:root{--brand:#ff3b30;--brand-dark:#d93128;--on-brand:#fff;--brand-container:#ffe5e3;--on-brand-container:#8a1a12;--ink:#15161a;--ink-2:#1e1f24;--ink-3:#2a2b31;--bg-page:#f7f8fa;--bg-card:#fff;--bg-variant:#f1f2f4;--text-1:#392626;--text-2:#6e7178;--text-3:#a4b4c1;--outline:#e4e7eb;--outline-2:#d8dbe0;--r-input:10px;--r-button:12px;--r-card:16px;--r-xl:20px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg-page);color:var(--text-1);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Inter,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.65}.container{max-width:1120px;margin:0 auto;padding:0 24px}.icon{stroke:currentColor;fill:none;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:22px;height:22px}header{z-index:50;-webkit-backdrop-filter:blur(14px);background:#15161ac7;border-bottom:1px solid #ffffff0f;position:sticky;top:0}.nav{align-items:center;gap:28px;height:64px;display:flex}.logo{color:#fff;letter-spacing:.3px;align-items:center;gap:10px;font-size:16.5px;font-weight:650;display:flex}.logo-mark{background:var(--brand);color:#fff;border-radius:9px;justify-content:center;align-items:center;width:30px;height:30px;font-size:15px;font-weight:800;display:flex;box-shadow:0 2px 12px #ff3b3073}.nav-links{gap:24px;font-size:14px;display:flex}.nav-links a{color:#ffffffa6;text-decoration:none;transition:color .15s}.nav-links a:hover{color:#fff}.nav-right{align-items:center;gap:18px;margin-left:auto;display:flex}.nav-dl{color:#ffffffa6;font-size:14px;text-decoration:none}.nav-dl:hover{color:#fff}.btn-login{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff3;border-radius:999px;height:36px;padding:0 20px;font-size:13.5px;font-weight:500;transition:all .15s}.btn-login:hover{color:var(--ink);background:#fff;border-color:#fff}.hero{background:var(--ink);color:#fff;padding:88px 0 0;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background:radial-gradient(closest-side,#ff3b3038,#0000 70%);width:640px;height:640px;position:absolute;top:-240px;right:-140px}.hero:after{content:"";pointer-events:none;background:radial-gradient(closest-side,#ff3b3014,#0000 70%);width:600px;height:600px;position:absolute;bottom:-300px;left:-200px}.hero-inner{text-align:center;max-width:720px;margin:0 auto;position:relative}.hero-kicker{letter-spacing:2.5px;color:var(--brand);text-transform:uppercase;align-items:center;gap:8px;margin-bottom:22px;font-size:12.5px;font-weight:600;display:inline-flex}.hero-kicker:before,.hero-kicker:after{content:"";background:#ff3b3080;width:24px;height:1px}.hero h1{letter-spacing:-.5px;margin-bottom:18px;font-size:46px;font-weight:700;line-height:1.22}.hero h1 em{color:var(--brand);font-style:normal}.hero-sub{color:#ffffff8c;margin-bottom:40px;font-size:16px}.m-only{display:none}.hero-search{background:#fff;border-radius:16px;align-items:center;max-width:580px;height:58px;margin:0 auto;padding:0 8px 0 22px;display:flex;box-shadow:0 18px 50px -12px #0000008c}.hero-search .icon{color:var(--text-3);flex-shrink:0}.hero-search input{color:var(--text-1);background:0 0;border:none;outline:none;flex:1;min-width:0;padding:0 14px;font-size:15.5px}.hero-search button{background:var(--brand);color:#fff;cursor:pointer;border:none;border-radius:11px;height:42px;padding:0 26px;font-size:14.5px;font-weight:600;transition:background .15s}.hero-search button:hover{background:var(--brand-dark)}.hero-hot{color:#ffffff61;margin-top:18px;font-size:13px}.hero-hot a{color:#ffffffa6;cursor:pointer;margin:0 7px;text-decoration:none}.hero-hot a:hover{color:var(--brand)}.hero-stats{border-top:1px solid #ffffff14;justify-content:center;gap:0;margin-top:64px;padding:26px 0 30px;display:flex;position:relative}.stat{text-align:center;padding:0 44px}.stat+.stat{border-left:1px solid #ffffff14}.stat b{letter-spacing:-.5px;font-size:26px;font-weight:700;display:block}.stat b i{color:var(--brand);font-style:normal}.stat span{color:#ffffff6b;letter-spacing:1px;font-size:12.5px}.section{padding-top:64px}.sec-head{align-items:baseline;gap:14px;margin-bottom:22px;display:flex}.sec-kicker{letter-spacing:2px;color:var(--brand);text-transform:uppercase;font-size:12px;font-weight:600}.sec-head h2{letter-spacing:-.3px;font-size:22px;font-weight:650}.sec-head .more{color:var(--text-2);cursor:pointer;margin-left:auto;font-size:13.5px;text-decoration:none}.sec-head .more:hover{color:var(--brand)}.featured{grid-template-columns:repeat(4,1fr);gap:16px;display:grid}.feat-card{background:var(--bg-card);border:1px solid var(--outline);border-radius:var(--r-xl);cursor:pointer;padding:26px 22px 22px;transition:all .2s;position:relative;overflow:hidden}.feat-card:hover{border-color:#ff3b3059;transform:translateY(-3px);box-shadow:0 16px 40px -16px #3926262e}.feat-icon{background:var(--brand-container);width:46px;height:46px;color:var(--brand-dark);border-radius:13px;justify-content:center;align-items:center;margin-bottom:18px;display:flex}.feat-icon .icon{width:24px;height:24px}.feat-card h3{margin-bottom:5px;font-size:16px;font-weight:600}.feat-card p{color:var(--text-2);font-size:13px;line-height:1.55}.feat-arrow{color:var(--text-3);opacity:0;transition:all .2s;position:absolute;top:26px;right:20px;transform:translate(-6px)}.feat-card:hover .feat-arrow{opacity:1;color:var(--brand);transform:none}.cat-bar{background:var(--bg-card);border:1px solid var(--outline);scrollbar-width:none;border-radius:14px;gap:8px;width:fit-content;max-width:100%;margin:56px 0 0;padding:6px;display:flex;overflow-x:auto}.cat-bar::-webkit-scrollbar{display:none}.cat-bar a{color:var(--text-2);white-space:nowrap;cursor:pointer;border-radius:9px;padding:8px 18px;font-size:14px;text-decoration:none;transition:all .15s}.cat-bar a.active,.cat-bar a:hover{background:var(--ink);color:#fff}.tools{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}.t-card{background:var(--bg-card);border:1px solid var(--outline);cursor:pointer;border-radius:14px;align-items:center;gap:13px;padding:15px 16px;transition:all .18s;display:flex;position:relative}.t-card:hover{border-color:#ff3b3066;box-shadow:0 10px 28px -12px #39262629}.t-icon{background:var(--bg-variant);width:40px;height:40px;color:var(--text-2);border-radius:11px;flex-shrink:0;justify-content:center;align-items:center;transition:all .18s;display:flex}.t-icon .icon{width:20px;height:20px}.t-card:hover .t-icon{background:var(--brand-container);color:var(--brand-dark)}.t-card b{font-size:14px;font-weight:550;line-height:1.3;display:block}.t-card span{color:var(--text-3);text-overflow:ellipsis;white-space:nowrap;margin-top:2px;font-size:12px;display:block;overflow:hidden}.t-tag{letter-spacing:.3px;border-radius:5px;padding:1px 7px;font-size:10.5px;position:absolute;top:10px;right:12px}.t-tag.app{background:var(--bg-variant);color:var(--text-2)}.t-tag.vip{background:var(--brand);color:#fff}.t-card.app-only{opacity:.8}.t-card.app-only:hover{opacity:1}.values{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:72px;display:grid}.value{text-align:center;border-radius:var(--r-xl);background:var(--bg-card);border:1px solid var(--outline);padding:34px 28px}.value .v-icon{background:var(--brand-container);width:44px;height:44px;color:var(--brand-dark);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 16px;display:flex}.value b{margin-bottom:6px;font-size:15.5px;font-weight:600;display:block}.value p{color:var(--text-2);font-size:13px}.app-band{background:var(--ink);color:#fff;border-radius:24px;align-items:center;gap:40px;margin-top:72px;padding:52px 56px;display:flex;position:relative;overflow:hidden}.app-band:before{content:"";background:radial-gradient(closest-side,#ff3b304d,#0000 70%);width:420px;height:420px;position:absolute;top:-120px;right:-120px}.app-band-text{flex:1;position:relative}.app-band-text .sec-kicker{margin-bottom:10px;display:block}.app-band-text h2{letter-spacing:-.4px;margin-bottom:10px;font-size:26px;font-weight:700}.app-band-text p{color:#ffffff8c;max-width:460px;margin-bottom:26px;font-size:14.5px}.app-btns{gap:12px;display:flex}.btn-store{cursor:pointer;border:none;border-radius:13px;align-items:center;gap:8px;height:46px;padding:0 24px;font-size:14px;font-weight:600;transition:all .15s;display:inline-flex}.btn-store.primary{background:var(--brand);color:#fff}.btn-store.primary:hover{background:var(--brand-dark)}.btn-store.ghost{color:#fff;background:0 0;border:1px solid #ffffff40}.btn-store.ghost:hover{border-color:#fff}.app-qr{width:132px;height:132px;color:var(--ink);background:#fff;border-radius:16px;flex-shrink:0;justify-content:center;align-items:center;display:flex;position:relative}.app-qr:after{content:attr(data-label);text-align:center;color:#ffffff73;font-size:12px;position:absolute;bottom:-26px;left:0;right:0}.app-qr .icon{stroke-width:1.2px;width:72px;height:72px}footer{background:var(--ink);color:#ffffff8c;margin-top:88px;font-size:13.5px}.foot-main{grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px;display:grid}.foot-brand .logo{margin-bottom:14px}.foot-brand p{color:#fff6;max-width:280px;font-size:13px}.foot-col h5{color:#fff;letter-spacing:.5px;margin-bottom:14px;font-size:13.5px;font-weight:600}.foot-col a{color:#ffffff73;padding:4px 0;text-decoration:none;display:block}.foot-col a:hover{color:#fff}.foot-bar{color:#ffffff59;border-top:1px solid #ffffff14;gap:20px;padding:20px 0;font-size:12.5px;display:flex}.foot-bar span:last-child{margin-left:auto}.tool-page{background:var(--bg-page);min-height:70vh}.breadcrumb{color:var(--text-3);padding:22px 0 14px;font-size:13px}.breadcrumb a{color:var(--text-2);cursor:pointer;text-decoration:none}.breadcrumb a:hover{color:var(--brand)}.tool-layout{grid-template-columns:1fr 300px;align-items:start;gap:20px;padding-bottom:56px;display:grid}.panel{background:var(--bg-card);border:1px solid var(--outline);border-radius:var(--r-xl);padding:30px}.tool-title{margin-bottom:4px;font-size:21px;font-weight:650}.tool-sub{color:var(--text-3);margin-bottom:22px;font-size:13px}.seg{background:var(--bg-variant);border-radius:11px;margin-bottom:16px;padding:4px;display:inline-flex}.seg button{color:var(--text-2);cursor:pointer;background:0 0;border:none;border-radius:8px;padding:7px 26px;font-size:14px}.seg button.active{color:var(--text-1);background:#fff;font-weight:600;box-shadow:0 1px 4px #3926261a}textarea{border:1px solid var(--outline-2);border-radius:var(--r-input);resize:vertical;outline:none;width:100%;min-height:140px;padding:13px 15px;font-family:inherit;font-size:14px}textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px #ff3b301f}.result-card{background:var(--bg-page);border-radius:var(--r-input);margin-top:14px;padding:15px}.result-head{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.result-head b{font-size:14px}.btn-copy{color:var(--brand);cursor:pointer;background:0 0;border:none;font-size:13px;font-weight:600}.result-body{word-break:break-all;min-height:22px;font-size:14px}.side-card{background:var(--bg-card);border:1px solid var(--outline);border-radius:var(--r-card);margin-bottom:14px;padding:20px}.side-card h4{margin-bottom:10px;font-size:14px}.side-link{color:var(--text-2);cursor:pointer;padding:5px 0;font-size:13.5px;text-decoration:none;display:block}.side-link:hover{color:var(--brand)}.app-banner{background:var(--ink);border-radius:var(--r-card);text-align:center;color:#fff;padding:22px}.app-banner b{margin-bottom:4px;font-size:14.5px;display:block}.app-banner span{color:#ffffff80;font-size:12px}.btn-dl{background:var(--brand);color:#fff;cursor:pointer;border:none;border-radius:11px;margin-top:14px;padding:10px 30px;font-size:14px;font-weight:600;display:inline-block}.btn-dl:hover{background:var(--brand-dark)}.landing{text-align:center;padding:64px 24px}.landing .feat-icon{border-radius:18px;width:64px;height:64px;margin:0 auto 18px}.landing .feat-icon .icon{width:30px;height:30px}.landing h2{margin-bottom:10px;font-size:23px}.landing p{color:var(--text-2);max-width:440px;margin:0 auto 6px;font-size:14px}.landing .hint{color:var(--text-3);margin-top:12px;font-size:12px}@media (max-width:980px){.featured,.tools{grid-template-columns:repeat(2,1fr)}.values{grid-template-columns:1fr}.foot-main{grid-template-columns:1fr 1fr}}@media (max-width:680px){.nav{gap:14px;height:56px}.nav-links,.nav-dl{display:none}.hero{padding-top:56px}.hero h1{font-size:30px}.hero-sub{margin-bottom:28px;font-size:14px}.hero-search{border-radius:14px;height:52px}.hero-search button{padding:0 18px}.m-only{display:inline}.d-only{display:none}.hero-sub{line-height:1.7}.hero-stats{grid-template-columns:repeat(3,1fr);margin-top:40px;display:grid}.stat{padding:0 6px}.stat b{font-size:19px}.stat span{letter-spacing:.2px;font-size:11px}.featured{grid-template-columns:1fr 1fr;gap:10px}.feat-card{padding:18px 16px 16px}.tools{grid-template-columns:1fr 1fr;gap:10px}.t-card{gap:10px;padding:12px}.app-band{text-align:center;flex-direction:column;gap:28px;padding:36px 24px}.app-btns{justify-content:center}.tool-layout{grid-template-columns:1fr}.section{padding-top:44px}}