:root{--bg-top:#fdfbf8;--bg-bottom:#f7f1e8;--card-bg:#ffffff;--card-border:#e5dbce;--text-primary:#4e433b;--text-secondary:#6b5d4f;--accent:#13759c;--accent-ink:#0f5d7d;--on-accent:#ffffff;--coral:#ca4135;--positive:#597c1f;--shadow:rgba(90, 55, 30, 0.22);--text-heading:#2a211b;--wash-sky:rgba(140, 210, 240, 0.55);--wash-pink:rgba(255, 160, 150, 0.32);--wash-peach:rgba(255, 210, 165, 0.45);--wash-sheen:rgba(255, 255, 255, 0.85);--font-serif:Georgia, "Iowan Old Style", "Palatino Linotype", serif;--font-mono:ui-monospace, "SF Mono", "Menlo", "Cascadia Code", monospace;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--wrap:1120px;--radius-lg:28px;--radius-md:18px;--radius-sm:12px}@media(prefers-color-scheme:dark){:root{--bg-top:#211a15;--bg-bottom:#110e0c;--card-bg:#2d241f;--card-border:#5d4e43;--text-primary:#f2e9dc;--text-secondary:#beae9d;--accent:#5ebde5;--accent-ink:#5ebde5;--on-accent:#0b1a22;--coral:#ff8873;--positive:#b6e36e;--shadow:rgba(0, 0, 0, 0.46);--text-heading:#f2e9dc;--wash-sky:transparent;--wash-pink:transparent;--wash-peach:transparent;--wash-sheen:transparent}}*{box-sizing:border-box}html{background:var(--bg-bottom)}body{margin:0;min-height:100vh;background:radial-gradient(700px 520px at 12% 0%,var(--wash-sheen),transparent 70%),radial-gradient(900px 760px at 88% 8%,var(--wash-sky),transparent 70%),radial-gradient(700px 620px at 100% 780px,var(--wash-pink),transparent 70%),radial-gradient(800px 640px at 0% 760px,var(--wash-peach),transparent 70%),linear-gradient(180deg,var(--bg-top) 0%,var(--bg-bottom) 100%);background-repeat:no-repeat;color:var(--text-primary);font-family:var(--font-sans);font-size:1.0625rem;line-height:1.55;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;overflow-wrap:normal;word-break:keep-all}:lang(zh-hans){overflow-wrap:break-word;word-break:normal}::selection{background:color-mix(in srgb,var(--accent) 30%,transparent)}a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline}*:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}h1,h2,h3{font-family:var(--font-serif);font-weight:700;color:var(--text-heading);line-height:1.15;margin:0 0 .5em}h1,h2,h3,.faq-item summary{overflow-wrap:break-word;-webkit-hyphens:auto;hyphens:auto;hyphenate-limit-chars:12 5 5;-webkit-hyphenate-limit-before:5;-webkit-hyphenate-limit-after:5}h1{font-size:clamp(2.4rem,2rem + 2vw,3.6rem)}h2{font-size:clamp(1.7rem,1.5rem + 1vw,2.4rem)}h3{font-size:1.2rem}p{margin:0 0 1em}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 1.5rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.85em 1.6em;border-radius:999px;font-family:var(--font-mono);font-size:.95rem;font-weight:500;white-space:nowrap;transition:transform .15s ease}.button:hover{text-decoration:none;transform:translateY(-1px)}.button-primary{background:var(--accent);color:var(--on-accent);box-shadow:0 10px 24px -10px var(--shadow)}.button-ghost{background:0 0;color:var(--text-primary);border:1.5px solid var(--card-border)}.button-small{padding:.7em 1.3em;font-size:.9rem}.app-store-badge{display:inline-block;line-height:0;margin:14px 0}.app-store-badge img{display:block;height:54px;width:auto}.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(14px);background:color-mix(in srgb,var(--bg-top) 78%,transparent);border-bottom:1px solid color-mix(in srgb,var(--card-border) 60%,transparent)}.site-header-row{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;row-gap:.6rem;padding-top:.9rem;padding-bottom:.9rem}.site-header-controls{display:flex;align-items:center;gap:1.2rem;margin-left:auto}.