:root{--bg: #faf7f4;--surface: #ffffff;--brand: #d4846a;--brand-deep: #c06e52;--brand-ghost: rgba(212, 132, 106, .1);--ink: #3c3230;--ink-soft: #6b5e5a;--ink-muted: #9b8e8a;--border: #ebe3dd;--bubble-ai: #ffffff;--bubble-user: #d4846a;--bubble-user-text: #ffffff;--shadow-sm: 0 1px 3px rgba(60, 50, 46, .06);--shadow-md: 0 2px 8px rgba(60, 50, 46, .1);--radius: 16px;--radius-sm: 10px;--safe-b: env(safe-area-inset-bottom, 0px)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}body{font-family:PingFang SC,Hiragino Sans GB,Noto Sans SC,Microsoft YaHei,-apple-system,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{height:100dvh;display:flex;flex-direction:column;overflow:hidden}.topbar{flex-shrink:0;padding:12px 20px;background:#ffffffe6;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:.5px solid var(--border);display:flex;align-items:center;gap:12px;z-index:10}.topbar-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#e8b4a2,var(--brand));display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.topbar-info{flex:1}.topbar-name{font-size:16px;font-weight:600}.topbar-status{font-size:12px;color:var(--ink-muted);display:flex;align-items:center;gap:6px}.topbar-dot{width:6px;height:6px;border-radius:50%;background:#7bc67e}.chat{flex:1;overflow-y:auto;padding:20px 16px;display:flex;flex-direction:column;gap:12px;-webkit-overflow-scrolling:touch}.chat::-webkit-scrollbar{width:3px}.chat::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center;animation:fadeIn .6s ease}.welcome.hidden{display:none}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.msg-row{display:flex;gap:10px;max-width:85%;animation:slideUp .3s ease}.msg-row.user{align-self:flex-end;flex-direction:row-reverse}.msg-row.ai{align-self:flex-start}.msg-avatar{width:34px;height:34px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:16px}.msg-avatar.ai{background:linear-gradient(135deg,#e8b4a2,var(--brand))}.msg-avatar.user{background:var(--brand-ghost);font-size:14px}.msg-bubble{padding:12px 16px;border-radius:var(--radius);line-height:1.6;font-size:15px;word-break:break-word;white-space:pre-wrap}.msg-row.ai .msg-bubble{background:var(--bubble-ai);border:1px solid var(--border);border-bottom-left-radius:4px;color:var(--ink)}.msg-row.user .msg-bubble{background:var(--bubble-user);border-bottom-right-radius:4px;color:var(--bubble-user-text)}.msg-bubble-wrapper{display:flex;flex-direction:column}.msg-image{display:block;max-width:200px;max-height:200px;border-radius:8px;margin-bottom:6px;cursor:zoom-in}.msg-zoom-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;z-index:100;display:flex;align-items:center;justify-content:center}.msg-zoom-img{max-width:92vw;max-height:88vh;border-radius:8px}.msg-zoom-close{position:fixed;top:20px;right:20px;width:36px;height:36px;border-radius:50%;border:none;background:#ffffffe6;font-size:16px;cursor:pointer;z-index:101}.msg-row.user .msg-bubble-wrapper{align-items:flex-end}.msg-row.ai .msg-bubble-wrapper{align-items:flex-start}.msg-time{font-size:11px;color:var(--ink-muted);opacity:.6;margin-top:4px;padding:0 4px}.msg-row.streaming .msg-bubble:after{content:"|";animation:blink .8s infinite;color:var(--ink-muted)}@keyframes blink{50%{opacity:0}}.card-container{align-self:flex-start;width:90%;max-width:90%;min-width:0;animation:slideUp .4s ease}.card-container-center{align-self:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}.card-header{padding:14px 16px 8px;font-size:13px;color:var(--ink-muted);font-weight:500;display:flex;align-items:center;gap:6px;overflow:hidden}.marquee{flex:1;min-width:0;overflow:hidden;white-space:nowrap}.marquee-track{display:inline-block;padding-left:100%;animation:marquee-scroll 9s linear infinite}.marquee-header:hover .marquee-track{animation-play-state:paused}@keyframes