/* ========== Design Tokens ========== */
:root {
  /* Colors */
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-bg: #F6F7FB;
  --bg-alt: #f8fbff;
  --bg-soft: #f3f7ff;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-white: #ffffff;
  --color-success: #22c55e;
  --border: rgba(0, 0, 0, 0.08);

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans TC', system-ui, -apple-system, sans-serif;

  /* Layout - Section Template */
  --container: 1200px;
  --section-py: clamp(88px, 8vw, 128px);
  --section-gap: 32px;
  --hero-min: calc(100vh - var(--header-height));
  --grid-gap: 24px;

  /* Border radius */
  --radius-lg: 20px;
  --radius-card-sm: 14px;
  --radius-btn: 999px;

  /* Shadows */
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);

  /* Transitions */
  --transition-fast: 200ms ease;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

ul {
  list-style: none;
}

/* ========== Container ========== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Section Template (全站統一) ========== */
section[id] {
  scroll-margin-top: 90px;
}

.section {
  padding: var(--section-py) 0;
}

#top.section--hero {
  background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
}

#about {
  background: var(--bg-alt);
}

#vision {
  position: relative;
  overflow: hidden;
  background: #fff;
}

#vision::before {
  content: 'CYATH';
  position: absolute;
  inset: auto 4% 8% auto;
  font-size: clamp(72px, 14vw, 180px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(37, 99, 235, 0.045);
  pointer-events: none;
  user-select: none;
}

#ecosystem {
  background: var(--bg-soft);
}

#sy-idea {
  background: var(--bg-alt);
}

.section--screen {
  min-height: var(--hero-min);
  display: flex;
  align-items: center;
}

.section__head {
  max-width: 760px;
  margin: 0 auto var(--section-gap);
  text-align: center;
}

.section__kicker {
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 12px;
  color: var(--color-primary);
}

.section__title {
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.1;
  font-weight: 800;
  color: var(--color-text);
}

.section__desc {
  margin-top: 14px;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.section__body {
  margin-top: 0;
}

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

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ========== Card ========== */
.card {
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  height: 100%;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.25);
}

.card--dark {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
}

.card--dark .card__title,
.card--dark .card__subtitle,
.card--dark .card__desc {
  color: inherit;
}

.card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-card-sm);
  margin-bottom: 20px;
  flex-shrink: 0;
  overflow: hidden;
}

.card__icon .product-icon {
  display: block;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--color-text);
}

.card__subtitle {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.card__desc {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.card__list {
  margin-bottom: 20px;
}

.card__list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2322c55e'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") no-repeat;
  background-size: contain;
}

.card__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 6px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

.card__link:hover {
  color: var(--color-primary-dark);
  text-decoration-color: currentColor;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.25);
}

.btn--primary:hover {
  box-shadow: 0 14px 34px rgba(37, 99, 235, 0.32);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.06);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn--white:hover {
  box-shadow: var(--shadow-lg);
}

.btn--outline-white {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn--pill {
  border-radius: var(--radius-btn);
}

.btn--lg {
  min-height: 52px;
  padding: 0 32px;
  font-size: 1rem;
}

/* ========== Header ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header .container {
  padding-left: 48px;
}

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

.header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__logo {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.header__brand-name {
  font-weight: 600;
  font-size: 1.125rem;
}

.header__right {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-card-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav__item:hover {
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
}

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

.nav__item--dropdown {
  cursor: pointer;
}

.nav__chevron {
  transition: transform var(--transition-fast);
}

.nav__dropdown-wrapper {
  position: relative;
}

.nav__dropdown-wrapper.open .nav__chevron {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  min-width: 200px;
  padding: 8px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav__dropdown-wrapper.open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown__item {
  display: block;
  padding: 10px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-card-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown__item:hover {
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
}

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

.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-toggle {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding: 4px 8px;
}

.lang-toggle:hover,
.lang-toggle.active-zh .lang-toggle__zh,
.lang-toggle.active-en .lang-toggle__en {
  color: var(--color-primary);
}

.header__cta {
  min-height: 44px;
  padding: 0 20px;
  font-size: 0.9375rem;
}

.header__burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
}

.header__burger span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header__burger[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.header__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__burger[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: 200;
  overflow-y: auto;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 24px;
}

.mobile-menu__item {
  display: block;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-card-sm);
  transition: background var(--transition-fast);
}

.mobile-menu .lang-toggle {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 14px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
}

.mobile-menu .lang-toggle__slash {
  margin: 0 4px;
  color: var(--color-text-muted);
}

.mobile-menu__item:hover {
  background: rgba(37, 99, 235, 0.08);
}

.mobile-menu__item.active,
.mobile-menu__sub.active {
  color: var(--color-primary);
  font-weight: 600;
}

.mobile-menu__label {
  display: block;
  padding: 8px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.mobile-menu__sub {
  padding-left: 32px;
  font-size: 0.9375rem;
}

.mobile-menu__cta {
  margin-top: 16px;
  background: var(--color-text);
  color: var(--color-white) !important;
  text-align: center;
  border-radius: var(--radius-btn);
}

/* ========== Hero ========== */
.section--hero {
  background: var(--color-bg);
  text-align: center;
}

.hero__content {
  max-width: 880px;
  margin: 0 auto;
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 0;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.hero__line {
  display: block;
}

.hero__subtitle {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: 32px;
  margin-bottom: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-top: 56px;
}

/* ========== About ========== */
.about__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about__content .section__kicker {
  text-align: left;
}

