/* 蛋链云官网 —— 品牌色取自标志：深海蓝（云）、科技青（光边）、蛋黄金（蛋） */
:root {
  --navy-900: #040f24;
  --navy-800: #061633;
  --navy-700: #0a2350;
  --navy-600: #0d3a8c;
  --blue: #1557c0;
  --cyan: #29c9f2;
  --gold: #f4b740;
  --gold-2: #ffd27a;
  --ink: #0e1b33;
  --ink-2: #4a5872;
  --line: #e4e9f2;
  --bg-soft: #f5f8fc;
  --white: #fff;
  --radius: 18px;
  --shadow: 0 20px 50px -20px rgba(6, 22, 51, .25);
  --container: 1200px;
  --nav-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: .02em; }
p { margin: 0; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.gold { color: var(--gold); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 52px; padding: 0 30px; border-radius: 999px;
  font-size: 16px; font-weight: 600; letter-spacing: .04em;
  transition: transform .25s, box-shadow .25s, background .25s, color .25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-gold { background: linear-gradient(135deg, var(--gold-2), var(--gold)); color: #3a2400; box-shadow: 0 12px 30px -10px rgba(244, 183, 64, .7); }
.btn-gold:hover { box-shadow: 0 16px 40px -10px rgba(244, 183, 64, .9); }
.btn-ghost { border: 1px solid rgba(255, 255, 255, .35); color: #fff; background: rgba(255, 255, 255, .04); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }

.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .32em; color: var(--cyan); margin-bottom: 14px; }
.eyebrow.dark { color: var(--blue); }

/* 导航 */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--nav-h);
  transition: background .3s, box-shadow .3s, height .3s;
}
.nav.scrolled { background: rgba(4, 15, 36, .86); backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px); box-shadow: 0 1px 0 rgba(255, 255, 255, .06); }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand img { width: 44px; filter: drop-shadow(0 0 10px rgba(41, 201, 242, .35)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 22px; letter-spacing: .12em; }
.brand-text small { font-size: 11px; letter-spacing: .3em; color: rgba(255, 255, 255, .6); }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a:not(.btn) { color: rgba(255, 255, 255, .82); font-size: 15px; position: relative; padding: 6px 0; transition: color .2s; }
.nav-links a:not(.btn)::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 0; height: 2px; background: var(--gold); transition: left .25s, right .25s; }
.nav-links a:not(.btn):hover, .nav-links a.active { color: #fff; }
.nav-links a:not(.btn):hover::after, .nav-links a.active::after { left: 0; right: 0; }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: none; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; margin: 5px 0; transition: transform .3s, opacity .3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 首屏 */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  background: radial-gradient(120% 90% at 75% 40%, #0d3a8c 0%, var(--navy-800) 55%, var(--navy-900) 100%);
  color: #fff; overflow: hidden; padding: calc(var(--nav-h) + 40px) 0 90px;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg .grid {
  position: absolute; inset: -2px;
  background-image: linear-gradient(rgba(41, 201, 242, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(41, 201, 242, .08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(70% 70% at 70% 45%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 70% at 70% 45%, #000 20%, transparent 75%);
}
.glow { position: absolute; border-radius: 50%; filter: blur(80px); }
.glow-a { width: 520px; height: 520px; right: 4%; top: 18%; background: rgba(41, 201, 242, .22); }
.glow-b { width: 380px; height: 380px; right: 18%; top: 40%; background: rgba(244, 183, 64, .18); }
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 40px; width: 100%; }
.hero h1 { font-size: clamp(40px, 6vw, 72px); font-weight: 800; letter-spacing: .06em; }
.hero h1 .gold { background: linear-gradient(120deg, var(--gold-2), var(--gold) 60%, #e89a1c); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin-top: 24px; max-width: 560px; font-size: 17px; color: rgba(255, 255, 255, .78); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 36px; }
.hero-tags { list-style: none; padding: 0; margin: 40px 0 0; display: flex; flex-wrap: wrap; gap: 10px 26px; color: rgba(255, 255, 255, .6); font-size: 14px; letter-spacing: .1em; }
.hero-tags li::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--gold); margin-right: 10px; vertical-align: middle; box-shadow: 0 0 10px var(--gold); }

