:root{--canvas:#f5f5f7;--paper:#fff;--ink:#111113;--ink-soft:#2b2b2f;--muted:#6e6e73;--muted-light:#98989f;--line:#1111131a;--line-strong:#1111132e;--blue:#1673e6;--blue-dark:#0c5fca;--orange:#ff7a1a;--green:#2ccf70;--red:#ff545b;--max-width:1180px;--pad:clamp(20px, 5vw, 46px);--radius:28px;--ease:cubic-bezier(.2, .7, .2, 1);--sans:-apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{min-width:320px;color:var(--ink);background:var(--canvas);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;line-height:1.5;overflow-x:hidden}html:lang(zh-Hans) body{font-family:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", var(--sans)}img,svg{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,summary{font:inherit}:focus-visible{outline-offset:4px;outline:3px solid #1673e673}.wrap{width:100%;max-width:var(--max-width);padding-inline:var(--pad);margin-inline:auto}h1,h2,h3{letter-spacing:-.035em;text-wrap:balance;line-height:1.08}h1{font-size:clamp(46px,6.6vw,82px);font-weight:760}h2{font-size:clamp(36px,4.7vw,58px);font-weight:740}h3{font-size:21px;font-weight:690}p{text-wrap:pretty}.eyebrow{color:var(--blue);letter-spacing:.08em;text-transform:uppercase;font-size:13px;font-weight:720}html:lang(zh-Hans) .eyebrow{letter-spacing:.12em}.button,.store-button{background:var(--ink);color:#fff;min-height:52px;transition:transform .18s var(--ease), background .18s ease, box-shadow .18s ease;border:0;border-radius:14px;justify-content:center;align-items:center;gap:10px;padding:0 23px;font-size:16px;font-weight:680;display:inline-flex}.button:hover,.store-button:hover{background:#000;transform:translateY(-2px);box-shadow:0 10px 28px #00000024}.button-small{border-radius:11px;min-height:40px;padding-inline:17px;font-size:14px}.store-button svg{flex:none;width:22px;height:22px}.text-link{color:var(--ink-soft);align-items:center;gap:9px;font-size:16px;font-weight:620;display:inline-flex}.text-link span,.center-link span,.contact-secondary span{color:var(--blue);transition:transform .16s var(--ease)}.text-link:hover span{transform:translateY(3px)}.site-nav{z-index:50;-webkit-backdrop-filter:saturate(180%)blur(20px);background:#f5f5f7c2;border-bottom:1px solid #0000;transition:border-color .24s,background .24s;position:sticky;top:0}.site-nav.is-scrolled{border-color:var(--line);background:#f5f5f7e6}.nav-inner{align-items:center;gap:30px;height:66px;display:flex}.brand{letter-spacing:-.025em;white-space:nowrap;align-items:center;gap:10px;font-size:20px;font-weight:740;display:inline-flex}.brand img{object-fit:contain;width:34px;height:34px}.nav-links{align-items:center;gap:28px;display:flex}.nav-links a,.language-link{color:var(--muted);font-size:14px;font-weight:560;transition:color .15s}.nav-links a:hover,.language-link:hover{color:var(--ink)}.nav-actions{align-items:center;gap:18px;margin-left:auto;display:flex}.js [data-reveal]{opacity:0;transition:opacity .7s var(--ease), transform .7s var(--ease);transition-delay:var(--delay,0s);transform:translateY(24px)}.js [data-reveal].is-visible{opacity:1;transform:none}.hero{padding:clamp(56px,6vw,78px) 0 clamp(52px,5vw,68px);overflow:clip}.hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);align-items:center;gap:clamp(40px,5vw,70px);display:grid}.hero-copy{max-width:590px;transform:translateY(-48px)}.hero-copy h1{white-space:pre-line;margin:16px 0 22px}html:lang(zh-Hans) .hero-copy h1{letter-spacing:-.045em;font-size:clamp(42px,4.4vw,54px);line-height:1.08}html:lang(en) .hero-copy