:root{--bg:#effdff;--bg-soft:#f7fcff;--text:#202226;--muted:#202226ad;--line:#20222617;--accent:#68c55b;--surface:#ffffffc2;--shadow-soft:0 18px 40px #14203014;--shadow-strong:0 28px 80px #1420301f;--header-height:104px;--viewport-height:100vh}@supports (height:100dvh){:root{--viewport-height:100dvh}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);min-width:320px;color:var(--text);margin:0;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}code{background:#2022260f;border-radius:999px;padding:.12rem .4rem}.page-shell{position:relative}.site-header{z-index:40;padding:22px 0 0;position:fixed;inset:0 0 auto}.site-header__inner{width:min(100% - 56px,1540px);margin:0 auto;padding:0;transition:box-shadow .22s,background .22s,transform .22s;position:relative}.site-header__row{justify-content:space-between;align-items:center;gap:28px;display:flex}.site-header.is-scrolled .site-header__inner{-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none;background:0 0;border-radius:0;padding:0}.brand{align-items:center;display:inline-flex}.brand__image{width:164px;height:auto}.site-nav{align-items:center;gap:clamp(1.25rem,2vw,2.8rem);display:flex}.site-nav a,.site-nav__download{color:#2022269e;padding:.3rem 0;font-size:1.15rem;font-weight:600;transition:color .18s;position:relative}.site-nav a:after{content:"";opacity:0;background:currentColor;border-radius:999px;height:3px;transition:opacity .18s,transform .18s;position:absolute;bottom:-.55rem;left:0;right:0;transform:scaleX(.5)}.site-nav a:hover,.site-nav a.is-active{color:var(--text)}.site-nav a:hover:after,.site-nav a.is-active:after{opacity:1;transform:scaleX(1)}.menu-toggle,.site-nav--mobile{display:none}.page-section{min-height:var(--viewport-height);position:relative;overflow:hidden}.page-section--hero,.page-section--search,.page-section--reading{background:#eafcff}.page-section--download{min-height:var(--viewport-height);background:#f7f7f7;flex-direction:column;display:flex}.section-background{z-index:0;pointer-events:none;opacity:.96;position:absolute;inset:0}.page-section--search .section-background{opacity:.92}.page-section--reading .section-background{opacity:.78}.section-background img{object-fit:cover;object-position:center}.section-shell{z-index:1;width:min(100% - 72px,1360px);padding:calc(var(--header-height) + 36px) 0 72px;margin:0 auto;position:relative}.section-shell--hero{min-height:var(--viewport-height);grid-template-columns:minmax(360px,535px) minmax(0,1fr);align-items:center;gap:clamp(2rem,4vw,4.5rem);display:grid}.section-shell--center{min-height:var(--viewport-height);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:1.75rem;display:flex}.section-shell--search,.section-shell--reading{min-height:var(--viewport-height);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.section-shell--download{min-height:var(--viewport-height);text-align:center;width:100%;max-width:none;padding-top:calc(var(--header-height) + 96px);padding-bottom:48px;grid-template-rows:minmax(0,1fr) auto;justify-items:center;row-gap:clamp(28px,4vh,56px);padding-inline:0;display:grid}.section-copy{max-width:660px}.section-copy--hero{text-align:center;flex-direction:column;justify-self:end;align-items:center;width:min(100%,660px);display:flex}.section-title{width:min(100%,660px);height:auto}.section-title--reading{width:min(100%,579px)}.section-text{color:#202226bd;max-width:30rem;margin:1.6rem 0 