[data-duowenwen]{--bg:#f5f7fb;--ink:#0b1020;--muted:#4a5367;--faint:#6b7385;--accent:#2f4fe0;--accent-fill:#3352e8;--dw-logo-accent:#3352e8;--accent-fill-press:#2a45cc;--accent-soft:#4d6bfe1f;--blob-a:#4d6bfe38;--blob-b:#63c7ff38;--blob-c:#a78bfa24;--glass:#ffffff9e;--glass-strong:#ffffffc7;--glass-solid:#fbfcfe;--glass-blur:24px;--glass-sat:180%;--edge-hi:#fffffff2;--edge-lo:#ffffff40;--edge-line:#0b102012;--sheen:#fffc;--r-chip:999px;--r-control:14px;--r-card:28px;--r-panel:36px;--paper:var(--bg);--surface:var(--glass-solid);--wash:#eaeef7;--line:#0b10201a;--brand:var(--accent-fill);--brand-press:var(--accent-fill-press);--brand-soft:var(--accent-soft);--on-brand:#fff;--seal-soft:#eaeef7;--seal-press:#2a45cc;--seal:#2f4fe0;--ok:#4a5367;--warn:#4a5367;--danger:#0b1020;color:var(--ink);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;isolation:isolate;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,SF Pro Text,Helvetica Neue,Noto Sans SC,Microsoft YaHei,sans-serif;font-size:17px;line-height:1.8}[data-duowenwen][data-theme=night]{--dw-logo-accent:#9aacff;--bg:#07090f;--ink:#f1f3f9;--muted:#aeb5c7;--faint:#8a92a6;--accent:#9aacff;--accent-fill:#3352e8;--accent-fill-press:#2a45cc;--accent-soft:#7891ff29;--blob-a:#4d6bfe4d;--blob-b:#63c7ff29;--blob-c:#a78bfa29;--glass:#1c213294;--glass-strong:#1c2132c2;--glass-solid:#151a28;--edge-hi:#ffffff38;--edge-lo:#ffffff0a;--edge-line:#ffffff0f;--sheen:#ffffff1f;--wash:#1a2030;--line:#ffffff1a;--seal-soft:#1a2030;--seal:#9aacff;--ok:#aeb5c7;--warn:#aeb5c7;--danger:#f1f3f9;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@media (prefers-color-scheme:dark){[data-duowenwen]:not([data-theme]){--dw-logo-accent:#9aacff;--bg:#07090f;--ink:#f1f3f9;--muted:#aeb5c7;--faint:#8a92a6;--accent:#9aacff;--accent-soft:#7891ff29;--blob-a:#4d6bfe4d;--blob-b:#63c7ff29;--blob-c:#a78bfa29;--glass:#1c213294;--glass-strong:#1c2132c2;--glass-solid:#151a28;--edge-hi:#ffffff38;--edge-lo:#ffffff0a;--edge-line:#ffffff0f;--sheen:#ffffff1f;--wash:#1a2030;--line:#ffffff1a;--seal-soft:#1a2030;--seal:#9aacff;--ok:#aeb5c7;--warn:#aeb5c7;--danger:#f1f3f9;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}[data-duowenwen] .dw-ambient{z-index:-1;pointer-events:none;background:radial-gradient(42vmax 42vmax at 86% -6%, var(--blob-a), transparent 70%), radial-gradient(38vmax 38vmax at -8% 34%, var(--blob-b), transparent 70%), radial-gradient(34vmax 34vmax at 70% 78%, var(--blob-c), transparent 70%), var(--bg);position:fixed;inset:0}[data-duowenwen] .dw-glass{background:linear-gradient(var(--glass), var(--glass)) padding-box, linear-gradient(150deg, var(--edge-hi), var(--edge-lo) 38%, var(--edge-lo) 62%, var(--edge-hi)) border-box;box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 1px var(--edge-line);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));border:1px solid #0000}[data-duowenwen] .dw-glass-strong{--glass:var(--glass-strong)}@supports not ((-webkit-backdrop-filter:blur(1px)) or (backdrop-filter:blur(1px))){[data-duowenwen] .dw-glass{--glass:var(--glass-solid)}}@media (prefers-reduced-transparency:reduce){[data-duowenwen] .dw-glass{--glass:var(--glass-solid);-webkit-backdrop-filter:none;backdrop-filter:none}}[data-duowenwen] :focus-visible{outline:2px solid var(--accent);outline-offset:3px}[data-duowenwen] .dw-btn{border-radius:var(--r-chip);white-space:nowrap;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:0 20px;font-size:15px;font-weight:600;line-height:1;text-decoration:none;transition:background-color .2s,filter .2s,transform .2s;display:inline-flex}[data-duowenwen] .dw-btn-primary{color:#fff;background:linear-gradient(180deg, #ffffff1f, #fff0 55%), var(--accent-fill);box-shadow:inset 0 1px #ffffff59,inset 0 -1px #0000001f}[data-duowenwen] .dw-btn-primary:hover{background-color:var(--accent-fill-press);background:linear-gradient(180deg, #ffffff14, #fff0 55%), var(--accent-fill-press)}[data-duowenwen] .dw-btn-primary:focus-visible{outline-color:var(--accent);outline-offset:3px}[data-duowenwen] .dw-btn-glass{color:var(--ink)}[data-duowenwen] .dw-btn-glass:hover{--glass:var(--glass-strong)}[data-duowenwen] .dw-btn-lg{min-height:54px;padding:0 30px;font-size:17px}[data-duowenwen] .dw-btn:active{transform:scale(.98)}[data-duowenwen] .dw-nav{z-index:40;padding:0 24px;position:sticky;top:12px}[data-duowenwen] .dw-nav-bar{border-radius:var(--r-chip);align-items:center;gap:8px 28px;max-width:1120px;min-height:60px;margin:12px auto 0;padding:8px 8px 8px 20px;display:flex}[data-duowenwen] .dw-brand{color:var(--ink);white-space:nowrap;align-items:center;gap:10px;text-decoration:none;display:flex}[data-duowenwen] .dw-brand-name{letter-spacing:.02em;font-size:18px;font-weight:700}[data-duowenwen] .dw-brand-tag{color:var(--muted);font-size:13px}[data-duowenwen] .dw-main-nav{flex:1;align-items:center;gap:4px;font-size:15px;display:flex}[data-duowenwen] .dw-main-nav a{border-radius:var(--r-chip);min-height:40px;color:var(--muted);white-space:nowrap;align-items:center;padding:0 12px;text-decoration:none;transition:color .2s,background-color .2s;display:inline-flex}[data-duowenwen] .dw-main-nav a:hover{color:var(--ink);background:var(--accent-soft)}[data-duowenwen] .dw-toggle{gap:6px;min-height:44px;padding:0 14px;font-size:14px;font-weight:500}[data-duowenwen] .dw-toggle svg{width:16px;height:16px}[data-duowenwen] .dw-home{width:100%;max-width:1168px;margin:0 auto;padding:0 24px 96px}[data-duowenwen] .dw-hero{text-align:center;padding:clamp(40px,7vh,88px) 0 0}[data-duowenwen] .dw-chip{border-radius:var(--r-chip);min-height:34px;color:var(--muted);letter-spacing:.04em;align-items:center;gap:8px;padding:0 14px;font-size:13px;display:inline-flex}[data-duowenwen] .dw-chip-dot{background:var(--accent-fill);border-radius:50%;width:6px;height:6px}[data-duowenwen] .dw-hero h1{letter-spacing:-.02em;color:var(--ink);margin:28px auto 0;font-size:clamp(44px,7.2vw,88px);font-weight:650;line-height:1.06}[data-duowenwen] .dw-hero-sub{max-width:34em;color:var(--muted);margin:24px auto 0;font-size:clamp(17px,1.6vw,21px);line-height:1.7}[data-duowenwen] .dw-hero-cta{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:40px;display:flex}[data-duowenwen] .dw-hero-note{color:var(--muted);margin-top:16px;font-size:13px}[data-duowenwen] .dw-drop{border-radius:var(--r-panel);text-align:center;max-width:640px;margin:36px auto 0;padding:12px}[data-duowenwen] .dw-drop-zone{border:1.5px dashed color-mix(in srgb, var(--accent) 45%, transparent);background:color-mix(in srgb, var(--accent-soft) 45%, transparent);color:var(--ink);cursor:pointer;border-radius:24px;flex-direction:column;align-items:center;gap:6px;padding:28px 24px 26px;text-decoration:none;transition:background-color .2s,border-color .2s;display:flex}[data-duowenwen] .dw-drop-zone:hover,[data-duowenwen] .dw-drop[data-dragging] .dw-drop-zone{border-color:var(--accent);background:var(--accent-soft)}[data-duowenwen] .dw-drop-zone:focus-visible{outline-offset:4px}[data-duowenwen] .dw-drop-zone[aria-disabled]{cursor:progress}[data-duowenwen] .dw-drop-icon{width:52px;height:52px;color:var(--accent);background:var(--glass-strong);box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 1px var(--edge-line);border-radius:50%;place-items:center;display:inline-grid}[data-duowenwen] .dw-drop-icon svg{width:26px;height:26px}[data-duowenwen] .dw-drop-title{color:var(--ink);margin-top:8px;font-size:clamp(19px,1.8vw,22px);font-weight:650;line-height:1.4}[data-duowenwen] .dw-drop-hint{color:var(--muted);font-size:15px;line-height:1.6}[data-duowenwen] .dw-drop-btn{margin-top:12px}[data-duowenwen] .dw-drop-zone:hover .dw-drop-btn{background:linear-gradient(180deg, #ffffff14, #fff0 55%), var(--accent-fill-press)}[data-duowenwen] .dw-drop-zone:active .dw-drop-btn{transform:scale(.98)}[data-duowenwen] .dw-drop-print{max-width:34em;color:var(--muted);margin:10px auto 0;font-size:13px;line-height:1.6}[data-duowenwen] .dw-drop-print+.dw-drop-print{margin-top:2px}[data-duowenwen] .dw-drop-status{min-height:1.6em;color:var(--ink);margin-top:4px;font-size:13px;line-height:1.6}[data-duowenwen] .dw-when-touch{display:none}@media (pointer:coarse){[data-duowenwen] .dw-when-touch{display:inline}[data-duowenwen] .dw-when-fine{display:none}}[data-duowenwen] .dw-hero-more{margin-top:16px}[data-duowenwen] .dw-hero-more .dw-btn{font-weight:500}[data-duowenwen] .dw-band .dw-hero-note{color:var(--muted);margin-top:14px;font-size:13px;font-weight:400}[data-duowenwen] .dw-panel{border-radius:var(--r-panel);max-width:1040px;margin:72px auto 0;padding:14px}[data-duowenwen] .dw-panel-grid{grid-template-columns:.9fr 1.25fr 1fr;gap:14px;display:grid}[data-duowenwen] .dw-pane{text-align:left;border-radius:24px;min-height:260px;padding:20px}[data-duowenwen] .dw-pane-label{color:var(--ink);align-items:center;gap:8px;font-size:13px;font-weight:600;display:flex}[data-duowenwen] .dw-pane-label b{color:#fff;background:var(--accent-fill);border-radius:50%;place-items:center;width:22px;height:22px;font-size:12px;display:inline-grid}[data-duowenwen] .dw-pane svg{width:100%;height:auto;margin-top:16px;display:block}[data-duowenwen] .dw-lines{flex-direction:column;gap:10px;margin-top:18px;display:flex}[data-duowenwen] .dw-lines i{background:var(--line);border-radius:6px;height:9px;display:block}[data-duowenwen] .dw-lines i.dw-hl{background:linear-gradient(90deg, var(--accent-fill) 0 9px, var(--accent-soft) 9px)}[data-duowenwen] .dw-asks{flex-direction:column;gap:10px;margin-top:16px;display:flex;position:relative}[data-duowenwen] .dw-ask{color:var(--ink);border-radius:16px;padding:10px 14px;font-size:14px;line-height:1.45;display:block;position:relative}[data-duowenwen] .dw-ask:nth-child(2){margin-left:18px}[data-duowenwen] .dw-ask:nth-child(3){margin-left:36px}[data-duowenwen] .dw-ask:before{content:"";background:var(--accent-fill);border-radius:50%;width:6px;height:6px;position:absolute;top:50%;left:-12px;transform:translateY(-50%)}[data-duowenwen] .dw-lead{text-align:center;max-width:820px;margin:120px auto 0}[data-duowenwen] .dw-lead p{color:var(--ink);letter-spacing:.005em;font-size:clamp(20px,2.1vw,26px);line-height:1.7}[data-duowenwen] .dw-lead .dw-byline{color:var(--muted);margin-top:20px;font-size:13px}[data-duowenwen] .dw-section-head{text-align:center;margin:112px auto 32px}[data-duowenwen] .dw-section-head h2{letter-spacing:-.01em;font-size:clamp(28px,3.2vw,40px);font-weight:650;line-height:1.2}[data-duowenwen] .dw-bento{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}[data-duowenwen] .dw-bento>:last-child:nth-child(odd){grid-column:1/-1}[data-duowenwen] .dw-steps{grid-template-columns:repeat(3,minmax(0,1fr))}[data-duowenwen] .dw-steps>:last-child:nth-child(odd){grid-column:auto}[data-duowenwen] .dw-card{border-radius:var(--r-card);min-width:0;padding:36px 36px 32px;position:relative}[data-duowenwen] .dw-card-num{border-radius:var(--r-chip);min-width:40px;height:28px;color:var(--accent);background:var(--accent-soft);place-items:center;padding:0 10px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:13px;font-weight:600;display:inline-grid}[data-duowenwen] .dw-card h2,[data-duowenwen] .dw-card h3{color:var(--ink);margin-top:18px;font-size:22px;font-weight:650;line-height:1.35}[data-duowenwen] .dw-card p,[data-duowenwen] .dw-card dd,[data-duowenwen] .dw-card li{color:var(--muted);margin-top:12px;font-size:16px;line-height:1.85}[data-duowenwen] .dw-card blockquote{border-left:3px solid var(--accent-fill);color:var(--ink);margin-top:16px;padding-left:14px}[data-duowenwen] .dw-card a{color:var(--accent);text-underline-offset:3px}[data-duowenwen] .dw-card strong{color:var(--ink)}[data-duowenwen] .dw-promises{grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 32px;display:grid}[data-duowenwen] .dw-promises dt{color:var(--ink);margin-top:18px;font-weight:600}[data-duowenwen] .dw-promises dd{margin-top:4px}[data-duowenwen] .dw-faq{border-radius:var(--r-card);max-width:820px;margin:0 auto;padding:8px 32px}[data-duowenwen] .dw-faq details{border-top:1px solid var(--line)}[data-duowenwen] .dw-faq details:first-child{border-top:0}[data-duowenwen] .dw-faq summary{min-height:64px;color:var(--ink);cursor:pointer;justify-content:space-between;align-items:center;gap:16px;font-size:18px;font-weight:600;list-style:none;display:flex}[data-duowenwen] .dw-faq summary::-webkit-details-marker{display:none}[data-duowenwen] .dw-faq summary:focus-visible{outline-offset:-2px;border-radius:12px}[data-duowenwen] .dw-faq summary svg{width:22px;height:22px;color:var(--accent);flex:none;transition:transform .25s}[data-duowenwen] .dw-faq details[open] summary svg{transform:rotate(45deg)}[data-duowenwen] .dw-faq dd,[data-duowenwen] .dw-faq .dw-faq-a{color:var(--muted);padding:0 0 22px;font-size:16px;line-height:1.85}[data-duowenwen] .dw-links{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:48px;display:flex}[data-duowenwen] .dw-links .dw-btn{font-weight:500}[data-duowenwen] .dw-band{border-radius:var(--r-panel);text-align:center;max-width:1040px;margin:112px