:root{--teal:#0a998a;--teal-dark:#008575;--ink:#122f43;--muted:#637789;--line:#dce5eb;--soft:#f1f6f9;--mint:#e5faf4;--radius:14px;--wrap:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--ink);background:#fff;font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #45bcae;outline-offset:5px}img{max-width:100%;height:auto;display:block}h1,h2,h3,p,figure{margin:0}button,a{touch-action:manipulation}.wrap{width:min(var(--wrap),calc(100% - 80px));margin-inline:auto}.skip{position:fixed;top:-70px;left:16px;padding:10px 18px;background:var(--ink);color:white;z-index:20}.skip:focus{top:8px}.site-header{position:sticky;top:0;z-index:10;background:#fffffff5;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;font-size:27px;font-weight:800;letter-spacing:-1px}.site-header nav{display:flex;gap:34px;font-size:17px;font-weight:550}.site-header nav a:hover,.footer a:hover,.text-button:hover{color:var(--teal)}.header-actions{display:flex;align-items:center;gap:22px}.login-link{font-weight:600;white-space:nowrap}.button{display:inline-flex;gap:16px;align-items:center;justify-content:center;min-height:55px;border:1px solid transparent;border-radius:12px;padding:12px 25px;font-weight:650;font-size:18px;line-height:1.4;white-space:nowrap;transition:background .18s,transform .18s,box-shadow .18s}.button:hover{transform:translateY(-1px)}.primary{background:var(--teal);color:#fff;box-shadow:0 4px 10px #0a998a0d}.primary:hover{background:var(--teal-dark);box-shadow:0 5px 16px #0a998a26}.secondary{border-color:#a5b5c0;background:white}.secondary:hover{background:var(--soft)}.button.small{min-height:44px;padding:10px 20px;font-size:16px}.menu-toggle{display:none}.hero{display:grid;grid-template-columns:1fr 1.08fr;align-items:center;min-height:660px;padding-block:48px 60px;gap:0}.hero-copy{position:relative;z-index:1}.hero h1{font-size:clamp(42px,4.6vw,66px);line-height:1.33;font-weight:800;letter-spacing:-2px}.hero h1 em{font-style:normal;color:var(--teal)}.hero-description{margin-top:26px;max-width:530px;font-size:20px;line-height:1.85;color:#4c6679}.hero-actions{display:flex;gap:16px;margin-top:35px}.play{border:2px solid var(--ink);width:25px;height:25px;border-radius:50%;font-size:12px;display:inline-flex;align-items:center;justify-content:center;padding-left:2px}.trial-note{font-size:14px;color:var(--muted);margin-top:19px}.hero-art{width:110%;margin-left:-6%;pointer-events:none}.hero-art img{width:100%}.platform-strip{display:flex;align-items:center;justify-content:space-between;gap:20px;border-block:1px solid var(--line);padding-block:23px}.platform-strip>strong{font-size:20px}.platforms{display:flex;gap:38px;align-items:center}.platforms>span{display:flex;gap:12px;align-items:center;font-weight:650;font-size:20px}.platforms img,.sample-platforms img{border-radius:8px}.platform-strip>a{color:var(--muted);font-size:15px}.features{padding-block:80px 76px}.section-heading{display:flex;gap:24px;align-items:center;justify-content:space-between}h2{font-size:32px;line-height:1.45;letter-spacing:-.7px;font-weight:750}.section-heading>p{font-size:17px;color:var(--muted)}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:42px}.feature-grid article{padding:0 26px;border-left:1px solid var(--line)}.feature-grid article:first-child{padding-left:0;border:0}.feature-grid article:last-child{padding-right:0}.feature-icon{display:block;width:44px;height:44px;margin-bottom:18px;color:var(--teal)}.feature-icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.feature-grid h3{font-size:18px;line-height:1.5;margin-bottom:10px}.feature-grid p{font-size:15px;color:var(--muted);line-height:1.8}.how{background:var(--soft);padding-block:64px 30px}.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin:36px 0 30px;padding:0}.step-title{display:flex;align-items:center;gap:15px}.step-title>span{font-size:35px;line-height:1.2;font-weight:750;letter-spacing:-1px;color:var(--teal)}.step-title h3{font-size:21px}.steps li>p{margin:12px 0 22px;color:var(--muted);font-size:15px}.example{padding:20px;background:white;border:1px solid #cad8e2;border-radius:12px;min-height:175px;box-shadow:0 3px 5px #23495b02}.example-label{display:block;font-size:14px;color:var(--muted);margin-bottom:15px}.keyword-example{display:flex;gap:10px;padding:10px;border:1px solid var(--line);border-radius:9px}.keyword-example b{padding:4px 10px;border-radius:6px;background:#e3f3ef;font-size:16px;font-weight:550;white-space:nowrap}.example-note{display:block;font-size:12px;color:var(--muted);margin-top:12px}.sample-platforms{display:flex;gap:22px;padding-bottom:17px;border-bottom:1px