/* ===========================================================
   昆明钢宁贸易 — 纯静态 · 苹果设计语言（排版精修版）
   对标 apple.com：紧字距、标准行高、精准间距节奏
   =========================================================== */

:root {
  /* 苹果文字色阶 */
  --ink: #1d1d1f;
  --ink-2: #424245;
  --gray: #6e6e73;
  --gray-2: #86868b;

  /* 背景与分隔 */
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --line: #d2d2d7;
  --line-soft: #e8e8ed;

  /* 苹果蓝 */
  --blue: #0071e3;
  --blue-hover: #0077ed;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* 苹果标准文本宽度 980px；宽屏栅格 1200px */
  --maxw: 980px;
  --maxw-wide: 1200px;
  --nav-h: 48px;

  /* 苹果缓动 */
  --ease: cubic-bezier(0.28, 0.11, 0.32, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  /* 苹果正文：17px / 行高 1.47059 / 字距 -0.022em */
  font-size: 17px;
  line-height: 1.47059;
  letter-spacing: -0.022em;
  overflow-x: hidden;
}

a { color: var(--blue); text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }

::selection { background: rgba(0, 113, 227, 0.15); }

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}
.container--wide { max-width: var(--maxw-wide); }

/* 苹果间距节奏：标准区块 80–120px，紧凑区块 56–88px */
.section { padding: clamp(80px, 9vw, 120px) 0; }
.section--tight { padding: clamp(56px, 6vw, 88px) 0; }
.section--alt { background: var(--bg-alt); }

/* ---------- 标题层级（苹果标准字距 + 字重 600） ---------- */
.h-display {
  font-size: clamp(40px, 6vw, 56px);
  line-height: 1.08365;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-wrap: balance;
}
.h1 {
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.08365;
  font-weight: 600;
  letter-spacing: -0.003em;
  text-wrap: balance;
}
.h2 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: -0.002em;
  text-wrap: balance;
}
.h3 {
  font-size: clamp(21px, 2.2vw, 24px);
  line-height: 1.16667;
  font-weight: 600;
  letter-spacing: -0.001em;
}

.eyebrow {
  display: block;
  font-size: 19px;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--blue);
  margin-bottom: 16px;
}

/* 苹果正文/引导文案：17–19px，灰色，紧字距 */
.lead {
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.47;
  color: var(--gray);
  font-weight: 400;
  letter-spacing: -0.022em;
}
.body-gray { color: var(--gray); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto clamp(44px, 6vw, 64px); }
.section-head .lead { margin-top: 14px; }

/* ---------- 按钮（苹果胶囊形） ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 28px;
  padding: 12px 22px;
  border-radius: 980px;
  background: var(--blue);
  color: #fff;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.022em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
  white-space: nowrap;
}
.btn:hover { background: var(--blue-hover); }
.btn:active { transform: scale(0.98); }
.btn--large { padding: 16px 30px; font-size: 19px; }

.link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--blue);
  font-size: 17px;
  letter-spacing: -0.022em;
}
.link::after {
  content: "\203A";
  font-size: 20px;
  line-height: 1;
  transform: translateY(-1px);
  transition: transform 0.25s var(--ease);
}
.link:hover { text-decoration: underline; }
.link:hover::after { transform: translate(3px, -1px); }

.btn--ghost {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn--ghost:hover { background: var(--blue); color: #fff; }

/* ---------- 玻璃拟态导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 300;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease);
}
.nav.is-scrolled { border-bottom-color: rgba(0, 0, 0, 0.08); }

.nav .inner {
  height: 100%;
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand__mark {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}
.brand__name { white-space: nowrap; }
.brand__logo {
  width: 28px;
  height: 28px;
  object-fit: cover;
  object-position: 50% 0;
  border-radius: 6px;
  display: block;
}

/* 锚点跳转预留固定导航高度，避免标题被压在导航栏下面 */
#products, #cases, #process, #advantages, #faq, #news, #contact {
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav__links a {
  position: relative;
  color: var(--ink);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: -0.01em;
  opacity: 0.68;
  padding: 6px 0;
  transition: opacity 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.nav__links a:hover { opacity: 1; }

