/* 全局设计变量与基础重置；品牌颜色、字体和间距在此统一管理。 */
:root{--ink:#0c2235;--muted:#5a6874;--line:#dbe2e7;--soft:#f5f7f7;--paper:#fff;--blue:#1474db;--blue-dark:#0c5fbd;--teal:#0b806e;--navy:#082b3d;--cream:#fbf4e9;--shadow:0 18px 60px rgba(12,34,53,.12);--radius:18px;--container:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#f4f4f2;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}body:before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(circle at 10% 15%,rgba(20,116,219,.06),transparent 26%),radial-gradient(circle at 85% 12%,rgba(11,128,110,.05),transparent 25%),#f7f7f5}a{color:inherit}img,svg{display:block}button,input{font:inherit}.container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}.narrow{max-width:940px}.section{padding:72px 0;background:var(--paper)}.section--compact{padding:44px 0}.eyebrow{margin:0 0 10px;color:var(--teal);font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(2.5rem,6vw,5.2rem);line-height:.98;letter-spacing:-.055em}h2{font-size:clamp(1.65rem,3vw,2.7rem);line-height:1.05;letter-spacing:-.035em}h3{font-size:1rem}p{color:var(--muted)}.icon{width:22px;height:22px}.skip-link{position:fixed;left:12px;top:-80px;z-index:1000;padding:12px 16px;background:#fff;border-radius:8px}.skip-link:focus{top:12px}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:8px;text-decoration:none;font-size:.9rem;font-weight:750;transition:.2s ease}.button:hover{transform:translateY(-1px)}.button--primary{color:white;background:var(--blue);box-shadow:0 8px 24px rgba(20,116,219,.2)}.button--primary:hover{background:var(--blue-dark)}.button--secondary{background:white;border-color:#cbd4da}.button--large{min-height:52px;padding-inline:22px}.button-row{display:flex;gap:12px;flex-wrap:wrap}.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:.86rem;font-weight:750;text-decoration:none}.text-link .icon{width:15px}.text-link:hover{text-decoration:underline}

/* 页头、页脚与页面外壳的公共布局样式。 */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.site-header__inner{height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:9px;width:max-content;text-decoration:none;font-weight:850}.brand__symbol{display:grid;place-items:center;width:26px;height:26px;color:white;background:var(--navy);border-radius:5px;font-size:.9rem;transform:skew(-7deg)}.brand__symbol span{transform:skew(7deg)}.brand__name{letter-spacing:-.02em}.brand--inverse{color:white}.brand--inverse .brand__symbol{color:var(--navy);background:white}.nav{display:flex;align-items:stretch;gap:32px;height:72px}.nav__link{position:relative;display:flex;align-items:center;font-size:.82rem;font-weight:650;text-decoration:none}.nav__link:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--blue);transform:scaleX(0);transition:.2s}.nav__link:hover:after,.nav__link.is-active:after{transform:scaleX(1)}.nav__link.is-active{color:var(--blue)}.site-header__tagline{justify-self:end;margin:0;color:#4f5d67;font-size:.72rem;line-height:1.25;text-align:right}.nav-toggle{display:none;border:0;background:none;padding:8px}.nav-toggle span{display:block;width:23px;height:2px;margin:5px;background:var(--ink)}.site-footer{color:#dce8ee;background:linear-gradient(145deg,#092f43,#062638)}.site-footer__grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:46px;padding:54px 0 38px}.site-footer p{color:#a9bcc6}.site-footer__brand p{max-width:220px;margin:18px 0}.footer-group{display:flex;flex-direction:column;gap:8px}.footer-group h2{margin-bottom:8px;color:white;font-size:.82rem;letter-spacing:0}.footer-group a{color:#b8c8d0;font-size:.78rem;text-decoration:none}.footer-group a:hover{color:white}.social-links{display:flex;gap:10px}.social-links a{display:grid;place-items:center;width:32px;height:32px;border:1px solid rgba(255,255,255,.18);border-radius:50%}.social-links .icon{width:16px}.site-footer__bottom{display:flex;justify-content:space-between;padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.12)}.site-footer__bottom p{margin:0;font-size:.72rem}
/* 紧凑语言切换器复用页头现有右侧区域，不改变整体布局。 */
.language-switch{justify-self:end;display:flex;gap:5px;align-items:center}.language-switch__link{padding:5px 7px;border-radius:6px;color:#64737c;font-size:.68rem;font-weight:700;text-decoration:none}.language-switch__link:hover,.language-switch__link.is-active{color:var(--blue);background:#eef5ff}