.hero-visual { position: relative; aspect-ratio: 1; max-width: 540px; width: 100%; justify-self: center; display: grid; place-items: center; }
.halo { position: absolute; inset: 14%; border-radius: 50%; background: radial-gradient(circle, rgba(255, 255, 255, .95) 0%, rgba(214, 238, 255, .75) 38%, rgba(41, 201, 242, .12) 62%, transparent 72%); }
.hero-visual picture { position: relative; width: 62%; display: block; }
.hero-logo { position: relative; width: 100%; animation: float 6s ease-in-out infinite; filter: drop-shadow(0 24px 40px rgba(4, 15, 36, .45)); }
.orbit { position: absolute; border-radius: 50%; border: 1px dashed rgba(41, 201, 242, .35); animation: spin 40s linear infinite; }
.orbit-1 { inset: 4%; }
.orbit-2 { inset: -6%; border-style: solid; border-color: rgba(255, 255, 255, .08); animation-duration: 70s; animation-direction: reverse; }
.orbit i { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 16px var(--cyan); top: 50%; left: -6px; }
.orbit-2 i:first-child { background: var(--gold); box-shadow: 0 0 18px var(--gold); left: auto; right: -6px; top: 30%; }
.orbit-2 i:last-child { top: auto; bottom: 8%; left: 18%; }
.chip {
  position: absolute; display: flex; flex-direction: column; padding: 12px 18px; border-radius: 14px;
  background: rgba(8, 30, 68, .72); border: 1px solid rgba(41, 201, 242, .28); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 30px -12px rgba(0, 0, 0, .5); animation: float 7s ease-in-out infinite;
}
.chip b { font-size: 16px; letter-spacing: .08em; }
.chip span { font-size: 12px; color: rgba(255, 255, 255, .6); }
.chip-1 { left: -4%; top: 20%; }
.chip-2 { right: -6%; top: 46%; animation-delay: -2s; }
.chip-3 { left: 6%; bottom: 8%; animation-delay: -4s; }
.chip-2 b { color: var(--gold); }
.scroll-hint { position: absolute; left: 50%; bottom: 84px; transform: translateX(-50%); width: 26px; height: 42px; border: 2px solid rgba(255, 255, 255, .35); border-radius: 14px; }
.scroll-hint span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--gold); animation: wheel 1.8s ease-in-out infinite; }

@keyframes float { 50% { transform: translateY(-12px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes wheel { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* 数据带 */
.stats { position: relative; z-index: 2; margin-top: -56px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.stat { padding: 34px 28px; text-align: center; position: relative; }
.stat + .stat::before { content: ""; position: absolute; left: 0; top: 28%; bottom: 28%; width: 1px; background: var(--line); }
.stat b { display: block; font-size: 30px; font-weight: 800; color: var(--navy-600); letter-spacing: .04em; }
.stat span { display: block; margin-top: 6px; font-size: 14px; color: var(--ink-2); }

/* 通用区块 */
.section { padding: 120px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-head h2, .about-copy h2, .app-copy h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; }
.section-head p:last-child { margin-top: 16px; color: var(--ink-2); font-size: 17px; }
.section-head.light h2 { color: #fff; }
.section-head.light p:last-child { color: rgba(255, 255, 255, .7); }

/* 关于 */
.about { padding-top: 140px; }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; align-items: center; }
.about-media { position: relative; }
.about-card {
  aspect-ratio: 1; border-radius: 28px; display: grid; place-items: center; padding: 14%;
  background: radial-gradient(circle at 50% 35%, #fff 0%, #eef5ff 55%, #dfeaf9 100%);
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.about-card img { width: 100%; }
.about-badge {
  position: absolute; right: -24px; bottom: 36px; padding: 18px 26px; border-radius: 16px;
  background: linear-gradient(135deg, var(--navy-700), var(--navy-600)); color: #fff; box-shadow: var(--shadow);
  display: flex; flex-direction: column; line-height: 1.3;
}
.about-badge b { font-size: 26px; letter-spacing: .2em; color: var(--gold); }
.about-badge span { font-size: 13px; letter-spacing: .2em; color: rgba(255, 255, 255, .75); }
.about-copy p:not(.eyebrow) { margin-top: 20px; color: var(--ink-2); font-size: 16.5px; }
.about-copy strong { color: var(--ink); }
.checks { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 34px; font-weight: 500; }
.checks li::before { content: ""; position: absolute; left: 0; top: 4px; width: 22px; height: 22px; border-radius: 50%; background: linear-gradient(135deg, var(--gold-2), var(--gold)); }
.checks li::after { content: ""; position: absolute; left: 7px; top: 9px; width: 8px; height: 5px; border: solid #3a2400; border-width: 0 0 2px 2px; transform: rotate(-45deg); }

/* 业务卡片 */
.business { background: var(--bg-soft); }
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--white); border-radius: var(--radius); padding: 36px 32px; border: 1px solid var(--line);
  transition: transform .3s, box-shadow .3s, border-color .3s; position: relative; overflow: hidden;
}
.card::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: linear-gradient(90deg, var(--blue), var(--cyan), var(--gold)); transform: scaleX(0); transform-origin: left; transition: transform .4s; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::after { transform: scaleX(1); }
.card-icon { width: 60px; height: 60px; border-radius: 16px; display: grid; place-items: center; background: linear-gradient(135deg, var(--navy-700), var(--blue)); margin-bottom: 22px; }
.card-icon svg { width: 32px; height: 32px; fill: none; stroke: #fff; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.card-icon .hl { stroke: var(--gold); }
.card h3 { font-size: 20px; }
.card p { margin-top: 12px; color: var(--ink-2); font-size: 15px; }

