:root {
  --c-primary: #e63946;
  --c-primary-dark: #c1121f;
  --c-primary-light: #ff6b78;
  --c-accent: #f4a261;
  --c-accent-2: #457b9d;
  --c-accent-3: #2a9d8f;
  --c-bg: #fff8f8;
  --c-bg-alt: #ffffff;
  --c-surface: rgba(255, 255, 255, 0.72);
  --c-surface-solid: #ffffff;
  --c-text: #2b2b33;
  --c-text-soft: #5c5c6b;
  --c-text-muted: #8a8a99;
  --c-border: rgba(230, 57, 70, 0.14);
  --c-border-soft: rgba(43, 43, 51, 0.08);
  --c-shadow: 0 12px 36px rgba(193, 18, 31, 0.1);
  --c-shadow-hover: 0 20px 52px rgba(193, 18, 31, 0.18);
  --c-gradient: linear-gradient(135deg, #e63946 0%, #ff6b78 45%, #f4a261 100%);
  --c-gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.12), rgba(244, 162, 97, 0.14));
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --glass-blur: saturate(180%) blur(18px);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --maxw: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition: 0.32s var(--ease);
}

[data-theme="dark"] {
  --c-primary: #ff6b78;
  --c-primary-dark: #e63946;
  --c-primary-light: #ff9aa3;
  --c-accent: #f4a261;
  --c-accent-2: #6fa8d6;
  --c-accent-3: #4ecdc4;
  --c-bg: #14141b;
  --c-bg-alt: #1c1c26;
  --c-surface: rgba(30, 30, 42, 0.68);
  --c-surface-solid: #1e1e2a;
  --c-text: #f2f2f7;
  --c-text-soft: #c3c3d1;
  --c-text-muted: #8e8ea3;
  --c-border: rgba(255, 107, 120, 0.22);
  --c-border-soft: rgba(255, 255, 255, 0.08);
  --c-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  --c-shadow-hover: 0 20px 52px rgba(0, 0, 0, 0.6);
  --c-gradient: linear-gradient(135deg, #c1121f 0%, #e63946 45%, #f4a261 100%);
  --c-gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.22), rgba(244, 162, 97, 0.16));
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --c-primary: #ff6b78;
    --c-primary-dark: #e63946;
    --c-primary-light: #ff9aa3;
    --c-accent: #f4a261;
    --c-accent-2: #6fa8d6;
    --c-accent-3: #4ecdc4;
    --c-bg: #14141b;
    --c-bg-alt: #1c1c26;
    --c-surface: rgba(30, 30, 42, 0.68);
    --c-surface-solid: #1e1e2a;
    --c-text: #f2f2f7;
    --c-text-soft: #c3c3d1;
    --c-text-muted: #8e8ea3;
    --c-border: rgba(255, 107, 120, 0.22);
    --c-border-soft: rgba(255, 255, 255, 0.08);
    --c-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
    --c-shadow-hover: 0 20px 52px rgba(0, 0, 0, 0.6);
    --c-gradient: linear-gradient(135deg, #c1121f 0%, #e63946 45%, #f4a261 100%);
    --c-gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.22), rgba(244, 162, 97, 0.16));
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(1200px 600px at 10% -5%, rgba(230, 57, 70, 0.1), transparent 60%),
    radial-gradient(900px 500px at 95% 0%, rgba(244, 162, 97, 0.12), transparent 55%),
    radial-gradient(1000px 700px at 50% 110%, rgba(69, 123, 157, 0.1), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

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

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--c-primary-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--c-primary);
  outline-offset: 3px;
  border-radius: 6px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  margin: 0 0 0.6em;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  background: var(--c-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  position: relative;
  padding-bottom: 0.5em;
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--c-gradient);
}

h3 {
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
  color: var(--c-text);
}

p {
  margin: 0 0 1em;
  color: var(--c-text-soft);
}

ul,
ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
  color: var(--c-text-soft);
}

li {
  margin-bottom: 0.5em;
}

strong {
  color: var(--c-text);
}

blockquote {
  margin: 0 0 1.2em;
  padding: 1.1em 1.4em;
  border-left: 4px solid var(--c-primary);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--c-shadow);
}

blockquote p {
  margin: 0;
  color: var(--c-text-soft);
  font-style: italic;
}

time {
  font-variant-numeric: tabular-nums;
  color: var(--c-text-muted);
  font-size: 0.875rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 9999;
  padding: 0.7em 1.2em;
  border-radius: var(--radius-pill);
  background: var(--c-primary);
  color: #fff;
  font-weight: 700;
  box-shadow: var(--c-shadow);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 16px;
  color: #fff;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--c-surface);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--c-border-soft);
  box-shadow: 0 4px 24px rgba(193, 18, 31, 0.06);
  transition: background var(--transition), box-shadow var(--transition);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--c-text);
  font-weight: 800;
}