auto 0;padding:64px 32px}[data-duowenwen] .dw-band p{max-width:24em;color:var(--ink);margin:0 auto;font-size:clamp(22px,2.6vw,32px);font-weight:600;line-height:1.45}[data-duowenwen] .dw-band .dw-btn{margin-top:32px}[data-duowenwen] .dw-footer{border-top:1px solid var(--line)}[data-duowenwen] .dw-footer a{color:var(--muted);text-decoration:none}[data-duowenwen] .dw-footer a:hover{color:var(--ink)}[data-duowenwen] .dw-try-card{border-radius:var(--r-card);padding:28px}@media (max-width:767px){[data-duowenwen] .dw-nav{padding:0 12px;top:8px}[data-duowenwen] .dw-nav-bar{border-radius:26px;flex-wrap:wrap;gap:2px 8px;margin-top:8px;padding:8px 8px 6px 16px}[data-duowenwen] .dw-brand{flex:1}[data-duowenwen] .dw-brand-tag{display:none}[data-duowenwen] .dw-main-nav{scrollbar-width:none;flex-basis:100%;order:3;margin:0 -8px 0 -12px;font-size:14px;overflow-x:auto}[data-duowenwen] .dw-main-nav a{min-height:40px;padding:0 10px}[data-duowenwen] .dw-nav .dw-btn{padding:0 14px;font-size:14px}[data-duowenwen] .dw-home{padding:0 16px 72px}[data-duowenwen] .dw-hero{padding-top:32px}[data-duowenwen] .dw-hero-sub{margin-top:16px}[data-duowenwen] .dw-drop{border-radius:28px;margin-top:24px;padding:8px}[data-duowenwen] .dw-drop-zone{border-radius:20px;padding:22px 16px 20px}[data-duowenwen] .dw-drop-btn{width:100%}[data-duowenwen] .dw-hero h1{margin-top:20px}[data-duowenwen] .dw-hero-cta{margin-top:32px}[data-duowenwen] .dw-panel{border-radius:28px;margin-top:48px;padding:10px}[data-duowenwen] .dw-panel-grid{grid-template-columns:1fr;gap:10px}[data-duowenwen] .dw-pane{border-radius:20px;min-height:0;padding:16px}[data-duowenwen] .dw-pane-photo svg{max-height:120px}[data-duowenwen] .dw-lead{text-align:left;margin-top:72px}[data-duowenwen] .dw-section-head{text-align:left;margin:72px 0 20px}[data-duowenwen] .dw-bento,[data-duowenwen] .dw-promises{grid-template-columns:1fr}[data-duowenwen] .dw-bento{gap:12px}[data-duowenwen] .dw-card{border-radius:24px;padding:24px 22px}[data-duowenwen] .dw-card h2,[data-duowenwen] .dw-card h3{font-size:20px}[data-duowenwen] .dw-faq{border-radius:24px;padding:4px 20px}[data-duowenwen] .dw-faq summary{font-size:16px}[data-duowenwen] .dw-links{justify-content:flex-start}[data-duowenwen] .dw-band{border-radius:28px;margin-top:72px;padding:44px 22px}}@media (prefers-reduced-motion:reduce){[data-duowenwen] *,[data-duowenwen] :before,[data-duowenwen] :after{transition:none!important;animation:none!important}[data-duowenwen] .dw-btn:active,[data-duowenwen] .dw-drop-zone:active .dw-drop-btn{transform:none}}[data-duowenwen] .dw-nav-compact .dw-nav-bar{border-radius:24px;flex-wrap:nowrap;justify-content:space-between;gap:8px;height:48px;min-height:48px;padding:0 6px}[data-duowenwen] .dw-nav-compact .dw-brand{flex:0 auto}[data-duowenwen] .dw-avatar-wrap{position:relative}[data-duowenwen] .dw-avatar{background:var(--accent-soft);width:40px;height:40px;color:var(--ink);cursor:pointer;border:0;border-radius:50%;place-items:center;font-size:16px;font-weight:600;display:grid;overflow:hidden}[data-duowenwen] .dw-avatar img{object-fit:cover;width:100%;height:100%}[data-duowenwen] .dw-avatar svg{width:20px;height:20px}[data-duowenwen] .dw-avatar-menu{z-index:50;background:var(--glass-solid);border:1px solid var(--edge-line);border-radius:20px;flex-direction:column;width:min(260px,100vw - 24px);padding:6px;display:flex;position:absolute;top:calc(100% + 12px);right:0;box-shadow:0 12px 32px #0f172a2e}[data-duowenwen] .dw-avatar-menu[hidden]{display:none}[data-duowenwen] .dw-menu-item{width:100%;min-height:44px;color:var(--ink);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:14px;justify-content:space-between;align-items:center;gap:10px;padding:0 14px;font-size:15px;text-decoration:none;display:flex}[data-duowenwen] .dw-menu-item:hover{background:var(--accent-soft)}[data-duowenwen] .dw-menu-item:has(svg){justify-content:flex-start}[data-duowenwen] .dw-menu-item svg{width:16px;height:16px}[data-duowenwen] .dw-menu-value{color:var(--brand);font-weight:600}[data-duowenwen] .dw-menu-who{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;margin:0;padding:8px 14px 6px;font-size:13px;overflow:hidden}[data-duowenwen] .dw-hero-split{text-align:left;gap:24px;display:grid}[data-duowenwen] .dw-hero-split h1{margin:0;font-size:clamp(40px,5.6vw,72px)}[data-duowenwen] .dw-hero-split .dw-hero-sub{margin:16px 0 0}[data-duowenwen] .dw-hero-split .dw-drop{margin:0}[data-duowenwen] .dw-hero-split .dw-hero-more{text-align:center}@media (min-width:1024px){[data-duowenwen] .dw-hero-split{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);grid-template-areas:"text example""entry example";align-items:start;column-gap:48px}[data-duowenwen] .dw-hero-text{grid-area:text;padding-top:24px}[data-duowenwen] .dw-example{grid-area:example}[data-duowenwen] .dw-hero-entry{grid-area:entry}}[data-duowenwen] .dw-example{border-radius:var(--r-card);min-width:0;padding:22px 22px 18px}[data-duowenwen] .dw-example-eyebrow{letter-spacing:.04em;color:var(--accent);font-size:13px;font-weight:600}[data-duowenwen] .dw-example-tag{border-radius:var(--r-chip);min-height:24px;color:var(--accent);background:var(--accent-soft);align-items:center;padding:0 10px;font-size:12px;font-weight:600;display:inline-flex}[data-duowenwen] .dw-example-q{margin-top:12px}[data-duowenwen] .dw-example-q p{color:var(--ink);margin-top:8px;font-size:16px;font-weight:600;line-height:1.65}[data-duowenwen] .dw-example-a{border-top:1px solid var(--line);margin-top:16px;padding-top:14px}[data-duowenwen] .dw-example-asks{border-top:1px solid var(--line);flex-direction:column;gap:10px;margin-top:16px;padding:14px 0 0 12px;display:flex}[data-duowenwen] .dw-example-asks .dw-example-tag{align-self:flex-start;margin-left:-12px}[data-duowenwen] .dw-example-asks .dw-ask{text-decoration:none}[data-duowenwen] .dw-example-asks .dw-ask:hover{color:var(--accent)}[data-duowenwen] .dw-example-source{margin-top:14px;font-size:13px}[data-duowenwen] .dw-example-source a{color:var(--muted);text-underline-offset:3px}[data-duowenwen] .dw-section-sub{color:var(--muted);margin-top:10px;font-size:16px}[data-duowenwen] .dw-frontier-card{max-width:560px;margin:0 auto;padding:16px}[data-duowenwen] .dw-frontier-caption{margin-top:12px;font-size:15px;line-height:1.7}[data-duowenwen] .dw-parents-teaser{max-width:820px;margin:72px auto 0}[data-duowenwen] .dw-group-card{padding:22px 22px 20px;list-style:none}[data-duowenwen] .dw-group-card h3{margin-top:12px;font-size:19px}[data-duowenwen] .dw-group-card h3 a{color:var(--ink);text-decoration:none}[data-duowenwen] .dw-group-card h3 a:hover{color:var(--accent)}[data-duowenwen] .dw-group-card p{margin-top:6px;font-size:15px;line-height:1.7}@media (max-width:767px){[data-duowenwen] .dw-hero-split{gap:16px}[data-duowenwen] .dw-hero-split h1{font-size:36px}[data-duowenwen] .dw-hero-split .dw-hero-sub{margin-top:10px;font-size:16px;line-height:1.6}[data-duowenwen] .dw-example{border-radius:22px;padding:16px 16px 14px}[data-duowenwen] .dw-frontier-card{padding:12px}[data-duowenwen] .dw-parents-teaser{margin-top:48px}}[data-duowenwen] .kk{--kk-bg:var(--bg);--kk-surface:var(--glass-solid);--kk-ink:var(--ink);--kk-mute:var(--muted);--kk-line:var(--line);--kk-chip:var(--wash);--kk-segOn:var(--glass-solid);--kk-grid:#0b10201a;--kk-paint:#1e5c9c;--kk-paint2:#4e8bc4;--kk-needle:#b5730c;--kk-glow:#b5730c61;--kk-dark:0;width:100%;min-width:0;max-width:480px;color:var(--kk-ink);outline:none;flex-direction:column;gap:12px;margin-inline:auto;display:flex}[data-duowenwen][data-theme=night] .kk{--kk-grid:#f1f3f914;--kk-segOn:#26304a;--kk-paint:#3b88d4;--kk-paint2:#73b3ee;--kk-needle:#f2bf4e;--kk-glow:#f2bf4e9e;--kk-dark:1}@media (prefers-color-scheme:dark){[data-duowenwen]:not([data-theme]) .kk{--kk-grid:#f1f3f914;--kk-segOn:#26304a;--kk-paint:#3b88d4;--kk-paint2:#73b3ee;--kk-needle:#f2bf4e;--kk-glow:#f2bf4e9e;--kk-dark:1}}[data-duowenwen] .kk .kk-top{align-items:center;display:flex}[data-duowenwen] .kk .kk-kicker{letter-spacing:.12em;color:var(--kk-mute);font-variant-numeric:tabular-nums;font-size:12px;line-height:1}[data-duowenwen] .kk .kk-kicker b{color:var(--kk-needle);font-weight:650}[data-duowenwen] .kk .kk-dots{gap:5px;display:flex}[data-duowenwen] .kk .kk-dots i{background:var(--kk-line);border-radius:2px;flex:1;height:3px;transition:background .45s cubic-bezier(.2,.8,.2,1)}[data-duowenwen] .kk .kk-dots i.on{background:var(--kk-needle)}[data-duowenwen] .kk .kk-cap{min-height:2.8em;color:var(--kk-ink);align-items:center;margin:0;font-size:19px;font-weight:650;line-height:1.4;display:flex}[data-duowenwen] .kk .kk-cap.kk-in{animation:.55s cubic-bezier(.2,.8,.2,1) kk-cap-in}@keyframes kk-cap-in{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}[data-duowenwen] .kk .kk-box{aspect-ratio:50/47;background:var(--kk-surface);width:100%;min-height:250px;max-height:430px;box-shadow:0 0 0 1px var(--kk-line);border-radius:18px;position:relative;overflow:hidden}[data-duowenwen] .kk .kk-box canvas{touch-action:pan-y;-webkit-user-select:none;user-select:none;width:100%;height:100%;display:block;position:absolute;inset:0}[data-duowenwen] .kk .kk-box.kk-grab canvas{touch-action:none}[data-duowenwen] .kk .kk-hint{letter-spacing:.06em;color:var(--kk-mute);pointer-events:none;font-size:11px;line-height:1;position:absolute;bottom:10px;left:12px}[data-duowenwen] .kk .kk-instr{grid-template-columns:112px minmax(0,1fr);align-items:center;gap:12px;display:grid}[data-duowenwen] .kk .kk-dial{width:112px;height:72px;display:block}[data-duowenwen] .kk .kk-read{min-width:0}[data-duowenwen] .kk .kk-num{align-items:baseline;gap:8px;min-width:0;display:flex}[data-duowenwen] .kk .kk-num span{font-variant-numeric:tabular-nums;letter-spacing:-.01em;font-size:30px;font-weight:650;line-height:1}[data-duowenwen] .kk .kk-num small{color:var(--kk-mute);white-space:nowrap;font-size:12px}[data-duowenwen] .kk .kk-scale{width:100%;height:44px;margin-top:4px;display:block}[data-duowenwen] .kk .kk-row{align-items:center;gap:10px;min-width:0;display:flex}[data-duowenwen] .kk .kk-play{background:var(--kk-needle);width:44px;height:44px;color:var(--kk-surface);cursor:pointer;box-shadow:0 6px 16px -6px var(--kk-glow);border:0;border-radius:22px;flex:none;place-items:center;padding:0;display:grid}[data-duowenwen] .kk .kk-play svg{fill:currentColor;width:16px;height:16px}[data-duowenwen] .kk input[type=range]{width:100%;min-width:0;accent-color:var(--kk-needle);flex:1;height:32px;margin:0}[data-duowenwen] .kk .kk-seg{border-radius:var(--r-control);background:var(--kk-chip);flex:1;gap:3px;min-width:0;padding:3px;display:flex}[data-duowenwen] .kk .kk-seg button{min-width:0;height:38px;color:var(--kk-mute);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:11px;flex:1;font-size:15px;font-weight:650;line-height:1;transition:background .25s,color .25s}[data-duowenwen] .kk .kk-seg button.on{background:var(--kk-segOn);color:var(--kk-ink);box-shadow:0 1px 3px #0b10201f}[data-duowenwen] .kk .kk-seg.kk-mono button{font-variant-numeric:tabular-nums}[data-duowenwen] .kk .kk-chip{border-radius:var(--r-control);border:1px solid var(--kk-line);height:44px;color:var(--kk-ink);font:inherit;cursor:pointer;background:0 0;flex:none;align-items:center;gap:6px;padding:0 14px;font-size:15px;font-weight:650;line-height:1;transition:background .25s,color .25s;display:flex}[data-duowenwen] .kk .kk-chip svg{stroke:currentColor;fill:none;stroke-width:2px;width:16px;height:16px}[data-duowenwen] .kk .kk-chip.on{background:var(--kk-ink);color:var(--kk-surface);border-color:var(--kk-ink)}[data-duowenwen] .kk .kk-lab{min-width:96px;color:var(--kk-mute);font-variant-numeric:tabular-nums;flex:none;font-size:13px}[data-duowenwen] .kk .kk-lab b{color:var(--kk-ink);font-size:14px;font-weight:650}[data-duowenwen] .kk .kk-nav{gap:10px;margin-top:2px;display:flex}[data-duowenwen] .kk .kk-nav button{border-radius:var(--r-control);border:1px solid var(--kk-line);height:48px;color:var(--kk-ink);font:inherit;cursor:pointer;background:0 0;flex:1;font-size:16px;font-weight:650;line-height:1}[data-duowenwen] .kk .kk-nav button.kk-go{background:var(--kk-ink);color:var(--kk-surface);border-color:var(--kk-ink)}[data-duowenwen] .kk .kk-nav button:disabled{opacity:.35;cursor:default}[data-duowenwen] .kk .kk-hide{display:none!important}@media (max-width:380px){[data-duowenwen] .kk .kk-chip{padding:0 10px}[data-duowenwen] .kk .kk-lab{min-width:76px}}[data-duowenwen] .dw-kk-ideas{margin-top:16px}[data-duowenwen] .dw-kk-ideas summary{cursor:pointer;font-weight:650}[data-duowenwen] .dw-kk-ideas ol{color:var(--muted);flex-direction:column;gap:8px;margin:10px 0 0;padding-left:1.3em;font-size:15px;line-height:1.7;display:flex}[data-duowenwen] .dw-kk-ideas ol b{color:var(--ink);font-weight:650}[data-duowenwen] .dw-nav-actions{align-items:center;gap:4px;display:flex}[data-duowenwen] .dw-new-chat{color:var(--muted);background:0 0}[data-duowenwen] .dw-new-chat:hover{background:var(--accent-soft);color:var(--ink)}[data-duowenwen] .dw-chat{flex-direction:column;flex:1;display:flex}[data-duowenwen] .dw-chat-end{height:calc(150px + env(safe-area-inset-bottom));flex:none}[data-duowenwen] .dw-chat-hello{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:14px;min-height:52dvh;padding:32px 8px;display:flex}[data-duowenwen] .dw-chat-hello-title{font-family:var(--font-display,inherit);letter-spacing:-.01em;color:var(--ink);font-size:clamp(26px,6.4vw,34px);font-weight:600;line-height:1.25}[data-duowenwen] .dw-chat-hello-body{max-width:30em;color:var(--muted);font-size:15px;line-height:1.7}[data-duowenwen] .dw-chat-chip{border:1px solid var(--edge-line);border-radius:var(--r-chip);background:var(--glass-solid);min-height:44px;color:var(--ink);cursor:pointer;justify-content:center;align-items:center;padding:0 20px;font-size:15px;display:inline-flex;box-shadow:0 4px 16px #0f172a0f}[data-duowenwen] .dw-chat-chip:hover{background:var(--accent-soft)}[data-duowenwen] .dw-chat-chip-primary{background:var(--accent-fill);color:var(--on-brand);border-color:#0000;font-weight:500}[data-duowenwen] .dw-chat-chip-primary:hover{background:var(--accent-fill-press)}[data-duowenwen] .dw-chat-chip:disabled{opacity:.5;cursor:not-allowed}[data-duowenwen] .dw-chat-thread{flex-direction:column;gap:28px;padding-top:20px;display:flex}[data-duowenwen] .dw-chat-user{flex-direction:column;align-items:flex-end;gap:8px;scroll-margin-top:84px;display:flex}[data-duowenwen] .dw-chat-user:focus{outline:none}[data-duowenwen] .dw-chat-photos>div{justify-content:flex-end}[data-duowenwen] .dw-chat-photos img{border-radius:18px}[data-duowenwen] .dw-chat-photos button{border:0;padding:0}[data-duowenwen] .dw-chat-bubble{background:var(--wash);max-width:85%;color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:24px 24px 6px;padding:12px 18px;font-size:16px;line-height:1.7}[data-duowenwen] .dw-chat-ai{min-width:0;font-size:16px;line-height:1.8}[data-duowenwen] .dw-chat-system{color:var(--muted);font-size:13px}[data-duowenwen] .dw-chat-thinking{color:var(--muted);align-self:flex-start;align-items:center;gap:10px;font-size:14px;list-style:none;display:flex}[data-duowenwen] .dw-chat-thinking-mark{animation:1.6s ease-in-out infinite dw-chat-breathe;display:inline-flex}@keyframes dw-chat-breathe{0%,to{opacity:.45;transform:scale(.92)}50%{opacity:1;transform:scale(1)}}[data-duowenwen] .dw-chat-actions{align-items:center;gap:4px;margin-top:14px;margin-left:-8px;display:flex}[data-duowenwen] .dw-chat-actions button{border-radius:var(--r-chip);min-width:40px;min-height:40px;color:var(--muted);cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:14px;display:inline-flex}[data-duowenwen] .dw-chat-actions button:hover{background:var(--accent-soft);color:var(--ink)}[data-duowenwen] .dw-chat-actions button:disabled{opacity:.4;cursor:not-allowed}[data-duowenwen] .dw-chat-user-meta{justify-content:flex-end;align-items:center;gap:4px;margin-top:-6px;display:flex}[data-duowenwen] .dw-chat-actions-user{opacity:0;gap:0;margin:0 -6px 0 0;transition:opacity .15s}[data-duowenwen] .dw-chat-actions-user button{min-width:36px;min-height:36px;padding:0 8px;font-size:13px}[data-duowenwen] .dw-chat-user:hover .dw-chat-actions-user,[data-duowenwen] .dw-chat-actions-user:focus-within,[data-duowenwen] .dw-chat-actions-user[data-open]{opacity:1}@media (hover:none){[data-duowenwen] .dw-chat-actions-user{opacity:1}}[data-duowenwen] .dw-chat-edited{color:var(--muted);font-size:12px}[data-duowenwen] .dw-chat-bubble[data-editing]{box-shadow:0 0 0 2px var(--accent)}[data-duowenwen] .dw-chat-notice{color:var(--muted);margin-top:4px;font-size:12px;line-height:1.6}[data-duowenwen] .dw-chat-notes{flex-direction:column;gap:12px;margin-top:24px;display:flex}[data-duowenwen] .dw-chat-prefs summary{cursor:pointer;color:var(--muted);font-size:12px}[data-duowenwen] .dw-chat-dock{z-index:30;padding:24px 12px calc(10px + env(safe-area-inset-bottom));background:linear-gradient(to bottom, transparent, var(--bg) 38%);pointer-events:none;flex-direction:column;align-items:center;gap:8px;display:flex;position:fixed;bottom:0;left:0;right:0}[data-duowenwen] .dw-chat-dock>*{pointer-events:auto;width:100%;max-width:736px}[data-duowenwen] .dw-chat-jump{border:1px solid var(--edge-line);background:var(--glass-solid);height:44px;color:var(--ink);cursor:pointer;border-radius:50%;place-items:center;display:grid;box-shadow:0 6px 20px #0f172a1f;width:44px!important}[data-duowenwen] .dw-chat-pinned{border-radius:var(--r-chip);background:var(--accent-soft);max-width:min(100%,736px);color:var(--ink);align-items:center;gap:8px;padding:4px 6px 4px 14px;font-size:13px;display:flex;width:fit-content!important}[data-duowenwen] .dw-chat-pinned button{width:28px;height:28px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:50%;font-size:16px}[data-duowenwen] .dw-chat-composer{box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 1px var(--edge-line), 0 10px 30px #0f172a1a;border-radius:30px}[data-duowenwen] .dw-chat-composer-row{align-items:flex-end;gap:4px;padding:8px;display:flex}[data-duowenwen] .dw-chat-composer-row button[aria-label=添加作业照片]{border-radius:50%;width:44px;height:44px}[data-duowenwen] .dw-chat-input{resize:none;min-width:0;min-height:44px;max-height:240px;color:var(--ink);background:0 0;border:0;flex:1;padding:10px 4px;font-size:16px;line-height:1.5}[data-duowenwen] .dw-chat-input:focus-visible{outline:none}[data-duowenwen] .dw-chat-input::placeholder{color:var(--muted);opacity:.75}[data-duowenwen] .dw-chat-send{background:var(--accent-fill);width:44px;height:44px;color:var(--on-brand);cursor:pointer;border:0;border-radius:50%;flex:none;place-items:center;display:grid}[data-duowenwen] .dw-chat-send:hover{background:var(--accent-fill-press)}[data-duowenwen] .dw-chat-send:disabled{background:var(--accent-soft);color:var(--muted);cursor:not-allowed}[data-duowenwen] .dw-chat-foot{color:var(--muted);text-align:center;flex-wrap:wrap;justify-content:center;gap:2px 10px;font-size:11px;line-height:1.5;display:flex}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-chat-thinking-mark{animation:none}}[data-duowenwen] .dw-drawer-scrim{z-index:60;background:#0b102047;position:fixed;inset:0}[data-duowenwen] .dw-drawer{z-index:61;width:min(320px,86vw);padding:calc(12px + env(safe-area-inset-top)) 8px calc(8px + env(safe-area-inset-bottom));background:var(--glass-solid);flex-direction:column;animation:.18s ease-out dw-drawer-in;display:flex;position:fixed;top:0;bottom:0;left:0;box-shadow:12px 0 40px #0f172a2e}[data-duowenwen] .dw-drawer[hidden],[data-duowenwen] .dw-drawer-scrim[hidden]{display:none}@keyframes dw-drawer-in{0%{opacity:0;transform:translate(-24px)}to{opacity:1;transform:none}}[data-duowenwen] .dw-drawer-head{justify-content:space-between;align-items:center;padding:0 4px 8px 16px;font-size:20px;display:flex}[data-duowenwen] .dw-drawer-scroll{overscroll-behavior:contain;flex:1;min-height:0;overflow-y:auto}[data-duowenwen] .dw-drawer-item{border-radius:var(--r-chip);width:100%;min-height:48px;color:var(--ink);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:14px;padding:0 16px;font-size:16px;text-decoration:none;display:flex}[data-duowenwen] .dw-drawer-item:hover{background:var(--accent-soft)}[data-duowenwen] .dw-drawer-thread{font-size:15px}[data-duowenwen] .dw-drawer-thread[aria-current=page]{background:var(--wash);font-weight:600}[data-duowenwen] .dw-drawer-icon{width:22px;height:22px;display:inline-flex}[data-duowenwen] .dw-drawer-icon svg{width:22px;height:22px}[data-duowenwen] .dw-drawer-label{color:var(--muted);margin:20px 16px 6px;font-size:13px}[data-duowenwen] .dw-drawer-empty{color:var(--muted);margin:4px 16px;font-size:14px}[data-duowenwen] .dw-drawer-foot{background:var(--wash);border-radius:24px;align-items:center;gap:12px;margin-top:8px;padding:10px 12px;display:flex}[data-duowenwen] .dw-drawer-foot .dw-avatar{flex:none}[data-duowenwen] .dw-drawer-text-btn{color:var(--muted);cursor:pointer;background:0 0;border:0;font-size:14px}[data-duowenwen] .dw-new-chat svg{width:22px;height:22px}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-drawer{animation:none}}[data-duowenwen] .dw-screens{--screens-w:min(1080px, calc(100vw - 48px));width:var(--screens-w);margin-left:calc((100% - var(--screens-w)) / 2);flex-direction:column;display:flex;position:relative}[data-duowenwen] .dw-screen{border-top:1px solid var(--line);text-align:center;scroll-snap-align:start;flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:100svh;padding:96px 0 150px;scroll-margin-top:0;display:flex}[data-duowenwen] .dw-screen-tall{justify-content:flex-start}[data-duowenwen] .dw-screen-num{color:var(--accent);letter-spacing:.18em;font-variant-numeric:tabular-nums;font-size:13px;font-weight:600}[data-duowenwen] .dw-screen-h{max-width:18em;font-family:var(--font-display,inherit);letter-spacing:-.015em;color:var(--ink);text-wrap:balance;font-size:clamp(30px,4.2vw,52px);font-weight:650;line-height:1.15}[data-duowenwen] .dw-screen-sub{max-width:36em;color:var(--muted);text-wrap:pretty;font-size:17px;line-height:1.7}[data-duowenwen] .dw-screen-sub.prose p{margin:0}[data-duowenwen] .dw-screen-body{text-align:left;width:100%;max-width:820px;margin-top:12px}[data-duowenwen] .dw-screen-prose{max-width:30em;color:var(--ink);text-wrap:pretty;flex-direction:column;gap:18px;font-size:clamp(18px,1.7vw,22px);line-height:1.7;display:flex}[data-duowenwen] .dw-screen-more{margin-top:8px}[data-duowenwen] .dw-screen-more-row{flex-wrap:wrap;gap:10px;display:flex}[data-duowenwen] .dw-screen-steps,[data-duowenwen] .dw-screen-grid,[data-duowenwen] .dw-screen-qa{text-align:left;gap:20px;width:100%;margin-top:16px;padding:0;list-style:none;display:grid}[data-duowenwen] .dw-screen-steps{grid-template-columns:repeat(3,minmax(0,1fr))}[data-duowenwen] .dw-screen-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}[data-duowenwen] .dw-screen-qa{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}[data-duowenwen] .dw-screen-steps h3,[data-duowenwen] .dw-screen-grid h3{color:var(--ink);margin-bottom:8px;font-size:20px;font-weight:650}[data-duowenwen] .dw-screen-steps p,[data-duowenwen] .dw-screen-grid p{color:var(--muted);font-size:15px;line-height:1.7}[data-duowenwen] .dw-screen-step-no{font-family:var(--font-display,inherit);color:var(--accent);margin-bottom:18px;font-size:56px;font-weight:600;line-height:1;display:block}[data-duowenwen] .dw-screen-qa article{padding:28px 28px 24px}[data-duowenwen] .dw-screen-qa h3{color:var(--ink);margin:0 0 10px;font-size:19px;font-weight:650}[data-duowenwen] .dw-screen-qa p{color:var(--muted);margin:0;font-size:15px;line-height:1.75}[data-duowenwen] .dw-screen-start{border-top:0}[data-duowenwen] .dw-screen-next{color:var(--muted);flex-direction:column;align-items:center;gap:2px;font-size:13px;text-decoration:none;animation:2.4s ease-in-out infinite dw-nudge;display:inline-flex;position:absolute;top:-64px;left:50%;transform:translate(-50%)}[data-duowenwen] .dw-screen-next:hover{color:var(--ink)}@keyframes dw-nudge{0%,to{translate:0}50%{translate:0 5px}}@media (min-width:768px){[data-duowenwen] .dw-chat:has(.dw-screens)>.dw-chat-hello{scroll-snap-align:start;min-height:calc(100svh - 72px)}[data-duowenwen] .dw-chat:has(.dw-screens):has(.dw-chat-dock)>.dw-chat-hello{padding-bottom:150px}html:has([data-duowenwen] .dw-screens){scroll-snap-type:y proximity}}@media (max-width:767px){[data-duowenwen] .dw-screens{--screens-w:100%}[data-duowenwen] .dw-screen{text-align:left;align-items:stretch;gap:14px;min-height:0;padding:56px 0}[data-duowenwen] .dw-screen-h{font-size:26px}[data-duowenwen] .dw-screen-sub,[data-duowenwen] .dw-screen-prose{font-size:15px}[data-duowenwen] .dw-screen-steps,[data-duowenwen] .dw-screen-qa{grid-template-columns:1fr;gap:12px}[data-duowenwen] .dw-screen-steps li{grid-template-columns:auto 1fr;column-gap:16px;padding:20px 18px;display:grid}[data-duowenwen] .dw-screen-steps li p{grid-column:2}[data-duowenwen] .dw-screen-step-no{grid-row:span 2;margin:0;font-size:34px}[data-duowenwen] .dw-screen-qa article{padding:20px 18px}[data-duowenwen] .dw-screen-next{display:none}}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-screen-next{animation:none}}[data-duowenwen] .dw-home-example{flex-direction:column;gap:16px;display:flex}[data-duowenwen] .dw-home-price{text-align:center}[data-duowenwen] .dw-lang-switch{border-radius:var(--r-chip);min-height:40px;color:var(--muted);align-items:center;padding:0 12px;font-size:14px;text-decoration:none;display:inline-flex}[data-duowenwen] .dw-lang-switch:hover{background:var(--accent-soft);color:var(--ink)}@media (max-width:767px){[data-duowenwen] .dw-chat-hello{gap:10px;min-height:44dvh;padding:24px 4px}[data-duowenwen] .dw-chat-hello-title{font-size:24px}[data-duowenwen] .dw-chat-hello-body{font-size:14px}[data-duowenwen] .dw-chat-chip{min-height:40px;padding:0 16px;font-size:14px}[data-duowenwen] .dw-chat-thread{gap:22px}[data-duowenwen] .dw-chat-bubble,[data-duowenwen] .dw-chat-ai,[data-duowenwen] .dw-chat-ai .dw-homework-body{font-size:15px;line-height:1.7}[data-duowenwen] .dw-chat-input{font-size:16px}[data-duowenwen] .dw-section-head h2{font-size:22px}[data-duowenwen] .dw-section-sub{font-size:14px}[data-duowenwen] .dw-example-q p,[data-duowenwen] .dw-example .dw-homework-body{font-size:15px}[data-duowenwen] .dw-parents-teaser h2{font-size:18px}[data-duowenwen] .dw-parents-teaser p,[data-duowenwen] .dw-frontier-caption{font-size:14px}[data-duowenwen] .dw-faq summary{font-size:15px}[data-duowenwen] .dw-faq .dw-faq-a{font-size:14px}[data-duowenwen] .dw-card{padding:20px}}[data-duowenwen] .dw-nav-narrow{display:none}[data-duowenwen] .dw-nav-wide{display:contents}@media (max-width:767px){[data-duowenwen] .dw-nav-wide{display:none}[data-duowenwen] .dw-nav-narrow{display:contents}}[data-duowenwen] .dw-lang-switch,[data-duowenwen] .dw-drawer-item,[data-duowenwen] .dw-menu-item{white-space:nowrap}[data-duowenwen] .dw-nav-compact .dw-nav-bar{height:52px;min-height:52px;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0;border:0;padding:0}[data-duowenwen] .dw-nav-compact .dw-avatar,[data-duowenwen] .dw-nav-compact .dw-new-chat{background:var(--glass-solid);width:44px;height:44px;color:var(--ink);box-shadow:0 2px 12px #0f172a14, 0 0 0 1px var(--edge-line)}[data-duowenwen] .dw-nav-compact .dw-brand{gap:6px;padding:0 8px}[data-duowenwen] .dw-nav-compact .dw-brand .dw-logo{width:22px;height:22px}[data-duowenwen] .dw-nav-compact .dw-brand-name{letter-spacing:0;font-size:17px;font-weight:600}[data-duowenwen] .dw-nav-compact{background:linear-gradient(to bottom, var(--bg) 55%, transparent);padding-bottom:6px}[data-duowenwen] .dw-account-tabs{gap:6px;margin:-16px 0 24px;display:flex;overflow-x:auto}[data-duowenwen] .dw-account-tabs a{border-radius:var(--r-chip);color:var(--muted);flex:none;padding:8px 16px;font-size:14px;text-decoration:none}[data-duowenwen] .dw-account-tabs a[aria-current=page]{background:var(--accent-soft);color:var(--ink);font-weight:600}[data-duowenwen] .dw-usage-table{border-collapse:collapse;width:100%;margin-top:12px;font-size:15px}[data-duowenwen] .dw-usage-table th,[data-duowenwen] .dw-usage-table td{border-bottom:1px solid var(--line);text-align:left;padding:10px 8px}[data-duowenwen] .dw-usage-table th{color:var(--muted);font-weight:500}[data-duowenwen] .dw-settings{flex-direction:column;gap:16px;display:flex}[data-duowenwen] .dw-settings-switch{color:var(--ink);align-items:flex-start;gap:10px;margin-top:8px;font-size:15px;display:flex}[data-duowenwen] .dw-settings-switch input{width:18px;height:18px;accent-color:var(--accent-fill);margin-top:4px}[data-duowenwen] .dw-chat-composer{flex-direction:column;padding:8px;display:flex}[data-duowenwen] .dw-chat-composer[data-dragging]{box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 2px var(--accent-fill), 0 10px 30px #0f172a1a}[data-duowenwen] .dw-chat-composer .dw-chat-input{padding:10px 12px 4px}[data-duowenwen] .dw-chat-composer-bar{align-items:center;gap:8px;display:flex}[data-duowenwen] .dw-chat-plus{width:44px;height:44px;color:var(--ink);cursor:pointer;background:0 0;border:0;border-radius:50%;place-items:center;display:grid}[data-duowenwen] .dw-chat-plus:hover{background:var(--accent-soft)}[data-duowenwen] .dw-chat-plus:disabled{opacity:.4}[data-duowenwen] .dw-chat-toggle{border-radius:var(--r-chip);background:var(--wash);min-height:36px;color:var(--muted);cursor:pointer;align-items:center;gap:6px;padding:0 12px;font-size:14px;display:inline-flex}[data-duowenwen] .dw-chat-toggle:has(input:checked){background:var(--accent-soft);color:var(--accent);font-weight:600}[data-duowenwen] .dw-chat-toggle input{width:16px;height:16px;accent-color:var(--accent-fill)}[data-duowenwen] .dw-chat-attach{gap:8px;padding:4px 4px 0;display:flex;overflow-x:auto}[data-duowenwen] .dw-chat-attach li{background:var(--wash);border-radius:18px;flex:none;width:116px;height:76px;position:relative;overflow:hidden}[data-duowenwen] .dw-chat-attach img{object-fit:cover;width:100%;height:100%}[data-duowenwen] .dw-chat-attach li>span{height:100%;color:var(--muted);place-items:center;font-size:12px;display:grid}[data-duowenwen] .dw-chat-attach button{color:#fff;cursor:pointer;background:#0f172ab8;border:0;border-radius:50%;place-items:center;width:26px;height:26px;display:grid;position:absolute;top:5px;right:5px;box-shadow:0 1px 4px #00000040}[data-duowenwen] .dw-chat-attach button:hover{background:#0f172ae0}[data-duowenwen] .dw-chat-attach button:disabled{opacity:.5;cursor:default}[data-duowenwen] .dw-sheet-scrim{z-index:70;background:#0b102047;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}[data-duowenwen] .dw-sheet{width:min(100%,560px);padding:10px 16px calc(20px + env(safe-area-inset-bottom));background:var(--glass-solid);border-radius:28px 28px 0 0;animation:.18s ease-out dw-sheet-in;box-shadow:0 -8px 32px #0f172a29}@keyframes dw-sheet-in{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}[data-duowenwen] .dw-sheet-grip{background:var(--line);border-radius:3px;width:40px;height:5px;margin:0 auto 14px;display:block}[data-duowenwen] .dw-sheet-tiles{grid-auto-columns:1fr;grid-auto-flow:column;gap:12px;display:grid}[data-duowenwen] .dw-sheet-tiles button{background:var(--wash);height:120px;color:var(--ink);cursor:pointer;border:0;border-radius:28px;flex-direction:column;justify-content:center;align-items:center;gap:8px;font-size:16px;display:flex}[data-duowenwen] .dw-sheet-hint{text-align:center;color:var(--muted);margin-top:12px;font-size:13px}[data-duowenwen] .dw-sheet-hint+.dw-sheet-hint{margin-top:4px}@media not ((hover:hover) and (pointer:fine)){[data-duowenwen] .dw-fine-pointer-only{display:none}}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-sheet{animation:none}}[data-duowenwen] .dw-agree{color:var(--ink);align-items:flex-start;gap:8px;margin-top:14px;font-size:14px;line-height:1.6;display:flex}[data-duowenwen] .dw-agree input{width:18px;height:18px;accent-color:var(--accent-fill);flex:none;margin-top:2px}[data-duowenwen] .dw-agree-doc{color:var(--accent);font:inherit;cursor:pointer;background:0 0;border:0;padding:0}[data-duowenwen] .dw-agree-nudge{color:var(--danger,#c2410c);margin-top:6px;font-size:13px}[data-duowenwen] .dw-agree-locked{opacity:.55}[data-duowenwen] .dw-agree-sheet{max-height:86dvh;overflow-y:auto}[data-duowenwen] .dw-agree-title{color:var(--ink);font-size:18px;font-weight:600}[data-duowenwen] .dw-agree-list{color:var(--muted);margin-top:10px;padding-left:20px;font-size:14px;line-height:1.7;list-style:outside}[data-duowenwen] .dw-agree-list li+li{margin-top:6px}[data-duowenwen] .dw-agree-links{color:var(--muted);margin-top:12px;font-size:13px}[data-duowenwen] .dw-agree-links a{color:var(--accent)}[data-duowenwen] .dw-agree-actions{justify-content:flex-end;gap:10px;margin-top:18px;display:flex}[data-duowenwen] .dw-chat-docked-notes{overscroll-behavior:contain;flex-direction:column;gap:10px;max-height:62dvh;display:flex;overflow-y:auto}[data-duowenwen] .dw-chat-docked-notes:empty{display:none}[data-duowenwen] .dw-chat-docked-notes>p[role=status]{background:var(--glass-solid);box-shadow:0 0 0 1px var(--edge-line);border-radius:16px;padding:8px 14px}[data-duowenwen] .dw-chat-docked-notes .dw-try-card{background:var(--glass-solid);padding:20px}[data-duowenwen] .dw-chat-dock>.dw-agree,[data-duowenwen] .dw-chat-dock>.dw-agree-nudge{background:var(--glass-solid);box-shadow:0 0 0 1px var(--edge-line);border-radius:16px;margin:0;padding:8px 14px}[data-duowenwen] .dw-chat-dock>.dw-agree-locked{opacity:1}[data-duowenwen] .dw-section-head{flex-wrap:wrap;align-items:baseline;gap:4px 8px;margin:0 0 6px;display:flex}[data-duowenwen] .dw-section-label{letter-spacing:.04em;color:var(--accent);font-size:13px;font-weight:650}[data-duowenwen] .dw-section-aside{color:var(--muted);font-size:12px}[data-duowenwen] .dw-section-next{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}[data-duowenwen] .dw-section-head+.dw-homework-body>:first-child,[data-duowenwen] .dw-section-head+.dw-homework-body h3:first-child{margin-top:0}[data-duowenwen] .dw-rec{background:var(--wash);border-radius:16px;width:100%;margin:0 0 20px}[data-duowenwen] .dw-rec-summary{cursor:pointer;align-items:baseline;gap:8px;padding:10px 14px;list-style:none;display:flex}[data-duowenwen] .dw-rec-summary::-webkit-details-marker{display:none}[data-duowenwen] .dw-rec-flag{color:#b45309;text-align:center;background:#d9770629;border-radius:9px;align-self:center;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-weight:650;line-height:18px}[data-duowenwen] .dw-rec-chevron{border-right:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);align-self:center;width:7px;height:7px;margin-left:auto;transition:transform .15s;transform:rotate(-45deg)}[data-duowenwen] .dw-rec[open] .dw-rec-chevron{transform:rotate(45deg)}[data-duowenwen] .dw-rec-note{color:#b45309;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:0 14px 8px;font-size:12px;display:flex}[data-duowenwen] .dw-rec-note button{border-radius:var(--r-chip);color:inherit;cursor:pointer;background:0 0;border:1px solid;padding:2px 10px;font-size:12px}[data-duowenwen] .dw-homework-body.dw-rec-body{color:var(--muted);padding:0 14px 12px;font-size:12px;line-height:1.6}[data-duowenwen] .dw-homework-body.dw-rec-body p{margin:.4em 0}[data-duowenwen] .dw-homework-body.dw-rec-body h3{margin:.8em 0 .2em;font-size:1em}[data-duowenwen] .dw-homework-body.dw-rec-body ol,[data-duowenwen] .dw-homework-body.dw-rec-body ul{padding-left:1.4em}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-rec-chevron{transition:none}}[data-duowenwen] .dw-homework-body mark[data-uncertain]{color:#b45309;background:#d9770629;border-radius:4px;padding:0 4px}[data-duowenwen] .dw-nav-compact{padding:4px 10px;top:0}[data-duowenwen] .dw-nav-compact .dw-nav-bar{height:40px;min-height:40px;margin-top:4px}[data-duowenwen] .dw-nav-compact .dw-avatar,[data-duowenwen] .dw-nav-compact .dw-new-chat{width:36px;height:36px;font-size:14px}[data-duowenwen] .dw-nav-compact .dw-new-chat svg,[data-duowenwen] .dw-nav-compact .dw-avatar svg{width:18px;height:18px}[data-duowenwen] .dw-nav-compact .dw-nav-actions{gap:6px}[data-duowenwen] .dw-nav-compact .dw-brand-name{font-size:16px}[data-duowenwen] .dw-chat-dock{padding:12px 10px calc(6px + env(safe-area-inset-bottom));background:linear-gradient(to bottom, transparent, var(--bg) 45%);gap:6px}[data-duowenwen] .dw-chat-composer{border-radius:26px;padding:4px}[data-duowenwen] .dw-chat-composer-bar{align-items:flex-end;gap:2px}[data-duowenwen] .dw-chat-composer .dw-chat-input{min-height:40px;padding:9px 6px;line-height:1.4}[data-duowenwen] .dw-chat-plus,[data-duowenwen] .dw-chat-send{flex:none;width:40px;height:40px}[data-duowenwen] .dw-chat-composer-opts .dw-chat-toggle{min-height:30px;font-size:13px}[data-duowenwen] .dw-chat-attach li{border-radius:16px;width:96px;height:64px}[data-duowenwen] .dw-chat-jump{height:36px;width:36px!important}[data-duowenwen] .dw-chat-user{scroll-margin-top:56px}[data-duowenwen] .dw-photo-viewer{color:#fff;background:#000;border:0;width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;padding:0}[data-duowenwen] .dw-photo-viewer::backdrop{background:#000}[data-duowenwen] .dw-photo-stage{touch-action:none;-webkit-user-select:none;user-select:none;place-items:center;width:100%;height:100%;display:grid;overflow:hidden}[data-duowenwen] .dw-photo-stage img{object-fit:contain;transform-origin:50%;will-change:transform;-webkit-user-drag:none;max-width:100%;max-height:100%}[data-duowenwen] .dw-photo-close{top:calc(12px + env(safe-area-inset-top));z-index:1;color:#fff;cursor:pointer;background:#ffffff29;border:0;border-radius:50%;width:40px;height:40px;font-size:24px;line-height:40px;position:absolute;right:12px}[data-duowenwen] .dw-acct-page{justify-content:center;width:100%;padding:24px 16px 48px;display:flex}[data-duowenwen] .dw-acct{background:var(--glass-solid);width:100%;max-width:980px;min-height:min(720px,80dvh);box-shadow:0 0 0 1px var(--edge-line), 0 18px 48px #0f172a1a;border-radius:24px;grid-template-columns:220px minmax(0,1fr);display:grid;overflow:hidden}[data-duowenwen] .dw-acct-nav{border-right:1px solid var(--line);background:var(--wash);flex-direction:column;gap:2px;padding:20px 12px;display:flex}[data-duowenwen] .dw-acct-nav-h{color:var(--muted);margin:0 10px 8px;font-size:12px}[data-duowenwen] .dw-acct-nav a{min-height:40px;color:var(--ink);white-space:nowrap;border-radius:10px;align-items:center;gap:10px;padding:0 10px;font-size:15px;text-decoration:none;display:flex}[data-duowenwen] .dw-acct-nav a svg{width:18px;height:18px;color:var(--muted);flex:none}[data-duowenwen] .dw-acct-nav a:hover{background:var(--accent-soft)}[data-duowenwen] .dw-acct-nav a[aria-current=page]{background:var(--glass-solid);box-shadow:0 0 0 1px var(--edge-line);font-weight:600}[data-duowenwen] .dw-acct-main{min-width:0;padding:28px 32px 