h1{font-size:clamp(43px,4.45vw,58px);line-height:1.03}.hero-lead{max-width:35rem;color:var(--muted);white-space:pre-line;font-size:clamp(17px,1.65vw,19px);line-height:1.68}.hero-actions{flex-wrap:wrap;align-items:center;gap:24px;margin-top:34px;display:flex}.hero-note{color:var(--muted-light);margin-top:24px;font-size:13px}.hero-stage{background:0 0;min-height:600px;position:relative;overflow:visible}.hero-stage:before{content:"";aspect-ratio:1;filter:blur(12px);background:radial-gradient(circle,#4d8be51f,#ffa05c0e 44%,#0000 70%);border-radius:50%;width:min(430px,92%);position:absolute;top:12%;left:50%;transform:translate(-50%)}.hero-device{width:min(350px,84%);transform:translate(-50%, var(--phone-shift,0px));will-change:transform;position:absolute;top:0;left:46%}.hero-device img{filter:drop-shadow(0 34px 38px #0a0c1430);width:100%;height:auto}.difference-band{border-block:1px solid var(--line);background:var(--paper);padding:clamp(64px,8vw,96px) 0}.difference-layout{grid-template-columns:minmax(230px,.72fr) minmax(0,1.5fr);gap:clamp(56px,8vw,110px);display:grid}.difference-heading h2{max-width:330px;margin-top:14px;font-size:clamp(34px,3.7vw,46px)}.difference-grid{grid-template-columns:repeat(3,1fr);display:grid}.difference-grid article{border-left:1px solid var(--line);min-width:0;padding:4px 28px 8px}.difference-grid article:first-child{border-left:0;padding-left:0}.difference-grid article:last-child{padding-right:0}.difference-grid article>span{color:var(--blue);font-size:12px;font-weight:720}.difference-grid h3{margin:30px 0 12px;font-size:19px}.difference-grid p{color:var(--muted);font-size:15px;line-height:1.75}.phone-shot{background:#171719;border:1px solid #ffffff2e;border-radius:54px;overflow:hidden;box-shadow:0 28px 50px #0a0c142e}.phone-shot img{width:100%;height:auto}.problem-band{border-block:1px solid var(--line);background:var(--paper);padding:clamp(70px,10vw,128px) 0}.problem-grid{grid-template-columns:.78fr 1.22fr;align-items:center;gap:clamp(40px,7vw,100px);display:grid}.problem-copy h2,.showcase-copy h2,.section-heading h2{margin:15px 0 20px}.problem-copy>p:last-child,.showcase-copy>p,.section-heading>p:last-child{color:var(--muted);font-size:18px;line-height:1.7}.editorial-illustration{position:relative}.editorial-illustration img{width:100%}.editorial-illustration figcaption{border-top:1px solid var(--line);color:var(--muted-light);text-align:right;padding-top:12px;font-size:12px}.section{padding:clamp(82px,11vw,142px) 0}.section-white{background:var(--paper)}.section-heading{max-width:720px;margin-bottom:clamp(44px,6vw,70px)}.section-heading.center{text-align:center;margin-inline:auto}.how-intro,.privacy-intro{grid-template-columns:minmax(260px,.72fr) minmax(0,1.28fr);align-items:center;gap:clamp(44px,7vw,96px);margin-bottom:clamp(42px,6vw,68px);display:grid}.privacy-intro{grid-template-columns:minmax(300px,.82fr) minmax(0,1.18fr)}.privacy-intro h2{font-size:clamp(36px,4vw,52px)}.how-intro .section-heading,.privacy-intro .section-heading{margin-bottom:0}.explain-illustration{min-width:0}.explain-illustration img{width:100%;height:auto}.privacy-illustration{justify-self:end;max-width:700px}.steps{border-top:1px solid var(--line-strong);grid-template-columns:repeat(3,1fr);list-style:none;display:grid}.steps li{border-right:1px solid var(--line);min-height:270px;padding:24px 28px 0 0}.steps li+li{padding-left:28px}.steps li:last-child{border-right:0}.step-number{color:var(--muted-light);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700;display:block}.step-line{background:var(--blue);width:34px;height:3px;margin:46px 0 23px}.steps