:root{--brand:#159a63;--brand-dark:#087a4a;--brand-soft:#e8f7f0;--ink:#17231d;--muted:#68756e;--line:#e1e9e5;--surface:#fff;--surface-2:#f6faf8;--shadow:0 18px 50px rgba(24,80,53,.1);--radius:18px;color-scheme:light}
:root.dark{--brand:#3ac484;--brand-dark:#6fdfa6;--brand-soft:#173c2d;--ink:#edf6f1;--muted:#a3b3aa;--line:#2d4137;--surface:#111d17;--surface-2:#0b1510;--shadow:0 18px 50px rgba(0,0,0,.28);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--surface);color:var(--ink);font:14px/1.65 "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif}button,input,select,textarea{font:inherit}button,a{transition:.2s ease}button{cursor:pointer}a{color:inherit;text-decoration:none}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.svg-defs{display:none}
.site-header{height:72px;position:sticky;top:0;z-index:30;display:flex;align-items:center;padding:0 max(28px,calc((100% - 1180px)/2));background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid color-mix(in srgb,var(--line) 80%,transparent)}
.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:39px;height:39px;border-radius:13px;display:grid;place-items:center;position:relative;overflow:hidden;background:linear-gradient(145deg,#28ba7b,var(--brand-dark));color:#fff;box-shadow:0 8px 20px rgba(21,154,99,.22)}.brand-mark span{font-size:20px;font-weight:800;transform:translateY(-1px)}.brand-mark i{position:absolute;width:12px;height:6px;right:3px;bottom:5px;border:2px solid #fff;border-left:0;border-top:0;transform:rotate(45deg);opacity:.9}.brand-copy{display:flex;flex-direction:column;line-height:1.2}.brand-copy strong{font-size:18px;letter-spacing:.06em}.brand-copy small{font-size:9px;color:var(--muted);letter-spacing:.12em;margin-top:3px}.desktop-nav{margin-left:70px;display:flex;gap:32px;height:100%;align-items:center}.desktop-nav a{height:100%;display:grid;place-items:center;color:var(--muted);font-weight:500;position:relative}.desktop-nav a:hover,.desktop-nav .active{color:var(--brand)}.desktop-nav .active:after{content:"";height:3px;width:20px;background:var(--brand);border-radius:3px;position:absolute;bottom:0}.header-actions{margin-left:auto;display:flex;gap:8px}.icon-button,.login-button{border:0;background:transparent;color:var(--ink);height:40px;display:flex;align-items:center;justify-content:center;border-radius:11px}.icon-button{width:40px}.icon-button:hover{background:var(--surface-2)}.login-button{padding:0 15px;gap:7px;background:var(--brand-soft);color:var(--brand-dark);font-weight:600}.menu-toggle{display:none}.mobile-menu{position:fixed;top:72px;left:0;right:0;z-index:40;padding:12px 22px 18px;display:grid;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.mobile-menu[hidden]{display:none}.mobile-menu a{padding:11px 4px;border-bottom:1px solid var(--line)}
.hero-section{min-height:480px;position:relative;overflow:hidden;background:linear-gradient(180deg,var(--surface-2),var(--surface));display:flex;align-items:center;justify-content:center;padding:68px 24px 84px}.hero-section:before{content:"";position:absolute;inset:0;background-image:radial-gradient(color-mix(in srgb,var(--brand) 17%,transparent) 1px,transparent 1px);background-size:24px 24px;mask-image:linear-gradient(to bottom,#000,transparent 78%)}.hero-glow{position:absolute;border-radius:50%;filter:blur(2px);background:color-mix(in srgb,var(--brand-soft) 86%,transparent)}.glow-one{width:360px;height:360px;left:-160px;top:-120px}.glow-two{width:300px;height:300px;right:-130px;bottom:-120px}.hero-content{position:relative;width:min(850px,100%);text-align:center}.eyebrow{color:var(--brand-dark);font-size:13px;font-weight:700;display:flex;justify-content:center;align-items:center;gap:8px}.eyebrow span{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px color-mix(in srgb,var(--brand) 12%,transparent)}.hero-content h1{font-size:clamp(34px,5vw,56px);line-height:1.2;margin:16px 0 12px;letter-spacing:-.04em}.hero-content h1 em{font-style:normal;color:var(--brand)}.hero-content>p{font-size:17px;color:var(--muted);margin:0 0 30px}.search-box{height:60px;width:min(720px,100%);margin:auto;display:flex;align-items:center;gap:12px;padding:7px 8px 7px 18px;background:var(--surface);border:1px solid var(--line);border-radius:17px;box-shadow:0 18px 50px rgba(21,100,67,.11)}.search-box:focus-within{border-color:var(--brand);box-shadow:0 18px 50px rgba(21,154,99,.18)}.search-box>svg{color:var(--muted);flex:none}.