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border:none;background:0 0;color:var(--text-primary);cursor:pointer}.nav-toggle svg{width:22px;height:22px}.nav-toggle .icon-close{display:none}.nav-toggle.is-open .icon-menu{display:none}.nav-toggle.is-open .icon-close{display:block}.brand{display:flex;align-items:center;gap:.6rem;color:var(--text-primary)}.brand:hover{text-decoration:none}.brand-mark{border-radius:22%;display:block}.brand-word{font-family:var(--font-serif);font-weight:700;font-size:1.15rem;white-space:nowrap}.site-nav{display:flex;align-items:center;gap:1.6rem;font-family:var(--font-mono);font-size:.92rem}.site-nav a:not(.button){color:var(--text-secondary)}.site-nav a:not(.button):hover{color:var(--text-primary)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.lang-switch{display:inline-flex;align-items:center}.lang-select{font-family:var(--font-mono);font-size:.9rem;color:var(--text-secondary);background:0 0;border:1.5px solid var(--card-border);border-radius:999px;padding:.35em 1.6em .35em .9em;cursor:pointer}.lang-select:hover{color:var(--text-primary);border-color:var(--text-secondary)}.hero{position:relative;isolation:isolate;padding:4.5rem 0 3rem}.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient( 115deg,transparent 30%,color-mix(in srgb,var(--wash-sheen) 55%,transparent) 44%,transparent 58% )}.hero-row{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:3rem}.hero-copy{min-width:0}.eyebrow{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.08em;font-size:.9rem;color:var(--accent-ink);margin:0 0 .9em}.hero-sub{font-size:1.15rem;color:var(--text-secondary);max-width:34rem}.cta-row{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap;margin-top:1.6rem}.hero-media{display:flex;justify-content:center;min-width:0}.phone{position:relative;width:min(100%,300px);border-radius:42px;padding:14px;background:linear-gradient(160deg,#3a322b,#17120e);box-shadow:0 30px 60px -20px var(--shadow),inset 0 0 0 1px rgba(255,255,255,6%)}.phone img{display:block;width:100%;height:auto;border-radius:30px}.phone-hero{width:min(100%,320px)}.phone.phone-framed{background:0 0;padding:0;border-radius:0;box-shadow:none}.phone.phone-framed img{border-radius:0}.animation-frame{width:min(100%,420px);border-radius:20px;overflow:hidden;box-shadow:0 30px 60px -20px var(--shadow)}.animation-frame img{display:block;width:100%;height:auto}.animation-frame video{display:block;width:100%;height:auto;border-radius:3.9%/8.2%}.value-props{padding:2rem 0 4rem}.value-props-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem}.value-prop{min-width:0;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-md);padding:1.6rem}.value-prop-icon{display:inline-flex;align-items:center;justify-content:center;width:2.6rem;height:2.6rem;border-radius:12px;background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent);margin-bottom:.9rem}.value-prop-icon svg{width:1.4rem;height:1.4rem}.value-prop h3{margin-bottom:.35em}.value-prop p{color:var(--text-secondary);font-size:1rem;margin:0}.features{padding:2rem 0 5rem}.feature-row{display:grid;grid-template-columns:.85fr 1.15fr;align-items:center;gap:3.5rem;padding:3.5rem 0}.feature-row+.feature-row{border-top:1px solid color-mix(in srgb,var(--card-border) 70%,transparent)}.feature-row-reverse{grid-template-columns:1.15fr .85fr}.feature-row-reverse .feature-media{order:2}.feature-media{display:flex;justify-content:center;min-width:0}.feature-copy{min-width:0;max-width:30rem}.feature-copy p{color:var(--text-secondary);font-size:1.05rem}.trust{padding:4rem 0;background:color-mix(in srgb,var(--card-bg) 70%,transparent);border-top:1px solid var(--card-border);border-bottom:1px solid var(--card-border)}.trust-inner{max-width:42rem}.trust-inner p{color:var(--text-secondary);font-size:1.05rem}.trust-pills{list-style:none;display:flex;flex-wrap:wrap;gap:.7rem;padding:0;margin:1.6rem 0 0;font-family:var(--font-mono);font-size:.95rem}.trust-pills li{padding:.5em 1em;border-radius:999px;background:var(--card-bg);border:1px