h3{margin-bottom:11px}.steps p{color:var(--muted);font-size:15px;line-height:1.65}.showcase-section{background:#ececf0}.split-showcase{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);align-items:center;gap:clamp(46px,8vw,110px);display:grid}.split-showcase.reverse{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}.check-list{flex-direction:column;gap:13px;margin-top:28px;list-style:none;display:flex}.check-list li{color:var(--ink-soft);align-items:center;gap:12px;font-size:15px;font-weight:590;display:flex}.check-list span{width:22px;height:22px;color:var(--blue);background:#1673e61a;border-radius:50%;place-items:center;font-size:12px;display:grid}.metric-demo{color:#fff;background:#19191c;border-radius:32px;padding:clamp(28px,4.5vw,48px);overflow:hidden}.metric-top{flex-direction:column;gap:8px;display:flex}.metric-top span,.metric-footer span{color:#ffffff80;font-size:14px}.metric-top strong{letter-spacing:-.04em;font-size:clamp(35px,5vw,54px);font-weight:650}.trend-line{width:100%;margin:34px 0 16px;overflow:visible}.chart-grid{fill:none;stroke:#ffffff1f;stroke-width:1px}.chart-fill{fill:#2ccf701a;opacity:0;transition:opacity .5s .85s}.chart-stroke{fill:none;stroke:var(--green);stroke-width:6px;stroke-linecap:round;stroke-dasharray:660;stroke-dashoffset:660px;transition:stroke-dashoffset 1.25s var(--ease) .15s}.chart-dot{fill:var(--green);opacity:0;transform-box:fill-box;transform-origin:50%;transition:opacity .18s ease 1.15s, transform .36s var(--ease) 1.15s;transform:scale(0)}.metric-demo.is-running .chart-stroke{stroke-dashoffset:0}.metric-demo.is-running .chart-fill{opacity:1}.metric-demo.is-running .chart-dot{opacity:1;transform:scale(1)}.metric-footer{justify-content:space-between;gap:20px;display:flex}.metric-footer b{color:var(--red);font-size:19px}.shared-illustration img{width:100%}.small-note{border-left:2px solid var(--orange);margin-top:26px;padding-left:15px;color:var(--muted-light)!important;font-size:13px!important}.insights-section{background:var(--canvas);overflow:hidden}.insights-layout{grid-template-columns:minmax(360px,.95fr) minmax(0,1.05fr);align-items:center;gap:clamp(54px,8vw,112px);display:grid}.screen-pair{min-height:690px;position:relative}.screen-pair .phone-shot{width:min(295px,67%);position:absolute}.phone-back{opacity:.76;top:0;left:0}.phone-front{z-index:2;bottom:0;right:0}.feature-list{border-top:1px solid var(--line-strong)}.feature-list article{border-bottom:1px solid var(--line);grid-template-columns:44px 1fr;gap:18px;padding:26px 0;display:grid}.feature-list article>span{color:var(--muted-light);font-variant-numeric:tabular-nums;padding-top:3px;font-size:12px;font-weight:700}.feature-list h3{margin-bottom:7px}.feature-list p{color:var(--muted);font-size:15px;line-height:1.6}.privacy-section{border-block:1px solid var(--line);background:var(--paper)}.privacy-grid{border-top:1px solid var(--line-strong);grid-template-columns:repeat(3,1fr);display:grid}.privacy-grid article{border-right:1px solid var(--line);min-height:250px;padding:28px 30px 28px 0}.privacy-grid article+article{padding-left:30px}.privacy-grid article:last-child{border-right:0}.privacy-mark{background:var(--blue);border-radius:50%;width:10px;height:10px;margin-bottom:64px;display:block;box-shadow:0 0 0 6px #1673e61a}.privacy-grid h3{margin-bottom:10px}.privacy-grid p{color:var(--muted);font-size:15px;line-height:1.65}.center-link{text-align:center;margin-top:34px}.center-link a,.contact-secondary{color:var(--ink-soft);align-items:center;gap:9px;font-size:14px;font-weight:620;display:inline-flex}.center-link