.logo svg {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(230, 57, 70, 0.35);
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: 0 10px 26px rgba(230, 57, 70, 0.5);
}

.logo-text {
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  background: var(--c-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.main-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav li {
  margin: 0;
}

.main-nav a {
  display: inline-block;
  padding: 0.45em 0.7em;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text-soft);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--c-primary);
  background: var(--c-gradient-soft);
  transform: translateY(-1px);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-form {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 4px 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-form:focus-within {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.12);
}

.search-form input[type="search"] {
  width: 190px;
  border: 0;
  background: transparent;
  color: var(--c-text);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.35em 0;
  outline: none;
}

.search-form input::placeholder {
  color: var(--c-text-muted);
}

.search-form button {
  border: 0;
  cursor: pointer;
  padding: 0.45em 1em;
  border-radius: var(--radius-pill);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: var(--c-gradient);
  box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.search-form button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(230, 57, 70, 0.45);
  filter: brightness(1.05);
}

.search-form button:active {
  transform: translateY(0) scale(0.97);
}

.theme-toggle,
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-surface-solid);
  color: var(--c-text);
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.theme-toggle:hover,
.menu-toggle:hover {
  transform: translateY(-2px) rotate(8deg);
  border-color: var(--c-primary);
  box-shadow: 0 8px 20px rgba(230, 57, 70, 0.22);
}

.menu-toggle {
  display: none;
}

main {
  display: block;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  margin: 28px 0 40px;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-xl);
  padding: clamp(28px, 5vw, 64px);
  color: #fff;
  background: var(--c-gradient);
  background-size: 200% 200%;
  animation: gradientShift 14s ease infinite;
  box-shadow: 0 24px 64px rgba(193, 18, 31, 0.28);
  overflow: hidden;
  isolation: isolate;
}

.hero-slider::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 85% 10%, rgba(255, 255, 255, 0.28), transparent 60%),
    radial-gradient(500px 280px at 0% 100%, rgba(255, 255, 255, 0.16), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.hero-slider::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.35);
  animation: spin 30s linear infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.slide {
  display: none;
  animation: fadeSlide 0.6s var(--ease) both;
}

.slide.is-active {
  display: block;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide h1,
.slide h2 {
  color: #fff;
  -webkit-text-fill-color: #fff;
  background: none;
  margin-bottom: 0.5em;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}

.slide h2::after {
  background: rgba(255, 255, 255, 0.85);
}

.slide p {
  color: rgba(255, 255, 255, 0.94);
  max-width: 62ch;
  font-size: clamp(0.95rem, 1.4vw, 1.08rem);
}

.hero-lead {
  margin-bottom: 1.4em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 1.6em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.8em 1.8em;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn-primary {
  background: #fff;
  color: var(--c-primary-dark);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  color: var(--c-primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.7);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.26);
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.22);
}

.btn:active {
  transform: translateY(-1px) scale(0.98);
}

.slider-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 2em;
}

.slider-controls .prev,
.slider-controls .next {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}

.slider-controls .prev:hover,
.slider-controls .next:hover {
  background: rgba(255, 255, 255, 0.34);
  transform: scale(1.08);
}

.dots {
  display: flex;
  gap: 8px;
  margin-left: 8px;
}

.dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: width var(--transition), background var(--transition);
}

.dots button.is-active {
  width: 28px;
  border-radius: var(--radius-pill);
  background: #fff;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.stat {
  padding: 22px 18px;
  border-radius: var(--radius-lg);
  background: var(--c-surface);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--c-border);
  box-shadow: var(--c-shadow);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.stat:hover {
  transform: translateY(-6px);
  box-shadow: var(--c-shadow-hover);
  border-color: var(--c-primary);
}

.stat .num {
  display: inline-block;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  line-height: 1.1;
  background: var(--c-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-variant-numeric: tabular-nums;
}

.stat .unit {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-left: 2px;
}

.stat p {
  margin: 6px 0 0;
  font-size: 0.82rem;
  color: var(--c-text-muted);
  letter-spacing: 0.02em;
}

.breadcrumb {
  margin: 0 0 28px;
  font-size: 0.875rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li {
  margin: 0;
  color: var(--c-text-muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--c-text-muted);
  opacity: 0.6;
}

.breadcrumb a {
  color: var(--c-text-soft);
  font-weight: 600;
}

.breadcrumb a:hover {
  color: var(--c-primary);
}

.breadcrumb [aria-current="page"] {
  color: var(--c-primary);
  font-weight: 700;
}

.section {
  position: relative;
  margin: 0 0 32px;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--radius-xl);
  background: var(--c-surface);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--c-border-soft);
  box-shadow: var(--c-shadow);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.section:hover {
  box-shadow: var(--c-shadow-hover);
}