/* 当前栏目：加深加粗 + 底部蓝色指示条 */
.nav__links a.is-active {
  opacity: 1;
  font-weight: 500;
  color: #000;
}
.nav__links a.is-active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  border-radius: 1px;
  background: var(--blue);
}

.nav__cta { font-size: 14px; padding: 7px 16px; flex-shrink: 0; }

.nav__toggle {
  display: none;
  width: 34px; height: 34px;
  position: relative;
  background: transparent;
  border: none;
  cursor: pointer;
}
.nav__toggle i {
  position: absolute;
  left: 7px;
  width: 20px; height: 1px;
  background: var(--ink);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
}
.nav__toggle i:nth-child(1) { top: 13px; }
.nav__toggle i:nth-child(2) { top: 20px; }
.nav.is-open .nav__toggle i:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.nav.is-open .nav__toggle i:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding-top: 0; }

.hero__text {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  min-height: 100vh;        /* 第一屏：Hero 文字占满整屏 */
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;  /* 文字垂直居中，底部停在「获取报价」 */
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 56px;
  box-sizing: border-box;
}
.hero__text .eyebrow { margin-bottom: 32px; }
.hero__text .lead { margin-top: 52px; }

.hero__actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 72px;
}

/* 大图容器：圆角 + 视差缩放 */
.hero__media {
  position: relative;
  margin-top: clamp(48px, 6vw, 80px);
  border-radius: 22px;
  overflow: hidden;
  background: var(--bg-alt);
  aspect-ratio: 16 / 9;
}
.hero__media img {
  position: absolute;
  top: -6%;
  bottom: -6%;
  left: 0;
  right: 0;
  width: 100%;
  height: auto;
  object-fit: cover;
  will-change: transform;
}

/* ---------- 数据条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat { padding: 8px 12px; }
.stat__num {
  font-size: clamp(38px, 5vw, 56px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}
.stat__num em {
  font-style: normal;
  font-size: 0.55em;
  color: var(--blue);
  font-weight: 600;
}
.stat__label {
  margin-top: 8px;
  font-size: 17px;
  color: var(--gray);
  letter-spacing: -0.022em;
}

/* ---------- 产品卡 ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border-radius: 22px;
  overflow: hidden;
  transition: transform 0.5s var(--ease);
}
.card:hover { transform: translateY(-6px); }
.card__media {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: var(--bg-alt);
  aspect-ratio: 4 / 3;
}
.card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
  transition: transform 0.7s var(--ease);
}
.card:hover .card__media img { transform: scale(1.09); }

.card__body { padding: 28px 4px 0; text-align: center; }
.card__body h3 { margin-bottom: 8px; }
.card__body p { color: var(--gray); font-size: 15px; margin-bottom: 14px; }
.card__spec {
  font-size: 13px;
  color: var(--gray-2);
  letter-spacing: 0;
  margin-bottom: 16px;
}

/* ---------- 流程步骤 ---------- */
/* 服务流程：占满整屏 */
#process {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(48px, 6vw, 80px);
  padding-bottom: clamp(48px, 6vw, 80px);
  box-sizing: border-box;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 34px;
}
.step__no {
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--blue);
  opacity: 0.28;
  margin-bottom: 14px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--gray); font-size: 15px; }

/* ---------- 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media {
  border-radius: 22px;
  overflow: hidden;
  background: var(--bg-alt);
}
.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transform: scale(1.03);
  transition: transform 0.8s var(--ease);
}
.split__media:hover img { transform: scale(1.07); }
.split__body .lead { margin: 16px 0 18px; }
.split__body p { color: var(--gray); margin-bottom: 14px; }