32px;position:relative}[data-duowenwen] .dw-acct-close{width:36px;height:36px;color:var(--muted);border-radius:50%;place-items:center;font-size:22px;text-decoration:none;display:grid;position:absolute;top:16px;right:16px}[data-duowenwen] .dw-acct-close:hover{background:var(--accent-soft);color:var(--ink)}[data-duowenwen] .dw-acct-panel{flex-direction:column;display:flex}[data-duowenwen] .dw-acct-h-row{align-items:baseline;gap:10px;margin-right:40px;display:flex}[data-duowenwen] .dw-acct-h{color:var(--ink);margin:0 40px 12px 0;font-size:17px;font-weight:600}[data-duowenwen] .dw-acct-h-row .dw-acct-h{margin:0}[data-duowenwen] .dw-acct-aside{color:var(--muted);font-size:14px}[data-duowenwen] .dw-acct-lead{border-bottom:1px solid var(--line);color:var(--ink);margin:14px 0 6px;padding-bottom:18px;font-size:22px;font-weight:600;line-height:1.35}[data-duowenwen] .dw-acct-group{margin-top:18px;padding-top:6px}[data-duowenwen] .dw-acct-group+.dw-acct-group{border-top:1px solid var(--line);padding-top:18px}[data-duowenwen] .dw-acct-row{align-items:center;gap:16px;padding:14px 0;display:flex}[data-duowenwen] .dw-acct-panel>.dw-acct-row+.dw-acct-row{border-top:1px solid var(--line)}[data-duowenwen] .dw-acct-row-text{flex:1;min-width:0}[data-duowenwen] .dw-acct-row-title{color:var(--ink);margin:0;font-size:15px;font-weight:500}[data-duowenwen] .dw-acct-row-sub{color:var(--muted);margin:4px 0 0;font-size:13px;line-height:1.55}[data-duowenwen] .dw-acct-note{color:var(--accent)}[data-duowenwen] .dw-acct-row-ctl{flex:none}[data-duowenwen] .dw-acct-val{color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:15px}[data-duowenwen] .dw-acct-big{color:var(--ink);font-variant-numeric:tabular-nums;font-size:24px;font-weight:650}[data-duowenwen] .dw-acct-actions{flex-wrap:wrap;gap:10px;margin-top:4px;display:flex}[data-duowenwen] .dw-acct-table{border-collapse:collapse;width:100%;margin-top:10px;font-size:14px}[data-duowenwen] .dw-acct-table th{border-bottom:1px solid var(--line);color:var(--muted);text-align:left;padding:8px 4px;font-weight:500}[data-duowenwen] .dw-acct-table th:last-child,[data-duowenwen] .dw-acct-table td:last-child{text-align:right;font-variant-numeric:tabular-nums}[data-duowenwen] .dw-acct-table td{border-bottom:1px solid var(--line);color:var(--ink);padding:10px 4px}[data-duowenwen] .dw-acct-table td:first-child{color:var(--muted)}[data-duowenwen] .dw-acct-dot{vertical-align:middle;border-radius:50%;width:7px;height:7px;margin-right:8px;display:inline-block}[data-duowenwen] .dw-acct-dot.is-in{background:var(--accent-fill)}[data-duowenwen] .dw-acct-dot.is-out{background:var(--muted);opacity:.5}[data-duowenwen] .dw-switch{background:var(--line);cursor:pointer;border:0;border-radius:13px;width:44px;height:26px;padding:0;transition:background .15s;position:relative}[data-duowenwen] .dw-switch span{background:#fff;border-radius:50%;width:20px;height:20px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #00000040}[data-duowenwen] .dw-switch[aria-checked=true]{background:var(--accent-fill)}[data-duowenwen] .dw-switch[aria-checked=true] span{transform:translate(18px)}[data-duowenwen] .dw-switch:disabled{opacity:.5;cursor:not-allowed}[data-duowenwen] .dw-seg{background:var(--wash);border-radius:10px;padding:3px;display:inline-flex}[data-duowenwen] .dw-seg button{min-height:30px;color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:8px;padding:0 12px;font-size:14px}[data-duowenwen] .dw-seg button[aria-pressed=true]{background:var(--glass-solid);color:var(--ink);font-weight:600;box-shadow:0 1px 3px #0f172a1f}@media (max-width:767px){[data-duowenwen] .dw-acct-page{padding:8px 10px 32px}[data-duowenwen] .dw-acct{border-radius:20px;grid-template-columns:1fr;min-height:0}[data-duowenwen] .dw-acct-nav{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;gap:4px;padding:8px;overflow-x:auto}[data-duowenwen] .dw-acct-nav-h{display:none}[data-duowenwen] .dw-acct-nav a{min-height:34px;font-size:14px}[data-duowenwen] .dw-acct-main{padding:18px 16px 22px}[data-duowenwen] .dw-acct-close{top:10px;right:8px}[data-duowenwen] .dw-acct-lead{font-size:18px}}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-switch,[data-duowenwen] .dw-switch span{transition:none}}@media (max-width:1360px){[data-duowenwen] .dw-brand-tag{display:none}}[data-duowenwen] .dw-screen .dw-example-eyebrow{display:none}[data-duowenwen] .dw-md-table{border:1px solid var(--line);border-radius:12px;max-width:100%;margin:10px 0;overflow-x:auto}[data-duowenwen] .dw-md-table table{border-collapse:collapse;width:100%;font-size:.94em;line-height:1.55}[data-duowenwen] .dw-md-table th,[data-duowenwen] .dw-md-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;white-space:nowrap;padding:8px 12px}[data-duowenwen] .dw-md-table td{white-space:normal;min-width:4em}[data-duowenwen] .dw-md-table th{background:var(--accent-soft);font-weight:600}[data-duowenwen] .dw-md-table tr:last-child td{border-bottom:0}[data-duowenwen] .dw-md-list>li+li{margin-top:.6em}[data-duowenwen] .dw-md-list .dw-md-list{margin-top:.5em}@media (max-width:767px){[data-duowenwen] .dw-md-list{padding-left:1.15em}[data-duowenwen] .dw-md-list .dw-md-list{padding-left:.9em}}[data-duowenwen] .dw-math-glue{white-space:nowrap}[data-duowenwen] .dw-math-glue>.katex>.katex-html{white-space:normal}[data-duowenwen] .dw-share-sheet{flex-direction:column;max-height:92dvh;display:flex}[data-duowenwen] .dw-share-sheet-head{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}[data-duowenwen] .dw-share-sheet-title{color:var(--ink);font-size:17px;font-weight:650}[data-duowenwen] .dw-share-sheet-close{border-radius:var(--r-chip);min-height:40px;color:var(--muted);cursor:pointer;background:0 0;border:0;padding:0 12px;font-size:15px}[data-duowenwen] .dw-share-sheet-toggles{flex-direction:column;gap:6px;margin-bottom:12px;display:flex}[data-duowenwen] .dw-share-toggle{color:var(--ink);cursor:pointer;align-items:flex-start;gap:10px;font-size:15px;line-height:1.5;display:flex}[data-duowenwen] .dw-share-toggle input{width:18px;height:18px;accent-color:var(--accent-fill);margin-top:2px}[data-duowenwen] .dw-share-toggle small{color:var(--muted);font-size:12px;display:block}[data-duowenwen] .dw-share-preview{background:var(--wash);-webkit-overflow-scrolling:touch;border-radius:18px;flex:auto;min-height:220px;overflow-y:auto}[data-duowenwen] .dw-share-image{-webkit-touch-callout:default;-webkit-user-select:auto;user-select:auto;width:100%;height:auto;display:block}[data-duowenwen] .dw-share-status{text-align:center;min-height:220px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:24px;font-size:15px;display:flex}[data-duowenwen] .dw-share-spinner{border:2.5px solid var(--line);border-top-color:var(--accent-fill);border-radius:50%;width:22px;height:22px;animation:.8s linear infinite dw-share-spin}@keyframes dw-share-spin{to{transform:rotate(360deg)}}[data-duowenwen] .dw-share-retry,[data-duowenwen] .dw-share-save{border-radius:var(--r-chip);background:var(--accent-fill);min-height:48px;color:var(--on-brand);cursor:pointer;border:0;font-size:16px;font-weight:600}[data-duowenwen] .dw-share-retry{min-height:40px;padding:0 20px}[data-duowenwen] .dw-share-save{width:100%;margin-top:12px}[data-duowenwen] .dw-share-save:active{background:var(--accent-fill-press)}[data-duowenwen] .dw-share-longpress{background:var(--accent-soft);text-align:center;color:var(--ink);border-radius:14px;margin-top:12px;padding:12px;font-size:15px;font-weight:600}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-share-spinner{animation-duration:2s}}[data-duowenwen] .dw-homework-body:lang(zh) em{color:color-mix(in srgb, var(--ink) 74%, var(--accent));font-style:normal}[data-duowenwen]{--dw-rail-top:52px}[data-duowenwen] .dw-q{flex-direction:column;min-width:0;display:flex}[data-duowenwen] .dw-q-rail{top:var(--dw-rail-top);z-index:20;margin:0 -6px 14px;padding:6px 0 8px;position:sticky}[data-duowenwen] .dw-q-rail:before{content:"";z-index:-1;top:calc(-1 * var(--dw-rail-top));background:color-mix(in srgb, var(--bg) 82%, transparent);-webkit-backdrop-filter:blur(18px)saturate(160%);backdrop-filter:blur(18px)saturate(160%);opacity:0;pointer-events:none;transition:opacity .18s;position:absolute;bottom:-14px;left:-10px;right:-10px;-webkit-mask-image:linear-gradient(#000 calc(100% - 22px),#0000);mask-image:linear-gradient(#000 calc(100% - 22px),#0000)}[data-duowenwen] .dw-q-rail[data-stuck]:before{opacity:1}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-q-rail:before{transition:none}}[data-duowenwen] .dw-q-rail-strip{scrollbar-width:none;border-radius:var(--r-chip);background:var(--glass-strong);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 1px var(--edge-line), 0 8px 24px #0f172a14;gap:4px;padding:4px;display:flex;overflow-x:auto}[data-duowenwen] .dw-q-rail-strip::-webkit-scrollbar{display:none}[data-duowenwen] .dw-q-chip{border-radius:var(--r-chip);height:32px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;cursor:pointer;background:0 0;border:0;flex:none;align-items:center;gap:5px;padding:0 12px;font-size:14px;font-weight:600;transition:background .18s,color .18s,box-shadow .18s;display:inline-flex;position:relative}[data-duowenwen] .dw-q-chip[aria-current=true]{background:var(--accent-fill);color:#fff;box-shadow:0 4px 14px #3352e847}[data-duowenwen] .dw-q-chip-other{font-weight:500}[data-duowenwen] .dw-q-chip-other:before{content:"";background:var(--line);width:1px;height:14px;margin-right:8px}[data-duowenwen] .dw-q-chip-dot{background:#d97706;border-radius:50%;width:6px;height:6px}[data-duowenwen] .dw-q-chip[aria-current=true] .dw-q-chip-dot{background:#fcd34d}[data-duowenwen] .dw-q-chip-demo{opacity:.75;display:inline-flex}[data-duowenwen] .dw-q-chip-count{background:var(--accent-soft);min-width:17px;height:17px;color:var(--accent);text-align:center;border-radius:9px;padding:0 4px;font-size:11px;line-height:17px}[data-duowenwen] .dw-q-chip[aria-current=true] .dw-q-chip-count{color:#fff;background:#ffffff3d}[data-duowenwen] .dw-q-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}[data-duowenwen] .dw-q-card{scroll-margin-top:calc(var(--dw-rail-top) + 58px);background:var(--glass-solid);box-shadow:inset 0 1px 0 var(--sheen), 0 0 0 1px var(--edge-line), 0 6px 22px #0f172a0d;border-radius:22px}[data-duowenwen] .dw-q-head{width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:flex-start;gap:12px;padding:14px;display:flex}[data-duowenwen] .dw-q-badge{background:var(--accent-soft);min-width:58px;height:40px;color:var(--accent);letter-spacing:-.01em;font-variant-numeric:tabular-nums;border-radius:13px;flex:none;justify-content:center;align-items:baseline;gap:1px;padding:0 9px;font-size:24px;font-weight:700;line-height:40px;display:inline-flex;position:relative}[data-duowenwen] .dw-q-badge small{letter-spacing:0;font-size:12px;font-weight:600}[data-duowenwen] .dw-q-card[data-open] .dw-q-badge{background:var(--accent-fill);color:#fff}[data-duowenwen] .dw-q-badge[data-unsure]:after{content:"";border:2px solid var(--glass-solid);background:#d97706;border-radius:50%;width:9px;height:9px;position:absolute;top:-2px;right:-2px}[data-duowenwen] .dw-q-head-text{flex-direction:column;flex:1;gap:3px;min-width:0;padding-top:1px;display:flex}[data-duowenwen] .dw-homework-body.dw-q-excerpt{color:var(--ink);font-size:15px;font-weight:600;line-height:1.55}[data-duowenwen] .dw-homework-body.dw-q-excerpt p,[data-duowenwen] .dw-homework-body.dw-q-summary-text p{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden;margin:0!important}[data-duowenwen] .dw-homework-body.dw-q-summary-text p{-webkit-line-clamp:1}[data-duowenwen] .dw-homework-body.dw-q-excerpt .katex-display,[data-duowenwen] .dw-homework-body.dw-q-summary-text .katex-display{margin:0;display:inline;padding:0!important}[data-duowenwen] .dw-q-unsure{color:#b45309;font-size:12px}[data-duowenwen] .dw-q-summary{min-width:0;color:var(--muted);align-items:baseline;gap:8px;font-size:13px;display:flex}[data-duowenwen] .dw-q-summary-label{background:var(--wash);color:var(--accent);border-radius:6px;flex:none;padding:0 7px;font-size:11px;font-weight:650;line-height:19px}[data-duowenwen] .dw-homework-body.dw-q-summary-text{min-width:0;color:var(--muted);flex:1;line-height:1.6;font-size:13px!important}[data-duowenwen] .dw-q-meta{flex:none;align-items:center;gap:10px;height:40px;padding-right:4px;display:flex}[data-duowenwen] .dw-q-meta-count{background:var(--accent-soft);min-width:20px;height:20px;color:var(--accent);text-align:center;border-radius:10px;padding:0 6px;font-size:12px;font-weight:650;line-height:20px}[data-duowenwen] .dw-q-head .dw-rec-chevron{margin-left:0;transform:rotate(45deg)}[data-duowenwen] .dw-q-card[data-open] .dw-q-head .dw-rec-chevron{transform:rotate(-135deg)}[data-duowenwen] .dw-q-collapse{grid-template-rows:0fr;transition:grid-template-rows .28s cubic-bezier(.2,.7,.2,1);display:grid}[data-duowenwen] .dw-q-card[data-open]>.dw-q-collapse{grid-template-rows:1fr}[data-duowenwen] .dw-q-collapse>.dw-q-body{opacity:0;min-height:0;padding:0 16px;transition:opacity .2s,padding .28s;overflow:hidden}[data-duowenwen] .dw-q-card[data-open]>.dw-q-collapse>.dw-q-body{opacity:1;padding:2px 16px 