solid var(--line)}.sample-platforms>span{display:flex;align-items:center;gap:7px;font-size:15px}.sample-plan{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:13px;font-size:13px}.sample-on{height:21px;width:37px;border-radius:20px;background:#69cdbc;padding:3px;flex-shrink:0}.sample-on:after{content:"";display:block;width:15px;height:15px;border-radius:50%;margin-left:auto;background:white}.comment-example{display:flex;gap:9px;align-items:center;margin-top:9px;font-size:15px}.comment-example>span:last-child{border-radius:10px;background:#f0f3f6;padding:8px 10px}.avatar{width:27px;height:27px;flex-shrink:0;background:#e4ebf0;color:#9eb0bf;border-radius:50%;display:grid;place-items:center;font-size:13px}.sample-original{display:block;color:var(--teal);font-size:14px;margin:12px 0 0 36px}.notification-note{display:flex;align-items:center;gap:16px;border-top:1px solid #d9e3ea;padding-top:24px;color:var(--muted);font-size:15px}.notification-note>span{font-size:29px;color:var(--teal)}.notification-note>a{margin-left:auto;color:var(--teal);white-space:nowrap}.pricing{padding-block:76px 60px}.pricing-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;margin-top:32px;align-items:center}.trial{background:linear-gradient(120deg,#e5faf4,#f0fcf8);border-radius:20px;padding:32px 38px}.trial h3{font-size:24px}.trial-amount{display:block;font-size:62px;line-height:1.2;color:var(--teal);margin:8px 0 12px;font-weight:800;letter-spacing:-2px}.trial p{color:#547484;font-size:17px;line-height:1.8;margin-bottom:24px}.price-points>p{display:flex;align-items:center;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.price-points>p:first-child{padding-top:0}.price-points>p:nth-last-child(2){border:0}.price-points>p>span{color:var(--teal);font-size:14px;font-weight:700}.price-points strong{font-size:18px;font-weight:550}.price-points small{color:var(--muted);font-size:13px;display:block;line-height:1.8}.faq{display:grid;grid-template-columns:1fr 2.5fr;gap:50px;padding-block:36px 60px;border-top:1px solid var(--line)}.faq>div>p{font-size:14px;margin-top:15px;color:var(--muted)}.text-button{border:0;padding:0;background:none;color:inherit;font-size:inherit}.faq .text-button{color:var(--teal);display:block;margin-top:4px}.questions details{border:1px solid #d2dee6;border-radius:10px;margin-bottom:12px;overflow:hidden}.questions summary{font-weight:600;font-size:16px;cursor:pointer;padding:15px 20px;display:flex;gap:12px;align-items:center;justify-content:space-between;list-style:none}.questions summary::-webkit-details-marker{display:none}.questions summary:after{content:"+";font-size:23px;font-weight:400;color:var(--teal);line-height:1}.questions details[open] summary{background:#e9faf5}.questions details[open] summary:after{content:"−"}.questions details p{padding:15px 20px;color:var(--muted);font-size:15px;line-height:1.85}.closing{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:32px 40px;background:linear-gradient(115deg,#f1faf7,#e0f7f1);border-radius:18px}.closing h2{font-size:28px}.closing .button{min-width:180px}.mobile-break{display:none}.footer{display:flex;align-items:center;gap:24px;padding-block:26px 30px;color:var(--muted);font-size:14px;flex-wrap:wrap}.footer .brand{font-size:21px;color:var(--ink)}.footer nav{display:flex;gap:25px}.footer small{margin-left:auto;font-size:12px}.contact-head{display:flex;justify-content:space-between;align-items:center;gap:25px}.contact-head h2{font-size:22px}.close-dialog{width:36px;height:36px;font-size:28px;line-height:1;border:0;background:#f1f5f7;border-radius:50%;color:var(--muted)}dialog{color:var(--ink);width:390px;max-width:calc(100% - 32px);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 20px 100px #102d4350}dialog::backdrop{background:#102d4366;backdrop-filter:blur(4px)}dialog>p{color:var(--muted);font-size:14px;margin-top:12px}dialog>img{margin:20px auto}.contact-wechat{display:flex;align-items:center;gap:15px;justify-content:center;font-size:14px}.copy-status{min-height:22px;text-align:center}body.dialog-open{overflow:hidden}
@media(min-width:1600px){.hero{min-height:720px}.hero h1{font-size:60px}}
@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.header-inner{gap:20px;height:78px}.site-header nav{gap:18px;font-size:15px}.header-actions{gap:15px}.brand{font-size:24px}.brand img{width:36px;height:36px}.button.small{padding:10px 15px;font-size:14px}.hero{min-height:560px}.hero h1{font-size:42px}.hero-description{font-size:17px}.hero-actions{gap:12px}.hero-actions .button{font-size:16px;padding:12px 17px}.trial-note{font-size:12px}.platform-strip>strong{font-size:17px}.platforms{gap:22px}.platforms>span{font-size:17px}.platform-strip>a{font-size:13px}h2{font-size:28px}.section-heading{align-items:flex-start;flex-direction:column;gap:10px}.feature-grid article{padding-inline:18px}.feature-grid h3{font-size:16px}.steps{gap:20px}.step-title{gap:10px}.step-title h3{font-size:18px}.example{padding:16px}.pricing-grid{gap:40px}.footer{gap:18px}.footer small{width:100%;margin-left:0}}
