/* =========================================================
   智量思维（陕西）健康科技有限公司 · 官网设计系统
   目标读者：30+ 中老年用户及其子女 —— 大字号、高对比、暖色点缀
   组件清单见文件头注释，所有栏目页共用本文件
   ========================================================= */

:root {
  --c-ink: #2b2320;
  --c-ink-2: #4d3f5a;
  --c-muted: #857a90;
  --c-brand-pink: #c2318b;      /* LOGO 品红渐变端 */  --c-primary: #4b1d7a;      /* 品牌深紫（LOGO 主色） */
  --c-primary-2: #6b30a8;
  --c-teal: #4e9a26;         /* LOGO 绿点：健康 */
  --c-accent: #f6a51f;       /* LOGO 橙点：行动 */
  --c-accent-2: #b3600e;
  --c-bg: #f9f6fb;           /* 浅紫白背景 */
  --c-bg-2: #f0eaf5;
  --c-card: #ffffff;
  --c-line: #e5dcef;
  --c-danger: #b3402e;
  --radius: 14px;
  --radius-s: 10px;
  --shadow: 0 10px 30px rgba(50, 20, 80, 0.08);
  --shadow-lg: 0 18px 48px rgba(50, 20, 80, 0.14);
  --container: 1180px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;              /* 中老年友好基准字号 */
  line-height: 1.8;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--c-primary-2); text-decoration: none; }
a:hover { color: var(--c-teal); }
h1, h2, h3, h4 { line-height: 1.35; margin: 0 0 .6em; color: var(--c-primary); font-weight: 700; }
h1 { font-size: clamp(30px, 4.4vw, 46px); }
h2 { font-size: clamp(24px, 3.2vw, 34px); }
h3 { font-size: 21px; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.4em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 76px 0; }
.section--alt { background: var(--c-card); }
.section--tight { padding: 52px 0; }
.eyebrow {
  display: inline-block; font-size: 14px; font-weight: 700; letter-spacing: .12em;
  color: var(--c-teal); background: rgba(78, 154, 38, .09);
  border: 1px solid rgba(78, 154, 38, .25); border-radius: 999px;
  padding: 4px 14px; margin-bottom: 14px;
}
.section-head { max-width: 780px; margin-bottom: 42px; }
.section-head p { color: var(--c-ink-2); font-size: 18px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 10px 28px; border-radius: 999px;
  font-size: 18px; font-weight: 700; border: 2px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--c-primary); color: #fff; box-shadow: 0 8px 20px rgba(75, 29, 122, .28); }
.btn--primary:hover { background: var(--c-primary-2); color: #fff; }
.btn--accent { background: var(--c-accent); color: #4a2f06; box-shadow: 0 8px 20px rgba(246, 165, 31, .35); }
.btn--accent:hover { background: #f2b455; color: #4a2f06; }
.btn--ghost { background: transparent; color: var(--c-primary); border-color: var(--c-primary); }
.btn--ghost:hover { background: rgba(75, 29, 122, .06); color: var(--c-primary); }
.btn--light { background: #fff; color: var(--c-primary); }
.btn--block { width: 100%; }

