/* =========================================================
   一起草C网站-一起草Cad网站-17C官网
   全局样式表 css/style.css
   主题：在线协同设计 CAD 平台 · 蓝图工程风
   ========================================================= */

:root {
  --c-bg: #f4f7fc;
  --c-surface: #ffffff;
  --c-dark: #0a1730;
  --c-dark-2: #0f2246;
  --c-primary: #1e6bff;
  --c-primary-dark: #0f4fd6;
  --c-accent: #22d3ee;
  --c-amber: #f5a623;
  --c-text: #1f2a44;
  --c-muted: #5b6b87;
  --c-border: #e2e9f4;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 14px rgba(15, 34, 70, .08);
  --shadow-md: 0 14px 40px rgba(15, 34, 70, .14);
  --shadow-lg: 0 24px 70px rgba(10, 23, 48, .22);
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --container: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(.22, .68, .32, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--c-primary-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; color: var(--c-dark); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }

.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--c-primary); color: #fff; padding: .6rem 1.2rem; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.9rem; border-radius: 999px;
  font-weight: 600; font-size: 1rem; letter-spacing: .02em;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease), color .3s var(--ease);
  will-change: transform;
}
.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff; box-shadow: 0 10px 26px rgba(30, 107, 255, .35);
}
.btn-primary:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 16px 34px rgba(30, 107, 255, .45); }
.btn-outline { border: 2px solid rgba(255, 255, 255, .55); color: #fff; background: rgba(255, 255, 255, .06); backdrop-filter: blur(6px); }
.btn-outline:hover { color: var(--c-dark); background: #fff; transform: translateY(-3px); }
.btn-light { background: #fff; color: var(--c-primary); box-shadow: var(--shadow-sm); }
.btn-light:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); color: var(--c-primary-dark); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(10, 23, 48, .86);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: box-shadow .3s var(--ease);
}
.site-header.scrolled { box-shadow: 0 8px 30px rgba(5, 12, 28, .45); }
.navbar { height: var(--header-h); display: flex; align-items: center; gap: 1.5rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: #fff; margin-right: auto; }
.brand:hover { color: #fff; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 11px; flex: none;
  display: grid; place-items: center;
  font-weight: 900; font-size: .95rem; color: #06214f; letter-spacing: .02em;
  background: linear-gradient(135deg, var(--c-accent), #7df9ff 55%, #fff);
  box-shadow: 0 6px 18px rgba(34, 211, 238, .45);
}
.brand-text { font-weight: 900; font-size: 1.22rem; letter-spacing: .04em; line-height: 1.15; display: flex; flex-direction: column; }
.brand-text small { font-size: .68rem; font-weight: 500; color: var(--c-accent); letter-spacing: .28em; }
.nav-menu { display: flex; align-items: center; gap: .35rem; }
.nav-menu a {
  display: block; padding: .55rem 1.05rem; border-radius: 999px;
  color: rgba(255, 255, 255, .82); font-weight: 500; font-size: .98rem;
  transition: background .25s var(--ease), color .25s var(--ease);
}
.nav-menu a:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.nav-menu a.active { color: #fff; background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark)); box-shadow: 0 6px 16px rgba(30, 107, 255, .4); }
.nav-cta { padding: .6rem 1.5rem; font-size: .95rem; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: .5rem; z-index: 110; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: transform .3s var(--ease), opacity .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(34, 211, 238, .22), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(30, 107, 255, .28), transparent 55%),
    linear-gradient(160deg, #0a1730 0%, #0f2246 55%, #0a1730 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .35;
  background-image:
    linear-gradient(rgba(120, 170, 255, .12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 170, 255, .12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(70% 70% at 50% 40%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(70% 70% at 50% 40%, #000 30%, transparent 100%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 3rem; align-items: center; padding: 5.5rem 0 4.5rem;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .4rem 1.05rem; border-radius: 999px; font-size: .88rem; font-weight: 500;
  color: var(--c-accent); border: 1px solid rgba(34, 211, 238, .4); background: rgba(34, 211, 238, .08);
}
.hero-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); box-shadow: 0 0 10px var(--c-accent); animation: pulse 2s infinite; }
.hero h1 { color: #fff; font-size: clamp(2rem, 4.6vw, 3.4rem); font-weight: 900; margin: 1.2rem 0 1.1rem; letter-spacing: .01em; }
.hero h1 .grad { background: linear-gradient(90deg, #7df9ff, var(--c-accent) 40%, #5d9bff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-lead { color: rgba(230, 240, 255, .82); font-size: 1.08rem; max-width: 34rem; margin-bottom: 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.6rem; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 2.4rem; }
.hero-stats .stat b { display: block; font-size: 1.7rem; font-weight: 900; color: #fff; }
.hero-stats .stat b em { font-style: normal; color: var(--c-accent); }
.hero-stats .stat span { font-size: .85rem; color: rgba(230, 240, 255, .6); }
.hero-media { position: relative; }
.hero-media img {
  border-radius: 18px; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .16);
  animation: float 7s ease-in-out infinite;
}
.hero-media::after {
  content: "17C · CAD"; position: absolute; right: -12px; top: -14px;
  padding: .35rem .9rem; border-radius: 999px; font-size: .75rem; font-weight: 700; letter-spacing: .12em;
  color: #06214f; background: linear-gradient(135deg, var(--c-accent), #7df9ff);
  box-shadow: 0 10px 24px rgba(34, 211, 238, .45);
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

