/* 独立客服入口使用ID定位，避免提示框的relative样式覆盖fixed。 */
#support-launch{position:fixed;inset:auto 24px 24px auto;z-index:1100;display:inline-flex;align-items:center;gap:11px;min-width:150px;height:62px;box-sizing:border-box;margin:0;padding:9px 18px 9px 10px;border:1px solid #ffffff66;border-radius:32px;background:linear-gradient(125deg,#245be8,#4057e9);color:#fff;box-shadow:0 8px 28px #173a7c38,0 0 0 4px #ffffffa6;font:600 15px/1.4 "Microsoft YaHei",sans-serif;cursor:pointer;touch-action:manipulation;transition:box-shadow .18s,background .18s}
#support-launch:hover{background:#214fda;box-shadow:0 10px 30px #173a7c48,0 0 0 4px #ffffffba}
#support-launch:focus-visible,#support-panel button:focus-visible,#support-panel textarea:focus-visible{outline:3px solid #7ba8ff;outline-offset:4px}
.support-launch-mark{display:grid;place-items:center;width:40px;height:40px;flex:0 0 40px;border-radius:50%;background:#ffffff20}
.support-launch-mark svg{width:25px;height:25px;animation:support-greet 2.2s ease-in-out 3;transform-origin:50% 70%}
.support-launch-label{display:flex;flex-direction:column;align-items:flex-start;gap:1px;white-space:nowrap}
.support-launch-label strong{font:inherit;letter-spacing:.5px}.support-launch-label>span{font:400 11px/1.4 sans-serif;color:#e3ebff}
#support-launch[hidden]{display:none}#support-launch[aria-expanded="true"] .support-launch-mark svg{animation:none}
@keyframes support-greet{0%,55%,100%{transform:rotate(0)}65%{transform:rotate(-9deg)}78%{transform:rotate(8deg)}90%{transform:rotate(-4deg)}}
#support-panel{position:fixed;inset:auto 24px calc(24px + var(--support-keyboard-offset,0px)) auto;z-index:1101;width:min(390px,calc(100% - 48px));height:min(620px,calc(100vh - 48px));height:min(620px,calc(var(--support-visible-height,100dvh) - 48px));min-height:0;box-sizing:border-box;border:1px solid #dce4f3;border-radius:18px;background:#fff;box-shadow:0 14px 48px #18304a30;color:#17304b;font:14px/1.6 "Microsoft YaHei",sans-serif;display:flex;flex-direction:column;overflow:visible}
#support-panel[hidden]{display:none}.support-head{display:flex;align-items:center;justify-content:space-between;flex-shrink:0;padding:12px 16px;border-bottom:1px solid #e8edf6;border-radius:18px 18px 0 0;background:#fff}.support-head strong{font-size:17px}.support-icon{display:grid;place-items:center;width:40px;height:40px;padding:0;background:transparent;border:0;border-radius:8px;color:#536883;font-size:24px;cursor:pointer}.support-icon:hover{background:#f1f5fc}.support-log{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:16px;background:#f6f8fc}.support-message{margin:0 32px 12px 0;padding:10px 12px;border-radius:10px;background:#fff;overflow-wrap:anywhere;white-space:pre-wrap}.support-message.self{margin:0 0 12px 32px;background:#e6eeff}.support-message small{display:block;color:#718298;font-size:11px;margin-bottom:4px}.support-message a{color:#245be8}.support-message img{display:block;width:160px;max-width:100%;height:auto;margin:10px 0}.support-note{flex-shrink:0;padding:8px 16px;color:#536883;font-size:12px;min-height:20px;line-height:1.6}.support-compose{flex-shrink:0;border-top:1px solid #e8edf6;padding:12px;display:flex;align-items:flex-end;gap:8px}.support-compose textarea{flex:1;min-width:0;resize:none;height:65px;box-sizing:border-box;border:1px solid #d5dfef;border-radius:8px;padding:8px;font:14px/1.5 sans-serif}.support-action{border:0;border-radius:8px;min-height:44px;padding:10px 12px;background:#245be8;color:#fff;cursor:pointer;white-space:nowrap}.support-action:disabled{opacity:.5;cursor:default}.support-tip{position:relative;display:inline-flex}.support-tip::before{content:attr(data-tip);display:none;position:absolute;bottom:calc(100% + 8px);right:0;background:#17304b;color:#fff;border-radius:5px;padding:5px 8px;white-space:nowrap;font:12px/1.5 sans-serif;pointer-events:none;z-index:1200}.support-tip:hover::before,.support-tip:focus-within::before{display:block}