/* 优势 */
.advantages { background: var(--navy-800); color: #fff; overflow: hidden; }
.adv-bg { position: absolute; inset: 0; background: radial-gradient(60% 60% at 15% 0%, rgba(21, 87, 192, .45), transparent 70%), radial-gradient(50% 50% at 95% 100%, rgba(244, 183, 64, .16), transparent 70%); }
.advantages .container { position: relative; }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255, 255, 255, .08); border-radius: var(--radius); overflow: hidden; }
.adv { background: var(--navy-800); padding: 40px 36px; transition: background .3s; }
.adv:hover { background: #0a1f47; }
.adv .num { font-size: 15px; font-weight: 700; color: var(--gold); letter-spacing: .1em; font-family: "DIN Alternate", "Helvetica Neue", Arial, sans-serif; }
.adv h3 { font-size: 21px; margin-top: 14px; }
.adv p { margin-top: 12px; color: rgba(255, 255, 255, .68); font-size: 15px; }

/* 客户类型 */
.tags { list-style: none; padding: 0; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; max-width: 980px; }
.tags li { padding: 12px 24px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); font-size: 15px; font-weight: 500; transition: all .25s; }
.tags li:hover { background: var(--navy-700); border-color: var(--navy-700); color: #fff; transform: translateY(-2px); }

/* 流程 */
.process { background: var(--bg-soft); }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; counter-reset: s; position: relative; }
.steps::before { content: ""; position: absolute; left: 8%; right: 8%; top: 32px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--cyan), var(--gold)); opacity: .5; }
.steps li { text-align: center; position: relative; }
.steps span { width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 50%; display: grid; place-items: center; font-size: 22px; font-weight: 800; color: var(--navy-600); background: var(--white); border: 2px solid var(--cyan); box-shadow: 0 0 0 8px var(--bg-soft); position: relative; }
.steps li:last-child span { border-color: var(--gold); color: #b97b00; }
.steps h3 { font-size: 18px; }
.steps p { margin-top: 8px; color: var(--ink-2); font-size: 14px; }

/* 小程序 */
.app { background: linear-gradient(120deg, var(--navy-900), var(--navy-700) 60%, #0e3f93); color: #fff; overflow: hidden; }
.app-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: center; }
.app-copy p:not(.eyebrow) { margin-top: 20px; color: rgba(255, 255, 255, .75); font-size: 17px; max-width: 560px; }
.phone { justify-self: center; width: 260px; aspect-ratio: 9 / 18.5; border-radius: 40px; padding: 12px; background: linear-gradient(160deg, #22355c, #0b1630); box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .7), inset 0 0 0 1px rgba(255, 255, 255, .12); transform: rotate(-6deg); }
.phone-screen { height: 100%; border-radius: 30px; background: #f6f7f9; overflow: hidden; display: flex; flex-direction: column; gap: 10px; padding-bottom: 14px; }
.ps-bar { background: linear-gradient(135deg, var(--gold-2), var(--gold)); color: #3a2400; font-size: 13px; font-weight: 700; padding: 34px 14px 14px; display: flex; align-items: center; gap: 8px; }
.ps-bar i { width: 18px; height: 22px; border-radius: 50% 50% 45% 45% / 60% 60% 40% 40%; background: #fff7e3; }
.ps-item { margin: 0 10px; background: #fff; border-radius: 12px; padding: 10px; display: grid; grid-template-columns: 44px 1fr; grid-template-rows: auto auto; gap: 6px 10px; }
.ps-item b { grid-row: span 2; width: 44px; height: 44px; border-radius: 10px; background: radial-gradient(circle at 40% 35%, #fff3d6, #f4c46a); }
.ps-item div { display: flex; flex-direction: column; gap: 6px; }
.ps-item em { display: block; height: 8px; border-radius: 4px; background: #e2e6ee; }
.ps-item em.s { width: 60%; }
.ps-item strong { font-size: 12px; color: #e8590c; }
.ps-btn { margin: auto 10px 0; height: 38px; border-radius: 19px; background: var(--navy-600); color: #fff; font-size: 13px; font-weight: 600; display: grid; place-items: center; }