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:0;color:var(--ink);font-size:15px}.search-box kbd{font-size:11px;color:var(--muted);padding:3px 7px;border:1px solid var(--line);border-radius:6px;background:var(--surface-2)}.search-box button,.primary-button{border:0;border-radius:11px;background:var(--brand);color:#fff;font-weight:600}.search-box button{height:44px;padding:0 21px}.search-box button:hover,.primary-button:hover{background:var(--brand-dark);transform:translateY(-1px)}.search-suggestions{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:15px;color:var(--muted);font-size:12px}.search-suggestions button{border:0;background:transparent;padding:0;color:var(--muted)}.search-suggestions button:hover{color:var(--brand)}.privacy-note{display:inline-flex;align-items:center;gap:6px;margin-top:28px;color:var(--muted);font-size:12px}.privacy-note svg{width:15px;height:15px;color:var(--brand)}
.category-section,.tool-section{width:min(1180px,calc(100% - 48px));margin:auto}.category-section{padding:82px 0 55px}.section-heading span{color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.1em}.section-heading h2{font-size:30px;line-height:1.3;margin:5px 0}.section-heading p{margin:0;color:var(--muted)}.section-heading.centered{text-align:center}.category-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:12px;margin-top:35px}.category-card{border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:20px 7px 16px;display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--ink)}.category-card:hover,.category-card.active{transform:translateY(-4px);border-color:color-mix(in srgb,var(--cat) 45%,var(--line));box-shadow:0 12px 30px color-mix(in srgb,var(--cat) 13%,transparent)}.category-card .category-icon{width:45px;height:45px;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--cat) 12%,var(--surface));color:var(--cat);font-size:22px}.category-card strong{font-size:13px}.category-card small{font-size:10px;color:var(--muted)}
.tool-section{padding:45px 0 90px;scroll-margin-top:70px}.tool-heading{display:flex;justify-content:space-between;align-items:end}.text-button{border:0;background:transparent;color:var(--brand);display:flex;align-items:center;gap:6px;padding:7px}.text-button svg{width:16px}.filter-row{display:flex;gap:8px;overflow:auto;margin:28px 0 22px;padding-bottom:4px;scrollbar-width:none}.filter-row::-webkit-scrollbar{display:none}.filter-button{white-space:nowrap;border:1px solid var(--line);background:var(--surface);color:var(--muted);padding:8px 16px;border-radius:100px}.filter-button:hover,.filter-button.active{background:var(--brand);border-color:var(--brand);color:#fff}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tool-card{min-height:152px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--surface);position:relative;cursor:pointer;display:flex;flex-direction:column}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}.tool-card-top{display:flex;justify-content:space-between;align-items:start}.tool-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand-dark);font-size:21px}.tool-icon svg{width:21px;height:21px}.favorite-button{width:32px;height:32px;display:grid;place-items:center;border:0;border-radius:9px;background:transparent;color:#a3afa8}.favorite-button:hover{background:var(--surface-2);color:#f1a72d}.favorite-button.active{color:#f1a72d}.favorite-button.active svg{fill:currentColor}.tool-card h3{margin:14px 0 4px;font-size:15px}.tool-card p{margin:0;color:var(--muted);font-size:12px}.tool-tags{margin-top:auto;padding-top:12px;display:flex;gap:6px}.tool-tags span{font-size:10px;color:var(--brand-dark);background:var(--brand-soft);border-radius:8px;padding:2px 7px}.empty-state{text-align:center;padding:70px 20px;color:var(--muted)}.empty-state div{font-size:18px;color:var(--ink);font-weight:700}.empty-state p{margin:6px 0 18px}.empty-state button{border:0;padding:10px 16px;border-radius:10px;background:var(--brand);color:#fff}