.about__content .section__title {
  text-align: left;
}

.about__content .section__desc {
  text-align: left;
}

.about__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--grid-gap);
}

.about__visual {
  position: relative;
}

.about-terminal {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-terminal__header {
  display: flex;
  gap: 8px;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.2);
}

.about-terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
}

.about-terminal__body {
  padding: 24px 20px;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.8;
}

.about-terminal__body code {
  background: transparent;
}

.about-terminal__success {
  color: #86efac;
}

.about__badge {
  position: absolute;
  bottom: -12px;
  right: -12px;
  padding: 12px 18px;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ========== Ecosystem ========== */
.section--ecosystem .section__body {
  margin-top: 0;
}

/* ========== Compliance (section--dark) ========== */
.section--dark {
  position: relative;
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section--dark .section__head {
  text-align: left;
  max-width: 560px;
}

.section--dark .section__title,
.section--dark .section__desc {
  color: var(--color-white);
}

.section--dark .section__desc {
  color: rgba(255, 255, 255, 0.75);
}

.compliance__bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.section--dark .container {
  position: relative;
  z-index: 1;
}

/* ========== CTA ========== */
.section--cta {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: var(--color-white);
  text-align: center;
}

.section--cta .section__title {
  color: var(--color-white);
  font-size: clamp(1.75rem, 3vw, 2rem);
  letter-spacing: 0.05em;
}

.section--cta .section__desc {
  color: rgba(255, 255, 255, 0.9);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: var(--section-gap);
}

/* ========== Contact Page ========== */
.contact__grid {
  display: flex;
  justify-content: center;
}

.contact__card {
  text-align: center;
}

.contact__qr {
  width: 220px;
  height: 220px;
  margin: 0 auto var(--section-gap);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact__qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
}

.contact__qr-placeholder {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
}

.contact__qr-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.contact__info-card .card__desc a {
  color: var(--color-primary);
}

.contact__info-card .card__desc a:hover {
  text-decoration: underline;
}

/* ========== Whitepaper Dropdown ========== */
.wp-dropdown {
  position: relative;
}

.wp-dropdown__menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 200px;
  padding: 8px;
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 10;
}

.wp-dropdown.open .wp-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.wp-dropdown__item {
  display: block;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-card-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.wp-dropdown__item:hover {
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary);
}

@media (max-width: 600px) {
  .wp-dropdown {
    width: 100%;
  }
  .wp-dropdown .wp-dropdown__trigger {
    width: 100%;
  }
}

/* ========== Legal Document ========== */
.legal-doc {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 48px;
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.legal-doc__meta {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.legal-doc__heading {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 32px;
  margin-bottom: 12px;
}

.legal-doc p {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 12px;
}

.legal-doc__list {
  margin: 8px 0 16px 20px;
  list-style: disc;
}

.legal-doc__ol {
  margin: 8px 0 16px 20px;
  list-style: decimal;
}

.legal-doc__list li,
.legal-doc__ol li {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 6px;
  padding-left: 4px;
}

.legal-doc a {
  color: var(--color-primary);
}

.legal-doc a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .legal-doc {
    padding: 24px 20px;
  }
}

/* ========== Footer ========== */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--section-py) 0 0;
}

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

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer__tagline {
  font-size: 0.9375rem;
  max-width: 280px;
  line-height: 1.6;
}

.footer__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 12px;
}

.footer__col p,
.footer__col a {
  font-size: 0.9375rem;
  margin-bottom: 6px;
}

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

.footer__col--links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__col--links a {
  margin-bottom: 0;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 20px 0;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer__powered {
  font-size: 0.75rem;
}

/* ========== Product Page Template ========== */
.product-hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.product-hero__title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--color-text);
}

.product-hero__subtitle {
  font-size: 0.9375rem;
  color: var(--color-primary);
  font-weight: 600;
}

.product-hero__slogan {
  font-size: 1.25rem;
  color: var(--color-text-muted);
}

.product-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.product-hero__visual {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Hero + 核心描述 合一頁 */
.section--hero-with-desc .container {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.hero-page__core-desc {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.hero-page__core-desc .section__head {
  margin-bottom: 12px;
}

.hero-page__core-desc-text {
  margin-top: 0;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
}

.value-summary {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  box-shadow: var(--shadow-soft);
}

.value-summary__text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
  line-height: 1.6;
  padding-top: 8px;
}

.features-summary__body .grid {
  margin-bottom: 0;
  gap: 28px;
}

.value-summary--inline {
  margin-top: 24px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  padding: 44px 48px 56px;
}

.value-summary--inline .value-summary__text {
  padding-top: 32px;
}

/* 教研、家学页：slogan 白框上移，减少与功能卡片间距 */
.section--value-summary-tight {
  padding-top: 16px;
  padding-bottom: 48px;
}

/* 校策页：slogan 再上移一点 */
.section--value-summary-tighter {
  padding-top: 8px;
}

.product-features__icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 16px;
}

.product-features__text {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.6;
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .header__right {
    display: none;
  }

  .header__burger {
    display: flex;
  }

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

  .section__head {
    text-align: left;
  }

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

  .about__visual {
    order: -1;
  }

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

  .footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .product-hero__inner {
    grid-template-columns: 1fr;
  }

  .product-hero__visual {
    min-height: 220px;
    order: -1;
  }
}

@media (max-width: 600px) {
  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .cta__actions {
    flex-direction: column;
  }

  .cta__actions .btn {
    width: 100%;
  }

  .value-summary {
    padding: 28px 24px;
  }
}