/* Page hero (inner pages) */
.hero-page .hero-inner { grid-template-columns: 1fr; text-align: center; padding: 4.6rem 0 4rem; }
.hero-page .hero-lead { margin-inline: auto; }
.hero-page .breadcrumb { display: inline-flex; gap: .5rem; font-size: .88rem; color: rgba(230, 240, 255, .6); margin-top: 1.4rem; }
.hero-page .breadcrumb a { color: var(--c-accent); }
.hero-page .breadcrumb a:hover { color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 5.2rem 0; }
.section-dark { background: linear-gradient(170deg, var(--c-dark), var(--c-dark-2)); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-head { text-align: center; max-width: 46rem; margin: 0 auto 3.2rem; }
.section-tag {
  display: inline-block; padding: .32rem 1rem; border-radius: 999px;
  font-size: .85rem; font-weight: 600; letter-spacing: .12em;
  color: var(--c-primary); background: rgba(30, 107, 255, .09); margin-bottom: 1rem;
}
.section-dark .section-tag { color: var(--c-accent); background: rgba(34, 211, 238, .1); }
.section-head p { color: var(--c-muted); margin-top: .9rem; }
.section-dark .section-head p { color: rgba(230, 240, 255, .7); }

/* ---------- Features ---------- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.feature-card {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 2.1rem 1.8rem; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.feature-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease);
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: rgba(30, 107, 255, .35); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 58px; height: 58px; border-radius: 15px; display: grid; place-items: center;
  font-size: 1.6rem; margin-bottom: 1.3rem;
  background: linear-gradient(135deg, rgba(30, 107, 255, .12), rgba(34, 211, 238, .14));
  border: 1px solid rgba(30, 107, 255, .18);
}
.feature-card h3 { margin-bottom: .65rem; }
.feature-card p { color: var(--c-muted); font-size: .95rem; }

/* ---------- Services ---------- */
.service-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3.4rem; align-items: center;
  padding: 2.6rem 0;
}
.service-row + .service-row { border-top: 1px dashed var(--c-border); }
.service-row:nth-child(even) .service-media { order: 2; }
.service-media img { border-radius: var(--radius); box-shadow: var(--shadow-md); transition: transform .5s var(--ease); }
.service-media:hover img { transform: scale(1.02); }
.service-body .num {
  font-size: .85rem; font-weight: 800; letter-spacing: .2em; color: var(--c-primary);
  display: inline-block; margin-bottom: .7rem;
}
.service-body h3 { font-size: 1.55rem; margin-bottom: .9rem; }
.service-body p { color: var(--c-muted); margin-bottom: 1.1rem; }
.service-body ul li { position: relative; padding-left: 1.6rem; margin-bottom: .5rem; color: var(--c-text); font-size: .96rem; }
.service-body ul li::before {
  content: "✓"; position: absolute; left: 0; top: 0; font-weight: 800; color: var(--c-primary);
}