marquee-scroll{0%{transform:translate(0)}to{transform:translate(-100%)}}.card-container[data-card=steps] .marquee,.card-container[data-card=steps] .marquee-track{display:block;padding-left:0;white-space:normal;word-break:break-word;animation:none!important}.card-body{padding:0 16px 14px}.card-product{display:flex;flex-direction:column;gap:6px}.card-product-name{font-size:16px;font-weight:600;color:var(--ink)}.card-product-meta{display:flex;gap:12px;font-size:13px;color:var(--ink-soft)}.card-product-meta span{display:flex;align-items:center;gap:3px}.card-product-score{color:var(--brand-deep);font-weight:600}.card-product-points{font-size:13px;color:var(--ink-soft);line-height:1.5}.card-product-action{margin-top:10px;display:flex;gap:8px}.card-btn{flex:1;padding:10px;border:none;border-radius:var(--radius-sm);font-size:14px;cursor:pointer;transition:background .2s;min-height:44px}.card-btn-primary{background:var(--brand);color:#fff}.card-btn-primary:active{background:var(--brand-deep)}.card-btn-skip{background:var(--brand-ghost);color:var(--ink-soft)}.card-diagnostic{display:flex;flex-direction:column;gap:8px}.card-diagnostic-stats{display:flex;gap:12px;flex-wrap:wrap}.card-diagnostic-stat{text-align:center;flex:1;min-width:50px}.card-diagnostic-stat-value{font-size:20px;font-weight:700;color:var(--ink)}.card-diagnostic-stat-label{font-size:11px;color:var(--ink-muted);margin-top:2px}.card-diagnostic-diagnosis{font-size:14px;color:var(--brand-deep);font-weight:500;line-height:1.5}.card-diagnostic-action{font-size:13px;color:var(--ink-soft);line-height:1.5}.card-dismissed{cursor:pointer;padding:8px 16px;font-size:13px;color:var(--ink-muted);background:var(--brand-ghost);border-radius:var(--radius);text-align:center}.onboarding-progress{height:4px;background:var(--border);border-radius:2px;margin-bottom:12px;overflow:hidden}.onboarding-progress-bar{height:100%;background:var(--brand);border-radius:2px;transition:width .25s ease}.onboarding-question{font-size:15px;font-weight:600;margin-bottom:12px;color:var(--ink)}.onboarding-type-tag{display:inline-block;font-size:11px;font-weight:600;padding:1px 8px;border-radius:999px;margin-left:8px;vertical-align:2px}.onboarding-type-tag.tag-multi{background:var(--brand-ghost);color:var(--brand-deep)}.onboarding-type-tag.tag-single{background:#eef2f7;color:#5a7fb8}.onboarding-options{display:flex;flex-direction:column;gap:8px}.onboarding-option{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);font-size:14px;color:var(--ink);cursor:pointer;text-align:left;min-height:44px;font-family:inherit;transition:border-color .15s,background .15s,transform .12s}.onboarding-option-text{font-weight:400}.onboarding-option.selected .onboarding-option-text{font-weight:600}.onboarding-option-check{width:20px;height:20px;flex-shrink:0;border:1.5px solid var(--ink-muted);border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:13px;line-height:1;color:transparent;transition:all .15s}.onboarding-option-check.checked{background:var(--brand);border-color:var(--brand);color:#fff}.onboarding-input-area{display:flex;flex-direction:column;gap:8px}.onboarding-input{width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--ink);outline:none;resize:none;line-height:1.5}.onboarding-input:focus{border-color:var(--brand)}.onboarding-help-toggle{font-size:12px;color:var(--brand);cursor:pointer}.onboarding-help{font-size:12px;color:var(--ink-soft);background:var(--brand-ghost);border-radius:var(--radius-sm);padding:10px 12px;line-height:1.6}.onboarding-error{font-size:12px;color:#e05555}.onboarding-actions{display:flex;gap:8px}.onboarding-submitted{font-size:14px;color:var(--ink-soft);line-height:1.6}.ss-card{display:flex;flex-direction:column;gap:10px}.ss-tip{font-size:13px;color:var(--ink-muted)}.ss-help-toggle{font-size:12px;color:var(--brand);cursor:pointer}.ss-tabs{display:flex;gap:6px}.ss-tab{flex:1;padding:7px 