16px}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-q-collapse,[data-duowenwen] .dw-q-collapse>.dw-q-body,[data-duowenwen] .dw-q-chip{transition:none}}[data-duowenwen] .dw-q-section-next{border-top:1px solid var(--line);margin-top:18px;padding-top:16px}[data-duowenwen] .dw-homework-body.dw-q-transcript{background:var(--wash);border-radius:14px;padding:10px 12px;font-size:14px;line-height:1.7}[data-duowenwen] .dw-homework-body.dw-q-transcript>:first-child{margin-top:0}[data-duowenwen] .dw-homework-body.dw-q-transcript>:last-child{margin-bottom:0}[data-duowenwen] .dw-rec-note.dw-q-note{margin:0 0 8px}[data-duowenwen] .dw-q-demos .dw-visual{border-top:0;margin:0;padding-top:0}[data-duowenwen] .dw-q-demos .dw-visual+.dw-visual{margin-top:12px}[data-duowenwen] .dw-q-thread{border-top:1px dashed var(--line);flex-direction:column;gap:14px;margin-top:18px;padding-top:16px;scroll-margin-bottom:180px;display:flex}[data-duowenwen] .dw-q-turn{flex-direction:column;gap:8px;display:flex}[data-duowenwen] .dw-q-ask{flex-direction:column;align-items:flex-end;gap:2px;display:flex}[data-duowenwen] .dw-q-ask .dw-chat-bubble{border-radius:18px 18px 5px;max-width:88%;margin:0;padding:8px 14px;font-size:14px}[data-duowenwen] .dw-q-edit{color:var(--muted);cursor:pointer;background:0 0;border:0;font-size:12px}[data-duowenwen] .dw-q-foot{padding:0 14px 14px;display:flex}[data-duowenwen] .dw-q-ask-btn{border-radius:var(--r-chip);background:var(--accent-soft);height:36px;color:var(--accent);cursor:pointer;border:0;align-self:flex-start;align-items:center;gap:6px;padding:0 14px 0 12px;font-size:14px;font-weight:600;display:inline-flex}[data-duowenwen] .dw-q-ask-btn[data-on]{background:var(--accent-fill);color:#fff}[data-duowenwen] .dw-q-ask-btn:disabled{opacity:.5;cursor:default}[data-duowenwen] .dw-q-other{box-shadow:none;border:1.5px dashed var(--line);background:0 0;margin-top:12px;padding:14px 16px 16px}[data-duowenwen] .dw-q-other-head{flex-wrap:wrap;align-items:baseline;gap:4px 8px;margin:0 0 10px;display:flex}[data-duowenwen] .dw-q-other .dw-q-section+.dw-q-section{margin-top:16px}[data-duowenwen] .dw-chat-pointer{align-self:flex-end;max-width:92%;list-style:none}[data-duowenwen] .dw-chat-pointer button{border-radius:var(--r-chip);background:var(--wash);max-width:100%;height:34px;color:var(--ink);cursor:pointer;border:0;align-items:center;gap:8px;padding:0 6px 0 12px;font-size:13px;display:flex}[data-duowenwen] .dw-chat-pointer-mark{background:var(--accent);border-radius:50%;flex:none;width:7px;height:7px}[data-duowenwen] .dw-chat-pointer-mark[data-pending]{animation:1.6s ease-in-out infinite dw-chat-breathe}[data-duowenwen] .dw-chat-pointer-label{flex:none;font-weight:600}[data-duowenwen] .dw-chat-pointer-ask{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--muted);overflow:hidden}[data-duowenwen] .dw-chat-pointer-go{border-radius:var(--r-chip);background:var(--glass-solid);color:var(--accent);flex:none;padding:0 10px;font-weight:600;line-height:24px}[data-duowenwen] .dw-chat-pinned-q{background:var(--accent-fill);color:#fff;font-weight:600}[data-duowenwen] .dw-chat-pinned-q button{color:#ffffffd9}[data-duowenwen] .dw-q-excerpt .katex,[data-duowenwen] .dw-q-summary-text .katex{white-space:nowrap}@media (min-width:768px){[data-duowenwen]{--dw-rail-top:90px}[data-duowenwen] .dw-q-rail{margin:0 0 16px}[data-duowenwen] .dw-q-rail:before{-webkit-mask-composite:source-in;left:-48px;right:-48px;-webkit-mask-image:linear-gradient(#000 calc(100% - 22px),#0000),linear-gradient(90deg,#0000,#000 48px calc(100% - 48px),#0000);mask-image:linear-gradient(#000 calc(100% - 22px),#0000),linear-gradient(90deg,#0000,#000 48px calc(100% - 48px),#0000);-webkit-mask-composite:source-in;mask-composite:intersect}[data-duowenwen] .dw-q-rail-strip{width:fit-content;max-width:100%}[data-duowenwen] .dw-q-head{padding:16px 18px}[data-duowenwen] .dw-q-collapse>.dw-q-body,[data-duowenwen] .dw-q-card[data-open]>.dw-q-collapse>.dw-q-body{padding-left:88px;padding-right:22px}}[data-duowenwen] .ep.dw-ep{--ep-page:transparent;--ep-card:var(--glass-solid);--ep-text:var(--muted);--ep-strong:var(--ink);--ep-muted:var(--muted);--ep-hi:var(--ink);--ep-mid:color-mix(in srgb, var(--ink) 46%, var(--glass-solid));--ep-lo:color-mix(in srgb, var(--ink) 20%, var(--glass-solid));--ep-faint:color-mix(in srgb, var(--ink) 10%, var(--glass-solid));--ep-minor:color-mix(in srgb, var(--ink) 5%, var(--glass-solid));--ep-lit:var(--accent);--ep-point:var(--ink);--ep-track:color-mix(in srgb, var(--ink) 14%, var(--glass-solid));color-scheme:normal;color:var(--ink);background:0 0;font-family:inherit;font-size:15px;line-height:1.6}[data-duowenwen] .ep.dw-ep .ep-stage{background:var(--glass-solid);box-shadow:0 0 0 1px var(--edge-line), 0 1px 0 var(--edge-hi) inset;border-radius:18px;padding:10px}[data-duowenwen] .ep.dw-ep .ep-stage:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[data-duowenwen] .ep.dw-ep .ep-meta{letter-spacing:0;margin-top:8px;padding:0 4px;font-family:inherit;font-size:13px}[data-duowenwen] .ep.dw-ep .ep-steps,[data-duowenwen] .ep.dw-ep .ep-controls{border-top-color:var(--line)}[data-duowenwen] .ep.dw-ep button{border-radius:var(--r-chip);border-color:var(--line);background:var(--glass-solid);min-height:44px;color:var(--ink);padding:0 16px;font-size:14px}[data-duowenwen] .ep.dw-ep button:hover{border-color:color-mix(in srgb, var(--accent) 45%, var(--line))}[data-duowenwen] .ep.dw-ep button[data-act=play]{min-width:5.5em}[data-duowenwen] .ep.dw-ep .ep-stepno{font-variant-numeric:tabular-nums;font-family:inherit}[data-duowenwen] .ep.dw-ep .ep-caption{color:var(--ink);font-size:16px;line-height:1.7}[data-duowenwen] .ep.dw-ep input[type=range]::-webkit-slider-thumb{border-color:var(--accent)}[data-duowenwen] .ep.dw-ep input[type=range]::-moz-range-thumb{border-color:var(--accent)}[data-duowenwen] .ep.dw-ep .ep-slider output,[data-duowenwen] .ep.dw-ep .ep-readouts b{font-family:inherit;font-weight:600}[data-duowenwen] .ep.dw-ep .ep-svg{max-width:560px;margin-inline:auto}[data-duowenwen] .ep.dw-ep .ep-slider-long{grid-template-columns:1fr auto;row-gap:0;padding-top:6px}[data-duowenwen] .ep.dw-ep .ep-slider-long .ep-name{color:var(--muted);text-align:left;grid-column:1/-1;font-family:inherit;font-size:14px;font-style:normal;line-height:1.5}[data-duowenwen] .dw-chat-dock{bottom:var(--dw-kb,0px)}html[data-dw-kb] [data-duowenwen] .dw-chat-dock{padding-bottom:6px}[data-duowenwen] .dw-chat-end{height:calc(84px + env(safe-area-inset-bottom) + var(--dw-kb,0px))}[data-duowenwen] .dw-chat-elapsed,[data-duowenwen] .dw-chat-took{font-variant-numeric:tabular-nums;color:var(--muted)}[data-duowenwen] .dw-chat-took{opacity:.85;padding-inline:6px;font-size:12px}[data-duowenwen] .dw-q-turn>.dw-chat-took{margin-top:4px;padding-inline:0}[data-duowenwen] .dw-stream{text-align:left;flex-direction:column;align-self:stretch;gap:10px;min-width:0;display:flex}[data-duowenwen] .dw-stream-thought{border:1px solid var(--edge-line);border-radius:var(--r-control);background:var(--glass);-webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));color:var(--muted);font-size:13px;line-height:1.6;overflow:hidden}[data-duowenwen] .dw-stream-thought-head{width:100%;min-height:36px;color:var(--muted);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;padding:6px 12px;font-weight:500;display:flex}[data-duowenwen] .dw-stream-thought-mark{animation:1.6s ease-in-out infinite dw-chat-breathe;display:inline-flex}[data-duowenwen] .dw-stream-thought-toggle{color:var(--accent);margin-left:auto;font-size:12px}[data-duowenwen] .dw-stream-thought-body{white-space:pre-wrap;overflow-wrap:anywhere;max-height:4.8em;padding:0 12px 10px;overflow:hidden;-webkit-mask-image:linear-gradient(#0000 0,#000 1.4em);mask-image:linear-gradient(#0000 0,#000 1.4em)}[data-duowenwen] .dw-stream-thought[data-open] .dw-stream-thought-body{max-height:min(50vh,420px);overflow-y:auto;-webkit-mask-image:none;mask-image:none}[data-duowenwen] .dw-stream-answer{color:var(--ink);font-size:16px;line-height:1.8}[data-duowenwen] .dw-stream-label{letter-spacing:.04em;color:var(--muted);margin-top:6px;font-size:12px;font-weight:600}[data-duowenwen] .dw-stream-tail{white-space:pre-wrap;overflow-wrap:anywhere;margin:.5rem 0;font-size:15px;line-height:1.75}[data-duowenwen] .dw-stream-caret{vertical-align:-.12em;background:var(--accent-soft);border-radius:2px;width:.5em;height:1em;margin-left:2px;animation:1.1s ease-in-out infinite dw-chat-breathe;display:inline-block}[data-duowenwen] .dw-stream-note{color:var(--muted);font-size:12px}[data-duowenwen] .dw-stream-after{gap:6px}[data-duowenwen] .dw-stream-show{min-height:32px;color:var(--muted);text-decoration:underline;-webkit-text-decoration-color:var(--line);text-decoration-color:var(--line);text-underline-offset:3px;cursor:pointer;background:0 0;border:0;align-self:flex-start;padding:0 2px;font-size:13px}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-stream-thought-mark,[data-duowenwen] .dw-stream-caret{animation:none}}[data-duowenwen] .dw-stream-thought-title{color:var(--ink);opacity:.8;font-weight:600}[data-duowenwen] .dw-homework-body code.dw-tex-raw{background:var(--accent-soft);color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:4px;padding:0 3px;font-size:.88em}[data-duowenwen] .dw-nav-compact:before{content:"";z-index:-1;top:calc(-60px - env(safe-area-inset-top));background:linear-gradient(to top, color-mix(in srgb, var(--bg) 92%, transparent) 30%, var(--bg) 60%);-webkit-backdrop-filter:blur(18px)saturate(160%);backdrop-filter:blur(18px)saturate(160%);pointer-events:none;transition:opacity .18s;position:absolute;bottom:-18px;left:0;right:0;-webkit-mask-image:linear-gradient(#000 calc(100% - 22px),#0000);mask-image:linear-gradient(#000 calc(100% - 22px),#0000)}[data-duowenwen]:has(.dw-q-rail[data-stuck]) .dw-nav-compact:before{opacity:0}[data-duowenwen] .dw-chat-dock{background:0 0}[data-duowenwen] .dw-chat-dock:before{content:"";z-index:-1;top:-10px;bottom:calc(-40px - var(--dw-kb,0px));background:linear-gradient(to bottom, color-mix(in srgb, var(--bg) 92%, transparent) 25%, var(--bg) 55%);-webkit-backdrop-filter:blur(18px)saturate(160%);backdrop-filter:blur(18px)saturate(160%);pointer-events:none;position:absolute;left:0;right:0;-webkit-mask-image:linear-gradient(0deg,#000 calc(100% - 26px),#0000);mask-image:linear-gradient(0deg,#000 calc(100% - 26px),#0000)}@media (prefers-reduced-transparency:reduce){[data-duowenwen] .dw-nav-compact:before,[data-duowenwen] .dw-chat-dock:before{background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none}}@media (prefers-reduced-motion:reduce){[data-duowenwen] .dw-nav-compact:before{transition:none}}[data-duowenwen] .dw-mode{position:relative}[data-duowenwen] .dw-mode-button{border-radius:var(--r-chip);background:var(--accent-soft);min-height:32px;color:var(--accent);cursor:pointer;border:0;align-items:center;gap:6px;padding:0 12px;font-size:14px;font-weight:600;display:inline-flex}[data-duowenwen] .dw-mode-button:disabled{opacity:.6;cursor:default}[data-duowenwen] .dw-mode-menu{z-index:40;background:var(--glass-solid);width:min(320px,100vw - 48px);box-shadow:0 0 0 1px var(--edge-line), 0 12px 32px #0f172a38;border-radius:18px;padding:6px;position:absolute;bottom:calc(100% + 8px);left:0}[data-duowenwen] .dw-mode-menu button{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:12px;grid-template-columns:1fr auto;gap:2px 12px;padding:10px 12px;display:grid}[data-duowenwen] .dw-mode-menu button:hover,[data-duowenwen] .dw-mode-menu button[aria-selected=true]{background:var(--wash)}[data-duowenwen] .dw-mode-name{font-size:15px;font-weight:600}[data-duowenwen] .dw-mode-menu button[aria-selected=true] .dw-mode-name{color:var(--accent)}[data-duowenwen] .dw-mode-cost{color:var(--muted);align-self:center;font-size:13px}[data-duowenwen] .dw-mode-hint{color:var(--muted);grid-column:1/-1;font-size:13px}[data-duowenwen] .dw-mode-default{border-top:1px solid var(--edge-line);margin-top:4px;padding:8px 12px 6px}[data-duowenwen] .dw-mode-default label{min-height:32px;color:var(--ink);cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}[data-duowenwen] .dw-mode-default input{width:16px;height:16px;accent-color:var(--accent)}[data-duowenwen] .dw-chat-composer-opts{padding:6px 4px 0;display:flex}[data-duowenwen] .ns{--ns-mark:#b5730c;--ns-mark-soft:#b5730c24;--ns-ok:#1f7a4d;width:100%;min-width:0;color:var(--ink);flex-direction:column;gap:12px;scroll-margin-top:80px;display:flex}[data-duowenwen][data-theme=night] .ns{--ns-mark:#f2bf4e;--ns-mark-soft:#f2bf4e29;--ns-ok:#5fd39a}@media (prefers-color-scheme:dark){[data-duowenwen]:not([data-theme]) .ns{--ns-mark:#f2bf4e;--ns-mark-soft:#f2bf4e29;--ns-ok:#5fd39a}}[data-duowenwen] .ns p{margin:0}[data-duowenwen] .ns .ns-kicker{letter-spacing:.08em;color:var(--muted);font-size:12px}[data-duowenwen] .ns .ns-kicker span{color:var(--accent)}[data-duowenwen] .ns .ns-formula{overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px}[data-duowenwen] .ns .ns-start{flex-wrap:wrap;align-items:flex-end;gap:10px;display:flex}[data-duowenwen] .ns .ns-start label{color:var(--muted);flex-direction:column;flex:150px;gap:4px;min-width:0;font-size:12px;display:flex}[data-duowenwen] .ns .ns-start input{border-radius:var(--r-control);border:1px solid var(--line);background:var(--glass-solid);width:100%;min-width:0;height:40px;color:var(--ink);font:inherit;font-variant-numeric:tabular-nums;padding:0 10px;font-size:15px}[data-duowenwen] .ns .ns-chip,[data-duowenwen] .ns .ns-nav button{border-radius:var(--r-control);border:1px solid var(--line);height:40px;color:var(--ink);font:inherit;cursor:pointer;background:0 0;padding:0 14px;font-size:15px;font-weight:600}[data-duowenwen] .ns .ns-seg{flex-wrap:wrap;align-items:center;gap:6px;display:flex}[data-duowenwen] .ns .ns-seg-lab{color:var(--muted);margin-right:4px;font-size:13px}[data-duowenwen] .ns .ns-seg button{border:1px solid var(--line);height:36px;color:var(--muted);font:inherit;cursor:pointer;background:0 0;border-radius:999px;padding:0 12px;font-size:14px;font-weight:600}[data-duowenwen] .ns .ns-seg button.