html,body{width:100%;height:100%}input::-ms-clear{display:none}input::-ms-reveal{display:none}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%;-ms-overflow-style:scrollbar;-webkit-tap-highlight-color:#0000;font-family:sans-serif;line-height:1.15}body{margin:0}[tabindex="-1"]:focus{outline:none}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5em;font-weight:500}p{margin-top:0;margin-bottom:1em}abbr[title],abbr[data-original-title]{cursor:help;border-bottom:0;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}address{font-style:normal;line-height:inherit;margin-bottom:1em}input[type=text],input[type=password],input[type=number],textarea{-webkit-appearance:none}ol,ul,dl{margin-top:0;margin-bottom:1em}ol ol,ul ul,ol ul,ul ol{margin-bottom:0}dt{font-weight:500}dd{margin-bottom:.5em;margin-left:0}blockquote{margin:0 0 1em}dfn{font-style:italic}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}pre,code,kbd,samp{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:1em}pre{margin-top:0;margin-bottom:1em;overflow:auto}figure{margin:0 0 1em}img{vertical-align:middle;border-style:none}a,area,button,[role=button],input:not([type=range]),label,select,summary,textarea{touch-action:manipulation}table{border-collapse:collapse}caption{text-align:left;caption-side:bottom;padding-top:.75em;padding-bottom:.3em}input,button,select,optgroup,textarea{color:inherit;font-size:inherit;font-family:inherit;line-height:inherit;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,html [type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner{border-style:none;padding:0}[type=button]::-moz-focus-inner{border-style:none;padding:0}[type=reset]::-moz-focus-inner{border-style:none;padding:0}[type=submit]::-moz-focus-inner{border-style:none;padding:0}input[type=radio],input[type=checkbox]{box-sizing:border-box;padding:0}input[type=date],input[type=time],input[type=datetime-local],input[type=month]{-webkit-appearance:listbox}textarea{resize:vertical;overflow:auto}fieldset{border:0;min-width:0;margin:0;padding:0}legend{width:100%;max-width:100%;color:inherit;font-size:1.5em;line-height:inherit;white-space:normal;margin-bottom:.5em;padding:0;display:block}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button{height:auto}[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-cancel-button{-webkit-appearance:none}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item}template{display:none}[hidden]{display:none!important}
:root{--lumi-primary-50:#f7f3ff;--lumi-primary-100:#efe7ff;--lumi-primary-200:#e2d3ff;--lumi-primary-300:#d1b8ff;--lumi-primary-400:#b994ff;--lumi-primary-500:#9f6bff;--lumi-primary-600:#8b5cf6;--lumi-primary-700:#7443d8;--lumi-neutral-black:#000;--lumi-neutral-white:#fff;--lumi-neutral-gray-100:#f4f4f5;--lumi-neutral-gray-300:#d4d4d8;--lumi-neutral-gray-500:#71717a;--lumi-neutral-gray-700:#3f3f46;--lumi-neutral-gray-900:#18181b;--lumi-color-ink:#2f234a;--lumi-color-primary:#7443d8;--lumi-color-primary-hover:#8b5cf6;--lumi-color-lavender:#b994ff;--lumi-color-lavender-mist:#efe7ff;--lumi-color-blush:#f7f3ff;--lumi-color-star:#f4b860;--lumi-color-success:#62c98d;--lumi-color-success-strong:#2f9258;--lumi-color-success-soft:#62c98d24;--lumi-color-danger:#d4380d;--lumi-color-warning:#f4b860;--lumi-color-canvas:#fcfaff;--lumi-color-bg-page:#fcfaff;--lumi-color-bg-panel:#f6f2ff;--lumi-color-bg-card:#fff;--lumi-color-panel:#fff;--lumi-color-line:#e8dffb;--lumi-color-border-soft:#e8dffb;--lumi-color-text:#2f234a;--lumi-color-text-secondary:#6e6291;--lumi-color-text-muted:#9b90bc;--lumi-radius-control:12px;--lumi-radius-panel:22px;--lumi-radius-popover:18px}