/* ---------- Steps / Workflow ---------- */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; counter-reset: step; }
.step-card {
  position: relative; background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius); padding: 2rem 1.5rem; backdrop-filter: blur(4px);
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}
.step-card:hover { transform: translateY(-6px); border-color: rgba(34, 211, 238, .5); background: rgba(255, 255, 255, .08); }
.step-card .step-no {
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 900; color: #06214f; margin-bottom: 1.2rem;
  background: linear-gradient(135deg, var(--c-accent), #7df9ff);
  box-shadow: 0 8px 20px rgba(34, 211, 238, .4);
}
.step-card h3 { font-size: 1.1rem; margin-bottom: .55rem; }
.step-card p { font-size: .9rem; color: rgba(230, 240, 255, .7); }

/* ---------- Stats band ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; text-align: center; }
.stats-band .cell { padding: 2rem 1rem; border-radius: var(--radius); background: var(--c-surface); border: 1px solid var(--c-border); box-shadow: var(--shadow-sm); }
.stats-band .cell b { display: block; font-size: 2.1rem; font-weight: 900; color: var(--c-primary); }
.stats-band .cell span { color: var(--c-muted); font-size: .92rem; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 52rem; margin-inline: auto; }
.faq-item { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-sm); margin-bottom: 1rem; overflow: hidden; transition: box-shadow .3s var(--ease); }
.faq-item.open { box-shadow: var(--shadow-sm); }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.15rem 1.5rem; text-align: left; font-size: 1.02rem; font-weight: 600; color: var(--c-dark);
}
.faq-q .chev { flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: rgba(30, 107, 255, .1); color: var(--c-primary); font-size: .8rem; transition: transform .35s var(--ease); }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease); }
.faq-a-inner { padding: 0 1.5rem 1.3rem; color: var(--c-muted); font-size: .95rem; }

/* ---------- CTA ---------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: 22px; text-align: center; color: #fff;
  padding: 4rem 2rem;
  background:
    radial-gradient(600px 260px at 80% 0%, rgba(34, 211, 238, .3), transparent 60%),
    linear-gradient(135deg, var(--c-primary-dark), var(--c-primary) 60%, #2f86ff);
  box-shadow: var(--shadow-lg);
}
.cta-band h2 { color: #fff; margin-bottom: 1rem; }
.cta-band p { color: rgba(255, 255, 255, .85); max-width: 36rem; margin: 0 auto 2rem; }
.cta-band .btn-outline { margin-left: .8rem; }

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.news-card {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.news-card .thumb { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.news-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.news-card:hover .thumb img { transform: scale(1.06); }
.news-card .cat {
  position: absolute; left: 1rem; top: 1rem; padding: .25rem .8rem; border-radius: 999px;
  font-size: .75rem; font-weight: 600; color: #fff; background: rgba(10, 23, 48, .72); backdrop-filter: blur(4px);
}
.news-body { padding: 1.5rem 1.5rem 1.7rem; display: flex; flex-direction: column; flex: 1; }
.news-body time { font-size: .82rem; color: var(--c-muted); letter-spacing: .06em; }
.news-body h3 { margin: .55rem 0 .6rem; font-size: 1.08rem; }
.news-body h3 a { color: var(--c-dark); }
.news-body h3 a:hover { color: var(--c-primary); }
.news-body p { color: var(--c-muted); font-size: .92rem; flex: 1; }
.news-more { margin-top: 1rem; font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: .35rem; }
.news-more::after { content: "→"; transition: transform .3s var(--ease); }
.news-card:hover .news-more::after { transform: translateX(5px); }

.pagination { display: flex; justify-content: center; gap: .6rem; margin-top: 3rem; }
.pagination a, .pagination span {
  min-width: 42px; height: 42px; padding: 0 .9rem; border-radius: 10px; display: grid; place-items: center;
  border: 1px solid var(--c-border); background: var(--c-surface); color: var(--c-text); font-weight: 600;
}
.pagination a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pagination .cur { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