.feature-section{padding:76px max(24px,calc((100% - 1080px)/2));background:linear-gradient(135deg,#09281c,#103d2b);color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.feature-copy .eyebrow{justify-content:flex-start;color:#73d7a5}.feature-copy h2{font-size:33px;line-height:1.35;margin:15px 0}.feature-copy>p{color:#b8cfc4;font-size:15px}.feature-copy ul{list-style:none;padding:0;margin:25px 0;display:grid;gap:10px;color:#d9e8e1}.feature-copy li{display:flex;gap:9px;align-items:center}.feature-copy li svg{width:17px;color:#73d7a5}.primary-button{padding:13px 18px;display:flex;align-items:center;gap:8px}.primary-button svg{width:17px}.feature-demo{background:#fff;color:#17231d;border-radius:22px;padding:23px;box-shadow:0 28px 70px rgba(0,0,0,.25);transform:rotate(1deg)}.demo-top,.demo-top>div{display:flex;align-items:center;justify-content:space-between}.demo-top>div{gap:11px}.demo-top strong,.demo-top small{display:block}.demo-top small{font-size:10px;color:#68756e}.status-dot{font-size:10px;color:#159a63;background:#e8f7f0;border-radius:8px;padding:4px 8px}.feature-demo>label{display:block;font-size:11px;color:#68756e;margin:21px 0 6px}.fake-input{padding:11px 13px;border:1px solid #dfe7e3;border-radius:10px;font-family:monospace}.fake-input b{float:right;color:#159a63}.demo-result{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:13px 0}.demo-result div{background:#f6faf8;padding:10px;border-radius:10px}.demo-result small,.demo-result strong{display:block}.demo-result small{font-size:9px;color:#68756e}.demo-result strong{font:600 13px/1.5 monospace}.feature-demo>button{width:100%;border:0;border-radius:10px;padding:11px;background:#159a63;color:#fff;font-weight:600}
.trust-section{width:min(1060px,calc(100% - 48px));margin:68px auto;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.trust-section article{display:flex;gap:14px;align-items:center}.trust-section article>span{width:48px;height:48px;flex:none;display:grid;place-items:center;border-radius:15px;background:var(--brand-soft);color:var(--brand)}.trust-section strong{font-size:15px}.trust-section p{margin:2px 0 0;color:var(--muted);font-size:12px}
footer{border-top:1px solid var(--line);background:var(--surface-2);padding:50px max(24px,calc((100% - 1180px)/2)) 24px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;position:relative}.footer-brand p{color:var(--muted);font-size:12px}.footer-brand~div{display:flex;flex-direction:column;gap:8px}.footer-brand~div strong{margin-bottom:5px}.footer-brand~div a,.footer-contact small{color:var(--muted);font-size:12px}.footer-brand~div a:hover{color:var(--brand)}.mini-code{width:74px;height:74px;border-radius:7px;background:repeating-linear-gradient(45deg,var(--ink) 0 3px,var(--surface) 3px 6px);display:grid!important;place-items:center;margin-bottom:3px}.mini-code span{background:var(--surface);font-size:9px;padding:3px;color:var(--ink)}.copyright{grid-column:1/-1;border-top:1px solid var(--line);padding-top:18px;margin:10px 0 0;text-align:center;color:var(--muted);font-size:11px}