:root{--ink:var(--lumi-color-text);--ink-strong:var(--lumi-color-ink);--muted:var(--lumi-color-text-secondary);--soft:var(--lumi-color-text-muted);--canvas:var(--lumi-color-canvas);--paper:var(--lumi-color-panel);--blush:var(--lumi-color-blush);--mist:var(--lumi-color-lavender-mist);--line:var(--lumi-color-line);--plum:var(--lumi-color-primary);--violet:var(--lumi-color-primary-hover);--lavender:var(--lumi-color-lavender);--star:var(--lumi-color-star);--success:var(--lumi-color-success);--shadow-sm:0 4px 14px #4d467f14;--shadow-md:0 18px 40px #4d467f1f;--shadow-lg:0 32px 70px #4d467f2e;--shadow-glow:0 24px 60px #7443d847;--radius-sm:10px;--radius-md:14px;--radius-lg:22px;--radius-xl:30px;--serif:"Fraunces", "Source Serif Pro", Georgia, "Times New Roman", serif;--sans:"Inter", "Avenir Next", "Nunito Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--container:1200px;--nav-h:68px}*{box-sizing:border-box}html,body{min-height:100%;padding:0}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px)}body{background:var(--canvas);color:var(--ink);font-family:var(--sans);-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased;margin:0;line-height:1.55;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}ul,ol{list-style:none}.section-eyebrow{color:var(--plum);letter-spacing:.16em;text-transform:uppercase;align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.section-title{color:var(--ink-strong);font-family:var(--serif);letter-spacing:-.01em;max-width:820px;margin-top:16px;font-size:clamp(30px,4vw,50px);font-weight:600;line-height:1.08}.section-title__en{color:var(--muted);font-family:var(--sans);letter-spacing:0;margin-top:12px;font-size:.42em;font-weight:500;line-height:1.4;display:block}.feature-row,.platform-card,.faq-item,.how-step,.tier-card,.bottom-cta__inner{animation:linear both rise-in;animation-timeline:view();animation-range:entry cover 28%}@keyframes rise-in{0%{opacity:0;transform:translateY(36px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.feature-row,.platform-card,.faq-item,.how-step,.tier-card,.bottom-cta__inner{animation:none}html{scroll-behavior:auto}}.site-nav{-webkit-backdrop-filter:saturate(140%)blur(14px);backdrop-filter:saturate(140%)blur(14px);height:var(--nav-h);z-index:50;background:#fcfaffc7;border-bottom:1px solid #e8dffbb3;position:sticky;top:0;left:0;right:0}.site-nav__inner{height:100%;max-width:var(--container);align-items:center;gap:28px;margin:0 auto;padding:0 28px;display:flex}.site-nav__brand{align-items:center;gap:10px;display:inline-flex}.site-nav__icon{width:28px;height:28px}.site-nav__wordmark{width:auto;height:18px;display:block}.site-nav__links{flex:1;justify-content:center;align-items:center;gap:4px;display:flex}.site-nav__link{border-radius:var(--radius-sm);color:var(--muted);align-items:baseline;gap:6px;padding:8px 12px;font-size:14px;font-weight:500;transition:color .16s,background .16s;display:inline-flex}.site-nav__link:hover{background:var(--mist);color:var(--ink-strong)}.site-nav__link.is-disabled{cursor:not-allowed;opacity:.55}.site-nav__link.is-disabled:hover{color:var(--muted);background:0 0}.site-nav__link-zh{font-weight:600}.site-nav__link-en{color:var(--soft);letter-spacing:.05em;font-size:11px}.site-nav__cta{background:var(--ink-strong);color:#fff;border-radius:999px;align-items:center;gap:8px;padding:9px 16px;font-size:13px;font-weight:600;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex}.site-nav__cta:hover{background:var(--plum);box-shadow:var(--shadow-glow);transform:translateY(-1px)}.site-nav__cta.is-disabled{background:var(--soft);cursor:not-allowed}.site-nav__cta.is-disabled:hover{background:var(--soft);box-shadow:none;transform:none}.site-nav__locale{border:1px solid var(--line);color:var(--ink-strong);border-radius:999px;justify-content:center;align-items:center;gap:6px;min-width:54px;height:36px;padding:0 12px;font-size:13px;font-weight:700;transition:border-color .16s,color .16s,background .16s;display:inline-flex}.site-nav__locale:hover{background:var(--mist);border-color:var(--lavender);color:var(--plum)}.site-nav__actions{align-items:center;gap:14px;display:flex}.site-nav__login{border-radius:var(--radius-sm);color:var(--ink-strong);align-items:center;padding:8px 12px;font-size:14px;font-weight:600;transition:color .16s,background .16s;display:inline-flex}.site-nav__login:hover{background:var(--mist);color:var(--plum)}.site-nav__user{cursor:pointer;background:0 0;border:none;padding:0;display:inline-flex}.landing{display:block}.hero{padding:88px 28px 104px;position:relative;overflow:hidden}.hero__bg{pointer-events:none;z-index:0;position:absolute;inset:0}.hero__orb{border-radius:50%;position:absolute}.hero__orb--violet{filter:blur(90px);background:radial-gradient(circle,#b994ff6b 0%,#0000 68%);width:620px;height:620px;top:-180px;left:-160px}.hero__inner{max-width:var(--container);z-index:1;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);align-items:center;gap:72px;margin:0 auto;display:grid;position:relative}.hero__copy{gap:22px;display:grid}.hero__eyebrow{border:1px solid var(--line);color:var(--plum);letter-spacing:.18em;text-transform:uppercase;background:#ffffffb3;border-radius:999px;align-items:center;gap:6px;width:fit-content;padding:7px 14px;font-size:12px;font-weight:700;display:inline-flex}.hero__title{color:var(--ink-strong);font-family:var(--serif);letter-spacing:-.02em;max-width:620px;font-size:clamp(40px,5.6vw,76px);font-weight:600;line-height:1.02}.hero__title-accent{background:linear-gradient(120deg, var(--plum) 10%, var(--star) 90%);color:#0000;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero__title-en{color:var(--muted);font-family:var(--sans);letter-spacing:0;margin-top:18px;font-size:.32em;font-weight:500;line-height:1.4;display:block}.hero__sub{color:var(--muted);max-width:520px;font-size:17px;line-height:1.65}.hero__sub span{color:var(--soft);margin-top:10px;font-size:14px;display:block}.hero__ctas{flex-wrap:wrap;gap:12px;display:flex}.hero__meta{color:var(--soft);align-items:center;gap:8px;font-size:13px;display:inline-flex}.hero__meta-dot{background:var(--success);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #62c98d2e}.install-btn{cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:14px;align-items:center;gap:12px;padding:12px 18px;transition:transform .16s,box-shadow .2s,background .2s;display:inline-flex}.install-btn__text{text-align:left;display:grid}.install-btn__text strong{letter-spacing:0;font-size:15px;font-weight:700}.install-btn__text em{color:inherit;letter-spacing:.05em;opacity:.7;font-size:11px;font-style:normal}.install-btn--primary{background:var(--ink-strong);box-shadow:var(--shadow-md);color:#fff}.install-btn--primary:hover{background:var(--plum);box-shadow:var(--shadow-glow);transform:translateY(-2px)}.install-btn--ghost{border:1px solid var(--line);box-shadow:var(--shadow-sm);color:var(--ink-strong);background:#fffc}.install-btn--ghost:hover{border-color:var(--lavender);transform:translateY(-2px)}.install-btn.is-disabled{cursor:not-allowed;opacity:.6}.install-btn.is-disabled:hover{box-shadow:none;transform:none}.hero__visual{position:relative}.browser-mock{border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);background:#fff;gap:0;transition:transform .6s;display:grid;overflow:hidden;transform:perspective(1400px)rotateY(-6deg)rotateX(4deg)translateZ(0)}.browser-mock:hover{transform:perspective(1400px)rotateY(-2deg)rotateX(1deg)translateZ(0)}.browser-mock__bar{border-bottom:1px solid var(--line);background:linear-gradient(#faf7ff,#f3eeff);align-items:center;gap:8px;padding:12px 16px;display:flex}.browser-mock__dot{background:#d6cef0;border-radius:50%;width:10px;height:10px}.browser-mock__dot:first-child{background:#ff7e7e}.browser-mock__dot:nth-child(2){background:#ffc46b}.browser-mock__dot:nth-child(3){background:#68d391}.browser-mock__url{border:1px