:root{
  --ink:#111113;
  --muted:#6f7078;
  --line:#e8e8eb;
  --paper:#ffffff;
  --soft:#f6f7f8;
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.shell{width:min(1120px,calc(100% - 40px));margin:0 auto}

.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid rgba(232,232,235,.9);background:rgba(255,255,255,.9);backdrop-filter:blur(18px)}
.site-header__inner{height:68px;display:flex;align-items:center;gap:28px}
.brand{font-size:21px;font-weight:760;letter-spacing:-.045em}
.site-nav{display:flex;gap:24px;margin-left:auto}
.site-nav a{font-size:14px;color:#3f4046}
.site-nav a:hover{color:#000}

.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;background:var(--ink);color:#fff;font-size:14px;font-weight:680;white-space:nowrap}
.button--small{min-height:38px;padding:0 16px}
.button--light{background:#fff;color:var(--ink)}
.text-link{font-size:14px;font-weight:650}

h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(48px,7vw,82px);line-height:.99;letter-spacing:-.062em;margin-bottom:26px}
h2{font-size:clamp(34px,4.6vw,54px);line-height:1.03;letter-spacing:-.052em;margin-bottom:18px}
h3{font-size:22px;line-height:1.15;letter-spacing:-.035em}
.eyebrow,.section-kicker{display:inline-block;margin-bottom:18px;color:#8a8b92;font-size:11px;font-weight:760;letter-spacing:.12em;text-transform:uppercase}

.hero{padding:116px 0 92px;background:radial-gradient(circle at 80% 16%,#eef2ff 0,transparent 28%)}
.hero__inner{max-width:930px;text-align:center}
.hero__lead{max-width:760px;margin:0 auto 30px;color:var(--muted);font-size:20px;line-height:1.6}
.hero__actions{display:flex;align-items:center;justify-content:center;gap:22px}
.hero__meta{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:34px;color:#8a8b92;font-size:12px}
.hero__meta span:before{content:"✓";margin-right:7px;color:var(--ink)}

.section{padding:96px 0}
.section--tight{padding-top:88px}
.section--soft{background:var(--soft)}
.section--dark{background:#111113;color:#fff}
.section--dark .section-kicker{color:#8c8d94}
.section--dark p{color:#b8b9c0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{max-width:760px;margin-bottom:0}
.section-note{max-width:390px;margin:0;color:var(--muted);font-size:13px;line-height:1.6}

.product-preview-section{padding-top:82px}
.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.preview-card{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 18px 46px rgba(0,0,0,.045)}
.preview-card__head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line);font-size:12px;font-weight:700}
.preview-card__head small{color:#8a8b92;font-size:10px;font-weight:600}

.checkout-preview,.tracking-preview,.message-preview{min-height:295px;padding:22px;background:linear-gradient(180deg,#fff 0%,#fafafb 100%)}
.checkout-preview__label{margin-bottom:8px;color:#777980;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.checkout-preview__label--second{margin-top:22px}
.address-card{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid #d8dbe1;border-radius:14px;background:#fff}
.address-card.is-selected{border-color:#1f2937}
.address-card__dot{width:17px;height:17px;border:5px solid #111827;border-radius:50%;background:#fff;flex:0 0 17px}
.address-card__body{display:flex;min-width:0;flex:1;flex-direction:column;gap:2px}
.address-card__body strong{font-size:13px}
.address-card__body span,.address-card__body small{overflow:hidden;color:#6b7280;font-size:10px;line-height:1.3;white-space:nowrap;text-overflow:ellipsis}
.address-card__action{font-size:10px;font-weight:700}
.address-summary{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px;border:1px solid #e2e4e9;border-radius:12px;background:#fff;color:#53555c;font-size:10px;line-height:1.4}
.address-summary strong{color:#111}