0;font-size:clamp(1.05rem,1.8vw,1.55rem);line-height:1.8}.section-text--hero{max-width:36rem;margin-top:1.05rem;font-size:clamp(1.12rem,1.5vw,1.45rem);line-height:1.75}.section-copy-image{width:min(100%,660px);height:auto}.cta-image{box-shadow:var(--shadow-soft);border-radius:18px;justify-content:center;align-items:center;margin-top:2rem;transition:transform .2s,box-shadow .2s;display:inline-flex;overflow:hidden}.cta-image:hover{box-shadow:var(--shadow-strong);transform:translateY(-3px)}.cta-image img{width:220px;height:auto}.download-status{max-width:28rem;color:var(--muted);margin:1rem 0 0;font-size:.95rem;line-height:1.8}.download-status:empty{display:none}.download-status--center{text-align:center;margin-inline:auto}.download-status.is-success{color:#2f7c36}.download-status.is-error{color:#b24f4f}.hero-device{filter:drop-shadow(0 42px 80px #2967792e);justify-self:end;width:min(100%,535px);animation:6s ease-in-out infinite device-float}.hero-device img{width:100%;height:auto}.search-bar-card{width:min(100%,868px)}.search-stage{width:min(100%,1220px);min-height:clamp(560px, calc(var(--viewport-height) - 220px), 680px);flex-direction:column;justify-content:center;align-items:center;display:flex;position:relative}.search-title-image,.search-copy-image{width:min(100%,660px);height:auto;margin:0 auto}.section-text--search{text-align:center;max-width:38rem;margin-top:1rem;font-size:clamp(1.06rem,1.45vw,1.35rem);line-height:1.72}.search-bar-card--search{margin:40px auto 0}.search-tags{width:100%;position:relative}.search-tag img{width:auto;height:auto}.search-desktop{display:none;position:relative}.search-mobile{display:none}@media (min-width:901px){.search-desktop{display:block}.section-shell--search{padding-top:calc(var(--header-height) + 18px);padding-bottom:24px}.search-stage{min-height:clamp(640px, calc(var(--viewport-height) - 170px), 740px)}.search-copy-image--desktop{width:660px}.search-tags--search{pointer-events:none;margin-top:0;position:absolute;inset:0}.search-tag{position:absolute}.search-tag--1{top:11.5%;left:2.8%}.search-tag--2{top:18.5%;right:4.2%}.search-tag--3{top:46%;left:-3%}.search-tag--4{top:50%;right:.8%}.search-tag--5{bottom:10%;right:15.5%}.search-tag--6{bottom:1.2%;left:17.8%}}.reading-lead{flex-direction:column;align-items:center;gap:1.35rem;display:flex}.reading-cta{color:#fff;letter-spacing:.02em;min-width:156px;min-height:52px;box-shadow:var(--shadow-soft);background:#232323;border-radius:12px;justify-content:center;align-items:center;padding:0 1.9rem;font-size:1rem;font-weight:700;transition:transform .2s,box-shadow .2s;display:inline-flex}.reading-cta:hover{box-shadow:var(--shadow-strong);transform:translateY(-3px)}.reading-carousel{width:100%;margin-top:1.75rem}.reading-carousel__viewport{width:100%}.reading-carousel__stage{width:min(100%,1080px);height:clamp(360px,36vw,620px);margin:0 auto;position:relative}.reading-card{cursor:pointer;width:clamp(160px,22vw,320px);opacity:var(--opacity);z-index:var(--z-index);transform:translate(-50%, -50%) translateX(calc(var(--offset) * clamp(88px, 13vw, 214px))) translateY(calc(var(--depth) * 24px)) scale(var(--scale));filter:saturate(.88)brightness(.95);background:0 0;border:0;padding:0;transition:transform .62s cubic-bezier(.22,1,.36,1),opacity .62s,filter .62s;position:absolute;top:50%;left:50%}.reading-card.is-active{filter:none}.reading-card img{border-radius:36px;width:100%;height:auto;box-shadow:0 34px 64px #1b2b3433}.reading-carousel__dots{justify-content:center;gap:.7rem;margin-top:1.6rem;display:flex}.reading-carousel__dot{background:#2022262e;border:0;border-radius:999px;width:.72rem;height:.72rem;padding:0;transition:transform .18s,background .18s}.reading-carousel__dot.is-active{background:var(--text);transform:scale(1.2)}@media (min-width:901px) and (max-height:900px){.site-header{padding-top:14px}.section-shell{padding-top:calc(var(--header-height) + 20px);padding-bottom:32px}.section-shell--hero{padding-top:calc(var(--header-height) + 20px);grid-template-columns:minmax(280px,460px) minmax(0,1fr);gap:clamp(1.5rem,2.4vw,3rem);padding-bottom:24px}.section-copy--hero,.section-title--hero{width:min(100%,560px)}.section-text--hero{max-width:31rem;margin-top:.8rem;font-size:clamp(1rem,1.1vw,1.22rem)}.cta-image--hero{margin-top:1.4rem}.hero-device{width:auto;max-width:460px}.hero-device img{width:auto;max-width:min(100%,460px);height:auto;max-height:calc(var(--viewport-height) - 260px)}.section-shell--reading{padding-top:calc(var(--header-height) + 18px);padding-bottom:24px}.reading-lead{gap:.95rem}.reading-carousel{margin-top:1rem}.reading-carousel__stage{height:clamp(300px, calc(var(--viewport-height) - 390px), 440px)}}.download-lead{flex-direction:column;align-self:center;align-items:center;gap:0;width:min(100% - 72px,1360px);margin:0 auto;display:flex}.section-text--download{color:var(--text);margin-top:1.8rem}.cta-image--download{margin-top:3rem}.review-strip-group{align-self:end;gap:62px;width:100%;margin-top:0;display:grid}.review-strip{width:100%;margin-top:0}.review-strip img{width:100%;height:auto}.site-footer{background:#fff;margin-top:auto;padding-top:44px;position:relative}.site-footer__visual{grid-template-columns:auto 1fr;align-items:center;column-gap:clamp(48px,6vw,108px);width:100%;margin:0;padding:34px clamp(28px,13vw,260px) 30px;display:grid}.site-footer__brand{letter-spacing:-.06em;color:var(--text);font-size:clamp(2.8rem,3vw,3.7rem);font-weight:700;line-height:1}.site-footer__meta{gap:8px;display:grid}.site-footer__row{color:#202226e6;flex-wrap:wrap;align-items:baseline;gap:0;font-size:clamp(.95rem,1vw,1.35rem);line-height:1.45;display:flex}.site-footer__label{flex:none}.site-footer__action{color:inherit;font:inherit;line-height:inherit;cursor:pointer;background:0 0;border:0;padding:0}.site-footer__action:hover{color:#111}.site-footer__action:focus-visible{outline-offset:4px;border-radius:10px;outline:2px solid #68c55ba6}.copy-toast{z-index:60;color:#fff;text-align:center;background:#202226e0;border-radius:999px;min-width:180px;max-width:min(100vw - 32px,320px);margin:0;padding:.8rem 1rem;font-size:.92rem;line-height:1.4;position:fixed;bottom:28px;left:50%;transform:translate(-50%);box-shadow:0 20px 48px #1418222e}.copy-toast:empty{display:none}.copy-toast.is-success{background:#2f7c36f0}.copy-toast.is-error{background:#b24f4ff0}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}[data-reveal]{opacity:1;transition:opacity .52s,transform .52s;transform:none}body.reveal-ready [data-reveal]{opacity:0;transform:translateY(28px)}body.reveal-ready [data-reveal].is-visible{opacity:1;transform:translateY(0)}@keyframes device-float{0%,to{transform:translateY(0)}50%{transform:translateY(-16px)}}@media (max-width:900px){:root{--header-height:84px}html{scroll-behavior:smooth}.site-header{padding-top:14px}.site-header__inner{-webkit-backdrop-filter:none;backdrop-filter:none;width:min(100% - 20px,560px);box-shadow:none;background:0 0;border-radius:0;gap:1rem;padding:14px 0}.site-header.is-scrolled .site-header__inner{border-radius:0;padding:14px 0}.brand__image{width:146px;height:auto}.site-nav--desktop{display:none}.menu-toggle{background:#20222612;border:0;border-radius:50%;place-content:center;width:44px;height:44px;padding:0;display:inline-grid}.menu-toggle