;border-radius:20px;padding:23px 24px 25px;margin-bottom:16px}.intro-top{display:none}.intro-copy{display:grid;grid-template-columns:1fr auto;gap:0 16px;align-items:center}.hello{display:none}.intro h1{font-size:25px;line-height:1.45;letter-spacing:0}.intro h1 br{display:none}.intro h1>span{font-size:18px;margin-top:5px;letter-spacing:0;line-height:1.5}.intro h1>span br{display:none}.intro h1>span br:after{content:" "}.intro-detail{font-size:12px;margin:0;max-width:160px;line-height:1.8}.intro-detail span{font-size:11px;line-height:1.7}.intro-bottom{display:none}.intro:after{font-size:210px;bottom:-30px;right:18px;color:#ffffff08}.support{min-height:0;border-radius:20px}.support-heading{padding:20px}.avatar{width:43px;height:43px;border-radius:13px;font-size:27px}.support-title h2{font-size:17px}.support-title p{font-size:12px}.connection{padding:5px 8px}.connection b{font-size:11px}.connection small{font-size:10px}.tabs{padding:0 18px;gap:22px}.tab{min-height:65px;padding:12px 7px}.tab>span{font-size:14px}.tab small{font-size:11px}.tab svg{width:21px}.messages{padding:18px;min-height:0;max-height:none}.conversation-label{margin-bottom:22px;font-size:11px}.bubble{padding:13px 14px;font-size:15px}.message-content{max-width:90%}.message-avatar{width:24px;flex-basis:24px;height:24px;font-size:14px;line-height:24px}.message{gap:8px}.sender span{font-size:10px}.quick-start{margin-left:32px;margin-top:22px}.quick-start>p{font-size:11px}.quick-buttons button{padding:8px 10px;font-size:12px}.quick-buttons button span{font-size:10px}.composer-wrap{padding:12px 17px 16px;margin-top:auto}.composer{padding:9px;gap:6px}.composer textarea{font-size:16px;line-height:1.7;min-height:65px}.send-button{min-width:65px;padding:9px;gap:5px}.send-button svg{width:17px}.composer-meta{font-size:10px}.support-footer{font-size:10px}.ticket-panel{padding:21px 20px}.ticket-panel input,.ticket-panel textarea{font-size:16px}.ticket-panel h3{font-size:19px}.ticket-panel label small{font-size:11px}.notice{margin:13px 16px 0;padding:11px;font-size:12px}.notice span{font-size:11px}.site-footer{margin:20px 22px 24px;font-size:11px;gap:12px;flex-wrap:wrap}.site-footer>span:last-child{font-size:10px}}
@media(max-width:380px){.intro-copy{grid-template-columns:1fr}.intro-detail{margin-top:12px;max-width:none}.intro-detail span{display:inline;margin-left:4px}.intro h1{font-size:24px}.support-title{gap:9px}.support-heading{padding:17px}.support-title h2{font-size:16px}.messages{padding:16px 12px}.quick-buttons{gap:5px}.quick-buttons button{padding:7px}.quick-buttons button span{font-size:9px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important;transition:none!important}}
.bubble{font-size:16px}.connection b{font-size:13px}.connection small{font-size:12px}
@media(max-width:760px){.intro-copy{display:block}.intro-detail{display:none}.quick-start{display:none}.intro{padding:20px 24px}.intro h1{font-size:24px}.intro h1>span{font-size:17px}}

/* A definite height gives the flex child a real scrollable viewport. */
.support { height:clamp(730px,calc(100vh - 160px),890px); height:clamp(730px,calc(100dvh - 160px),890px); }
.support-heading,.tabs,.notice,.composer-wrap,.support-footer,.conversation-tools { flex-shrink:0; }
.messages,.ticket-panel { -webkit-overflow-scrolling:touch; }
.messages:focus-visible { outline:2px solid #7ba7ff; outline-offset:-3px; }
.header-right { gap:25px; }
.account-link,.history-link { display:flex; align-items:center; gap:12px; font-size:14px; font-weight:600; line-height:1.45; }
.account-link small,.history-link small { display:block; font-size:11px; font-weight:400; }
.account-link { padding:10px 15px; background:#fff; color:var(--blue); border:1px solid #d3e0f8; border-radius:11px; }
.account-link:hover { background:#eaf1ff; border-color:#8eb5ff; }
.history-link { color:#435776; }
.history-link:hover { color:var(--blue); }
.intro { gap:24px; }
.hello { margin-bottom:14px; }
.intro-detail { margin-top:22px; }
.account-card { padding-top:21px; border-top:1px solid #ffffff30; }
.account-eyebrow { font-size:10px; color:#b9d2ff; letter-spacing:1.7px; }
.account-card h2 { margin:9px 0; font-size:17px; font-weight:600; line-height:1.7; }
.account-card h2>span { display:block; font-size:13px; font-weight:400; color:#d5e5ff; }