/* ---------- Article (news detail) ---------- */
.article-wrap { display: grid; grid-template-columns: 1fr 320px; gap: 2.6rem; align-items: start; }
.article-main { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 2.6rem; box-shadow: var(--shadow-sm); }
.article-meta { display: flex; flex-wrap: wrap; gap: 1.2rem; color: var(--c-muted); font-size: .86rem; margin-bottom: 1.6rem; }
.article-main h2 { font-size: 1.45rem; margin: 2.1rem 0 .9rem; padding-left: .9rem; border-left: 4px solid var(--c-primary); }
.article-main h3 { margin: 1.6rem 0 .7rem; }
.article-main p { margin-bottom: 1.05rem; color: #39496b; }
.article-main figure { margin: 1.8rem 0; }
.article-main figure img { border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.article-main figcaption { text-align: center; font-size: .84rem; color: var(--c-muted); margin-top: .6rem; }
.article-main blockquote {
  margin: 1.6rem 0; padding: 1.2rem 1.5rem; border-left: 4px solid var(--c-accent);
  background: rgba(34, 211, 238, .07); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--c-text);
}
.article-main .article-list { margin: 0 0 1.1rem 1.2rem; }
.article-main .article-list li { list-style: disc; margin-bottom: .45rem; color: #39496b; }
.tag-row { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 2rem; padding-top: 1.6rem; border-top: 1px dashed var(--c-border); }
.tag-row a { padding: .3rem .95rem; border-radius: 999px; font-size: .83rem; background: rgba(30, 107, 255, .08); color: var(--c-primary); }
.tag-row a:hover { background: var(--c-primary); color: #fff; }
.article-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2rem; }
.article-pn a { padding: 1.1rem 1.3rem; border: 1px solid var(--c-border); border-radius: var(--radius-sm); background: var(--c-surface); color: var(--c-text); font-weight: 600; font-size: .92rem; transition: border-color .3s, box-shadow .3s; }
.article-pn a:hover { border-color: var(--c-primary); box-shadow: var(--shadow-sm); color: var(--c-primary); }
.article-pn a small { display: block; color: var(--c-muted); font-weight: 400; font-size: .78rem; margin-bottom: .3rem; }
.article-pn a.next { text-align: right; }

.aside-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.6rem; box-shadow: var(--shadow-sm); margin-bottom: 1.6rem; }
.aside-card h3 { font-size: 1.05rem; margin-bottom: 1.1rem; padding-bottom: .7rem; border-bottom: 2px solid rgba(30, 107, 255, .15); }
.aside-news li { margin-bottom: 1rem; }
.aside-news a { color: var(--c-text); font-size: .92rem; font-weight: 500; display: block; }
.aside-news a:hover { color: var(--c-primary); }
.aside-news time { font-size: .78rem; color: var(--c-muted); }
.aside-cta { text-align: center; background: linear-gradient(160deg, var(--c-dark), var(--c-dark-2)); color: #fff; border: none; }
.aside-cta h3 { color: #fff; border-color: rgba(255, 255, 255, .15); }
.aside-cta p { color: rgba(230, 240, 255, .7); font-size: .88rem; margin-bottom: 1.2rem; }

