/* ===== Hyper CMS — public theme (Square-inspired) ===== */
:root {
  --ink: #101114;
  --ink-2: #3c4048;
  --gray: #5b6472;
  --line: #e7e7ea;
  --soft: #f6f6f7;
  --paper: #ffffff;
  --green: #00b140;
  --green-dark: #008a33;
  --green-tint: #e8f8ee;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(16, 17, 20, .08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--green); color: #fff; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; }
.wrap.narrow { max-width: 820px; }

h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 700; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--ink); color: #fff;
  padding: 15px 32px; border-radius: 999px;
  font-weight: 600; font-size: 15.5px; line-height: 1;
  border: 2px solid var(--ink);
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(16,17,20,.22); }
.btn-green { background: var(--green); border-color: var(--green); }
.btn-green:hover { background: var(--green-dark); border-color: var(--green-dark); box-shadow: 0 10px 24px rgba(0,177,64,.3); }
.btn-outline { background: transparent; color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: transparent; padding-left: 8px; padding-right: 8px; }
.btn-ghost:hover { box-shadow: none; transform: none; color: var(--green-dark); }
.btn-ghost-dark { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-ghost-dark:hover { background: rgba(255,255,255,.12); box-shadow: none; transform: none; }
.btn-sm { padding: 11px 22px; font-size: 14.5px; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 28px; }
.btn-row.center { justify-content: center; }
.arr { transition: transform .15s ease; }
.btn:hover .arr, .link-arrow:hover .arr, .art-card:hover .arr { transform: translateX(4px); }

.link-arrow { font-weight: 600; color: var(--ink); border-bottom: 2px solid var(--green); padding-bottom: 2px; }
.link-arrow:hover { color: var(--green-dark); }

/* ---------- header ---------- */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.site-head.scrolled { border-color: var(--line); box-shadow: 0 4px 24px rgba(16,17,20,.05); }
.head-in { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 10px; flex: 0 0 auto;
  background: var(--green); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}
.brand-mark svg { width: 20px; height: 20px; }
.brand-name {
  font-weight: 800; font-size: 15px; letter-spacing: .04em; text-transform: uppercase;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 340px;
}
.site-nav { display: flex; align-items: center; gap: 28px; }
.nav-link { font-weight: 600; font-size: 15px; color: var(--ink-2); position: relative; padding: 6px 0; }
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 3px;
  background: var(--green); transition: right .18s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { right: 0; }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 22px; height: 2.5px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .2s; }

/* ---------- sections base ---------- */
.sec { padding: 104px 0; }
.sec-white { background: var(--paper); }
.sec-soft { background: var(--soft); }
.sec-dark { background: #101114; color: #fff; }
.sec-head { max-width: 640px; margin-bottom: 52px; }
.sec-head.row-between { max-width: none; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.eyebrow { color: var(--green-dark); font-weight: 700; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; margin: 0 0 14px; }
.sec-dark .eyebrow { color: #4be07f; }
.sec-title { font-size: clamp(30px, 4vw, 44px); margin: 0; }
.sec-title.left { text-align: left; }
.sec-title.inv { color: #fff; text-align: center; margin-bottom: 48px; }
.muted { color: var(--gray); }
.small { font-size: 13px; }

/* ---------- hero ---------- */
.hero { padding: 96px 0 120px; overflow: hidden; position: relative; }
.hero::before {
  content: ""; position: absolute; right: -220px; top: -220px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(0,177,64,.10) 0%, rgba(0,177,64,0) 70%);
  border-radius: 50%; pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.hero-copy h1 { font-size: clamp(38px, 5.4vw, 64px); margin: 0 0 22px; }
.hero-sub { color: var(--gray); font-size: 19px; max-width: 520px; margin: 0 0 6px; }
.hero-note { margin-top: 18px; font-size: 14px; color: #8a919d; }