.modal-backdrop{position:fixed;z-index:100;inset:0;padding:24px;display:grid;place-items:center;background:rgba(4,16,10,.65);backdrop-filter:blur(5px)}.modal-backdrop[hidden]{display:none}.tool-modal{width:min(680px,100%);max-height:min(760px,calc(100vh - 48px));overflow:auto;border-radius:22px;background:var(--surface);box-shadow:0 25px 80px rgba(0,0,0,.3)}.tool-modal>header{position:sticky;top:0;z-index:2;display:flex;justify-content:space-between;align-items:start;padding:22px;border-bottom:1px solid var(--line);background:var(--surface)}.tool-modal>header>div{display:flex;gap:12px}.tool-modal h2{font-size:20px;margin:0}.tool-modal header p{margin:2px 0 0;color:var(--muted);font-size:12px}.modal-body{padding:24px}.tool-form{display:grid;gap:16px}.field-group{display:grid;gap:6px}.field-group label{font-weight:600;font-size:12px}.field-group input,.field-group select,.field-group textarea{width:100%;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--ink);padding:11px 12px;outline:0}.field-group textarea{min-height:150px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.field-group input:focus,.field-group select:focus,.field-group textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 12%,transparent)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.action-row{display:flex;gap:9px;flex-wrap:wrap}.action-row button{border:1px solid var(--line);border-radius:10px;padding:10px 15px;background:var(--surface);color:var(--ink)}.action-row .main-action{background:var(--brand);border-color:var(--brand);color:#fff}.result-box{padding:16px;border-radius:13px;background:var(--surface-2);border:1px solid var(--line)}.result-box small{display:block;color:var(--muted);margin-bottom:5px}.result-box strong{font-size:20px;color:var(--brand-dark)}.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.result-grid div{padding:12px;border-radius:10px;background:var(--surface)}.result-grid span,.result-grid b{display:block}.result-grid span{font-size:10px;color:var(--muted)}.result-grid b{font-size:13px;margin-top:2px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.tool-note{font-size:11px;color:var(--muted);display:flex;gap:6px}.toast{position:fixed;z-index:120;bottom:28px;left:50%;transform:translate(-50%,20px);padding:10px 17px;border-radius:10px;background:var(--ink);color:var(--surface);opacity:0;pointer-events:none;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:960px){.desktop-nav{margin-left:35px;gap:18px}.category-grid{grid-template-columns:repeat(4,1fr)}.tool-grid{grid-template-columns:repeat(3,1fr)}.feature-section{gap:35px}.trust-section{gap:18px}}
@media(max-width:720px){.site-header{height:64px;padding:0 18px}.brand-mark{width:35px;height:35px}.brand-copy strong{font-size:16px}.brand-copy small{display:none}.desktop-nav{display:none}.menu-toggle{display:flex}.login-button{padding:0;width:40px}.login-button span{display:none}.mobile-menu{top:64px}.hero-section{min-height:430px;padding:54px 18px 70px}.hero-content h1{font-size:36px}.hero-content>p{font-size:14px}.search-box{height:55px;padding-left:14px}.search-box kbd,.search-box button{display:none}.category-section,.tool-section{width:min(100% - 32px,1180px)}.category-section{padding:62px 0 30px}.section-heading h2{font-size:25px}.category-grid{grid-template-columns:repeat(4,1fr);gap:8px}.category-card{padding:15px 3px 12px}.category-card .category-icon{width:40px;height:40px}.category-card small{display:none}.tool-heading{align-items:start}.tool-heading .text-button{display:none}.tool-section{padding-top:42px}.tool-grid{grid-template-columns:repeat(2,1fr);gap:10px}.tool-card{min-height:145px;padding:14px}.tool-card p{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.feature-section{grid-template-columns:1fr;padding:58px 22px;gap:38px}.feature-copy h2{font-size:27px}.feature-demo{transform:none}.trust-section{grid-template-columns:1fr;margin:45px auto;gap:22px}footer{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-contact{display:none!important}.modal-backdrop{padding:12px}.tool-modal{max-height:calc(100vh - 24px);border-radius:18px}.form-row,.result-grid{grid-template-columns:1fr}}
@media(max-width:400px){.category-grid{grid-template-columns:repeat(4,1fr)}.category-card strong{font-size:11px}.tool-grid{grid-template-columns:1fr}.hero-content h1{font-size:32px}.search-suggestions button:nth-of-type(n+3){display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}