/* ---------------- 页头（所有页面共用） ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-line);
}
.site-header.is-scrolled { box-shadow: var(--shadow); }
.site-header__inner {
  display: flex; align-items: center; gap: 22px;
  max-width: var(--container); margin: 0 auto; padding: 12px 24px; min-height: 74px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--c-primary); }
.brand:hover { color: var(--c-primary); }
.brand__mark {
  width: 46px; height: 46px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, var(--c-brand-pink) 0%, var(--c-primary) 100%);
  color: #fff; font-weight: 800; font-size: 19px;
  display: flex; align-items: center; justify-content: center; letter-spacing: 1px;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__text strong { font-size: 19px; letter-spacing: .04em; }
.brand__text small { font-size: 12.5px; color: var(--c-muted); }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.main-nav a {
  padding: 8px 13px; border-radius: 8px; font-size: 16.5px; font-weight: 600; color: var(--c-ink-2);
  white-space: nowrap;
}
.main-nav a:hover { color: var(--c-primary); background: rgba(75, 29, 122, .06); }
.main-nav a.is-active { color: var(--c-primary); background: rgba(75, 29, 122, .08); }
.header-cta { display: flex; align-items: center; gap: 10px; }
.header-cta .btn { min-height: 44px; padding: 6px 20px; font-size: 16px; }
.nav-toggle {
  display: none; width: 48px; height: 48px; border: 1px solid var(--c-line); border-radius: 10px;
  background: #fff; cursor: pointer; align-items: center; justify-content: center; margin-left: auto;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2.5px; background: var(--c-primary);
  border-radius: 2px; position: relative; transition: transform .2s ease;
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }

/* ---------------- 首页 Hero ---------------- */
.hero {
  background:
    radial-gradient(1100px 480px at 88% -10%, rgba(78, 154, 38, .16), transparent 60%),
    radial-gradient(900px 420px at -8% 110%, rgba(246, 165, 31, .18), transparent 55%),
    linear-gradient(160deg, #ffffff 0%, var(--c-bg) 70%);
  padding: 74px 0 60px; overflow: hidden;
}
.hero__inner { display: grid; grid-template-columns: 1.08fr .92fr; gap: 48px; align-items: center; }
.hero__title { margin-bottom: 10px; }
.hero__title em { font-style: normal; color: var(--c-teal); }
.hero__subtitle { font-size: clamp(20px, 2.6vw, 26px); color: var(--c-accent-2); font-weight: 800; letter-spacing: .06em; margin-bottom: 14px; }
.hero__desc { font-size: 18px; color: var(--c-ink-2); max-width: 560px; }
.hero__points { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 26px; padding: 0; list-style: none; }
.hero__points li {
  font-size: 15.5px; font-weight: 600; color: var(--c-primary);
  background: #fff; border: 1px solid var(--c-line); border-radius: 999px; padding: 6px 16px;
  box-shadow: 0 3px 10px rgba(50, 20, 80, .05);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__visual { position: relative; }
.hero__bottle {
  width: min(360px, 78%); margin: 0 auto; aspect-ratio: 5 / 8; border-radius: 40% 40% 26% 26% / 14% 14% 8% 8%;
  background: linear-gradient(165deg, #9a5cc9 0%, var(--c-primary) 46%, #2f1152 100%);
  box-shadow: var(--shadow-lg); position: relative; display: flex; align-items: center; justify-content: center;
}
.hero__bottle::before {
  content: ""; position: absolute; top: -26px; left: 50%; transform: translateX(-50%);
  width: 34%; height: 46px; border-radius: 12px 12px 6px 6px; background: #341256;
}
.hero__bottle-label {
  width: 78%; background: rgba(255, 255, 255, .96); border-radius: 14px; padding: 18px 16px;
  text-align: center; color: var(--c-primary);
}
.hero__bottle-label strong { display: block; font-size: 19px; letter-spacing: .05em; }
.hero__bottle-label span { font-size: 13.5px; color: var(--c-muted); display: block; margin-top: 4px; }
.hero__bottle-label em { display: block; font-style: normal; margin-top: 10px; font-size: 14.5px; font-weight: 700; color: var(--c-accent-2); }
.hero__float {
  position: absolute; background: #fff; border: 1px solid var(--c-line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 10px 16px; font-size: 14.5px; font-weight: 700; color: var(--c-primary);
}
.hero__float--1 { top: 8%; left: 0; }
.hero__float--2 { bottom: 16%; right: -1%; color: var(--c-teal); }
.hero__float small { display: block; font-weight: 400; color: var(--c-muted); font-size: 12.5px; }

