/* ============================================
   向日葵医疗健康 — Design System
   简约大气 · 专业可信赖 · 自然健康
   ============================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Color — Primary (Deep Emerald Green) */
  --green-50: oklch(96% 0.02 155);
  --green-100: oklch(92% 0.04 155);
  --green-200: oklch(85% 0.07 155);
  --green-300: oklch(75% 0.10 155);
  --green-400: oklch(62% 0.11 155);
  --green-500: oklch(50% 0.10 155);
  --green-600: oklch(42% 0.09 155);
  --green-700: oklch(35% 0.08 155);
  --green-800: oklch(28% 0.06 155);
  --green-900: oklch(22% 0.04 155);

  /* Color — Accent (Sunflower Gold) */
  --gold-50: oklch(97% 0.02 85);
  --gold-100: oklch(93% 0.05 85);
  --gold-200: oklch(88% 0.08 85);
  --gold-300: oklch(82% 0.11 85);
  --gold-400: oklch(76% 0.13 85);
  --gold-500: oklch(70% 0.14 85);
  --gold-600: oklch(60% 0.12 85);

  /* Warm-tinted Neutrals */
  --neutral-50: oklch(98% 0.005 85);
  --neutral-100: oklch(96% 0.008 85);
  --neutral-200: oklch(92% 0.01 85);
  --neutral-300: oklch(85% 0.01 85);
  --neutral-400: oklch(70% 0.01 85);
  --neutral-500: oklch(55% 0.01 85);
  --neutral-600: oklch(42% 0.01 85);
  --neutral-700: oklch(32% 0.01 85);
  --neutral-800: oklch(24% 0.01 85);
  --neutral-900: oklch(18% 0.01 85);

  /* Semantic */
  --success: oklch(55% 0.13 150);
  --warning: oklch(70% 0.15 70);
  --error: oklch(55% 0.18 25);
  --info: oklch(55% 0.12 240);

  /* Semantic Aliases */
  --color-primary: var(--green-600);
  --color-primary-light: var(--green-100);
  --color-primary-dark: var(--green-800);
  --color-accent: var(--gold-500);
  --color-accent-light: var(--gold-100);
  --color-accent-dark: var(--gold-600);

  --bg-base: var(--neutral-50);
  --bg-surface: oklch(99% 0.004 85);
  --bg-surface-alt: var(--neutral-100);
  --bg-dark: var(--green-900);

  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-600);
  --text-muted: var(--neutral-400);
  --text-inverse: var(--neutral-50);
  --text-on-primary: oklch(98% 0.01 85);
  --text-on-accent: var(--neutral-900);

  --border-light: var(--neutral-200);
  --border-default: var(--neutral-300);
  --border-strong: var(--neutral-400);

  /* Typography */
  --font-heading: "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-body: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 3.5vw, 3.5rem);
  --text-5xl: clamp(2.75rem, 1.8rem + 5vw, 4.5rem);

  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;

  /* Spacing — 4pt base */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-wide: 1400px;
  --header-height: 4.5rem;

  /* Shadows — subtle, warm */
  --shadow-xs: 0 1px 2px oklch(20% 0.01 85 / 0.04);
  --shadow-sm: 0 1px 3px oklch(20% 0.01 85 / 0.06), 0 1px 2px oklch(20% 0.01 85 / 0.04);
  --shadow-md: 0 4px 12px oklch(20% 0.01 85 / 0.08), 0 2px 4px oklch(20% 0.01 85 / 0.04);
  --shadow-lg: 0 12px 32px oklch(20% 0.01 85 / 0.10), 0 4px 8px oklch(20% 0.01 85 / 0.06);
  --shadow-xl: 0 24px 56px oklch(20% 0.01 85 / 0.14), 0 8px 16px oklch(20% 0.01 85 / 0.08);
  --shadow-green: 0 8px 24px oklch(42% 0.09 155 / 0.20);

  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* Z-index */
  --z-header: 100;
  --z-dropdown: 200;
  --z-modal-backdrop: 300;
  --z-modal: 310;
  --z-toast: 400;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

::selection {
  background-color: var(--green-200);
  color: var(--green-900);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); font-weight: 700; }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  max-width: 65ch;
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: 1px;
  background-color: var(--color-accent);
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: var(--container-wide); }

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section--tight {
  padding-block: clamp(var(--space-12), 5vw, var(--space-20));
}

.section--dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--neutral-50);
}

.section--alt {
  background-color: var(--bg-surface-alt);
}

.bg-gradient-green {
  background: linear-gradient(135deg, var(--green-800) 0%, var(--green-600) 100%);
}

.bg-gradient-soft {
  background: linear-gradient(180deg, var(--neutral-50) 0%, var(--green-50) 100%);
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background-color: oklch(99% 0.004 85 / 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
  background-color: oklch(99% 0.004 85 / 0.95);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

.logo:hover {
  color: var(--text-primary);
}

.logo__icon {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo__text small {
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.nav__link:hover {
  color: var(--color-primary);
  background-color: var(--green-50);
}

.nav__link.active {
  color: var(--color-primary);
  font-weight: 600;
}

.nav__link.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-primary);
}

.nav__toggle:hover {
  background-color: var(--neutral-100);
}

.nav__toggle svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--text-on-primary);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background-color: var(--green-700);
  color: var(--text-on-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-green);
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--text-on-accent);
  box-shadow: var(--shadow-sm);
}