.tracking-preview__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.tracking-preview__top>div{display:flex;flex-direction:column;gap:2px}
.tracking-preview__top strong{font-size:13px}
.tracking-preview__top small{color:#7d7f86;font-size:10px}
.track-button{padding:7px 10px;border:1px solid #ccd0d6;border-radius:8px;background:#fff;font-size:9px;font-weight:700}
.tracking-preview__meta{display:flex;align-items:center;gap:8px;margin-top:18px;color:#68707c;font-size:10px}
.tracking-preview__meta>*+*{padding-left:8px;border-left:1px solid #d8dbe1}
.tracking-preview__meta strong{color:#111827;font:700 11px ui-monospace,SFMono-Regular,Menlo,monospace}
.tracking-steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);margin-top:38px}
.tracking-rail{position:absolute;top:6px;left:7px;right:7px;height:3px;border-radius:99px;background:#dde2e8;overflow:hidden}
.tracking-rail span{display:block;width:67%;height:100%;background:#111}
.tracking-step{position:relative;z-index:1;display:flex;align-items:center;flex-direction:column;gap:8px;text-align:center}
.tracking-step i{display:block;width:15px;height:15px;border:2px solid #cbd5e1;border-radius:50%;background:#f8fafc}
.tracking-step span{color:#9297a0;font-size:9px;font-weight:600}
.tracking-step.is-done i{position:relative;border-color:#111;background:#111}
.tracking-step.is-done i:after{position:absolute;top:2px;left:4px;width:3px;height:6px;border:solid #fff;border-width:0 1.5px 1.5px 0;content:"";transform:rotate(45deg)}
.tracking-step.is-done span{color:#5f636a}
.tracking-step.is-active i{border:3px solid #111;background:#fff;box-shadow:0 0 0 4px rgba(17,17,17,.08)}
.tracking-step.is-active span{color:#111;font-weight:700}

.message-preview{display:flex;flex-direction:column}
.message-preview__meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;font-size:10px}
.message-preview__meta span{font-weight:700}
.message-preview__meta strong{padding:5px 8px;border-radius:999px;background:#f0f1f3;color:#64666d;font-size:9px}
.message-bubble{align-self:flex-end;width:92%;padding:14px 15px;border-radius:14px 14px 3px 14px;background:#eef8ef;font-size:11px;line-height:1.55}
.message-bubble strong{display:block;margin-bottom:8px;font-size:12px}
.message-bubble p{margin:0 0 3px}
.sample-label{margin-top:auto;padding-top:18px;color:#92939a;font-size:9px}

.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.feature-card>a{display:flex;min-height:245px;flex-direction:column;padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.feature-card>a:hover{transform:translateY(-2px);border-color:#d8d8dd;box-shadow:0 14px 34px rgba(0,0,0,.05)}
.feature-card h3{margin-bottom:10px}
.feature-card p{max-width:510px;color:var(--muted);line-height:1.62}
.feature-card__tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:28px}
.feature-card__tags span,.feature-row__tags span,.tool-list span{padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:#fafafa;font-size:11px;color:#66676f}

.compact-block{display:grid;grid-template-columns:210px 1fr;gap:44px;align-items:start}
.tool-list{display:flex;flex-wrap:wrap;gap:9px}
.tool-list span{padding:10px 13px;background:#fff}

.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.post-card{padding:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.post-card time,.article-card time{color:#92939a;font-size:11px}
.post-card h3{margin:12px 0 9px}
.post-card p{margin-bottom:0;color:var(--muted);font-size:14px;line-height:1.6}

.cta{display:grid;grid-template-columns:1fr .75fr;gap:80px;align-items:end}
.cta h2{margin-bottom:0}
.cta__side p{font-size:17px;line-height:1.65}

.page-hero{padding:96px 0 66px;background:var(--soft)}
.page-hero__inner{max-width:860px}
.page-hero h1{font-size:clamp(48px,6vw,72px)}
.page-hero p{max-width:700px;margin-bottom:0;color:var(--muted);font-size:19px;line-height:1.6}

.feature-groups{display:grid;gap:72px}
.feature-group{display:grid;grid-template-columns:260px 1fr;gap:56px;padding-bottom:64px;border-bottom:1px solid var(--line)}
.feature-group:last-child{padding-bottom:0;border-bottom:0}
.feature-group>h2{margin:0;font-size:30px;line-height:1.1}
.feature-group__items{display:grid}
.feature-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,320px);gap:32px;padding:0 0 28px;margin:0 0 28px;border-bottom:1px solid var(--line)}
.feature-row:last-child{margin-bottom:0;border-bottom:0}
.feature-row h3{margin-bottom:8px}
.feature-row p{max-width:600px;margin-bottom:0;color:var(--muted);line-height:1.6}
.feature-row__tags{display:flex;justify-content:flex-end;align-content:flex-start;flex-wrap:wrap;gap:7px}

.article-list{max-width:840px}
.article-card{padding:30px 0;border-bottom:1px solid var(--line)}
.article-card:first-child{padding-top:0}
.article-card h2{margin:10px 0 12px;font-size:32px;letter-spacing:-.04em}
.article-card p{max-width:680px;color:var(--muted);line-height:1.65}
.empty-state{padding:48px 0}
.empty-state h2{font-size:34px}