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}[data-duowenwen] .ns .ns-note{color:var(--muted);font-size:13px;line-height:1.6}[data-duowenwen] .ns .ns-panel{background:var(--glass-solid);box-shadow:0 0 0 1px var(--line);border-radius:18px;flex-direction:column;gap:8px;min-width:0;padding:12px;display:flex}[data-duowenwen] .ns .ns-panel-top{justify-content:space-between;gap:8px;font-size:14px;display:flex}[data-duowenwen] .ns .ns-panel-top span{color:var(--muted);font-variant-numeric:tabular-nums}[data-duowenwen] .ns .ns-bits{grid-template-columns:repeat(48,minmax(0,1fr));gap:1px;display:grid}[data-duowenwen] .ns .ns-bit{text-align:center;border-radius:3px;min-width:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-style:normal;line-height:22px}[data-duowenwen] .ns .ns-keep{background:var(--accent-soft);color:var(--accent);font-weight:700}[data-duowenwen] .ns .ns-drop{background:var(--wash,#0b10200d);color:var(--muted)}[data-duowenwen] .ns .ns-hidden{color:var(--faint);box-shadow:inset 0 0 0 1px var(--line);background:0 0}[data-duowenwen] .ns .ns-hex,[data-duowenwen] .ns .ns-out,[data-duowenwen] .ns .ns-words,[data-duowenwen] .ns .ns-check{font-variant-numeric:tabular-nums;overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}[data-duowenwen] .ns .ns-out b{color:var(--accent)}[data-duowenwen] .ns .ns-legend{color:var(--muted);flex-wrap:wrap;gap:4px 14px;margin:0;padding:0;font-size:12px;list-style:none;display:flex}[data-duowenwen] .ns .ns-legend li{align-items:center;gap:6px;display:flex}[data-duowenwen] .ns .ns-legend i{border-radius:3px;width:12px;height:12px;display:inline-block}[data-duowenwen] .ns .ns-srand{background:var(--ns-mark-soft);color:var(--ink);border-radius:10px;padding:6px 10px;font-size:13px;line-height:1.6}[data-duowenwen] .ns .ns-sub{color:var(--muted);font-size:12px}[data-duowenwen] .ns .ns-words{grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;display:grid}[data-duowenwen] .ns .ns-word{text-align:center;box-shadow:0 0 0 1px var(--line);letter-spacing:.02em;border-radius:8px;min-width:0;padding:6px 0}[data-duowenwen] .ns .ns-word.ns-empty{color:var(--faint)}[data-duowenwen] .ns .ns-word i{border-radius:3px;padding:0 1px;font-style:normal;font-weight:700}[data-duowenwen] .ns .ns-word .ns-top0{background:var(--ns-mark);color:var(--bg)}[data-duowenwen] .ns .ns-word .ns-top1{box-shadow:inset 0 -2px 0 var(--line)}[data-duowenwen] .ns .ns-check{color:var(--muted)}[data-duowenwen] .ns .ns-check.ns-ok b{color:var(--ns-ok)}[data-duowenwen] .ns .ns-check.ns-bad b{color:var(--ns-mark)}[data-duowenwen] .ns .ns-nav{flex-wrap:wrap;gap:8px;display:flex}[data-duowenwen] .ns .ns-nav button{flex:auto;height:44px}[data-duowenwen] .ns .ns-nav button.ns-go{background:var(--ink);color:var(--bg);border-color:var(--ink)}[data-duowenwen] .ns .ns-nav button:disabled{opacity:.35;cursor:default}@media (max-width:560px){[data-duowenwen] .ns .ns-bits{grid-template-columns:repeat(24,minmax(0,1fr))}[data-duowenwen] .ns .ns-words{grid-template-columns:repeat(3,minmax(0,1fr))}}[data-duowenwen] .ns-tl{flex-direction:column;gap:12px;min-width:0;margin:0;display:flex}[data-duowenwen] .ns-tl svg{width:100%;height:auto;display:block}[data-duowenwen] .ns-tl .ns-tl-axis{stroke:var(--line);stroke-width:2px}[data-duowenwen] .ns-tl .ns-tl-tick{stroke:var(--faint);stroke-width:1px}[data-duowenwen] .ns-tl .ns-tl-text{fill:var(--muted);font-size:17px}[data-duowenwen] .ns-tl .ns-tl-num{fill:var(--ink);font-size:18px;font-weight:700}[data-duowenwen] .ns-tl .ns-tl-dot{fill:var(--accent);fill-opacity:.85}[data-duowenwen] .ns-tl .ns-tl-dot.ns-tl-bin{fill:var(--faint)}[data-duowenwen] .ns-tl-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}[data-duowenwen] .ns-tl-list li{align-items:flex-start;gap:10px;min-width:0;display:flex}[data-duowenwen] .ns-tl-badge{background:var(--accent);color:#fff;border-radius:12px;flex:none;place-items:center;width:24px;height:24px;font-size:12px;font-weight:700;display:grid}[data-duowenwen] .ns-tl-badge.ns-tl-bin{background:var(--faint)}[data-duowenwen] .ns-tl-list p{margin:0}[data-duowenwen] .ns-tl-when{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px}[data-duowenwen] .ns-tl-curves{flex-wrap:wrap;gap:6px;display:flex;margin-top:4px!important}[data-duowenwen] .ns-tl-curves button,[data-duowenwen] .ns-tl-curves span{border:1px solid var(--line);height:32px;color:var(--ink);font:inherit;background:0 0;border-radius:999px;align-items:center;gap:4px;padding:0 10px;font-size:13px;display:inline-flex}[data-duowenwen] .ns-tl-curves button{cursor:pointer;border-color:var(--accent)}[data-duowenwen] .ns-tl-curves span{color:var(--muted)}[data-duowenwen] .ns-tl-curves b{font-variant-numeric:tabular-nums;font-weight:600}[data-duowenwen] .dw-ns-terms{flex-direction:column;gap:10px;margin:12px 0 0;display:flex}[data-duowenwen] .dw-ns-terms dt{color:var(--ink);font-size:15px;font-weight:650}[data-duowenwen] .dw-ns-terms dd{color:var(--muted);margin:2px 0 0;font-size:15px;line-height:1.7}[data-duowenwen] .dw-ns-steps{color:var(--muted);flex-direction:column;gap:12px;margin:20px 0 0;padding-left:1.4em;font-size:15px;line-height:1.7;display:flex}[data-duowenwen] .dw-ns-steps b{color:var(--ink);font-weight:650;display:block}[data-duowenwen] .dw-ns-tl-card{padding:16px}[data-duowenwen] .rt{--rt-band:#1f7a4d38;--rt-band-ink:#1f7a4d;--rt-warn:#b5730c;width:100%;min-width:0;color:var(--ink);flex-direction:column;gap:20px;display:flex}[data-duowenwen][data-theme=night] .rt{--rt-band:#5fd39a38;--rt-band-ink:#5fd39a;--rt-warn:#f2bf4e}@media (prefers-color-scheme:dark){[data-duowenwen]:not([data-theme]) .rt{--rt-band:#5fd39a38;--rt-band-ink:#5fd39a;--rt-warn:#f2bf4e}}[data-duowenwen] .rt p{margin:0}[data-duowenwen] .rt .rt-panel{flex-direction:column;gap:12px;min-width:0;display:flex}[data-duowenwen] .rt .rt-panel+.rt-panel{border-top:1px solid var(--line);padding-top:20px}[data-duowenwen] .rt .rt-kicker{color:var(--ink);margin:0;font-size:15px;font-weight:650}[data-duowenwen] .rt .rt-seg{border-radius:var(--r-control);background:var(--wash);gap:3px;min-width:0;padding:3px;display:flex}[data-duowenwen] .rt .rt-seg-wrap{flex-wrap:wrap}[data-duowenwen] .rt .rt-seg button{min-width:0;min-height:38px;color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;border-radius:11px;flex:1 1 0;padding:4px 8px;font-size:13px;font-weight:650;line-height:1.25;transition:background .25s,color .25s}[data-duowenwen] .rt .rt-seg-wrap button{flex:140px}[data-duowenwen] .rt .rt-seg button.on{background:var(--glass-solid);color:var(--ink);box-shadow:0 1px 3px #0b10201f}[data-duowenwen] .rt .rt-sliders{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 18px;display:grid}@media (max-width:560px){[data-duowenwen] .rt .rt-sliders{grid-template-columns:minmax(0,1fr)}}[data-duowenwen] .rt .rt-slider{flex-direction:column;min-width:0;display:flex}[data-duowenwen] .rt .rt-slider label{color:var(--muted);justify-content:space-between;align-items:baseline;gap:8px;font-size:13px;display:flex}[data-duowenwen] .rt .rt-slider label b{color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:15px;font-weight:650}[data-duowenwen] .rt .rt-slider label small{color:var(--muted);font-size:12px;font-weight:500}[data-duowenwen] .rt input[type=range]{width:100%;min-width:0;height:32px;accent-color:var(--accent-fill);margin:0}[data-duowenwen] .rt .rt-range{color:var(--muted);font-variant-numeric:tabular-nums;justify-content:space-between;margin-top:-6px;font-size:11px;display:flex}[data-duowenwen] .rt .rt-outs{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0;display:grid}@media (max-width:420px){[data-duowenwen] .rt .rt-outs{grid-template-columns:minmax(0,1fr)}}[data-duowenwen] .rt .rt-out{background:var(--wash);border-radius:12px;min-width:0;padding:10px 12px}[data-duowenwen] .rt .rt-out dt{color:var(--muted);font-size:12px}[data-duowenwen] .rt .rt-out dd{font-variant-numeric:tabular-nums;margin:2px 0 0}[data-duowenwen] .rt .rt-out dd span{font-size:22px;font-weight:650;line-height:1.2}[data-duowenwen] .rt .rt-out dd small{color:var(--muted);font-size:12px}[data-duowenwen] .rt .rt-out dd em{color:var(--muted);font-size:12px;font-style:normal;display:block}[data-duowenwen] .rt .rt-out.rt-strong{box-shadow:inset 0 0 0 1.5px var(--accent)}[data-duowenwen] .rt .rt-out.rt-strong dd span{color:var(--accent)}[data-duowenwen] .rt .rt-bars{flex-direction:column;gap:8px;display:flex}[data-duowenwen] .rt .rt-bar{grid-template-columns:52px minmax(0,1fr) auto;align-items:center;gap:10px;font-size:13px;display:grid}[data-duowenwen] .rt .rt-bar-lab{color:var(--muted)}[data-duowenwen] .rt .rt-bar-val{font-variant-numeric:tabular-nums;color:var(--ink);text-align:right;min-width:76px}[data-duowenwen] .rt .rt-track{background:var(--wash);border-radius:7px;height:14px;position:relative;overflow:hidden}[data-duowenwen] .rt .rt-fill{border-radius:7px;transition:width .3s cubic-bezier(.2,.8,.2,1);position:absolute;inset:0 auto 0 0}[data-duowenwen] .rt .rt-fill-thrust{background:var(--accent-fill)}[data-duowenwen] .rt .rt-fill-weight{background:var(--muted)}[data-duowenwen] .rt .rt-verdict{font-size:15px;font-weight:650;line-height:1.5}[data-duowenwen] .rt .rt-verdict.rt-tire-ok,[data-duowenwen] .rt .rt-verdict.rt-tire-edge{color:var(--rt-band-ink)}[data-duowenwen] .rt .rt-verdict.rt-tire-no{color:var(--rt-warn)}[data-duowenwen] .rt .rt-note,[data-duowenwen] .rt .rt-gap{color:var(--muted);font-size:13px;line-height:1.6}[data-duowenwen] .rt .rt-gap{color:var(--ink)}[data-duowenwen] .rt .rt-big{flex-direction:column;gap:2px;display:flex}[data-duowenwen] .rt .rt-big-lab{color:var(--muted);font-size:12px}[data-duowenwen] .rt .rt-big-num{font-variant-numeric:tabular-nums;flex-wrap:wrap;align-items:baseline;gap:6px;display:flex}[data-duowenwen] .rt .rt-big-num b{font-size:34px;font-weight:650;line-height:1}[data-duowenwen] .rt .rt-big-num small{color:var(--muted);font-size:15px}[data-duowenwen] .rt .rt-big-alt{color:var(--muted);font-size:14px}[data-duowenwen] .rt .rt-gscale{padding-bottom:40px;position:relative}[data-duowenwen] .rt .rt-gtrack{background:var(--wash);border-radius:9px;height:18px;display:block;position:relative;overflow:hidden}[data-duowenwen] .rt .rt-gneed{border-radius:4px;transition:width .3s cubic-bezier(.2,.8,.2,1);position:absolute;inset:5px auto 5px 0}[data-duowenwen] .rt .rt-gneed-ok,[data-duowenwen] .rt .rt-gneed-edge{background:var(--rt-band-ink)}[data-duowenwen] .rt .rt-gneed-no{background:var(--rt-warn)}[data-duowenwen] .rt .rt-gband{background:var(--rt-band);box-shadow:inset 1px 0 0 var(--rt-band-ink), inset -1px 0 0 var(--rt-band-ink);position:absolute;top:0;bottom:0}[data-duowenwen] .rt .rt-gmark{background:var(--ink);width:2px;margin-left:-1px;transition:left .3s cubic-bezier(.2,.8,.2,1);position:absolute;top:0;bottom:0}[data-duowenwen] .rt .rt-gticks{height:16px;color:var(--muted);font-variant-numeric:tabular-nums;margin-top:4px;font-size:11px;display:block;position:relative}[data-duowenwen] .rt .rt-gticks span{white-space:nowrap;position:absolute;top:0;transform:translate(-50%)}[data-duowenwen] .rt .rt-gticks span:first-child{transform:none}[data-duowenwen] .rt .rt-gticks span:last-child{transform:translate(-100%)}[data-duowenwen] .rt .rt-gband-lab{color:var(--rt-band-ink);white-space:nowrap;font-size:11px;font-weight:650;position:absolute;top:40px;transform:translate(-20%)}[data-duowenwen] .dw-rt-steps{color:var(--muted);flex-direction:column;gap:8px;margin:12px 0 0;padding-left:1.4em;font-size:15px;line-height:1.7;display:flex}[data-duowenwen] .dw-rt-table-wrap{-webkit-overflow-scrolling:touch;margin-top:14px;overflow-x:auto}[data-duowenwen] .dw-rt-table{border-collapse:collapse;width:100%;min-width:520px;font-size:14px;line-height:1.5}[data-duowenwen] .dw-rt-table caption{caption-side:bottom;text-align:left;color:var(--muted);padding-top:8px;font-size:12px}[data-duowenwen] .dw-rt-table th,[data-duowenwen] .dw-rt-table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 10px}[data-duowenwen] .dw-rt-table thead th{color:var(--ink);font-weight:650}[data-duowenwen] .dw-rt-table tbody th{color:var(--ink);white-space:nowrap;font-weight:650}[data-duowenwen] .dw-rt-table td{color:var(--muted)}[data-duowenwen] .dw-section{border-top:1px solid var(--line);min-width:0;color:var(--muted);align-items:center;gap:10px;padding-top:12px;font-size:13px;display:flex}[data-duowenwen] .dw-section:first-child{border-top:0;padding-top:0}[data-duowenwen] .dw-section-title{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--ink);font-size:14px;font-weight:600;overflow:hidden}[data-duowenwen] .dw-section-date{flex:none}[data-duowenwen] .dw-section button{border-radius:var(--r-chip);border:1px solid var(--line);background:var(--glass-solid);min-height:32px;color:var(--accent);flex:none;margin-left:auto;padding:0 12px;font-size:13px}[data-duowenwen] .dw-section button:hover{background:var(--accent-soft)}[data-duowenwen] .dw-earlier-more{border-radius:var(--r-chip);border:1px solid var(--line);background:var(--glass-solid);min-height:36px;color:var(--accent);margin:8px auto 16px;padding:0 16px;font-size:13px;display:block}[data-duowenwen] .dw-earlier{opacity:.92;margin-bottom:28px}[data-duowenwen] .dw-earlier .dw-chat-thread{padding-top:16px}[data-duowenwen] .dw-earlier-now{color:var(--muted);align-items:center;gap:10px;margin:0 0 4px;font-size:13px;display:flex}[data-duowenwen] .dw-earlier-now:before,[data-duowenwen] .dw-earlier-now:after{content:"";border-top:1px solid var(--line);flex:1}[data-duowenwen] .dw-newq{border-radius:var(--r-chip);border:1px solid var(--line);background:var(--glass-solid);min-height:32px;color:var(--ink);align-items:center;gap:4px;padding:0 12px;font-size:13px;display:inline-flex}[data-duowenwen] .dw-newq:hover:not(:disabled){background:var(--accent-soft);color:var(--accent)}