@media(max-width:600px){#support-launch{right:12px;bottom:max(16px,env(safe-area-inset-bottom));min-width:132px;height:56px;padding:7px 14px 7px 8px;gap:9px}.support-launch-mark{width:36px;height:36px;flex-basis:36px}#support-launch[aria-expanded="true"]{display:none}#support-panel{right:12px;bottom:calc(12px + env(safe-area-inset-bottom) + var(--support-keyboard-offset,0px));width:calc(100% - 24px);height:min(680px,calc(100vh - 24px));height:min(680px,calc(var(--support-visible-height,100dvh) - 24px - env(safe-area-inset-bottom)));border-radius:16px}.support-head{border-radius:16px 16px 0 0}.support-compose textarea{font-size:16px}.support-message{margin-right:20px}.support-message.self{margin-left:20px}.support-compose{padding:10px;gap:6px}.support-note{padding:6px 12px}}
@media(prefers-reduced-motion:reduce){.support-launch-mark svg{animation:none}#support-launch{transition:none}}
.support-welcome{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100%;padding:24px 6px;box-sizing:border-box;text-align:center}.support-welcome-mark{display:grid;place-items:center;width:58px;height:58px;margin-bottom:18px;border-radius:18px;background:#e7edff;color:#315de6;font-size:30px}.support-welcome strong{font-size:17px;color:#17304b}.support-welcome p{max-width:285px;margin:10px 0 20px;color:#63758d;line-height:1.8}.support-welcome>small{margin-top:20px;color:#7b8ba0;font-size:12px}.support-suggestions{display:flex;flex-wrap:wrap;justify-content:center;gap:9px}.support-suggestion{padding:8px 12px;min-height:40px;border:1px solid #dce4f3;border-radius:20px;background:#fff;color:#2956d5;font:13px/1.5 sans-serif;cursor:pointer}.support-suggestion:hover{border-color:#91aaf2;background:#eef3ff}
.support-head-actions{display:flex;align-items:center;gap:4px}.support-text-button{min-height:36px;padding:5px 7px;border:0;border-radius:6px;background:transparent;color:#315de6;font:13px/1.5 sans-serif;cursor:pointer}.support-text-button:hover{background:#edf2ff}.support-text-button:disabled{color:#8797ab;cursor:default}.support-message a{display:inline;overflow-wrap:anywhere;text-decoration:underline;text-underline-offset:3px}.support-message a.support-tip::before{white-space:normal;min-width:105px;max-width:150px}
.support-unread{position:absolute;top:-4px;right:0;min-width:24px;min-height:24px;padding:2px 5px;border:2px solid #fff;border-radius:20px;background:#e24453;color:#fff;text-align:center;font:600 12px/20px sans-serif;box-sizing:border-box}.support-unread[hidden],.support-rating[hidden],.support-new-replies[hidden]{display:none}.support-remind{animation:support-nudge .65s ease-in-out}@keyframes support-nudge{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px) rotate(-2deg)}50%{transform:translateX(4px) rotate(2deg)}75%{transform:translateX(-2px)}}
.support-new-replies{flex-shrink:0;border:0;border-bottom:1px solid #dce4f3;padding:7px;background:#edf3ff;color:#245be8;font:13px/1.5 sans-serif;cursor:pointer}
/* 评价使用独立视图，避免同时显示留言和问题两个输入框。 */