/* 卡片、展示区域和信息模块等可复用组件样式。 */
.launcher-stage{position:relative;min-height:430px;border-radius:24px;background:radial-gradient(circle at 60% 38%,rgba(255,255,255,.9),rgba(255,255,255,.08) 35%),linear-gradient(155deg,#d8e9ef,#eef2ed 45%,#d3c5ae);overflow:hidden}.launcher-stage:before,.launcher-stage:after{content:"";position:absolute;left:-8%;right:-8%;height:180px;border-radius:50%;background:rgba(255,255,255,.36);filter:blur(12px);transform:rotate(-8deg)}.launcher-stage:before{bottom:-70px}.launcher-stage:after{bottom:5px;opacity:.4}.launcher-window{position:absolute;right:8%;top:34px;width:min(310px,80%);padding:10px;color:#eef5f8;background:rgba(19,31,38,.92);border:1px solid rgba(255,255,255,.15);border-radius:17px;box-shadow:0 25px 50px rgba(9,24,34,.33);backdrop-filter:blur(18px)}.launcher-search{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;padding:10px 11px;color:#adbbc2;background:rgba(255,255,255,.07);border-radius:10px;font-size:.74rem}.launcher-search kbd{padding:2px 5px;border:1px solid rgba(255,255,255,.15);border-radius:4px;font-size:.61rem}.launcher-list{padding:8px 0}.launcher-item{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:9px;padding:8px 9px;border-radius:9px;font-size:.78rem}.launcher-item.is-selected{background:rgba(255,255,255,.1)}.launcher-item__icon{display:grid;place-items:center;width:25px;height:25px;background:#253d48;border-radius:6px;font-size:.65rem}.launcher-item__arrow{color:#7e929c}.launcher-footer{display:flex;justify-content:space-between;padding:8px 9px 2px;color:#8fa1aa;font-size:.67rem}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.product-card{position:relative;min-height:280px;padding:30px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 8px 24px rgba(12,34,53,.035)}.product-card:first-child{border-color:#8bc8bd}.product-card__icon{display:grid;place-items:center;width:58px;height:58px;margin:20px auto;color:var(--teal)}.product-card__icon .icon{width:48px;height:48px}.product-card h3,.product-card p{text-align:center}.product-card .text-link{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);white-space:nowrap}.status-pill{position:absolute;left:18px;top:16px;padding:3px 8px;border:1px solid #cbd3d7;border-radius:99px;color:#6b7379;background:white;font-size:.58rem;font-weight:800;text-transform:uppercase}.status-pill--live{color:white;border-color:var(--teal);background:var(--teal)}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}.section-heading h2{margin-bottom:0}.section-heading>p{max-width:460px;margin-bottom:4px}.principle-strip{padding:38px 0;background:linear-gradient(90deg,#f8fbfa,#f3f8f7)}.principle-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}.principle{text-align:center}.principle .icon{width:32px;height:32px;margin:0 auto 14px;color:var(--teal)}.principle h3{margin-bottom:7px}.principle p{margin:0;font-size:.8rem}.about-preview{display:grid;grid-template-columns:320px 1fr;align-items:center;gap:36px}.about-preview__image,.landscape-card{min-height:175px;border-radius:14px;background:linear-gradient(rgba(8,43,61,.05),rgba(8,43,61,.18)),radial-gradient(circle at 50% 20%,#f6d6a4 0 12%,transparent 30%),linear-gradient(150deg,#496f69 0 28%,#89a892 28% 42%,#d3d8c2 42% 54%,#294f4d 54% 100%);box-shadow:inset 0 -50px 80px rgba(5,37,49,.25)}.support-banner{background:linear-gradient(90deg,#eef7ff,#fff7e9)}.support-banner__inner{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:22px 0}.support-banner__copy{display:flex;align-items:center;gap:18px}.support-banner__copy>.icon{width:34px;height:34px;color:var(--blue)}.support-banner h2{margin:0 0 3px;font-size:1rem}.support-banner p{margin:0;font-size:.8rem}.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.value-grid article{text-align:center}.value-grid article>.icon{width:38px;height:38px;margin:0 auto 16px;color:var(--teal)}.value-card{padding:30px 22px;border:1px solid var(--line);border-radius:14px;background:white}.value-card p{font-size:.82rem}.feature-pills{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.feature-pills span{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border:1px solid #cad5d9;border-radius:99px;background:rgba(255,255,255,.65);font-size:.73rem;font-weight:700}.feature-pills .icon{width:14px}.release-panel{display:flex;justify-content:space-between;align-items:center;padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff}.release-panel h2{margin:0}.release-panel p{margin:5px 0}.release-panel__actions{display:flex;align-items:center;gap:20px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:14px;overflow:hidden}.feature-grid article{padding:28px;border-right:1px solid var(--line)}.feature-grid article:last-child{border-right:0}.feature-grid p{margin:0;font-size:.82rem}.support-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:32px 0}.support-card-grid article{padding:24px;border:1px solid var(--line);border-radius:13px;background:white}.support-card-grid article>.icon{color:var(--blue)}.support-card-grid h2{margin:18px 0 8px;font-size:1rem}.support-card-grid p{font-size:.8rem}.faq-panel{border:1px solid var(--line);border-radius:14px;background:white;overflow:hidden}.faq-panel>h2{padding:22px 24px;margin:0;font-size:1.1rem}.faq-item{border-top:1px solid var(--line)}.faq-item summary,.release-item summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 24px;cursor:pointer;font-weight:700;list-style:none}.faq-item summary::-webkit-details-marker,.release-item summary::-webkit-details-marker{display:none}.faq-item summary .icon,.release-item summary .icon{width:16px;transition:.2s}.faq-item[open] summary .icon,.release-item[open] summary>span:last-child .icon{transform:rotate(180deg)}.faq-item p{padding:0 24px 20px;margin:0;font-size:.86rem}.aside-card{margin-bottom:18px;padding:26px;border:1px solid var(--line);border-radius:14px;background:white}.aside-card>svg{color:var(--teal)}.aside-card h2{margin:15px 0 8px;font-size:1.05rem}.aside-card p,.aside-card li{font-size:.8rem}.aside-card ul{display:grid;gap:10px;padding:0;list-style:none}.aside-card li{display:flex;gap:8px;align-items:center}.aside-card li .icon{width:15px;color:var(--teal)}.aside-card--support{background:#f2f8f5}.button--support{width:100%;color:white;background:var(--teal)}.changelog-list{display:grid;gap:10px;margin-top:34px}.release-item{border:1px solid var(--line);border-radius:12px;background:white}.release-item summary>span{display:flex;align-items:center;gap:12px}.release-item summary small{color:var(--muted);font-weight:500}.release-item summary em{padding:3px 8px;color:white;background:#1d9b64;border-radius:5px;font-size:.65rem;font-style:normal}.release-item ul{margin:0 0 18px 57px;color:var(--muted);font-size:.86rem}.legal-notice{margin-top:32px;padding:16px 18px;border:1px solid #f0dfbd;border-radius:10px;background:#fff7e9;color:#6d5b38}
/* RocketLauncher 真实产品截图的展示样式。 */
.launcher-stage--screenshot{display:flex;align-items:center;justify-content:center;padding:30px;background:linear-gradient(155deg,#eef5f8,#f8faf9 50%,#e7edf0)}.launcher-stage--screenshot:before,.launcher-stage--screenshot:after{display:none}.launcher-stage--screenshot img{position:relative;z-index:1;width:100%;height:auto;max-height:430px;object-fit:contain;border-radius:14px;box-shadow:0 24px 54px rgba(9,24,34,.2)}.about-preview__logo{width:320px;max-height:230px;object-fit:contain;border-radius:14px;background:#fff}.landscape-card--logo{width:100%;height:300px;object-fit:contain;background:#fff;box-shadow:none}.screenshot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.screenshot-grid img{width:100%;height:auto;border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 35px rgba(12,34,53,.08)}