span{background:var(--text);width:18px;height:2px;margin:0 auto;transition:transform .22s;display:block}.menu-toggle span+span{margin-top:6px}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(4px)rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-4px)rotate(-45deg)}.site-nav--mobile{display:none}body.nav-open .site-nav--mobile{background:#fffffffa;border-radius:22px;gap:.45rem;padding:.9rem;display:grid;position:absolute;top:calc(100% + 10px);left:0;right:0;box-shadow:0 18px 48px #18293d24}.site-nav--mobile a,.site-nav__download{border-radius:14px;padding:.85rem 1rem;font-size:1rem}.site-nav--mobile a:after{display:none}.site-nav__download{color:#fff;background:#232323;justify-content:center;display:inline-flex}.page-section{min-height:var(--viewport-height)}.section-shell{width:min(100% - 28px,560px);padding-top:calc(var(--header-height) + 34px);padding-bottom:72px}.section-shell--hero,.section-shell--center{min-height:var(--viewport-height)}.search-desktop{display:none}.search-mobile{display:block;position:relative}.section-shell--search{width:min(100% - 28px,560px);min-height:var(--viewport-height);padding-top:calc(var(--header-height) + 34px);justify-content:center;align-items:center;padding-bottom:72px;display:flex}.section-shell--hero{padding-top:calc(var(--header-height) + 16px);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:1rem;padding-bottom:28px;display:flex}.section-copy{flex-direction:column;align-items:center;max-width:none;display:flex}.section-copy--hero{justify-self:center;width:100%}.section-text{text-align:center;max-width:22rem;margin-top:1.1rem;font-size:1rem}.section-text--hero{max-width:18rem;margin-top:.75rem}.download-status{text-align:center;font-size:.88rem}.hero-device{justify-self:center;width:min(60vw,250px)}.section-title--hero{width:min(78vw,300px)}.cta-image--hero{margin-top:1.25rem}.section-background{opacity:.58}.page-section--reading .section-background{opacity:.5}.search-tags{gap:.8rem}.search-tag img{max-width:min(100%,86vw);height:auto}.search-stage{min-height:auto}.search-copy-image{width:min(88vw,360px)}.search-bar-card--search{margin-top:1.5rem}.search-tags--search{flex-wrap:wrap;justify-content:center;gap:.8rem;margin-top:1.15rem;display:flex}.search-tag{position:static}.reading-lead{gap:1.1rem}.reading-cta{min-width:168px;min-height:56px;padding:0 1.5rem;font-size:1rem}.reading-carousel__stage{height:340px}.reading-card{width:clamp(126px,38vw,220px);transform:translate(-50%, -50%) translateX(calc(var(--offset) * clamp(58px, 18vw, 104px))) translateY(calc(var(--depth) * 14px)) scale(var(--scale))}.reading-card img{border-radius:24px}.reading-carousel__dots{margin-top:1rem}.section-shell--download{min-height:var(--viewport-height);padding-bottom:24px;flex-direction:column;justify-items:stretch;row-gap:0;width:100%;max-width:none;padding-inline:0;display:flex}.download-lead{width:min(100% - 28px,560px)}.review-strip-group{gap:12px;width:100%;margin:0;padding:0 0 30px}.review-strip{box-shadow:var(--shadow-soft);border-radius:22px;overflow:hidden}.site-footer{padding-top:28px;padding-bottom:0}.site-footer__visual{grid-template-columns:1fr;gap:20px 0;width:100%;margin:0;padding:28px 20px 30px}.site-footer__brand{font-size:2.45rem}.site-footer__meta{gap:10px}.site-footer__row{font-size:.98rem;line-height:1.6}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:0s!important;animation:none!important}[data-reveal],body.reveal-ready [data-reveal]{opacity:1;transform:none}}