/* ---------- 优势卡片 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.adv {
  background: var(--bg-alt);
  border-radius: 22px;
  padding: clamp(30px, 4vw, 46px);
  transition: background 0.4s var(--ease);
}
.adv:hover { background: #ececee; }
.adv__no {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.adv__title { margin-bottom: 10px; }
.adv__desc { color: var(--gray); font-size: 16px; }

/* ---------- 新闻列表 ---------- */
.news-list { border-top: 1px solid var(--line-soft); }
.news-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 26px 4px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink);
  transition: background 0.35s var(--ease);
}
.news-item:hover { background: var(--bg-alt); }
.news-item__date { font-size: 14px; color: var(--gray-2); }
.news-item__title { font-size: 19px; font-weight: 600; letter-spacing: -0.022em; margin-bottom: 4px; }
.news-item__excerpt { font-size: 15px; color: var(--gray); }
.news-item__arrow {
  font-size: 24px;
  color: var(--blue);
  transition: transform 0.3s var(--ease);
}
.news-item:hover .news-item__arrow { transform: translateX(6px); }

/* ---------- 二维码卡片 ---------- */
.qr-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 980px;
  margin: 0 auto;
}
.qr-card {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  border-radius: 22px;
  overflow: hidden;
  transition: transform 0.5s var(--ease);
}
.qr-card:hover { transform: translateY(-6px); }
.qr-card__media {
  aspect-ratio: 1 / 1;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}
.qr-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.qr-card__body {
  padding: 26px 24px 28px;
  text-align: center;
}
.qr-card__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(0, 113, 227, 0.08);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.qr-card__title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.022em;
  margin-bottom: 8px;
  color: var(--ink);
}
.qr-card__desc {
  font-size: 15px;
  line-height: 1.5;
  color: var(--gray);
  margin-bottom: 16px;
}
.qr-card__action {
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  padding: clamp(80px, 9vw, 120px) 0;
}
.cta__actions {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* ---------- 联系信息 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.contact-cell {
  background: var(--bg-alt);
  border-radius: 18px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.contact-cell dt {
  font-size: 14px;
  color: var(--gray-2);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.contact-cell dd { font-size: 19px; font-weight: 500; color: var(--ink); letter-spacing: -0.01em; }
.contact-cell a { color: var(--blue); text-decoration: none; }
.contact-cell a:hover { text-decoration: underline; }

/* 定位/地图格：地图风格背景 */
.contact-cell--map {
  background-color: #e8f0f8;
  background-image:
    linear-gradient(rgba(74,122,178,0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,122,178,0.16) 1px, transparent 1px),
    linear-gradient(135deg, rgba(74,122,178,0.10) 0 22%, transparent 22%);
  background-size: 20px 20px, 20px 20px, 110px 110px;
  position: relative;
  overflow: hidden;
}
.contact-cell--map::before {
  content: "\1F4CD";
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 24px;
  line-height: 1;
  opacity: 0.9;
}
.contact-cell--map dt,
.contact-cell--map dd { position: relative; z-index: 1; }
.contact-cell--lead dt { font-size: 15px; letter-spacing: 0.06em; }
.contact-cell--lead dd { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; white-space: nowrap; }
.contact-cell--small dt { font-size: 13px; }
.contact-cell--small dd { font-size: 15px; font-weight: 400; }

/* ---------- 页脚（苹果式浅灰 + 12px 小字） ---------- */
.footer {
  background: var(--bg-alt);
  padding: 44px 0 30px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}
.footer__cols {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.footer h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}
.footer li { margin-bottom: 7px; }
.footer li a { color: var(--gray); }
.footer li a:hover { color: var(--ink); text-decoration: underline; }
.footer__brand p { margin: 8px 0 12px; max-width: 300px; }
.footer__tagline {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 980px;
  background: rgba(0, 113, 227, 0.1);
  color: var(--blue);
  font-size: 12px;
}
.footer__bottom {
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer__note { color: #a15c00; }