0;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink-soft);font-size:13px;cursor:pointer}.ss-tab.active{background:var(--brand-ghost);border-color:var(--brand);color:var(--brand-deep);font-weight:600}.ss-slots{display:flex;gap:12px}.ss-slot{position:relative;flex:1;height:130px;min-width:0;border:1px dashed var(--border);border-radius:var(--radius-sm);background:#faf8f6;display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden;font-size:26px;color:var(--ink-muted)}.ss-slot.empty:hover{border-color:var(--brand);color:var(--brand-deep)}.ss-slot.filled{border-style:solid}.ss-slot img{width:100%;height:100%;object-fit:cover}.ss-remove{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;border:none;background:var(--danger);color:#fff;font-size:12px;line-height:1;cursor:pointer}.ss-count{font-size:12px;color:var(--ink-muted)}.link-card-link{font-size:14px;color:var(--brand-deep);word-break:break-all;background:var(--brand-ghost);border-radius:var(--radius-sm);padding:10px 12px;margin-bottom:8px}.link-card-note{font-size:12px;color:var(--ink-muted);line-height:1.5}.onboarding-option.selected{border-color:var(--brand);background:var(--brand-ghost)}.onboarding-nav{display:flex;gap:8px;margin-top:8px}.onboarding-nav .card-btn{flex:1}.onboarding-hook{align-self:center;font-size:14px;font-weight:600;color:var(--brand-deep);text-align:center;line-height:1.5;white-space:pre-wrap;padding:7px 16px;margin:2px 0 6px;background:#ffffffd9;border:1px solid var(--border);border-radius:999px;box-shadow:var(--shadow-sm);max-width:92%;animation:hookIn .45s ease both}@keyframes hookIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.onboarding-option:active{transform:scale(.985)}.welcome-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:linear-gradient(160deg,#6b4a3f,#3c2f2a);display:flex;align-items:center;justify-content:center;padding:32px;cursor:pointer;animation:overlayIn .5s ease both;transition:opacity .4s ease}.welcome-overlay.leaving{opacity:0;pointer-events:none}@keyframes overlayIn{0%{opacity:0}to{opacity:1}}.welcome-overlay-card{max-width:380px;text-align:center;color:#fff}.welcome-overlay-text{font-size:20px;line-height:1.7;font-weight:600;min-height:110px;white-space:pre-wrap;text-shadow:0 1px 8px rgba(0,0,0,.25)}.welcome-overlay-cursor{animation:blink .9s infinite;color:#ffffffb3;font-weight:400}.welcome-overlay-hint{margin-top:26px;font-size:12px;color:#ffffff73}@media (min-width: 768px){body{background:#ece7e2}.app{max-width:480px;margin:0 auto;box-shadow:0 0 24px #3c322e1f}.topbar{border-radius:0}}.input-area{flex-shrink:0;padding:10px 16px calc(10px + var(--safe-b));background:#fffffff2;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:.5px solid var(--border)}.suggestion-bar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.suggestion-chip{max-width:240px;min-height:32px;padding:5px 10px;border:.5px solid var(--border);border-radius:999px;background:var(--surface);color:var(--ink-soft);font-size:12px;line-height:1.4;text-align:left;cursor:pointer;transition:background .2s,border-color .2s}.suggestion-chip:active{background:var(--brand-ghost);border-color:var(--brand)}.suggestion-chip:disabled{opacity:.5;cursor:default}.image-preview{position:relative;display:inline-block;margin-bottom:6px}.image-preview img{width:64px;height:64px;object-fit:cover;border-radius:8px;border:1px solid var(--border)}.image-preview-remove{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;border:none;background:var(--danger);color:#fff;font-size:12px;line-height:1;cursor:pointer}.attach-btn{flex-shrink:0;width:44px;height:40px;border:1px solid