[data-duowenwen] .dw-credit-chip{border-radius:var(--r-chip);min-height:44px;color:var(--ink);white-space:nowrap;align-items:center;gap:6px;padding:0 14px;font-size:14px;text-decoration:none;display:inline-flex}[data-duowenwen] .dw-credit-dot{background:var(--accent-fill);border-radius:50%;width:8px;height:8px}[data-duowenwen] .dw-credit-num{font-variant-numeric:tabular-nums;font-weight:650}[data-duowenwen] .dw-credit-unit{color:var(--muted);font-size:13px}[data-duowenwen] .dw-credit-panel{border-radius:var(--r-card);flex-direction:column;gap:12px;padding:22px 24px;line-height:1.6;display:flex}[data-duowenwen] .dw-credit-title{color:var(--ink);margin:0;font-size:18px;font-weight:650}[data-duowenwen] .dw-credit-body{color:var(--ink);margin:0;font-size:15px}[data-duowenwen] .dw-credit-hint{color:var(--muted);margin:0;font-size:13px}[data-duowenwen] .dw-credit-error{color:var(--ink);margin:0;font-size:14px}[data-duowenwen] .dw-credit-big{font-variant-numeric:tabular-nums;margin:0;font-size:44px;font-weight:650;line-height:1.1}[data-duowenwen] .dw-credit-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}[data-duowenwen] .dw-credit-link{color:var(--accent);font-size:14px;text-decoration:none}[data-duowenwen] .dw-credit-link:hover{text-decoration:underline}[data-duowenwen] .dw-credit-packs{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}[data-duowenwen] .dw-credit-packs li{border-radius:var(--r-control);background:var(--accent-soft);justify-content:space-between;align-items:center;gap:12px;padding:12px 12px 12px 16px;display:flex}[data-duowenwen] .dw-credit-packs li.is-popular{box-shadow:inset 0 0 0 1.5px var(--accent)}[data-duowenwen] .dw-credit-pack-name{color:var(--ink);margin:0;font-size:15px;font-weight:600}[data-duowenwen] .dw-credit-pack-name span{color:var(--muted);margin-left:6px;font-weight:400}[data-duowenwen] .dw-credit-pack-meta{color:var(--muted);margin:0;font-size:12px}[data-duowenwen] .dw-credit-pay{align-items:center;gap:20px;display:flex}[data-duowenwen] .dw-credit-pay>div{flex-direction:column;align-items:flex-start;gap:8px;display:flex}[data-duowenwen] .dw-credit-qr{border-radius:var(--r-control);background:#fff;flex:none;width:200px;height:200px;padding:8px}[data-duowenwen] .dw-credit-overlay{z-index:60;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#07090f73;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}[data-duowenwen] .dw-credit-dialog{width:100%;max-width:520px;max-height:calc(100dvh - 32px);overflow:auto}[data-duowenwen] .dw-receipt{flex-direction:column;gap:16px;display:flex}[data-duowenwen] .dw-credit-ledger{flex-direction:column;margin:0;padding:0;font-size:14px;list-style:none;display:flex}[data-duowenwen] .dw-credit-ledger li{border-top:1px solid var(--line);color:var(--muted);grid-template-columns:1fr auto 56px;gap:12px;padding:8px 0;display:grid}[data-duowenwen] .dw-credit-ledger li:first-child{border-top:0}[data-duowenwen] .dw-credit-delta{text-align:right;color:var(--ink);font-variant-numeric:tabular-nums}@media (max-width:640px){[data-duowenwen] .dw-credit-panel{padding:18px 16px}[data-duowenwen] .dw-credit-pay{flex-direction:column;align-items:stretch}[data-duowenwen] .dw-credit-pay>div{align-items:stretch}[data-duowenwen] .dw-credit-qr{align-self:center}[data-duowenwen] .dw-credit-packs li{flex-direction:column;align-items:stretch}[data-duowenwen] .dw-credit-unit{display:none}}[data-duowenwen] .dw-credit-input{border:1px solid var(--line,#00000024);min-width:0;min-height:44px;color:inherit;font:inherit;letter-spacing:.04em;background:0 0;border-radius:12px;flex:220px;padding:0 14px;font-size:15px}[data-duowenwen] .dw-credit-input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}[data-duowenwen] .dw-code{color:var(--ink);white-space:pre;background:#7f7f7f1f;border-radius:12px;margin:0;padding:14px 16px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.55;overflow-x:auto}[data-duowenwen] .dw-key-row{border-top:1px solid #7f7f7f33;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 16px;padding:10px 0;font-size:14px;display:flex}[data-duowenwen] .dw-key-new{word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}[data-duowenwen] .dw-credit-pay-btn{width:100%;margin-top:12px}[data-duowenwen] .dw-credit-switch{border-top:1px solid var(--line);flex-direction:column;gap:8px;margin-top:16px;padding-top:14px;display:flex}[data-duowenwen] .dw-credit-switch-item{border:1px solid var(--line);min-height:48px;color:var(--ink);font:inherit;cursor:pointer;background:0 0;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;padding:0 16px;display:flex}[data-duowenwen] .dw-credit-switch-item:hover{border-color:var(--accent)}[data-duowenwen] .dw-credit-switch-name{align-items:center;gap:8px;font-weight:600;display:inline-flex}[data-duowenwen] .dw-credit-switch-name em{background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:1px 8px;font-size:12px;font-style:normal;font-weight:600}[data-duowenwen] .dw-credit-switch-meta{color:var(--muted);font-size:14px}[data-duowenwen] .dw-credit-redeem{margin-top:12px}[data-duowenwen] .dw-credit-redeem>.dw-credit-link{font:inherit;cursor:pointer;background:0 0;border:0;padding:0;font-size:14px}[data-duowenwen] .dw-redeem-inline form{gap:8px;display:flex}[data-duowenwen] .dw-redeem-inline .dw-credit-input{flex:1;min-width:0}
[data-duowenwen] .dwc{--card-hi:#5b77ff;--card:#3352e8;--card-lo:#1f31a8;--card-ink:#fff;--card-soft:#ffffffb8;--card-faint:#ffffff80;--seal-ink:#e6ebff;z-index:80;overscroll-behavior:contain;-webkit-tap-highlight-color:transparent;outline:none;display:flex;position:fixed;inset:0;overflow-y:auto}[data-duowenwen] .dwc-veil{background:radial-gradient(60vmax 50vmax at 50% 18%, var(--blob-a), transparent 70%), radial-gradient(40vmax 40vmax at 90% 90%, var(--blob-b), transparent 70%), color-mix(in srgb, var(--bg) 86%, transparent);-webkit-backdrop-filter:blur(18px)saturate(140%);backdrop-filter:blur(18px)saturate(140%);position:fixed;inset:0}[data-duowenwen] .dwc-close{top:max(14px, env(safe-area-inset-top));z-index:2;width:40px;height:40px;color:var(--muted);background:var(--glass);box-shadow:inset 0 0 0 1px var(--edge-line);border-radius:999px;place-items:center;display:grid;position:fixed;right:14px}[data-duowenwen] .dwc-close:hover{color:var(--ink)}[data-duowenwen] .dwc-stage{flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:472px;min-height:100%;margin:auto;padding:72px 16px 40px;display:flex;position:relative}[data-duowenwen] .dwc-scene{perspective:1200px;width:100%;max-width:440px;position:relative;container-type:inline-size}[data-duowenwen] .dwc-scene:after{content:"";filter:blur(10px);z-index:-1;background:radial-gradient(closest-side,#17268c61,#0000);border-radius:50%;height:22%;position:absolute;bottom:-6%;left:10%;right:10%}[data-duowenwen] .dwc-rise,[data-duowenwen] .dwc-flip,[data-duowenwen] .dwc-land{transform-style:preserve-3d}[data-duowenwen] .dwc-flip{transform:rotateY(180deg)}[data-duowenwen] .dwc-land{aspect-ratio:1.586;position:relative}[data-duowenwen] .dwc-face{--ink:#fff;--dw-logo-accent:#c3d0ff;color:var(--card-ink);background:radial-gradient(90% 70% at 12% 0%, #ffffff42, transparent 60%), linear-gradient(140deg, var(--card-hi) 0%, var(--card) 46%, var(--card-lo) 100%);backface-visibility:hidden;font-feature-settings:"tnum";border-radius:5.2cqw;line-height:1.2;position:absolute;inset:0;overflow:hidden;box-shadow:inset 0 1px #ffffff80,inset 0 0 0 1px #ffffff24,0 24px 48px -18px #17268c8c}[data-duowenwen] .dwc-back{transform:rotateY(180deg)}[data-duowenwen] .dwc-mark{color:#fff;opacity:.075;pointer-events:none;width:84cqw;height:84cqw;position:absolute;top:-22cqw;right:-22cqw}[data-duowenwen] .dwc-top{justify-content:space-between;align-items:flex-start;display:flex;position:absolute;top:5.4cqw;left:6cqw;right:6cqw}[data-duowenwen] .dwc-brand{letter-spacing:.04em;align-items:center;gap:1.6cqw;font-size:4.2cqw;font-weight:700;display:inline-flex}[data-duowenwen] .dwc-brand .dw-logo{width:6.6cqw;height:6.6cqw}[data-duowenwen] .dwc-name{letter-spacing:.3em;color:var(--card-soft);flex-direction:column;align-items:flex-end;gap:.6cqw;margin-right:-.3em;font-size:3.4cqw;font-weight:600;display:flex}[data-duowenwen] .dwc:lang(en) .dwc-name{letter-spacing:.04em;margin-right:0}[data-duowenwen] .dwc-name small{letter-spacing:.32em;color:var(--card-faint);font-size:2cqw;font-weight:500}[data-duowenwen] .dwc-front-pack{letter-spacing:.02em;font-size:8.6cqw;font-weight:700;position:absolute;top:25cqw;left:6cqw}[data-duowenwen] .dwc-plate{background:#0a145a47;border-radius:2.8cqw;flex-direction:column;gap:1.2cqw;padding:2.8cqw 3.6cqw;display:flex;position:absolute;bottom:6cqw;left:6cqw;right:6cqw;box-shadow:inset 0 0 0 1px #ffffff29,inset 0 1px #ffffff1f}[data-duowenwen] .dwc-plate small{letter-spacing:.24em;color:var(--card-faint);font-size:2.4cqw}[data-duowenwen] .dwc-plate span{letter-spacing:.08em;white-space:nowrap;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:4.6cqw;font-weight:600}[data-duowenwen] .dwc-amount{align-items:baseline;gap:1.8cqw;display:flex;position:absolute;top:19cqw;left:6cqw}[data-duowenwen] .dwc-amount b{letter-spacing:-.02em;font-size:17cqw;font-weight:750;line-height:1}[data-duowenwen] .dwc-amount span{color:var(--card-soft);font-size:4.4cqw;font-weight:600}[data-duowenwen] .dwc-rows{gap:4.4cqw;margin:0;display:flex;position:absolute;bottom:5.6cqw;left:6cqw;right:34cqw}[data-duowenwen] .dwc-rows div{flex-direction:column;flex:none;gap:1cqw;display:flex}[data-duowenwen] .dwc-rows dt{letter-spacing:.16em;color:var(--card-faint);white-space:nowrap;font-size:2.4cqw}[data-duowenwen] .dwc-rows dd{white-space:nowrap;margin:0;font-size:3.5cqw;font-weight:600}[data-duowenwen] .dwc-seal{width:25cqw;height:25cqw;color:var(--seal-ink);background:radial-gradient(closest-side,#ffffff29,#ffffff0f);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:.6cqw;display:flex;position:absolute;bottom:5cqw;right:5.4cqw;transform:rotate(-8deg)}[data-duowenwen] .dwc-seal svg{width:100%;height:100%;position:absolute;inset:0}[data-duowenwen] .dwc-seal b{letter-spacing:.12em;margin-right:-.12em;font-size:5cqw;font-weight:750}[data-duowenwen] .dwc-seal small{letter-spacing:.26em;opacity:.8;font-size:1.7cqw}[data-duowenwen] .dwc-seal .dwc-seal-date{letter-spacing:.06em;font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace}[data-duowenwen] .dwc-sweep{opacity:0;pointer-events:none;background:linear-gradient(110deg,#0000,#ffffff6b,#0000);width:34%;position:absolute;top:-20%;bottom:-20%;left:0;transform:translate(-120%)skew(-18deg)}[data-duowenwen] .dwc-shade{opacity:0;pointer-events:none;background:#000;position:absolute;inset:0}[data-duowenwen] .dwc-copy{text-align:center;flex-direction:column;align-items:center;gap:6px;margin-top:40px;display:flex}[data-duowenwen] .dwc-headline{letter-spacing:.04em;outline:none;margin:0;font-size:30px;font-weight:700;line-height:1.3}[data-duowenwen] .dwc-promise{color:var(--accent);text-wrap:balance;margin:0;font-size:17px;font-weight:600;line-height:1.5}[data-duowenwen] 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