.btn--accent:hover {
  background-color: var(--gold-600);
  color: var(--text-on-accent);
  transform: translateY(-1px);
}

.btn--outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-default);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--green-50);
}

.btn--ghost {
  background-color: transparent;
  color: var(--text-secondary);
  padding-inline: var(--space-4);
}

.btn--ghost:hover {
  color: var(--color-primary);
  background-color: var(--green-50);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn--block {
  width: 100%;
}

.btn svg {
  width: 1.125rem;
  height: 1.125rem;
}

/* ---------- Cards ---------- */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: var(--green-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card--flat:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border-light);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background-color: var(--green-50);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.card__icon--gold {
  background-color: var(--gold-50);
  color: var(--gold-600);
}

.card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.card p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

/* ---------- Section Header ---------- */
.section-header {
  max-width: 720px;
  margin-bottom: var(--space-16);
}

.section-header--center {
  margin-inline: auto;
  text-align: center;
}

.section-header h2 {
  margin-top: var(--space-4);
  margin-bottom: var(--space-5);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(var(--header-height) + var(--space-20));
  padding-bottom: var(--space-24);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__bg::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 50rem;
  height: 50rem;
  background: radial-gradient(circle, var(--green-100) 0%, transparent 70%);
  opacity: 0.6;
}

.hero__bg::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 40rem;
  height: 40rem;
  background: radial-gradient(circle, var(--gold-100) 0%, transparent 70%);
  opacity: 0.5;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero h1 {
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
  max-width: 580px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero__stats {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-20);
  padding-top: var(--space-10);
  border-top: 1px solid var(--border-light);
}

.stat__value {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ---------- Feature List ---------- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.feature-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.feature-item__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background-color: var(--green-50);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.feature-item__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.feature-item__content h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
  font-family: var(--font-body);
}

.feature-item__content p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

/* ---------- Product Card ---------- */
.product-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  transition: all var(--duration-normal) var(--ease-out);
}

.product-card:hover {
  border-color: var(--green-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card__image {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--green-100), var(--gold-100));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card__image svg {
  width: 50%;
  height: 50%;
  opacity: 0.8;
}

.product-card__body {
  padding: var(--space-6);
}

.product-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--green-50);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.product-card h4 {
  font-size: var(--text-lg);
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.product-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: var(--space-12);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-12);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-12));
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--bg-base);
  border: 3px solid var(--color-primary);
}

.timeline__year {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.timeline__title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
}

.timeline__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ---------- Cert Badge ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
  gap: var(--space-6);
}

.cert-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.cert-badge:hover {
  border-color: var(--gold-300);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.cert-badge__icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: var(--gold-50);
  color: var(--gold-600);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.cert-badge__icon svg {
  width: 1.75rem;
  height: 1.75rem;
}

.cert-badge__title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.cert-badge__desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ---------- Form ---------- */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(50% 0.10 155 / 0.12);
}

.form-textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

/* ---------- Contact Info ---------- */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-info__icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background-color: var(--green-50);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.contact-info__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.contact-info__label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.contact-info__value {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

/* ---------- CTA Section ---------- */
.cta-section {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-12), 6vw, var(--space-24));
  text-align: center;
}

.cta-section h2 {
  color: var(--neutral-50);
  margin-bottom: var(--space-5);
}

.cta-section p {
  color: oklch(85% 0.02 155);
  font-size: var(--text-lg);
  margin-inline: auto;
  margin-bottom: var(--space-10);
  max-width: 540px;
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--neutral-900);
  color: var(--neutral-400);
  padding-top: var(--space-20);
  padding-bottom: var(--space-10);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer__brand .logo {
  color: var(--neutral-50);
  margin-bottom: var(--space-5);
}

.footer__brand p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--neutral-400);
  max-width: 320px;
}

.footer__col h5 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--neutral-200);
  margin-bottom: var(--space-5);
  font-family: var(--font-body);
  letter-spacing: var(--tracking-wide);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__col a {
  font-size: var(--text-sm);
  color: var(--neutral-400);
}

.footer__col a:hover {
  color: var(--gold-400);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid oklch(30% 0.01 85);
  font-size: var(--text-xs);
  color: var(--neutral-500);
}

/* ---------- FAQ / Details ---------- */
details summary {
  list-style: none;
}

details summary::-webkit-details-marker {
  display: none;
}

details summary svg {
  transition: transform var(--duration-normal) var(--ease-out);
}

details[open] summary svg {
  transform: rotate(180deg);
}

details[open] summary {
  color: var(--color-primary);
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.hidden { display: none; }

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 2fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--duration-normal) var(--ease-out);
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__link {
    padding: var(--space-4);
    border-radius: var(--radius-md);
  }

  .nav__link.active::after {
    display: none;
  }

  .nav__toggle {
    display: inline-flex;
  }

  .nav__actions .btn:not(.nav__toggle) {
    display: none;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .grid--auto {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero__stats {
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }

  .section-header {
    margin-bottom: var(--space-12);
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-4);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .hero__stats {
    gap: var(--space-6);
  }

  .stat__value {
    font-size: var(--text-3xl);
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}