/* ---------------- 内页 Hero / 面包屑 ---------------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 90% 0%, rgba(78, 154, 38, .2), transparent 60%),
    linear-gradient(150deg, var(--c-primary) 0%, #2f1152 78%);
  color: #fff; padding: 60px 0 52px;
}
.page-hero h1 { color: #fff; }
.page-hero p { color: rgba(255, 255, 255, .85); font-size: 19px; max-width: 820px; margin: 0; }
.page-hero .eyebrow { color: #ffc8e6; background: rgba(246, 165, 31, .16); border-color: rgba(246, 165, 31, .4); }
.breadcrumb { font-size: 14.5px; margin-bottom: 26px; }
.breadcrumb a { color: rgba(255, 255, 255, .75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span[aria-current] { color: #ffc8e6; }
.breadcrumb--light a { color: var(--c-muted); }
.breadcrumb--light span[aria-current] { color: var(--c-primary); }

/* ---------------- 栅格与卡片 ---------------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow); position: relative;
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card h3 { margin-top: 14px; }
.card p { color: var(--c-ink-2); font-size: 16.5px; margin-bottom: 0; }
.card__num {
  font-size: 13px; font-weight: 800; color: var(--c-accent-2); letter-spacing: .14em; margin-bottom: 6px;
}
.card__icon {
  width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(75, 29, 122, .08), rgba(78, 154, 38, .12)); margin-bottom: 6px;
}
.card__icon svg { width: 30px; height: 30px; stroke: var(--c-teal); fill: none; stroke-width: 1.8; }
.card--link { display: block; color: inherit; }
.card--link:hover { color: inherit; }
.card__foot { margin-top: 16px; font-weight: 700; color: var(--c-primary-2); font-size: 15.5px; }
.card__foot::after { content: " →"; transition: margin .15s ease; }
.card--link:hover .card__foot::after { margin-left: 6px; }
.card__tag {
  position: absolute; top: 18px; right: 18px; font-size: 12.5px; font-weight: 700;
  color: var(--c-teal); background: rgba(78, 154, 38, .1); border-radius: 999px; padding: 3px 12px;
}

/* 勾选列表 */
.list-check { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.list-check li { position: relative; padding-left: 34px; color: var(--c-ink-2); }
.list-check li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(78, 154, 38, .14) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234e9a26' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/12px no-repeat;
}

/* ---------------- 信任条 / 徽章 ---------------- */
.trust-strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 26px 28px; box-shadow: var(--shadow);
}
.trust-item { display: flex; gap: 14px; align-items: flex-start; }
.trust-item__icon {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(135deg, var(--c-brand-pink), var(--c-primary));
  color: #fff; font-weight: 800; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.trust-item strong { display: block; font-size: 16.5px; color: var(--c-primary); line-height: 1.4; }
.trust-item small { color: var(--c-muted); font-size: 14px; display: block; margin-top: 2px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700;
  color: var(--c-primary); background: #fff; border: 1px solid var(--c-line);
  border-radius: 999px; padding: 6px 16px; box-shadow: 0 2px 8px rgba(50, 20, 80, .05);
}
.badge--teal { color: var(--c-teal); border-color: rgba(78, 154, 38, .35); }
.badge--amber { color: var(--c-accent-2); border-color: rgba(246, 165, 31, .45); }
.pill-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------------- 数字条 ---------------- */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  background: linear-gradient(150deg, var(--c-primary) 0%, #2f1152 100%);
  border-radius: var(--radius); padding: 40px 34px; color: #fff;
}
.stat strong { display: block; font-size: clamp(30px, 3.6vw, 42px); font-weight: 800; color: #ffc8e6; line-height: 1.2; }
.stat span { font-size: 15.5px; color: rgba(255, 255, 255, .82); }
.stats__note { grid-column: 1 / -1; margin: 6px 0 0; font-size: 13px; color: rgba(255, 255, 255, .55); }