solid var(--card-border);color:var(--text-primary)}.devices{padding:4rem 0 5rem;text-align:center}.devices-sub{color:var(--text-secondary);font-size:1.05rem;max-width:38rem;margin:.6rem auto 0}.devices-row{--device-scale:0.65;display:flex;flex-wrap:nowrap;align-items:flex-end;justify-content:center;gap:clamp(.5rem,1.8vw,1.5rem);margin-top:3rem;overflow-x:auto;padding:1rem clamp(1rem,2vw,2rem)2rem;scrollbar-width:none;-ms-overflow-style:none}.devices-row::-webkit-scrollbar{display:none}.device-figure{margin:0;display:flex;flex:none;flex-direction:column;align-items:center;gap:1rem}.phone-small{width:calc(clamp(8.78rem,12.88vw,10.61rem) * var(--device-scale,1))}.phone-regular{width:calc(clamp(9.64rem,14.14vw,11.65rem) * var(--device-scale,1))}.phone-large{width:calc(clamp(10.5rem,15.4vw,12.69rem) * var(--device-scale,1))}.duo-pair{display:flex;align-items:flex-end;gap:clamp(.4rem,1.2vw,1rem)}.phone-duo-outer{width:calc(clamp(11.24rem,16.49vw,13.59rem) * var(--device-scale,1))}.phone-duo-inner{width:calc(clamp(22.09rem,32.4vw,26.7rem) * var(--device-scale,1))}.phone.tablet{width:calc(clamp(32.15rem,47.15vw,38.85rem) * var(--device-scale,1));border-radius:34px;padding:16px}.phone.tablet img{border-radius:22px}.phone.phone-framed.tablet{padding:0;border-radius:0;transform:translateY(calc(clamp(12.33px,1.1318vw,14.89px) * var(--device-scale,1)))}.final-cta{padding:5rem 0 6rem;text-align:center}.final-cta-inner h2{margin-bottom:1.2em}.site-footer{padding:2.5rem 0 3rem}.site-footer-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.2rem;font-size:.92rem;color:var(--text-secondary)}.footer-brand{display:flex;align-items:center;gap:.5rem;font-family:var(--font-mono);color:var(--text-primary)}.footer-nav{display:flex;flex-wrap:wrap;gap:1.2rem;font-family:var(--font-mono)}.footer-nav a{color:var(--text-secondary)}.footer-copy{width:100%;order:3;margin:0;font-size:.9rem}.footer-legal{width:100%;order:4;margin:0;font-size:.75rem;opacity:.7}.page{padding:4rem 0 6rem}.page-inner{max-width:44rem}.page-updated{font-family:var(--font-mono);color:var(--text-secondary);font-size:.9rem}.prose h2{margin-top:1.8em}.prose p,.prose li{color:var(--text-secondary);font-size:1.02rem}.legal-disclaimer{background:color-mix(in srgb,var(--coral) 12%,transparent);border:1px solid color-mix(in srgb,var(--coral) 35%,transparent);border-radius:var(--radius-sm);padding:1em 1.2em;color:var(--text-primary);font-size:.95rem}.faq-item{border-bottom:1px solid var(--card-border);padding:1.2rem 0}.faq-item summary{font-family:var(--font-serif);font-weight:700;font-size:1.08rem;cursor:pointer}.faq-item p{color:var(--text-secondary);margin:.8rem 0 0}.faq-contact{margin-top:2rem;color:var(--text-secondary)}@media(max-width:860px){.hero-row{grid-template-columns:1fr;text-align:center}.hero-sub{max-width:none;margin-inline:auto}.cta-row{justify-content:center}.value-props-grid{grid-template-columns:repeat(2,1fr)}.feature-row,.feature-row-reverse{grid-template-columns:1fr;text-align:center;padding:2.5rem 0}.feature-row-reverse .feature-media{order:0}.feature-copy{max-width:none;margin-inline:auto}.site-nav{gap:1rem}}@media(max-width:560px){.value-props-grid{grid-template-columns:1fr}.devices-row{justify-content:flex-start}h1{font-size:clamp(1.65rem,10vw - .6875rem,2rem)}h2{font-size:1.5rem}.site-header-row{padding-left:1rem;padding-right:1rem}.brand-word{display:none}.site-header-controls{gap:.7rem}.button-small{padding:.6em 1em}.nav-toggle{display:inline-flex;width:40px;height:40px}.site-nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:.9rem;padding:1.1rem 1.5rem 1.4rem;background:var(--bg-top);border-bottom:1px solid var(--card-border);box-shadow:0 16px 30px -20px var(--shadow);display:none}.site-nav.is-open{display:flex}.footer-nav{order:2}}