var(--border);border-radius:8px;background:var(--surface);font-size:22px;line-height:1;cursor:pointer;color:var(--ink-soft)}.attach-btn:hover{color:var(--brand-deep);border-color:var(--brand)}.attach-menu{display:flex;justify-content:center;align-items:center;gap:40px;padding:14px 0 2px}.attach-menu-item{display:flex;flex-direction:column;align-items:center;gap:6px;background:none;border:none;font-size:12px;color:var(--ink-soft);cursor:pointer;flex:1;max-width:90px}.attach-menu-icon{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--brand-ghost);border-radius:12px;font-size:24px}.attach-menu-item:active .attach-menu-icon{background:#f0d9d0}.send-btn-primary{flex-shrink:0;height:40px;padding:0 18px;border:none;border-radius:8px;background:var(--brand);color:#fff;font-size:15px;font-weight:500;cursor:pointer}.send-btn-primary:disabled{opacity:.5;cursor:default}.input-row{display:flex;gap:10px;align-items:flex-end}.input-field{flex:1;border:1px solid var(--border);border-radius:22px;padding:10px 16px;font-size:15px;font-family:inherit;background:var(--bg);color:var(--ink);outline:none;resize:none;max-height:100px;line-height:1.4;transition:border-color .2s}.input-field:focus{border-color:var(--brand)}.input-field::placeholder{color:var(--ink-muted)}.send-btn{width:44px;height:44px;border-radius:50%;border:none;background:var(--brand);color:#fff;font-size:18px;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:background .2s,opacity .2s}.send-btn:disabled{opacity:.5;cursor:not-allowed}.send-btn:not(:disabled):active{background:var(--brand-deep)}.typing{display:flex;gap:4px;padding:12px 16px;align-items:center}.typing-dot{width:8px;height:8px;border-radius:50%;background:var(--ink-muted);animation:typingBounce 1.4s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.onboarding-anchor{display:flex;flex-direction:column;align-items:center;width:100%}.form-fab{position:fixed;right:10px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;align-items:center;gap:3px;padding:9px 7px;border:1px solid var(--border);border-radius:14px;background:var(--surface);box-shadow:var(--shadow-sm);color:var(--ink);cursor:pointer;animation:fab-pulse 2.4s ease-in-out infinite}.form-fab-icon{font-size:18px;line-height:1}.form-fab-label{font-size:11px;color:var(--ink-muted);white-space:nowrap;writing-mode:vertical-rl}@keyframes fab-pulse{0%,to{box-shadow:0 0 #ff638459}50%{box-shadow:0 0 0 8px #ff638400}}.form-panel-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;background:#00000059;display:flex;align-items:center;justify-content:center;padding:16px}.form-panel-card{max-width:100%;max-height:90vh;overflow-y:auto}.onboarding-close{flex-shrink:0;width:28px;height:28px;border:none;border-radius:50%;background:transparent;color:var(--ink-muted);font-size:14px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;margin-left:auto}.onboarding-close:active{background:var(--brand-ghost)}.form-panel-close{position:fixed;top:18px;right:18px;width:36px;height:36px;border:none;border-radius:50%;background:#ffffffeb;box-shadow:var(--shadow-sm);color:var(--ink-soft);font-size:16px;line-height:1;cursor:pointer;z-index:61;display:flex;align-items:center;justify-content:center}.form-panel-close:active{background:var(--brand-ghost)}.card-steps-pages{display:flex;align-items:flex-start;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}.card-steps-pages::-webkit-scrollbar{display:none}.card-steps-page{flex:0 0 100%;scroll-snap-align:start;display:flex;gap:10px;padding:6px 2px 10px}.card-steps-page-index{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--brand-ghost);color:var(--brand-deep);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center}.card-steps-page-text{flex:1;font-size:14px;line-height:1.6;color:var(--ink);white-space:pre-wrap}.card-steps-nav{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:4px;padding-top:10px;border-top:.5px solid