solid var(--line);color:var(--muted);background:#fff;border-radius:999px;margin-left:12px;padding:4px 12px;font-size:12px}.browser-mock__video{aspect-ratio:16/9;position:relative}.browser-mock__poster{background:radial-gradient(circle at 30% 30%,#b994ff80,#0000 60%),radial-gradient(circle at 80% 70%,#f4b86066,#0000 60%),linear-gradient(135deg,#2f234a,#4a3676);position:absolute;inset:0}.browser-mock__chip{color:var(--plum);background:#ffffffeb;border-radius:999px;align-items:center;gap:6px;padding:5px 11px;font-size:12px;font-weight:700;display:inline-flex;position:absolute;top:16px;left:16px}.browser-mock__chip-dot{background:var(--plum);border-radius:50%;width:6px;height:6px;box-shadow:0 0 0 4px #7443d833}.browser-mock__caption{color:#fff;text-align:center;background:#171529c7;border-radius:12px;gap:6px;width:max-content;max-width:calc(100% - 36px);padding:12px 14px;display:grid;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.browser-mock__caption-source{color:#ffffffd1;font-size:13px;line-height:1.4}.browser-mock__caption-translation{color:#ffd9a3;font-size:14px;font-weight:600;line-height:1.4}.browser-mock__summary{border-top:1px solid var(--line);padding:16px 18px 18px}.browser-mock__summary-head{color:var(--plum);letter-spacing:.04em;align-items:center;gap:8px;margin-bottom:12px;font-size:12px;font-weight:700;display:flex}.browser-mock__summary-icon{border-radius:6px;width:18px;height:18px}.browser-mock__summary-badge{background:linear-gradient(135deg, var(--plum), var(--star));color:#fff;letter-spacing:.08em;border-radius:999px;margin-left:auto;padding:2px 8px;font-size:10px;font-weight:800}.browser-mock__summary ul{gap:8px;display:grid}.browser-mock__summary li{color:var(--ink-strong);align-items:baseline;gap:10px;font-size:13px;line-height:1.5;display:flex}.browser-mock__summary .ts{background:var(--mist);color:var(--plum);border-radius:6px;padding:2px 7px;font-size:11px;font-weight:700}.features{padding:96px 28px}.features__head{max-width:var(--container);text-align:center;margin:0 auto 56px}.features__head .section-title{margin-left:auto;margin-right:auto}.features__list{max-width:var(--container);gap:100px;margin:0 auto;display:grid}.feature-row{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);align-items:center;gap:64px;display:grid}.feature-row.is-reversed{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}.feature-row.is-reversed .feature-row__copy{order:2}.feature-row.is-reversed .feature-row__visual{order:1}.feature-row__copy{gap:18px;display:grid}.feature-row__eyebrow{color:var(--plum);letter-spacing:.12em;text-transform:uppercase;align-items:center;gap:8px;font-size:12px;font-weight:700;display:inline-flex}.feature-row__title{color:var(--ink-strong);font-family:var(--serif);letter-spacing:-.01em;font-size:clamp(28px,3.2vw,42px);font-weight:600;line-height:1.1}.feature-row__title-en{color:var(--muted);font-family:var(--sans);letter-spacing:0;margin-top:10px;font-size:.45em;font-weight:500;line-height:1.45;display:block}.feature-row__body{color:var(--muted);max-width:480px;font-size:16px;line-height:1.7}.feature-row__bullets{gap:14px;margin-top:8px;display:grid}.feature-row__bullets li{border:1px solid var(--line);border-radius:var(--radius-md);background:#ffffffb8;gap:4px;padding:14px 16px;display:grid}.feature-row__bullets strong{color:var(--ink-strong);font-size:14px;font-weight:700}.feature-row__bullets em{color:var(--soft);font-size:12px;font-style:normal}.feature-row__visual{justify-content:center;display:flex}.viz{border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);background:#fff;gap:0;width:100%;display:grid;overflow:hidden}.viz--subtitle{grid-template-rows:auto