@media(max-width:760px){html{scroll-padding-top:90px}.wrap{width:calc(100% - 40px)}.header-inner{height:70px;gap:12px}.brand{gap:7px;font-size:23px}.brand img{width:33px;height:33px}.header-actions{gap:13px}.header-actions .button{display:none}.login-link{font-size:15px}.menu-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:1px solid var(--line);background:white;width:37px;height:37px;border-radius:9px}.menu-toggle span{width:15px;height:1.5px;background:var(--ink)}.site-header nav{display:none;position:absolute;top:69px;left:0;right:0;background:#fff;padding:12px 20px 20px;border-bottom:1px solid var(--line);box-shadow:0 14px 22px #122f4308}.site-header nav.is-open{display:flex;flex-direction:column;gap:0}.site-header nav a{padding:12px 8px;font-size:16px}.hero{grid-template-columns:1fr;padding-block:38px 5px;min-height:0;gap:10px}.hero h1{font-size:38px;line-height:1.35;letter-spacing:-1.4px}.hero-description{font-size:16px;line-height:1.9;margin-top:20px;max-width:480px}.hero-actions{margin-top:24px;gap:10px}.hero-actions .button{font-size:16px;min-height:50px;padding:12px 16px;gap:10px}.trial-note{font-size:12px;line-height:1.8;margin-top:14px;max-width:310px}.hero-art{width:106%;margin:0 0 0 -3%}.platform-strip{flex-direction:column;gap:14px;padding:21px 0 23px;align-items:flex-start}.platform-strip>strong{font-size:16px}.platforms{gap:25px}.platforms>span{font-size:16px;gap:8px}.platforms img{width:30px;height:30px;border-radius:7px}.platform-strip>a{font-size:13px}.features{padding-block:42px}.section-heading h2,h2{font-size:26px;letter-spacing:-.7px}.section-heading>p{font-size:15px;line-height:1.8;max-width:290px}.feature-grid{grid-template-columns:1fr 1fr;margin-top:30px;gap:28px 24px}.feature-grid article,.feature-grid article:first-child,.feature-grid article:last-child{border:0;padding:0}.feature-icon{width:36px;height:36px;margin-bottom:12px}.feature-grid h3{font-size:15px}.feature-grid p{font-size:13px;line-height:1.9}.how{padding-block:36px 25px}.how h2{max-width:290px}.steps{grid-template-columns:1fr;gap:28px;margin:27px 0}.step-title>span{font-size:32px}.step-title h3{font-size:20px}.steps li>p{font-size:14px;margin:9px 0 14px}.example{padding:18px;min-height:154px}.example-label{font-size:13px}.keyword-example{padding:9px;gap:10px}.keyword-example b{font-size:15px}.example-note{font-size:12px}.sample-platforms{gap:28px}.sample-plan{font-size:14px}.comment-example{font-size:15px}.notification-note{display:grid;grid-template-columns:20px 1fr;align-items:start;gap:8px 12px;padding-top:21px;font-size:14px}.notification-note>span{line-height:1.3}.notification-note>a{grid-column:2;margin-left:0;font-size:14px}.pricing{padding-block:40px}.pricing h2{max-width:300px}.pricing-grid{grid-template-columns:1fr;gap:24px;margin-top:24px}.trial{padding:25px 26px;border-radius:16px}.trial h3{font-size:22px}.trial-amount{font-size:57px}.trial p{font-size:15px}.trial .button{font-size:16px;min-height:48px}.price-points>p{padding:16px 0;gap:14px}.price-points strong{font-size:15px}.price-points small{font-size:12px}.faq{grid-template-columns:1fr;gap:22px;padding-block:32px 30px}.faq>div:first-child{display:flex;align-items:center;justify-content:space-between}.faq>div>p{margin:0;font-size:12px}.faq .text-button{font-size:12px}.questions summary{padding:14px 15px;font-size:14px}.questions details p{padding:13px 15px;font-size:14px}.closing{flex-direction:column;align-items:flex-start;padding:26px;gap:20px;border-radius:14px}.closing h2{font-size:24px}.mobile-break{display:block}.closing .button{font-size:16px;min-height:48px;min-width:150px}.footer{gap:14px 18px;padding-block:24px}.footer .brand{font-size:20px}.footer>span{font-size:13px}.footer nav{width:100%;gap:24px;font-size:14px}.footer small{font-size:12px}.contact-head h2{font-size:20px}dialog{padding:22px}.contact-wechat{gap:12px}.contact-wechat .button{padding:10px 12px}}
@media(max-width:360px){.hero h1{font-size:34px}.hero-actions .button{font-size:14px;padding-inline:13px}.platforms{gap:20px}.feature-grid{gap:25px 16px}.feature-grid h3{font-size:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}.button:hover{transform:none}}