.account-card p { margin:9px 0 17px; font-size:12px; line-height:1.8; }
.account-card p span { font-size:11px; line-height:1.7; margin-top:5px; }
.account-card a { display:flex; align-items:center; flex-wrap:wrap; gap:5px 9px; padding:11px 12px; border:1px solid #ffffff50; border-radius:10px; font-size:13px; background:#ffffff0d; }
.account-card a>span[lang] { font-size:11px; color:#d6e5ff; }
.account-card a>span[aria-hidden] { margin-left:auto; }
.account-card a:hover { background:#ffffff1f; }
.conversation-tools { display:flex; justify-content:space-between; align-items:center; gap:7px; min-height:43px; padding:2px 30px; border-top:1px solid #f0f3f8; }
.conversation-tools button { background:transparent; border:0; border-radius:6px; padding:5px 0; color:var(--blue); font-size:12px; text-align:left; line-height:1.6; }
.conversation-tools button>span { font-size:11px; margin-left:5px; }
.conversation-tools button:hover:not(:disabled) { text-decoration:underline; }
.conversation-tools button:disabled { color:#61718a; opacity:.65; }
#jump-latest { white-space:nowrap; }
.save-hint { font-size:11px; line-height:1.7; color:var(--muted); margin:9px 0 0; }
.save-hint>span { display:block; font-size:10px; }
.support-footer { padding-top:2px; color:#536c91; }
.support-footer a { text-align:center; }
.support-footer a:hover { color:var(--blue); text-decoration:underline; }
.support-footer span[lang] { margin-left:6px; }
.conversation-attachment { margin:4px 0 17px; padding:13px; border:1px solid #dce6f8; background:#f5f8ff; border-radius:11px; }
.conversation-attachment .checkbox-label { display:flex; align-items:flex-start; gap:10px; margin:0; cursor:pointer; }
.checkbox-label input[type=checkbox] { flex:0 0 18px; width:18px; height:18px; margin:4px 0 0; accent-color:var(--blue); }
.checkbox-label>span>small { display:block; margin:0; }
.conversation-attachment>p { font-size:12px; margin:9px 0 0; color:var(--muted); line-height:1.7; }
.conversation-attachment>p>span { display:block; font-size:11px; }
.conversation-attachment details { margin-top:10px; }
.conversation-attachment summary { font-size:12px; cursor:pointer; color:var(--blue); }
.conversation-attachment summary span { font-size:11px; }
#transcript-content { max-height:200px; overflow:auto; white-space:pre-wrap; overflow-wrap:anywhere; background:#fff; border:1px solid var(--line); padding:12px; border-radius:8px; font:12px/1.8 var(--font); }
#saved-email { white-space:pre-line; overflow-wrap:anywhere; font-size:12px; }
.records-button { max-width:390px; margin:23px auto 13px; }
.ticket-success { padding-top:25px; }
@media(max-width:1100px) {
  .header-right { gap:18px; }
  .home-link { display:none; }
  .account-card h2 { font-size:15px; }
  .intro-detail { margin-top:18px; }
  .conversation-tools { padding-left:23px; padding-right:23px; }
  .conversation-tools button>span { display:block; margin-left:0; }
}
@media(max-width:760px) {
  .site-header { padding:19px 20px; gap:16px; }
  .header-right { gap:16px; }
  .account-link { border:0; background:none; padding:0; gap:5px; font-size:12px; }
  .account-link>span[aria-hidden] { display:none; }
  .history-link { font-size:12px; }
  .account-link small,.history-link small { font-size:10px; }
  .brand img { width:118px; }
  .intro { gap:0; }
  .support { height:clamp(620px,calc(100vh - 130px),780px); height:clamp(620px,calc(100dvh - 130px),780px); }
  .conversation-tools { padding:3px 17px; min-height:48px; }
  .conversation-tools button { font-size:11px; }
  .conversation-tools button>span { font-size:10px; }
  .composer-wrap { padding-top:8px; padding-bottom:12px; margin-top:0; }
  .save-hint { font-size:10px; margin-top:7px; }
  .support-footer { padding-left:12px; padding-right:12px; padding-bottom:15px; }
  .support-footer span[lang] { display:block; margin:1px 0 0; font-size:10px; }
}
@media(max-width:380px) {
  .site-header { padding-left:16px; padding-right:16px; gap:8px; }
  .brand img { width:98px; }
  .header-right { gap:12px; }
  .account-link small { font-size:9px; }
  .conversation-tools { padding-left:12px; padding-right:12px; }
  .connection { gap:5px; }
  .connection b { font-size:11px; }
  .connection small { font-size:10px; }
}