/* 各独立页面专用的组合样式。 */
.hero{background:white}.hero__grid{display:grid;grid-template-columns:1fr 1.15fr;align-items:center;gap:54px;min-height:535px}.hero__copy{padding:70px 0}.hero__copy h1{margin-bottom:22px}.hero__lead{max-width:560px;font-size:1.08rem}.hero--home .launcher-stage{border-radius:0;min-height:535px;margin-right:calc((100vw - min(100vw - 40px,var(--container)))/-2)}.page-hero{padding:72px 0;background:white}.page-hero__grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:54px}.page-hero h1,.download-copy h1{font-size:clamp(2.4rem,4.5vw,4.3rem)}.page-hero p{max-width:620px}.landscape-card{min-height:300px}.principles-section{padding:50px 0;background:var(--cream)}.principles-section h2{font-size:1.3rem}.value-grid--principles article{padding:10px}.download-hero{padding:62px 0;background:linear-gradient(110deg,#fff 0 50%,#e8f5ff 50% 100%)}.download-hero__grid{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:50px}.download-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.download-note{margin-top:13px;font-size:.75rem}.support-layout{display:grid;grid-template-columns:1fr 280px;gap:26px}.page-hero--simple{min-height:650px}.legal-page{padding:70px 0;background:white}.legal-page h1{font-size:clamp(2.5rem,5vw,4.3rem)}.legal-page h2{margin:34px 0 8px;font-size:1.05rem;letter-spacing:0}.legal-page p{max-width:820px}.legal-updated{font-size:.8rem}
/* 博客页面沿用现有视觉系统，不修改首页布局。 */
.page-hero--blog{min-height:auto}.page-hero--blog p{max-width:720px}.blog-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.blog-card{padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff}.blog-card h2{margin:10px 0 14px;font-size:1.35rem}.blog-card h2 a{color:inherit}.blog-card__date,.article-page__meta{font-size:.78rem;color:var(--muted)}.article-page{padding:72px 0;background:#fff}.article-page__inner{max-width:820px}.article-page h1{max-width:760px;font-size:clamp(2.35rem,5vw,4.1rem)}.article-page__lead{margin:24px 0 42px;font-size:1.12rem}.article-page section{margin-top:34px}.article-page section h2{font-size:1.35rem}.article-page__cta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:48px;padding-top:30px;border-top:1px solid var(--line)}