.section > h2:first-child {
  margin-top: 0;
}

.section > p:first-of-type {
  font-size: 1.02rem;
  color: var(--c-text-soft);
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5em;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--c-primary), var(--c-accent));
  opacity: 0.4;
}

.timeline li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 1em;
  color: var(--c-text-soft);
  transition: transform var(--transition), color var(--transition);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-surface-solid);
  border: 3px solid var(--c-primary);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.12);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline li:hover {
  transform: translateX(6px);
  color: var(--c-text);
}

.timeline li:hover::before {
  transform: scale(1.2);
  box-shadow: 0 0 0 6px rgba(230, 57, 70, 0.18);
}

.timeline strong {
  display: inline-block;
  margin-right: 6px;
  color: var(--c-primary);
  font-weight: 800;
}

.author-box {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 22px;
  margin: 0 0 1.5em;
  border-radius: var(--radius-lg);
  background: var(--c-gradient-soft);
  border: 1px solid var(--c-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.author-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--c-shadow);
}

.author-box svg {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(230, 57, 70, 0.25);
}

.author-box p {
  margin-bottom: 0.6em;
}

.author-box p:last-child {
  margin-bottom: 0;
}

.feature-list,
.scenario-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.feature-list li,
.scenario-list li {
  position: relative;
  margin: 0;
  padding: 18px 20px 18px 52px;
  border-radius: var(--radius-md);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  color: var(--c-text-soft);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-list li::before,
.scenario-list li::before {
  content: "✓";
  position: absolute;
  left: 18px;
  top: 18px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  color: #fff;
  background: var(--c-gradient);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

.scenario-list li::before {
  content: "◆";
  font-size: 0.6rem;
}

.feature-list li:hover,
.scenario-list li:hover {
  transform: translateY(-5px);
  border-color: var(--c-primary);
  box-shadow: var(--c-shadow-hover);
}

#cases blockquote {
  position: relative;
  padding-top: 1.5em;
}

#cases blockquote::before {
  content: "“";
  position: absolute;
  left: 12px;
  top: -6px;
  font-size: 3.4rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--c-primary);
  opacity: 0.25;
}

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.news-list li {
  position: relative;
  margin: 0;
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  border-left: 4px solid var(--c-primary);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  transition: transform var(--transition), box-shadow var(--transition), border-left-color var(--transition);
}

.news-list li:hover {
  transform: translateX(6px);
  box-shadow: var(--c-shadow);
  border-left-color: var(--c-accent);
}

.news-list h3 {
  margin: 6px 0 8px;
  font-size: 1.08rem;
}

.news-list h3 a {
  color: var(--c-text);
}

.news-list h3 a:hover {
  color: var(--c-primary);
}

.news-list p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--c-text-muted);
}

#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  align-items: start;
}

#articles > h2,
#articles > p {
  grid-column: 1 / -1;
}

.article-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.article-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: var(--c-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}

.article-card:hover {
  transform: translateY(-8px);
  border-color: var(--c-border);
  box-shadow: var(--c-shadow-hover);
}

.article-card:hover::before {
  transform: scaleX(1);
}

.article-card h3 {
  margin-bottom: 0.4em;
  font-size: 1.08rem;
  line-height: 1.45;
}

.article-card h3 a {
  color: var(--c-text);
}

.article-card h3 a:hover {
  color: var(--c-primary);
}

.article-card .meta {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 0.9em;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.article-card p:not(.meta) {
  font-size: 0.92rem;
  color: var(--c-text-soft);
  flex: 1 1 auto;
}

.read-more {
  align-self: flex-start;
  margin-top: 0.4em;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--c-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.read-more::after {
  content: "→";
  transition: transform var(--transition);
}

.read-more:hover::after {
  transform: translateX(4px);
}

#howto ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0 0 1.4em;
  display: grid;
  gap: 12px;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  margin: 0;
  padding: 16px 20px 16px 60px;
  border-radius: var(--radius-md);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  color: var(--c-text-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #fff;
  background: var(--c-gradient);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--c-shadow);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-list details {
  border-radius: var(--radius-md);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

.faq-list details[open] {
  border-color: var(--c-border);
  box-shadow: var(--c-shadow);
  background: var(--c-surface);
}

.faq-list summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 52px 16px 20px;
  font-weight: 700;
  color: var(--c-text);
  transition: color var(--transition), background var(--transition);
  user-select: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--c-primary);
  background: var(--c-gradient-soft);
  transition: transform 0.35s var(--ease-bounce), background var(--transition), color var(--transition);
}

.faq-list details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  background: var(--c-gradient);
  color: #fff;
}