/* browser mockup */
.hero-art { position: relative; }
.mock {
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 30px 80px rgba(16,17,20,.14);
  overflow: hidden; transform: rotate(.6deg);
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fafafa; }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #d8dade; }
.mock-bar i:first-child { background: #ff6058; }
.mock-bar i:nth-child(2) { background: #ffbe2f; }
.mock-bar i:nth-child(3) { background: #2bc840; }
.mock-url { margin-left: 12px; font-size: 12px; color: #9aa0a6; background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 3px 12px; }
.mock-body { display: grid; grid-template-columns: 190px 1fr; min-height: 340px; }
.mock-side { border-right: 1px solid var(--line); padding: 20px 16px; display: flex; flex-direction: column; gap: 14px; }
.mock-logo { width: 34px; height: 34px; border-radius: 9px; background: var(--green); margin-bottom: 10px; }
.mock-line { height: 10px; border-radius: 5px; background: #ecedf0; }
.w50 { width: 50%; } .w60 { width: 60%; } .w70 { width: 70%; } .w80 { width: 80%; }
.mock-main { padding: 20px; }
.mock-chips { display: flex; gap: 8px; margin-bottom: 18px; }
.mock-chips span { font-size: 12px; font-weight: 600; color: var(--ink-2); background: var(--soft); border: 1px solid var(--line); padding: 5px 14px; border-radius: 999px; }
.mock-chips span:first-child { background: var(--ink); color: #fff; border-color: var(--ink); }
.mock-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 18px; }
.mock-stat { border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.mock-stat b { display: block; font-size: 17px; }
.mock-stat.up b { color: var(--green-dark); }
.mock-stat small { color: #9aa0a6; font-size: 11px; }
.mock-chart { display: flex; align-items: flex-end; gap: 8px; height: 120px; padding: 0 4px; }
.mock-chart i { flex: 1; background: linear-gradient(180deg, #bdf0d2, var(--green)); border-radius: 6px 6px 2px 2px; height: var(--h, 40%); }
.float-card {
  position: absolute; display: flex; gap: 12px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: 0 16px 44px rgba(16,17,20,.14); padding: 14px 18px;
  animation: float 5s ease-in-out infinite;
}
.float-card b { display: block; font-size: 14px; }
.float-card small { color: #9aa0a6; font-size: 12px; }
.fc-ic { width: 36px; height: 36px; border-radius: 10px; background: var(--green-tint); color: var(--green-dark); display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.fc-ic.green { background: var(--green); color: #fff; }
.fc-ic svg { width: 18px; height: 18px; }
.fc1 { left: -34px; bottom: 64px; }
.fc2 { right: -20px; top: 38px; animation-delay: 2.4s; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- stats ---------- */
.stats-sec { padding: 88px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.stat b { display: block; font-size: clamp(26px, 3vw, 40px); letter-spacing: -0.02em; }
.stat b::after { content: ""; display: block; width: 34px; height: 4px; background: var(--green); border-radius: 2px; margin: 12px 0 10px; }
.stat span { color: var(--gray); font-size: 15px; }
.sec-dark .stat span { color: #b9bdc4; }

/* ---------- feature cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-ic {
  width: 48px; height: 48px; border-radius: 12px; margin-bottom: 20px;
  background: var(--green-tint); color: var(--green-dark);
  display: inline-flex; align-items: center; justify-content: center;
}
.card-ic svg { width: 22px; height: 22px; }
.card h3 { font-size: 19.5px; margin: 0 0 10px; }
.card p { color: var(--gray); font-size: 15px; margin: 0; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-grid.flip .about-media { order: 2; }
.about-media img, .about-ph { border-radius: 24px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.about-ph { aspect-ratio: 9/7; background: linear-gradient(135deg, var(--green-tint), var(--soft)); display: flex; align-items: center; justify-content: center; color: var(--green-dark); }
.about-ph svg { width: 64px; height: 64px; }
.prose { color: var(--ink-2); font-size: 16.5px; }
.prose p { margin: 0 0 16px; }
.prose h2 { font-size: 26px; margin: 30px 0 12px; }
.prose h3 { font-size: 20px; margin: 24px 0 10px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 16px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--green-dark); border-bottom: 2px solid var(--green); font-weight: 600; }
.prose img { border-radius: 16px; margin: 20px 0; }
.sec-dark .prose { color: #c9cdd4; }