.site-footer{padding:54px 0;border-top:1px solid var(--line)}
.site-footer__inner{display:flex;align-items:flex-start;justify-content:space-between;gap:40px}
.site-footer p{margin:10px 0 0;color:var(--muted);font-size:13px}
.site-footer__links{display:flex;gap:22px;font-size:13px;color:#4b4c52}

@media(max-width:900px){
  .preview-grid{grid-template-columns:1fr}
  .checkout-preview,.tracking-preview,.message-preview{min-height:0}
}

@media(max-width:800px){
  .shell{width:min(100% - 28px,1120px)}
  .site-header__inner{height:62px;gap:16px}
  .site-nav{gap:14px}
  .site-nav a{font-size:13px}
  .site-header .button{min-height:34px;padding:0 12px;font-size:12px}
  .hero{padding:82px 0 68px}
  .hero__lead{font-size:18px}
  .hero__actions{flex-direction:column;gap:14px}
  .section{padding:72px 0}
  .section-head{align-items:flex-start;flex-direction:column}
  .section-note{max-width:100%}
  .feature-grid,.post-grid,.cta,.compact-block,.feature-group,.feature-row{grid-template-columns:1fr}
  .feature-card>a{min-height:220px}
  .compact-block{gap:20px}
  .cta{gap:28px}
  .feature-groups{gap:52px}
  .feature-group{gap:26px;padding-bottom:46px}
  .feature-row{gap:18px}
  .feature-row__tags{justify-content:flex-start}
  .page-hero{padding:72px 0 50px}
  .site-footer__inner{flex-direction:column}
}

@media(max-width:520px){
  .site-nav a:first-child{display:none}
  h1{font-size:45px}
  .hero__meta{gap:10px 16px}
  .checkout-preview,.tracking-preview,.message-preview{padding:18px}
}

/* Features page — selected module previews */
.feature-group__title h2{margin:0;font-size:30px;line-height:1.1}
.feature-group__title p{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
.feature-group__content{min-width:0}
.group-preview{overflow:hidden;margin-bottom:34px;border:1px solid var(--line);border-radius:18px;background:#fff}
.group-preview__bar{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-bottom:1px solid var(--line);font-size:10px;font-weight:700}
.group-preview__bar small{color:#96979e;font-size:9px;font-weight:600}
.group-preview__body{padding:18px;background:linear-gradient(180deg,#fff,#fafafb)}
.mini-label{display:block;margin-bottom:7px;color:#7d7e85;font-size:9px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.mini-label--spaced{margin-top:16px}
.mini-address{display:flex;align-items:center;gap:10px;padding:11px;border:1px solid #cfd3da;border-radius:11px;background:#fff}
.mini-address>i{width:15px;height:15px;border:4px solid #111;border-radius:50%;flex:0 0 15px}
.mini-address>div{display:flex;min-width:0;flex:1;flex-direction:column;gap:1px}
.mini-address strong{font-size:11px}
.mini-address span,.mini-address small{overflow:hidden;color:#73757d;font-size:9px;white-space:nowrap;text-overflow:ellipsis}
.mini-address>b{font-size:9px}
.mini-summary{display:flex;justify-content:space-between;gap:12px;padding:10px;border:1px solid #e1e3e7;border-radius:10px;color:#64666d;font-size:9px;background:#fff}
.mini-summary b{color:#111}

.mini-order-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.mini-order-top>div{display:flex;flex-direction:column;gap:1px}
.mini-order-top strong{font-size:11px}
.mini-order-top small{color:#85878e;font-size:9px}
.mini-order-top>span{padding:6px 9px;border:1px solid #d2d5da;border-radius:6px;font-size:8px;font-weight:700}
.mini-progress{position:relative;display:grid;grid-template-columns:repeat(4,1fr);margin:26px 0 20px}
.mini-progress__rail{position:absolute;top:5px;left:6px;right:6px;height:2px;background:#dfe2e7}
.mini-progress__rail i{display:block;width:67%;height:100%;background:#111}
.mini-progress__step{position:relative;z-index:1;display:flex;align-items:center;flex-direction:column;gap:6px}
.mini-progress__step>i{width:12px;height:12px;border:2px solid #cbd0d7;border-radius:50%;background:#fff}
.mini-progress__step>span{color:#92949b;font-size:8px}
.mini-progress__step.is-done>i{border-color:#111;background:#111}
.mini-progress__step.is-active>i{border:3px solid #111;box-shadow:0 0 0 3px rgba(17,17,17,.07)}
.mini-progress__step.is-done>span,.mini-progress__step.is-active>span{color:#111}
.mini-message{margin-left:auto;width:72%;padding:10px 12px;border-radius:11px 11px 3px 11px;background:#eef8ef}
.mini-message strong{display:block;margin-bottom:3px;font-size:10px}
.mini-message span{color:#555b58;font-size:8px}