/* ---------- Products ---------- */
.product-block { display: grid; grid-template-columns: 1fr 1fr; gap: 3.2rem; align-items: center; padding: 2.8rem 0; }
.product-block + .product-block { border-top: 1px dashed var(--c-border); }
.product-block:nth-child(even) .product-media { order: 2; }
.product-media { position: relative; }
.product-media img { border-radius: var(--radius); box-shadow: var(--shadow-md); }
.product-media .chip {
  position: absolute; left: 1.1rem; bottom: 1.1rem; padding: .4rem 1rem; border-radius: 999px;
  background: rgba(10, 23, 48, .78); color: var(--c-accent); font-size: .8rem; font-weight: 700; letter-spacing: .1em;
  backdrop-filter: blur(4px);
}
.product-body h3 { font-size: 1.6rem; margin-bottom: .3rem; }
.product-body .sub { color: var(--c-primary); font-weight: 600; font-size: .95rem; letter-spacing: .06em; display: block; margin-bottom: 1rem; }
.product-body p { color: var(--c-muted); margin-bottom: 1.2rem; }
.spec-list { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem 1.4rem; margin-bottom: 1.4rem; }
.spec-list li { position: relative; padding-left: 1.5rem; font-size: .93rem; }
.spec-list li::before { content: "▸"; position: absolute; left: 0; color: var(--c-primary); font-weight: 800; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; align-items: stretch; }
.price-card {
  position: relative; background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 2.4rem 2rem; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.price-card.hot { border: 2px solid var(--c-primary); box-shadow: 0 20px 50px rgba(30, 107, 255, .2); }
.price-card .ribbon {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  padding: .28rem 1.2rem; border-radius: 999px; font-size: .78rem; font-weight: 700; letter-spacing: .1em;
  color: #fff; background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  box-shadow: 0 8px 20px rgba(30, 107, 255, .4);
}
.price-card h3 { font-size: 1.2rem; }
.price-card .amount { margin: 1.1rem 0 .2rem; font-size: 2.5rem; font-weight: 900; color: var(--c-dark); }
.price-card .amount small { font-size: .9rem; font-weight: 500; color: var(--c-muted); }
.price-card .desc { color: var(--c-muted); font-size: .9rem; margin-bottom: 1.5rem; }
.price-card ul { flex: 1; margin-bottom: 1.8rem; }
.price-card ul li { padding: .5rem 0 .5rem 1.6rem; position: relative; font-size: .93rem; border-bottom: 1px dashed var(--c-border); }
.price-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--c-primary); font-weight: 800; }
.price-card ul li.off { color: #9aa8c2; }
.price-card ul li.off::before { content: "—"; color: #c3cde0; }

/* ---------- About ---------- */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }
.value-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 2rem 1.8rem; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.value-card .v-icon { width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center; font-size: 1.45rem; margin-bottom: 1.1rem; background: linear-gradient(135deg, rgba(30, 107, 255, .12), rgba(34, 211, 238, .14)); }
.value-card p { color: var(--c-muted); font-size: .94rem; margin-top: .5rem; }

.timeline { position: relative; max-width: 46rem; margin-inline: auto; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--c-primary), var(--c-accent)); }
.timeline li { position: relative; padding: 0 0 2.2rem 1.6rem; }
.timeline li::before {
  content: ""; position: absolute; left: -2rem; top: 6px; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 4px solid var(--c-primary); box-shadow: 0 0 0 5px rgba(30, 107, 255, .15);
}
.timeline b { display: block; color: var(--c-primary); font-size: 1.05rem; margin-bottom: .25rem; }
.timeline p { color: var(--c-muted); font-size: .95rem; }