var(--border)}.card-steps-btn{min-height:40px;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink-soft);font-size:13px;cursor:pointer;transition:background .2s}.card-steps-btn:disabled{opacity:.4;cursor:default}.card-steps-btn:not(:disabled):active{background:var(--brand-ghost)}.card-video-divider{margin:12px 0 8px;font-size:12px;color:var(--ink-muted);display:flex;align-items:center;gap:6px}.card-video-divider:after{content:"";flex:1;height:.5px;background:var(--border)}.card-video{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;background:var(--surface)}.card-video-cover{width:100%;aspect-ratio:16 / 9;background-size:cover;background-position:center;background-color:var(--brand-ghost)}.card-video-info{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px}.card-video-title{flex:1;font-size:13px;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-video-play{flex-shrink:0;min-height:40px;padding:8px 14px;border:none;border-radius:999px;background:var(--brand);color:#fff;font-size:13px;cursor:pointer}.card-video-play:active{background:var(--brand-deep)}.video-player-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:80;background:#000c;display:flex;align-items:center;justify-content:center;padding:16px}.video-player{width:100%;max-width:480px;background:#000;border-radius:var(--radius);overflow:hidden}.video-player-frame{width:100%;aspect-ratio:16 / 9;border:none;display:block}.video-player-fallback{width:100%;aspect-ratio:16 / 9;display:flex;align-items:center;justify-content:center;color:#fff9;font-size:14px}.video-player-actions{display:flex;gap:8px;padding:10px 12px;align-items:center;justify-content:flex-end}.video-player-open{font-size:13px;color:#ffffffd9;text-decoration:none}.video-player-close{min-height:40px;padding:8px 16px;border:1px solid rgba(255,255,255,.35);border-radius:var(--radius-sm);background:transparent;color:#fff;font-size:13px;cursor:pointer}.marquee-static{padding-left:0!important;animation:none!important}.marquee-track-delay{padding-left:0!important;animation:marquee-delayed 16s linear 1.5s infinite}@keyframes marquee-delayed{0%{transform:translate(0)}to{transform:translate(-100%)}}.card-steps-page-indicator{display:flex;justify-content:flex-end;padding:4px 4px 0;font-size:11px;color:var(--ink-muted)}.card-steps-full{display:flex;flex-direction:column;gap:12px;max-height:280px;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:4px 2px 6px}.card-steps-full-item{display:flex;gap:10px}.card-steps-full-index{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--brand-ghost);color:var(--brand-deep);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center}.card-steps-full-text{flex:1;font-size:14px;line-height:1.6;color:var(--ink);white-space:pre-wrap}.card-steps-viewall{color:var(--brand-deep);border-color:#d4846a66;background:var(--brand-ghost);font-weight:500}.card-container-expanded{position:fixed;top:0;right:0;bottom:0;left:0;z-index:70;width:100%;max-width:100%;margin:0;animation:none}.card-container-expanded .card{height:100dvh;display:flex;flex-direction:column;overflow:hidden;border:none;border-radius:0}.card-container-expanded .card-header{flex-shrink:0;padding-top:calc(14px + env(safe-area-inset-top,0px))}.card-container-expanded .card-body,.card-container-expanded .card-steps-body{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.card-container-expanded .card-steps-full{flex:1;min-height:0;max-height:none;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:12px}.card-container-expanded .card-steps-nav{flex-shrink:0}.card-steps-full::-webkit-scrollbar,.card-steps-body::-webkit-scrollbar{width:6px;display:block}.card-steps-full::-webkit-scrollbar-thumb,.card-steps-body::-webkit-scrollbar-thumb{background:#0000002e;border-radius:3px}.card-steps-full{scrollbar-width:thin;scrollbar-color:rgba(0,0,0,.18) transparent}