#support-panel.support-evaluating .support-log,#support-panel.support-evaluating .support-note,#support-panel.support-evaluating .support-compose,#support-panel.support-evaluating .support-new-replies,#support-panel.support-evaluating #support-rate-open,#support-panel.support-evaluating #support-end{display:none}
.support-rating{flex:1;min-height:0;display:flex;flex-direction:column;justify-content:center;gap:20px;padding:28px 24px;border-radius:0 0 18px 18px;background:linear-gradient(180deg,#f6f8ff,#fff 55%);box-sizing:border-box}
.support-rating-intro{text-align:center}.support-rating-mark{display:grid;place-items:center;width:48px;height:48px;margin:0 auto 12px;border-radius:16px;background:#eaf0ff;color:#315de6;font:30px/1 sans-serif}.support-rating-intro strong{display:block;font-size:17px}.support-rating-intro p{margin:5px 0 0;color:#718298;font-size:13px}
.support-stars{display:flex;justify-content:center;gap:10px}.support-star{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;padding:0;border:0;border-radius:10px;background:#edf1f7;color:#a5b2c5;font:32px/1 sans-serif;cursor:pointer;touch-action:manipulation}.support-star.selected{background:#fff2d8;color:#d99116}.support-star:hover{background:#ffe7b4;color:#ca8310}.support-star.support-tip::before{right:50%;transform:translateX(50%)}
.support-rating-value{min-height:22px;margin-top:8px;text-align:center;color:#718298;font-size:13px}.support-rating-value.selected{color:#ad7112;font-weight:600}
.support-rating-field label{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:13px;font-weight:600}.support-rating-field label span{font-size:12px;font-weight:400;color:#8795a9}.support-rating textarea{display:block;width:100%;height:96px;min-height:48px;box-sizing:border-box;resize:none;padding:10px 12px;border:1px solid #d5dfef;border-radius:10px;background:#fff;color:#17304b;font:14px/1.6 sans-serif;transition:border-color .15s,box-shadow .15s}.support-rating textarea::placeholder{color:#8795a9}.support-rating-field small{display:block;margin-top:5px;text-align:right;color:#8795a9;font:12px/1.5 sans-serif}
#support-panel textarea:focus-visible{outline:0;border-color:#6587f2;box-shadow:0 0 0 3px #e8eeff}
.support-rating-actions{display:flex;align-items:center;gap:10px}.support-rating-actions>button{flex:1;min-width:0;min-height:44px;justify-content:center;font:14px/1.5 sans-serif}.support-rating-back{border:1px solid #dce4f3;border-radius:8px;background:#fff;color:#536883;cursor:pointer}.support-rating-back:hover{background:#f3f6fc}.support-rating-hint{text-align:center;color:#8795a9;font-size:12px;line-height:1.6}.support-rating-error{color:#ba3341;font-size:13px}.support-rating-error[hidden]{display:none}
@media(max-width:600px){.support-head{padding:8px 10px}.support-head strong{font-size:16px}.support-head-actions{gap:0}.support-text-button{font-size:12px;padding:5px}.support-rating{padding:24px 18px;border-radius:0 0 16px 16px}.support-rating textarea{font-size:16px}.support-compose textarea{height:58px}}
@media(max-height:600px){.support-head{padding-top:5px;padding-bottom:5px}.support-note{padding-top:3px;padding-bottom:3px}.support-compose{padding-top:6px;padding-bottom:6px}.support-compose textarea{height:44px}}
/* visualViewport 会随软键盘缩小；紧凑状态保留评分、留言和提交。 */
#support-panel.support-short .support-rating{justify-content:flex-start;gap:8px;padding:10px 16px}
#support-panel.support-short .support-rating-mark,#support-panel.support-short .support-rating-intro p{display:none}
#support-panel.support-short .support-rating-intro strong{font-size:15px}