.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
.team-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); text-align: center; transition: transform .35s var(--ease), box-shadow .35s var(--ease); }
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.team-card img { aspect-ratio: 1/1; object-fit: cover; width: 100%; }
.team-card .t-body { padding: 1.2rem 1rem 1.4rem; }
.team-card .t-body b { display: block; font-size: 1.05rem; }
.team-card .t-body span { font-size: .85rem; color: var(--c-primary); font-weight: 600; }
.team-card .t-body p { font-size: .84rem; color: var(--c-muted); margin-top: .5rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 2.6rem; align-items: start; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.contact-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 1.6rem 1.4rem; box-shadow: var(--shadow-sm); transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact-card .c-icon { font-size: 1.5rem; margin-bottom: .7rem; }
.contact-card b { display: block; margin-bottom: .3rem; }
.contact-card p { color: var(--c-muted); font-size: .9rem; }
.contact-form-wrap { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 2.4rem; box-shadow: var(--shadow-sm); }
.contact-form-wrap h2 { font-size: 1.5rem; margin-bottom: .4rem; }
.contact-form-wrap > p { color: var(--c-muted); font-size: .92rem; margin-bottom: 1.8rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .45rem; }
.form-group label i { color: #e5484d; font-style: normal; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .8rem 1rem; border: 1.5px solid var(--c-border); border-radius: var(--radius-sm);
  background: #fbfcff; transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(30, 107, 255, .12); background: #fff;
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-success {
  display: none; margin-top: 1.2rem; padding: 1rem 1.3rem; border-radius: var(--radius-sm);
  background: rgba(34, 197, 94, .1); border: 1px solid rgba(34, 197, 94, .35); color: #15803d; font-weight: 500;
}
.form-success.show { display: block; animation: fadeInUp .5s var(--ease); }
.map-box { margin-top: 2.6rem; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); position: relative; }
.map-box img { width: 100%; }
.map-box .map-pin {
  position: absolute; left: 50%; top: 44%; transform: translate(-50%, -100%);
  background: var(--c-dark); color: #fff; padding: .5rem 1.1rem; border-radius: 999px; font-size: .85rem; font-weight: 600;
  box-shadow: var(--shadow-md);
}
.map-box .map-pin::after { content: ""; position: absolute; left: 50%; bottom: -6px; transform: translateX(-50%); border: 7px solid transparent; border-top-color: var(--c-dark); }

/* ---------- Footer ---------- */
.site-footer { background: linear-gradient(180deg, var(--c-dark), #060d1e); color: rgba(230, 240, 255, .72); margin-top: 5rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2.4rem; padding: 4rem 0 2.6rem; }
.footer-brand { display: flex; align-items: center; gap: .7rem; color: #fff; margin-bottom: 1.1rem; }
.footer-col p { font-size: .9rem; color: rgba(230, 240, 255, .6); }
.footer-col h3 { color: #fff; font-size: 1.02rem; margin-bottom: 1.1rem; position: relative; padding-bottom: .6rem; }
.footer-col h3::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--c-primary), var(--c-accent)); }
.footer-col ul li { margin-bottom: .6rem; }
.footer-col ul a { color: rgba(230, 240, 255, .66); font-size: .92rem; }
.footer-col ul a:hover { color: var(--c-accent); }
.footer-contact li { display: flex; gap: .6rem; margin-bottom: .7rem; font-size: .9rem; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 1.4rem 0 1.6rem; text-align: center; font-size: .85rem; color: rgba(230, 240, 255, .45); }
.footer-bottom p + p { margin-top: .3rem; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; right: 1.4rem; bottom: 1.6rem; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark)); color: #fff; font-size: 1.1rem;
  box-shadow: 0 12px 28px rgba(30, 107, 255, .45);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { transform: translateY(-4px); }

/* ---------- Reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid, .news-grid, .pricing-grid, .values-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid, .stats-band, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 2.6rem; padding: 4rem 0 3.6rem; }
  .hero-lead { max-width: 100%; }
  .article-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-menu {
    position: fixed; inset: var(--header-h) 0 auto 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: .3rem;
    background: rgba(8, 18, 40, .97); backdrop-filter: blur(16px);
    padding: 1.2rem 1.4rem 1.6rem; border-bottom: 1px solid rgba(255, 255, 255, .1);
    transform: translateY(-115%); transition: transform .4s var(--ease);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: .85rem 1.1rem; border-radius: 12px; }
  .service-row, .product-block { grid-template-columns: 1fr; gap: 1.8rem; }
  .service-row:nth-child(even) .service-media, .product-block:nth-child(even) .product-media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 15px; }
  .section { padding: 3.6rem 0; }
  .features-grid, .news-grid, .pricing-grid, .values-grid, .steps-grid, .stats-band, .team-grid, .contact-cards, .form-row, .spec-list { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.4rem; }
  .hero-actions .btn { width: 100%; }
  .cta-band .btn-outline { margin-left: 0; margin-top: .8rem; }
  .cta-band { padding: 3rem 1.4rem; }
  .article-main { padding: 1.6rem; }
  .article-pn { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; padding: 3rem 0 2rem; }
  .price-card.hot { transform: none; }
}