/* ---------------- 表格 ---------------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
table.spec-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: 16px; }
.spec-table th, .spec-table td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.spec-table thead th { background: rgba(75, 29, 122, .06); color: var(--c-primary); font-size: 15.5px; white-space: nowrap; }
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody tr:hover { background: rgba(78, 154, 38, .04); }
.spec-table td strong { color: var(--c-primary); }
.spec-table .is-sample { color: var(--c-accent-2); font-weight: 700; white-space: nowrap; }

/* ---------------- 时间线 / 步骤 ---------------- */
.timeline { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.timeline li { position: relative; padding: 0 0 34px 44px; }
.timeline li::before {
  content: ""; position: absolute; left: 15px; top: 34px; bottom: 0; width: 2px; background: var(--c-line);
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li:last-child::before { display: none; }
.timeline li::after {
  content: ""; position: absolute; left: 8px; top: 8px; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 4px solid var(--c-teal);
}
.timeline h3 { font-size: 18.5px; margin-bottom: 4px; }
.timeline p { color: var(--c-ink-2); font-size: 16px; margin: 0; }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.steps li { counter-increment: step; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow); position: relative; }
.steps li::before {
  content: "0" counter(step); display: block; font-size: 30px; font-weight: 800; color: rgba(78, 154, 38, .35); margin-bottom: 8px;
}
.steps h3 { font-size: 18px; margin-bottom: 6px; }
.steps p { font-size: 15px; color: var(--c-ink-2); margin: 0; }

/* ---------------- FAQ 手风琴 ---------------- */
.faq { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-s); overflow: hidden; }
.faq-item__q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  font: inherit; font-weight: 700; font-size: 17.5px; color: var(--c-primary);
  padding: 18px 52px 18px 22px; position: relative;
}
.faq-item__q::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 26px; font-weight: 400; color: var(--c-teal); transition: transform .2s ease;
}
.faq-item.is-open .faq-item__q::after { content: "−"; }
.faq-item__a { display: none; padding: 0 22px 18px; color: var(--c-ink-2); font-size: 16.5px; border-top: 1px dashed var(--c-line); }
.faq-item.is-open .faq-item__a { display: block; padding-top: 14px; }
.faq-item__a p:last-child { margin-bottom: 0; }

/* ---------------- 双 CTA 横幅 ---------------- */
.cta-split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.cta-panel {
  border-radius: var(--radius); padding: 44px 38px; color: #fff; position: relative; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-panel--primary { background: linear-gradient(140deg, var(--c-primary) 0%, #2f1152 100%); }
.cta-panel--teal { background: linear-gradient(140deg, var(--c-brand-pink) 0%, var(--c-primary) 100%); }
.cta-panel h2 { color: #fff; font-size: 26px; }
.cta-panel p { color: rgba(255, 255, 255, .85); font-size: 16.5px; }
.cta-panel .btn { margin-top: 10px; }
.cta-panel ul { margin: 14px 0 22px; padding: 0; list-style: none; display: grid; gap: 8px; }
.cta-panel ul li { padding-left: 26px; position: relative; color: rgba(255, 255, 255, .9); font-size: 15.5px; }
.cta-panel ul li::before { content: "✓"; position: absolute; left: 0; color: #ffc8e6; font-weight: 800; }

/* ---------------- 表单 ---------------- */
.form { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 34px 30px; box-shadow: var(--shadow); max-width: 720px; }
.form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.form .field { display: flex; flex-direction: column; gap: 8px; }
.form .field--full { grid-column: 1 / -1; }
.form label { font-weight: 700; font-size: 15.5px; color: var(--c-primary); }
.form label em { font-style: normal; color: var(--c-danger); margin-left: 4px; }
.form input, .form select, .form textarea {
  font: inherit; font-size: 16.5px; color: var(--c-ink);
  border: 1.5px solid var(--c-line); border-radius: var(--radius-s); padding: 12px 16px; min-height: 50px;
  background: #fff; transition: border-color .15s ease, box-shadow .15s ease; width: 100%;
}
.form textarea { min-height: 130px; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--c-teal); box-shadow: 0 0 0 4px rgba(78, 154, 38, .12);
}
.form__note { font-size: 14px; color: var(--c-muted); margin-top: 14px; }
.form__success { display: none; margin-top: 16px; padding: 14px 18px; border-radius: var(--radius-s); background: rgba(78, 154, 38, .1); border: 1px solid rgba(78, 154, 38, .35); color: var(--c-teal); font-weight: 700; }
.form__success.is-visible { display: block; }