/* 联系 */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  display: flex; flex-direction: column; align-items: flex-start; text-align: left; gap: 4px;
  padding: 34px 32px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--line);
  font: inherit; color: inherit; cursor: pointer; transition: transform .3s, box-shadow .3s, border-color .3s;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.contact-card.wide { grid-column: 1 / -1; cursor: default; }
.contact-card.wide:hover { transform: none; }
.ci { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, var(--gold-2), var(--gold)); margin-bottom: 14px; }
.ci svg { width: 26px; height: 26px; fill: none; stroke: #3a2400; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.contact-card span { font-size: 14px; color: var(--ink-2); letter-spacing: .1em; }
.contact-card b { font-size: 22px; color: var(--navy-700); word-break: break-all; }
.contact-card b.addr { font-size: 19px; line-height: 1.6; }
.contact-card small { font-size: 13px; color: #8a96ab; }

/* 页脚 */
.footer { background: var(--navy-900); color: rgba(255, 255, 255, .65); padding: 56px 0 28px; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { width: 52px; }
.footer-brand strong { display: block; color: #fff; font-size: 20px; letter-spacing: .12em; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-links a:hover, .footer-bottom a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 24px; font-size: 13px; }

/* 复制提示 */
.toast { position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px); background: rgba(4, 15, 36, .92); color: #fff; padding: 12px 22px; border-radius: 999px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s; z-index: 100; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 滚动渐显：仅在 JS 可用时隐藏，避免无脚本时内容不可见 */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); }
.js .reveal.in { opacity: 1; transform: none; }

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

/* 平板 */
@media (max-width: 1080px) {
  .nav-links { gap: 22px; }
  .cards-3, .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 44px; }
  .steps::before { display: none; }
  .about-grid { gap: 48px; }
}

/* 手机 */
@media (max-width: 860px) {
  :root { --nav-h: 64px; }
  .container { padding: 0 16px; }
  .nav { background: rgba(4, 15, 36, .9); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
  .brand img { width: 38px; }
  .brand-text strong { font-size: 19px; }
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 16px 24px; background: rgba(4, 15, 36, .97); border-top: 1px solid rgba(255, 255, 255, .06);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .25s, transform .25s, visibility .25s;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a:not(.btn) { padding: 15px 4px; border-bottom: 1px solid rgba(255, 255, 255, .06); font-size: 16px; }
  .nav-links a:not(.btn)::after { display: none; }
  .nav-cta { margin-top: 18px; height: 48px; }

  .hero { min-height: auto; padding: calc(var(--nav-h) + 36px) 0 110px; text-align: center; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-visual { order: -1; max-width: 300px; }
  .chip { padding: 8px 12px; }
  .chip b { font-size: 13px; }
  .chip span { display: none; }
  .chip-1 { left: -8%; top: 14%; }
  .chip-2 { right: -10%; }
  .chip-3 { left: 0; bottom: 4%; }
  .lead { font-size: 15.5px; margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-actions .btn { flex: 1 1 140px; height: 48px; padding: 0 18px; }
  .hero-tags { justify-content: center; gap: 8px 18px; font-size: 13px; }
  .scroll-hint { display: none; }

  .stats { margin-top: -60px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 24px 12px; }
  .stat + .stat::before { display: none; }
  .stat:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stat b { font-size: 22px; }
  .stat span { font-size: 12.5px; }

  .section { padding: 72px 0; }
  .about { padding-top: 80px; }
  .section-head { margin-bottom: 40px; }
  .section-head p:last-child { font-size: 15px; }
  .about-grid, .app-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-media { max-width: 340px; margin: 0 auto; width: 100%; }
  .about-badge { right: -8px; bottom: -18px; padding: 12px 18px; }
  .app-copy h2 { font-size: 25px; }
  .about-badge b { font-size: 20px; }
  .cards-3, .adv-grid, .contact-grid { grid-template-columns: 1fr; }
  .card { padding: 28px 24px; }
  .adv { padding: 30px 24px; }
  .tags { gap: 10px; }
  .tags li { padding: 9px 16px; font-size: 14px; }
  .steps { grid-template-columns: 1fr; gap: 0; text-align: left; }
  .steps li { display: grid; grid-template-columns: 52px 1fr; column-gap: 16px; text-align: left; padding-bottom: 26px; }
  .steps li:not(:last-child)::after { content: ""; position: absolute; left: 25px; top: 52px; bottom: 0; width: 2px; background: linear-gradient(var(--cyan), rgba(41, 201, 242, .15)); }
  .steps span { grid-row: span 2; width: 52px; height: 52px; margin: 0; font-size: 18px; box-shadow: none; }
  .steps h3 { padding-top: 4px; }
  .app-copy { text-align: center; }
  .app-copy p:not(.eyebrow) { margin-left: auto; margin-right: auto; font-size: 15.5px; }
  .phone { width: 210px; transform: none; }
  .contact-card { padding: 26px 22px; }
  .contact-card b { font-size: 19px; }
  .contact-card b.addr { font-size: 16px; }
  .footer-inner, .footer-bottom { flex-direction: column; align-items: flex-start; }
}