.mini-installments__head{display:flex;align-items:center;gap:7px;margin-bottom:10px;font-size:11px}
.mini-installments__head span{font-size:14px}
.mini-bank-tabs{display:flex;gap:7px;margin-bottom:10px}
.mini-bank-tabs>*{padding:6px 10px;border-radius:999px;font-size:8px}
.mini-bank-tabs b{background:#111;color:#fff}
.mini-bank-tabs span{background:#f0f1f3;color:#686a72}
.mini-installment-table{overflow:hidden;border:1px solid #d9dce1;border-radius:10px;background:#fff}
.mini-installment-table>div{display:grid;grid-template-columns:1fr 1fr auto;align-items:center;gap:10px;padding:9px 11px;border-bottom:1px solid #e4e6ea}
.mini-installment-table>div:last-child{border-bottom:0}
.mini-installment-table strong,.mini-installment-table span{font-size:9px}
.mini-installment-table small{color:#898b92;font-size:8px;text-align:right}
.mini-installment-table>div:first-child strong{grid-column:1/3}
.mini-installment-table>div:first-child span{text-align:right}

.mini-invoice>p{margin-bottom:12px;color:#74767d;font-size:9px;line-height:1.5}
.mini-invoice__item{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid #d9dce1;border-radius:9px;background:#f8f8f9}
.mini-invoice__icon{display:flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:6px;background:#fff;font-size:15px}
.mini-invoice__item strong{flex:1;font-size:10px}
.mini-invoice__item b{padding:6px 8px;border:1px solid #d0d3d9;border-radius:5px;background:#fff;font-size:8px}
.mini-export{display:flex;align-items:center;justify-content:space-between;margin-top:10px;padding:10px 12px;border:1px dashed #d7d9de;border-radius:9px;color:#606269;font-size:9px}
.mini-export small{color:#8b8d94;font-size:8px}

@media(max-width:800px){
  .feature-group__title p{display:none}
  .group-preview{margin-bottom:26px}
}

/* Blog article */
.blog-single__hero{padding:84px 0 58px;background:var(--soft)}
.blog-single__hero-inner{max-width:900px}
.blog-single__hero h1{max-width:880px;font-size:clamp(46px,6.2vw,74px)}
.back-link{display:inline-block;margin-bottom:34px;color:var(--muted);font-size:12px;font-weight:600}
.blog-single__meta{display:flex;gap:14px;flex-wrap:wrap;color:#8b8c93;font-size:11px}
.blog-single__meta span:before{content:"·";margin-right:14px}
.blog-single__layout{padding-top:62px;padding-bottom:100px}
.blog-single__content{max-width:760px;margin:0 auto;color:#242529;font-size:18px;line-height:1.78}
.blog-single__content>p:first-of-type{font-size:21px;line-height:1.65;color:#47484e}
.blog-single__content h2{margin:58px 0 18px;font-size:38px}
.blog-single__content h3{margin:38px 0 14px;font-size:25px}
.blog-single__content ul,.blog-single__content ol{padding-left:22px}
.blog-single__content li{margin-bottom:8px}
.blog-single__content a:not(.text-link){text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.blog-single__content blockquote{margin:34px 0;padding:4px 0 4px 22px;border-left:2px solid #111;color:#5e6067}
.blog-single__content code{padding:2px 5px;border-radius:5px;background:#f2f3f5;font-size:.9em}
.blog-single__image{margin:0 0 38px}
.blog-single__image img{display:block;width:100%;border-radius:16px}
.blog-single__footer{margin-top:64px;padding-top:24px;border-top:1px solid var(--line)}

/* 404 */
.not-found{padding:130px 0}
.not-found__inner{max-width:760px;text-align:center}
.not-found h1{font-size:clamp(46px,6vw,70px)}
.not-found p{max-width:520px;margin:0 auto 28px;color:var(--muted);font-size:18px;line-height:1.6}
.not-found__actions{display:flex;align-items:center;justify-content:center;gap:20px}

@media(max-width:800px){
  .blog-single__hero{padding:64px 0 44px}
  .blog-single__layout{padding-top:46px;padding-bottom:76px}
  .blog-single__content{font-size:17px}
  .blog-single__content>p:first-of-type{font-size:19px}
  .blog-single__content h2{font-size:32px}
  .not-found{padding:92px 0}
  .not-found__actions{flex-direction:column;gap:14px}
}