auto}.viz__player{aspect-ratio:16/9;position:relative}.viz__poster{position:absolute;inset:0}.viz__poster--violet{background:radial-gradient(circle at 30% 40%,#b994ff8c,#0000 55%),radial-gradient(circle at 75% 75%,#f4b86059,#0000 60%),linear-gradient(135deg,#2f234a,#5a3fa8)}.viz__captions{text-align:center;background:#171529cc;border-radius:12px;gap:6px;width:max-content;max-width:calc(100% - 32px);padding:12px 16px;display:grid;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.viz__line{font-size:13px;line-height:1.4}.viz__line--src{color:#ffffffd1}.viz__line--tr{color:#ffd9a3;font-weight:600}.viz__panel{background:linear-gradient(#faf7ff,#fff);gap:1px;padding:18px 20px;display:grid}.viz__panel-row{border-bottom:1px dashed var(--line);color:var(--muted);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;font-size:13px;display:flex}.viz__panel-row:last-child{border-bottom:0}.viz__panel-row strong{color:var(--ink-strong);gap:6px;font-size:13px;font-weight:600;display:inline-flex}.viz__pill{background:var(--mist);color:var(--plum);border-radius:999px;padding:3px 8px;font-size:11px;font-weight:700}.viz__pill--asr{color:#b8761e;background:#f4b8602e}.viz--summary{padding:22px 24px 24px}.viz__summary-head{color:var(--plum);align-items:center;gap:10px;margin-bottom:14px;display:flex}.viz__summary-head div{display:grid}.viz__summary-head strong{color:var(--ink-strong);font-size:14px;font-weight:700}.viz__summary-head span{color:var(--soft);font-size:11px}.viz__summary-lead{background:var(--mist);border-radius:var(--radius-md);color:var(--ink-strong);margin-bottom:16px;padding:14px 16px;font-size:14px;line-height:1.55}.viz__chapters{gap:10px;display:grid}.viz__chapters li{border-bottom:1px dashed var(--line);align-items:center;gap:14px;padding-bottom:10px;display:flex}.viz__chapters li:last-child{border-bottom:0;padding-bottom:0}.viz__ts{background:var(--ink-strong);color:#fff;letter-spacing:.04em;border-radius:6px;flex-shrink:0;padding:4px 8px;font-size:11px;font-weight:700}.viz__chap{color:var(--ink-strong);font-size:14px;line-height:1.4}.viz--adskip{padding:28px 24px}.viz__ad-stage{grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;display:grid}.viz__ad-card{border-radius:var(--radius-md);gap:8px;padding:18px;display:grid}.viz__ad-card--ad{opacity:.7;background:linear-gradient(135deg,#ffe9e9,#fff5e1);border:1px solid #f8c6c6;-webkit-text-decoration:line-through #d4380d;text-decoration:line-through #d4380d;text-decoration-thickness:2px}.viz__ad-card--content{background:linear-gradient(135deg,#ecfff2,#f6f1ff);border:1px solid #c9eed3}.viz__ad-tag{color:#fff;letter-spacing:.1em;text-transform:uppercase;background:#d4380d;border-radius:6px;width:fit-content;padding:3px 7px;font-size:10px;font-weight:800}.viz__ad-tag--ok{background:var(--success)}.viz__ad-card p{color:var(--ink-strong);font-size:13px}.viz__ad-arrow{background:var(--plum);border-radius:var(--radius-md);box-shadow:var(--shadow-glow);color:#fff;letter-spacing:.06em;text-transform:uppercase;place-items:center;gap:4px;padding:12px 14px;font-size:11px;font-weight:700;display:grid}.viz__ad-toggle{color:var(--success);align-items:center;gap:8px;margin-top:18px;font-size:13px;font-weight:700;display:inline-flex}.viz__ad-dot{background:var(--success);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #62c98d38}.how{background:linear-gradient(180deg, transparent, var(--blush) 30%, transparent);padding:96px 28px}.how__head{max-width:var(--container);text-align:center;margin:0 auto 48px}.how__head .section-title{margin-left:auto;margin-right:auto}.how__steps{max-width:var(--container);grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:0 auto;display:grid}.how-step{border:1px solid 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