/* 联系信息卡 */
.info-card { display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-s); padding: 22px 24px; }
.info-card__icon { flex: none; width: 48px; height: 48px; border-radius: 12px; background: rgba(75, 29, 122, .07); display: flex; align-items: center; justify-content: center; font-size: 22px; }
.info-card strong { display: block; color: var(--c-primary); font-size: 17px; }
.info-card p { margin: 4px 0 0; color: var(--c-ink-2); font-size: 16px; }
.info-card small { color: var(--c-muted); }

/* ---------------- 提示块 ---------------- */
.callout { border-radius: var(--radius-s); padding: 18px 22px; font-size: 15.5px; border: 1px solid; margin-bottom: 26px; }
.callout--info { background: rgba(75, 29, 122, .05); border-color: rgba(75, 29, 122, .22); color: var(--c-ink-2); }
.callout--warn { background: rgba(246, 165, 31, .1); border-color: rgba(246, 165, 31, .45); color: #7d4f0a; }
.callout--comply { background: rgba(179, 64, 46, .06); border-color: rgba(179, 64, 46, .3); color: #7c3123; }
.callout strong { color: inherit; }

/* 锚点组件（成分页 tabs / 各页小节锚点） */
.anchor-offset { scroll-margin-top: 96px; }

/* ---------------- 页脚 ---------------- */
.footer { background: #26113d; color: rgba(255, 255, 255, .78); margin-top: 0; }
.footer a { color: rgba(255, 255, 255, .78); }
.footer a:hover { color: #ffc8e6; }
.footer__grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 34px;
  max-width: var(--container); margin: 0 auto; padding: 58px 24px 40px;
}
.footer__brand p { font-size: 15px; color: rgba(255, 255, 255, .6); }
.footer__brand .brand { color: #fff; margin-bottom: 14px; }
.footer__brand .brand__text small { color: rgba(255, 255, 255, .55); }
.footer__col h4 { color: #fff; font-size: 16.5px; margin-bottom: 14px; }
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: 15.5px; }
.footer__bottom { border-top: 1px solid rgba(255, 255, 255, .12); }
.footer__bottom-inner {
  max-width: var(--container); margin: 0 auto; padding: 20px 24px 26px;
  font-size: 13.5px; color: rgba(255, 255, 255, .5); display: grid; gap: 8px;
}
.footer .disclaimer { font-size: 13.5px; color: rgba(255, 255, 255, .55); line-height: 1.7; }

/* 返回顶部 */
.back-top {
  position: fixed; right: 22px; bottom: 26px; width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-primary); color: #fff; border: none; cursor: pointer; font-size: 20px;
  box-shadow: var(--shadow-lg); opacity: 0; pointer-events: none; transition: opacity .2s ease;
  z-index: 60;
}
.back-top.is-visible { opacity: 1; pointer-events: auto; }

/* ---------------- 动效 ---------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .trust-strip { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }
  .nav-toggle { display: flex; }
  .main-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--c-line); flex-direction: column;
    align-items: stretch; padding: 10px 16px 16px; box-shadow: var(--shadow-lg); gap: 2px;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 13px 14px; font-size: 17.5px; border-radius: 10px; }
  .header-cta { display: none; }
  .grid-3, .cta-split { grid-template-columns: 1fr; }
  .form .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .trust-strip { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .hero { padding: 48px 0 40px; }
}