/* ---------- article cards ---------- */
.art-cards { grid-template-columns: repeat(3, 1fr); }
.art-card {
  display: flex; flex-direction: column; background: var(--paper);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease;
}
.art-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.art-card:hover h3 { color: var(--green-dark); }
.art-cover { aspect-ratio: 16/9; overflow: hidden; border-bottom: 1px solid var(--line); }
.art-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.art-card:hover .art-cover img { transform: scale(1.04); }
.art-body { padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 10px; }
.art-date { color: #8a919d; font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin: 0; }
.art-date.big { font-size: 14px; margin-bottom: 10px; }
.art-body h3 { font-size: 20px; margin: 0; }
.art-sum { color: var(--gray); font-size: 15px; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.art-more { margin-top: auto; font-weight: 700; font-size: 14px; color: var(--green-dark); }

/* ---------- cta ---------- */
.cta-sec { padding: 40px 0 104px; }
.cta-panel {
  background: #101114; color: #fff; border-radius: 28px;
  padding: 72px 48px; text-align: center;
}
.cta-panel h2 { font-size: clamp(28px, 4vw, 42px); margin: 0 0 14px; }
.cta-panel p { color: #b9bdc4; max-width: 560px; margin: 0 auto 8px; font-size: 17px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.c-ic {
  width: 42px; height: 42px; border-radius: 11px; flex: 0 0 auto;
  background: #fff; border: 1px solid var(--line); color: var(--green-dark);
  display: inline-flex; align-items: center; justify-content: center;
}
.c-ic svg { width: 19px; height: 19px; }
.contact-list b { display: block; font-size: 15px; }
.contact-list span:not(.c-ic) { color: var(--gray); font-size: 14.5px; }
.contact-card {
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  padding: 34px; box-shadow: var(--shadow);
}
.contact-card h3 { margin: 0 0 20px; font-size: 21px; }
.contact-card label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-2); margin-bottom: 16px; }
.contact-card input, .contact-card textarea {
  display: block; width: 100%; margin-top: 7px;
  border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  font: inherit; font-size: 15px; color: var(--ink); background: #fff;
}
.contact-card input:focus, .contact-card textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(0,177,64,.15); }
.form-note { font-size: 13px; color: #8a919d; margin: 14px 0 0; }
.form-note a { color: var(--green-dark); font-weight: 600; }

/* ---------- articles list page ---------- */
.page-head { background: var(--soft); padding: 88px 0 72px; border-bottom: 1px solid var(--line); }
.page-title { font-size: clamp(34px, 5vw, 54px); margin: 0 0 16px; }
.page-sub { color: var(--gray); font-size: 18px; max-width: 640px; margin: 0; }

/* ---------- article page ---------- */
.art-page { padding: 72px 0 96px; }
.art-page .back { display: inline-block; margin-bottom: 30px; }
.art-lead { font-size: 19px; color: var(--gray); margin: 0 0 30px; }
.art-hero { border-radius: 24px; box-shadow: var(--shadow); margin: 0 0 40px; border: 1px solid var(--line); }
.art-footer-cta { margin-top: 64px; }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); background: #fff; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px; padding: 72px 28px 56px; }
.foot-brand p { color: var(--gray); font-size: 14px; margin: 18px 0 0; max-width: 380px; }
.foot-tag { font-weight: 600; color: var(--ink-2) !important; }
.foot-col { display: flex; flex-direction: column; gap: 12px; }
.foot-col h4 { margin: 0 0 6px; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink); }
.foot-col a, .foot-contact { color: var(--gray); font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
.foot-col a:hover { color: var(--green-dark); }
.foot-col svg { width: 15px; height: 15px; color: var(--green-dark); }
.foot-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
.foot-bottom-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: #8a919d; font-size: 13px; }

/* ---------- reveal animation ---------- */
.rv { opacity: 0; transform: translateY(22px); transition: opacity .55s ease, transform .55s ease; }
.rv.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-grid.flip .about-media { order: 0; }
  .cards, .art-cards { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .fc1 { left: 0; } .fc2 { right: 0; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .sec { padding: 72px 0; }
  .hero { padding: 64px 0 88px; }
  .cards, .art-cards, .stats-grid { grid-template-columns: 1fr; }
  .burger { display: block; }
  .site-nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px 28px 20px;
    box-shadow: 0 20px 40px rgba(16,17,20,.08);
  }
  .site-nav.open { display: flex; }
  .site-nav .nav-link { padding: 13px 0; border-bottom: 1px solid var(--soft); }
  .site-nav .btn { margin-top: 14px; }
  .brand-name { max-width: 190px; }
  .cta-panel { padding: 52px 26px; }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
}