/* ---------- 回到顶部 ---------- */
.totop {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 200;
  width: 42px; height: 42px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.4s var(--ease);
}
.totop.is-visible { opacity: 1; visibility: visible; transform: none; }
.totop:hover { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ---------- 滚动叙事 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: 0.08s; }
.reveal--d2 { transition-delay: 0.16s; }
.reveal--d3 { transition-delay: 0.24s; }
.reveal--d4 { transition-delay: 0.32s; }

.zoom-in { transform: scale(1.06); transition: transform 1.6s var(--ease); }
.zoom-in.is-in { transform: scale(1); }

/* ---------- 客户案例 ---------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 22px;
  overflow: hidden;
  transition: transform 0.5s var(--ease), box-shadow 0.4s var(--ease);
}
.case:hover { transform: translateY(-6px); box-shadow: 0 14px 36px rgba(0,0,0,.08); }
.case__media {
  position: relative;
  border-radius: 22px 22px 0 0;
  overflow: hidden;
  background: var(--bg-alt);
  aspect-ratio: 4 / 3;
}
.case__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
  transition: transform 0.7s var(--ease);
}
.case:hover .case__media img { transform: scale(1.09); }
.case__body { padding: 26px 26px 30px; text-align: center; }
.case__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.case__tag--cold { color: var(--blue); background: rgba(0,113,227,.08); }
.case__tag--galv { color: #c2410c; background: rgba(194,65,12,.08); }
.case__tag--az { color: #0f766e; background: rgba(15,118,110,.08); }
.case__title { margin-bottom: 10px; }
.case__desc { color: var(--gray); font-size: 15px; line-height: 1.6; }

/* ---------- 答案胶囊 / FAQ ---------- */
.capsule {
  max-width: 760px;
  margin: 0 auto clamp(28px, 4vw, 40px);
  padding: 16px 22px;
  background: var(--bg-alt);
  border-left: 3px solid var(--blue);
  border-radius: 12px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-2);
  letter-spacing: -0.01em;
}
.section--alt .capsule { background: #fff; }

.faq-list { max-width: 820px; margin: 0 auto; border-top: 1px solid var(--line-soft); }
.faq-item { border-bottom: 1px solid var(--line-soft); padding: 26px 4px; }
.faq-item__q {
  font-size: clamp(18px, 2vw, 20px);
  font-weight: 600;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin-bottom: 12px;
  display: flex;
  gap: 10px;
}
.faq-item__q::before {
  content: "Q";
  color: var(--blue);
  font-weight: 700;
  flex-shrink: 0;
}
.faq-item__a {
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray);
  letter-spacing: -0.01em;
  padding-left: 26px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: repeat(2, 1fr); }
  .qr-cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__cols { grid-template-columns: 1fr 1fr; gap: 28px; }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }

  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .nav.is-open .nav__links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--line-soft);
    padding: 8px 22px 20px;
  }
  .nav.is-open .nav__links a {
    width: 100%;
    padding: 13px 0 13px 12px;
    font-size: 17px;
    opacity: 0.8;
    border-bottom: 1px solid var(--line-soft);
  }
  .nav.is-open .nav__links a:last-child { border-bottom: none; }
  /* 移动端用左侧竖条代替底部横条 */
  .nav.is-open .nav__links a.is-active {
    opacity: 1;
    font-weight: 500;
    color: var(--blue);
  }
  .nav.is-open .nav__links a.is-active::after {
    left: 0; right: auto; bottom: 12px;
    width: 3px; height: calc(100% - 24px);
    border-radius: 2px;
  }
}

@media (max-width: 720px) {
  .container { padding: 0 18px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .cards { grid-template-columns: 1fr; gap: 32px; }
  .cases { grid-template-columns: 1fr; gap: 32px; }
  .qr-cards { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .adv-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr; gap: 22px; }
  .news-item { grid-template-columns: 1fr; gap: 10px; padding: 22px 4px; }
  .news-item__arrow { display: none; }
  .qr-card__media { padding: 24px; }
  .hero__media { border-radius: 16px; }
  .card__media, .split__media { border-radius: 16px; }
  .brand__name { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .zoom-in { transform: none; }
}