a:hover span,.contact-secondary:hover span{transform:translate(4px)}.faq-layout{grid-template-columns:.78fr 1.22fr;align-items:start;gap:clamp(48px,8vw,110px);display:grid}.faq-list,.support-faq{border-top:1px solid var(--line-strong)}.faq-list details,.support-faq details{border-bottom:1px solid var(--line)}.faq-list summary,.support-faq summary{cursor:pointer;color:var(--ink-soft);justify-content:space-between;align-items:center;gap:20px;padding:23px 0;font-size:18px;font-weight:640;list-style:none;display:flex}.faq-list summary::-webkit-details-marker{display:none}.support-faq summary::-webkit-details-marker{display:none}.faq-list summary span,.support-faq summary span{color:var(--blue);transition:transform .22s var(--ease);font-size:24px;font-weight:400}.faq-list details[open] summary span,.support-faq details[open] summary span{transform:rotate(45deg)}.faq-list details>p,.support-faq details>p{max-width:60ch;color:var(--muted);padding:0 42px 24px 0;font-size:15px;line-height:1.7}.closing-section{background:var(--canvas);padding:clamp(68px,9vw,110px) 0}.closing-card{background:var(--ink);color:#fff;box-shadow:-50vw 0 0 var(--ink), 50vw 0 0 var(--ink);border-block:1px solid #ffffff2e;grid-template-columns:1fr auto;align-items:center;gap:48px;padding-block:clamp(46px,7vw,76px);display:grid}.closing-card h2{white-space:pre-line;max-width:780px}.closing-card p{color:#ffffffa3;max-width:650px;margin-top:18px;font-size:17px}.store-button-light{color:var(--ink);background:#fff}.store-button-light:hover{background:#f0f0f2}.footer{border-top:1px solid var(--line);background:var(--canvas);padding:70px 0 34px}.footer-grid{grid-template-columns:1.5fr .75fr .75fr;gap:50px;padding-bottom:54px;display:grid}.footer-brand p{max-width:28ch;color:var(--muted);margin-top:16px;font-size:14px}.footer-column h2{color:var(--muted-light);letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px;font-size:12px;font-weight:720}.footer-column a{width:fit-content;color:var(--muted);margin-bottom:11px;font-size:14px;display:block}.footer-column a:hover{color:var(--ink)}.footer-bottom{border-top:1px solid var(--line);color:var(--muted-light);justify-content:space-between;gap:24px;padding-top:24px;font-size:12px;display:flex}.footer-bottom span:last-child{text-align:right;max-width:600px}.legal-page,.support-page{background:var(--paper);min-height:70vh}.legal-wrap,.support-wrap{max-width:980px;padding-top:clamp(68px,10vw,120px);padding-bottom:clamp(80px,12vw,140px)}.legal-header,.support-header{border-bottom:1px solid var(--line-strong);max-width:760px;padding-bottom:44px}.legal-header h1,.support-header h1{margin:16px 0 18px;font-size:clamp(44px,6vw,70px)}.legal-updated{color:var(--muted-light);font-size:13px}.legal-intro,.support-header>p:last-child{max-width:650px;color:var(--muted);margin-top:20px;font-size:18px;line-height:1.7}.legal-body{max-width:760px;padding-top:16px}.legal-body section{border-bottom:1px solid var(--line);padding:34px 0}.legal-body h2,.deletion-notice h2,.contact-card h2{letter-spacing:-.02em;margin-bottom:12px;font-size:23px}.legal-body p,.deletion-notice li{color:var(--ink-soft);font-size:16px;line-height:1.82}.support-wrap{max-width:var(--max-width)}.support-grid{grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);align-items:start;gap:clamp(44px,7vw,90px);margin-top:60px;display:grid}.contact-card{border:1px solid var(--line);background:var(--canvas);border-radius:24px;padding:30px;position:sticky;top:104px}.contact-dot{background:var(--orange);border-radius:50%;width:10px;height:10px;margin-bottom:54px;display:block}.contact-card