/* 响应式规则集中在单一文件中，避免移动端修正散落到桌面样式。 */
@media (max-width:900px){
  /* 页头在平板和手机端保留品牌、语言切换和菜单按钮三个独立区域。 */
  .site-header__inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}
  .site-header__tagline{display:none}
  .nav-toggle{display:block}
  .nav{position:absolute;left:20px;right:20px;top:64px;display:none;height:auto;padding:12px;flex-direction:column;gap:0;background:white;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
  .nav.is-open{display:flex}
  .nav__link{height:44px}
  .hero__grid,.page-hero__grid,.download-hero__grid,.support-layout{grid-template-columns:1fr}
  .hero--home .launcher-stage{margin-right:0}
  .product-grid{grid-template-columns:1fr}
  .principle-grid,.value-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid article:nth-child(2){border-right:0}
  .feature-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .site-footer__grid{grid-template-columns:repeat(2,1fr)}
  .site-footer__brand{grid-column:1/-1}
  .download-hero{background:linear-gradient(180deg,#fff 0 50%,#e8f5ff 50% 100%)}
  .blog-grid{grid-template-columns:1fr}
}

@media (max-width:760px){
  /* 语言入口缩小但仍保持可点击，不隐藏任何一种语言。 */
  .language-switch{gap:1px}
  .language-switch__link{padding:6px 5px;font-size:.62rem}
  .screenshot-grid{grid-template-columns:1fr}
  .about-preview__logo{width:100%}
}

@media (max-width:620px){
  .container{width:min(calc(100% - 28px),var(--container))}
  .section{padding:54px 0}
  .hero__grid{min-height:auto}
  .hero__copy{padding:55px 0 25px}
  .hero--home .launcher-stage{min-height:330px}
  .launcher-window{right:6%;width:88%}
  .section-heading,.support-banner__inner,.release-panel,.site-footer__bottom{align-items:flex-start;flex-direction:column}
  .principle-grid,.value-grid,.feature-grid,.support-card-grid{grid-template-columns:1fr}
  .feature-grid article{border-right:0;border-bottom:1px solid var(--line)}
  .feature-grid article:last-child{border-bottom:0}
  .about-preview{grid-template-columns:1fr}
  .support-card-grid{display:grid}
  .site-footer__grid{grid-template-columns:1fr}
  .site-footer__brand{grid-column:auto}
  .release-panel__actions{align-items:flex-start;flex-direction:column}
  .page-hero,.download-hero,.legal-page{padding:52px 0}
  .launcher-stage{min-height:330px}
  .button-row,.download-actions{align-items:stretch;flex-direction:column}
  .button-row .button,.download-actions .button{width:100%}
  .product-card{min-height:260px;padding:28px 22px}
  .article-page{padding:52px 0}
}

@media (max-width:430px){
  /* 极窄屏幕只收紧品牌文字和展示区，不改变信息结构。 */
  .site-header__inner{height:64px}
  .brand__name{font-size:.86rem}
  .nav{top:58px;left:14px;right:14px}
  .language-switch__link{padding:5px 3px;font-size:.56rem}
  .nav-toggle{padding:6px}
  .nav-toggle span{width:20px;margin:4px}
  .hero__copy{padding-top:42px}
  .hero--home .launcher-stage,.launcher-stage{min-height:270px}
  .launcher-stage--screenshot{padding:16px}
  .section{padding:46px 0}
  .page-hero,.download-hero,.legal-page{padding:44px 0}
  .site-footer__grid{gap:30px;padding-top:42px}
}