#support-panel.support-short .support-rating-value{margin-top:2px}
#support-panel.support-short .support-rating-field label{margin-bottom:4px}
#support-panel.support-short .support-rating textarea{height:52px;padding:6px 10px}
#support-panel.support-short .support-rating-field small{margin-top:1px}
#support-panel.support-short .support-rating-hint{font-size:11px}
#support-panel.support-tiny .support-rating{gap:8px;padding:8px 16px}
#support-panel.support-tiny .support-rating-intro,#support-panel.support-tiny .support-rating-hint,#support-panel.support-tiny .support-rating-field label,#support-panel.support-tiny .support-rating-field small{display:none}
.support-star:disabled,.support-rating-back:disabled{cursor:default;opacity:.6}
@media(hover:none){#support-panel .support-tip:hover::before,#support-panel .support-tip:focus-within::before{display:none}}
@media(prefers-reduced-motion:reduce){.support-remind{animation:none}}
.support-link-tip{position:fixed;z-index:1300;pointer-events:none;background:#17304b;color:#fff;border-radius:5px;padding:5px 8px;font:12px/1.5 sans-serif}.support-link-tip[hidden]{display:none}
/* 受限Markdown：原文安全建DOM，表格仅在自己的区域滑动。 */
.support-rich{white-space:normal;min-width:0}.support-rich p{margin:0 0 8px;white-space:pre-wrap}.support-rich p:last-child{margin-bottom:0}.support-rich h4{margin:12px 0 6px;font-size:14px;color:#17304b}.support-rich h4:first-child{margin-top:0}.support-rich ul,.support-rich ol{margin:6px 0 10px;padding-left:23px}.support-rich li{padding-left:2px;margin:6px 0;white-space:pre-wrap}.support-rich li::marker{color:#315de6;font-weight:600}.support-rich strong{font-weight:600;color:#17304b}.support-rich pre{margin:8px 0;padding:10px;border-radius:8px;background:#f2f5fa;font:12px/1.7 monospace;white-space:pre-wrap;overflow-wrap:anywhere}
.support-table-wrap{max-width:100%;margin:10px 0;overflow-x:auto;border:1px solid #dce4f3;border-radius:8px;overscroll-behavior-x:contain}.support-table-wrap table{width:100%;border-collapse:collapse;table-layout:auto;min-width:240px;font-size:12px;line-height:1.6}.support-table-wrap th,.support-table-wrap td{padding:8px;text-align:left;vertical-align:top;min-width:66px;max-width:180px;border-bottom:1px solid #e8edf6;overflow-wrap:anywhere}.support-table-wrap th{background:#eef3ff;font-weight:600;color:#294f9c}.support-table-wrap tbody tr:last-child td{border-bottom:0}.support-table-wrap tbody tr:nth-child(even){background:#f8faff}.support-table-wrap:focus-visible{outline:2px solid #7ba8ff;outline-offset:2px}
.support-waiting{display:flex;align-items:flex-start;gap:10px;margin:4px 4px 12px;padding:13px 12px;border:1px solid #dce6fb;border-radius:12px;background:#eef4ff;white-space:normal;overflow-wrap:anywhere}.support-waiting-mark{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:10px;background:#dce8ff;color:#315de6;font:24px/1 sans-serif}.support-waiting strong{display:block;color:#294f9c;font-size:13px}.support-waiting p{margin:4px 0;color:#536883;font-size:12px;line-height:1.7}.support-waiting small{display:block;font-size:11px;color:#718298;line-height:1.7}.support-waiting a{color:#245be8;font-size:12px;text-underline-offset:3px}.support-waiting[data-stage="long"]{background:#fff8ed;border-color:#f2e4ca}.support-waiting[data-stage="long"] .support-waiting-mark{background:#ffefcf;color:#9b6d25}
@media(max-width:600px){.support-table-wrap table{min-width:220px}.support-table-wrap th,.support-table-wrap td{padding:7px;min-width:60px}.support-waiting{margin-right:0;margin-left:0;padding:11px 10px}}