.faq-list summary:hover {
  color: var(--c-primary);
}

.faq-list details p {
  margin: 0;
  padding: 0 20px 18px;
  font-size: 0.94rem;
  color: var(--c-text-soft);
  animation: fadeSlide 0.4s var(--ease) both;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.contact-grid > div {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-grid > div:hover {
  transform: translateY(-5px);
  box-shadow: var(--c-shadow-hover);
}

.contact-grid h3 {
  margin-top: 0;
  color: var(--c-primary);
}

.contact-grid p {
  margin-bottom: 0.5em;
  font-size: 0.94rem;
}

.contact-grid svg {
  margin-top: 16px;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
}

.sitemap-list,
.friend-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sitemap-list li,
.friend-links li {
  margin: 0;
}

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 0.5em 1.1em;
  border-radius: var(--radius-pill);
  background: var(--c-surface-solid);
  border: 1px solid var(--c-border-soft);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text-soft);
  transition: transform var(--transition), color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.sitemap-list a:hover,
.friend-links a:hover {
  color: #fff;
  background: var(--c-gradient);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(230, 57, 70, 0.32);
}

#legal h3 {
  margin-top: 1.2em;
}

.site-footer {
  margin-top: 48px;
  padding: 48px 20px 24px;
  color: var(--c-text-soft);
  background: linear-gradient(180deg, transparent, rgba(230, 57, 70, 0.06));
  border-top: 1px solid var(--c-border-soft);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}

.site-footer h2 {
  font-size: 1.05rem;
  padding-bottom: 0.4em;
  margin-bottom: 0.8em;
}

.site-footer h2::after {
  width: 36px;
  height: 3px;
}

.site-footer p {
  font-size: 0.88rem;
  margin-bottom: 0.5em;
  color: var(--c-text-muted);
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li {
  margin-bottom: 0.5em;
}

.site-footer li a {
  font-size: 0.9rem;
  color: var(--c-text-soft);
  font-weight: 600;
}

.site-footer li a:hover {
  color: var(--c-primary);
}

.copyright {
  max-width: var(--maxw);
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-border-soft);
  text-align: center;
  font-size: 0.82rem;
  color: var(--c-text-muted);
}

#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  color: var(--c-primary);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--c-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), box-shadow var(--transition), background var(--transition);
}

#back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

#back-to-top:hover {
  background: var(--c-gradient);
  color: #fff;
  box-shadow: var(--c-shadow-hover);
  transform: translateY(-4px) scale(1.06);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }

@media (max-width: 1024px) {
  .header-inner {
    gap: 14px;
  }

  .main-nav a {
    padding: 0.4em 0.55em;
    font-size: 0.85rem;
  }

  .search-form input[type="search"] {
    width: 140px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 12px 20px 18px;
    background: var(--c-surface);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--c-border-soft);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.12);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.4s var(--ease), opacity var(--transition), visibility var(--transition);
    flex: none;
    width: 100%;
  }

  .main-nav.is-open {
    max-height: 70vh;
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 0.7em 1em;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }

  .search-form input[type="search"] {
    width: 120px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 10px;
    min-height: 64px;
  }

  .logo svg {
    width: 34px;
    height: 34px;
  }

  .logo-text {
    font-size: 1.05rem;
  }

  .search-form {
    display: none;
  }

  main {
    padding: 0 14px;
  }

  .hero {
    margin: 18px 0 26px;
  }

  .hero-slider {
    border-radius: var(--radius-lg);
    padding: 24px 20px;
  }

  .hero-actions {
    gap: 10px;
  }

  .btn {
    padding: 0.7em 1.4em;
    font-size: 0.9rem;
  }

  .hero-stats {
    gap: 10px;
  }

  .stat {
    padding: 16px 12px;
    border-radius: var(--radius-md);
  }

  .stat p {
    font-size: 0.75rem;
  }

  .section {
    border-radius: var(--radius-lg);
    padding: 20px 16px;
    margin-bottom: 22px;
  }

  h2::after {
    width: 48px;
    height: 3px;
  }

  .author-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 18px;
  }

  .feature-list,
  .scenario-list {
    grid-template-columns: 1fr;
  }

  #articles {
    grid-template-columns: 1fr;
  }

  .article-card {
    padding: 20px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .site-footer {
    padding: 36px 16px 20px;
  }

  #back-to-top {
    right: 14px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }

  blockquote {
    padding: 1em 1.1em;
  }
}

@media (max-width: 380px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

  .slider-controls {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  #back-to-top,
  .slider-controls,
  .hero-actions,
  .theme-toggle,
  .menu-toggle,
  .search-form {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section,
  .hero-slider,
  .stat,
  .article-card {
    box-shadow: none;
    border: 1px solid #ddd;
    background: #fff;
  }

  h1 {
    -webkit-text-fill-color: #000;
    color: #000;
    background: none;
  }
}