p{color:var(--muted);margin-bottom:24px;font-size:14px;line-height:1.7}.contact-email{color:var(--blue);overflow-wrap:anywhere;margin:-4px 0 22px;font-size:15px;font-weight:650;display:inline-block}.contact-email:hover{text-underline-offset:4px;text-decoration:underline}.contact-card .button{text-align:center;width:100%;margin-bottom:20px}.contact-secondary{justify-content:center;width:100%}.deletion-steps{border-top:1px solid var(--line-strong);max-width:760px;margin-top:48px;list-style:none}.deletion-steps li{border-bottom:1px solid var(--line);grid-template-columns:60px 1fr;gap:20px;padding:25px 0;display:grid}.deletion-steps span{color:var(--blue);font-size:13px;font-weight:720}.deletion-steps p{color:var(--ink-soft);font-size:17px}.deletion-notice{border-left:3px solid var(--orange);background:var(--canvas);max-width:760px;margin-top:48px;padding:28px 30px}.deletion-notice ul{margin-left:20px}.deletion-notice li+li{margin-top:8px}@media (width<=980px){.hero-grid,.difference-layout,.how-intro,.privacy-intro,.problem-grid,.split-showcase,.split-showcase.reverse,.insights-layout,.faq-layout,.support-grid{grid-template-columns:1fr}.hero-copy{text-align:center;max-width:760px;margin-inline:auto;transform:none}.hero-lead{margin-inline:auto}.hero-actions{justify-content:center}.hero-stage{width:min(620px,100%);margin-inline:auto}.hero-device{left:50%}.difference-heading h2{max-width:520px}.problem-copy,.showcase-copy{max-width:720px}.how-intro,.privacy-intro{gap:30px}.explain-illustration,.privacy-illustration{justify-self:center;width:min(720px,100%)}.shared-illustration{order:2}.insights-layout{max-width:760px}.screen-pair{width:min(620px,100%)}.closing-card{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.contact-card{position:static}}@media (width<=720px){:root{--radius:22px}.nav-links,.nav-actions .button{display:none}.hero{padding-top:46px}.hero-stage{min-height:570px}.hero-device{width:min(310px,78%)}.phone-shot{border-radius:45px}.problem-grid,.difference-layout{gap:48px}.difference-grid{grid-template-columns:1fr}.difference-grid article,.difference-grid article:first-child,.difference-grid article:last-child{border-left:0;border-top:1px solid var(--line);padding:28px 0}.difference-grid h3{margin:14px 0 8px}.steps,.privacy-grid{grid-template-columns:1fr}.steps li,.steps li+li,.privacy-grid article,.privacy-grid article+article{border-right:0;border-bottom:1px solid var(--line);min-height:auto;padding:26px 0 34px}.step-line,.privacy-mark{margin:28px 0 18px}.screen-pair{min-height:560px}.screen-pair .phone-shot{width:min(245px,66%)}.closing-card{box-shadow:-20px 0 0 var(--ink), 20px 0 0 var(--ink)}.footer-grid,.footer-bottom{grid-template-columns:1fr;display:grid}.footer-brand{grid-column:auto}.footer-bottom span:last-child{text-align:left}}@media (width<=480px){h1{font-size:clamp(40px,12vw,56px)}.hero-copy h1{white-space:pre-line}html:lang(zh-Hans) .hero-copy h1,html:lang(en) .hero-copy h1{font-size:40px}.hero-actions{flex-direction:column}.store-button{width:100%}.hero-stage{min-height:510px}.hero-device{width:270px;top:18px}.screen-pair{min-height:480px}.screen-pair .phone-shot{width:205px}.metric-demo{border-radius:24px}.faq-list summary,.support-faq summary{font-size:16px}.deletion-steps li{grid-template-columns:42px 1fr}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.js [data-reveal]{opacity:1;transform:none}.chart-stroke{stroke-dashoffset:0}.chart-fill,.chart-dot{opacity:1;transform:none}}
