:root {
  --sakura-50: #fff7fa;
  --sakura-100: #fdeef4;
  --sakura-200: #f9dbe7;
  --sakura-300: #f7c8d8;
  --sakura-400: #f2a9c4;
  --sakura-500: #e58aa8;
  --sakura-600: #d16b8d;
  --sakura-700: #b04f70;
  --blue-100: #eef5fa;
  --blue-200: #dce9f2;
  --blue-300: #cfe0ec;
  --blue-400: #a9c9de;
  --blue-500: #8fb8d6;
  --sand-100: #fbf6f0;
  --sand-200: #f0e2d4;
  --sand-300: #e0c9b3;
  --sand-400: #c9a37f;
  --plum-300: #d9b8e0;
  --plum-400: #c9a3d6;
  --ink-900: #2b2430;
  --ink-800: #3d3442;
  --ink-700: #574b5d;
  --ink-600: #726578;
  --ink-500: #8d8093;
  --ink-400: #a99eb0;
  --ink-300: #c8bfce;
  --ink-200: #e4dfe8;
  --ink-100: #f2eff4;
  --bg: #fdfbfc;
  --bg-alt: #f9f4f7;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.72);
  --surface-glass-strong: rgba(255, 255, 255, 0.86);
  --border: rgba(43, 36, 48, 0.08);
  --border-strong: rgba(43, 36, 48, 0.14);
  --shadow-sm: 0 2px 8px rgba(112, 78, 96, 0.06);
  --shadow-md: 0 8px 24px rgba(112, 78, 96, 0.09);
  --shadow-lg: 0 18px 48px rgba(112, 78, 96, 0.13);
  --shadow-glow: 0 12px 36px rgba(229, 138, 168, 0.28);
  --grad-hero: linear-gradient(135deg, #fff3f8 0%, #fde7f0 32%, #eef4fb 68%, #f6f0fa 100%);
  --grad-accent: linear-gradient(120deg, var(--sakura-400) 0%, var(--sakura-500) 55%, var(--plum-400) 100%);
  --grad-soft: linear-gradient(160deg, rgba(247, 200, 216, 0.35), rgba(207, 224, 236, 0.35));
  --grad-btn: linear-gradient(120deg, #f2a9c4 0%, #e58aa8 60%, #d16b8d 100%);
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", Georgia, "Times New Roman", serif;
  --maxw: 1200px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.35s;
}

html[data-theme="dark"] {
  --sakura-50: #2a1f26;
  --sakura-100: #34262f;
  --sakura-200: #46313d;
  --sakura-300: #5c3d4d;
  --sakura-400: #c98aa6;
  --sakura-500: #e094b2;
  --sakura-600: #f0a8c4;
  --sakura-700: #f7c8d8;
  --blue-100: #1d252c;
  --blue-200: #232d36;
  --blue-300: #2c3944;
  --blue-400: #4a6273;
  --blue-500: #7fa3bd;
  --sand-100: #262019;
  --sand-200: #33291f;
  --sand-300: #4a3b2c;
  --sand-400: #b3936f;
  --plum-300: #4a3a52;
  --plum-400: #8f76a0;
  --ink-900: #f4f0f6;
  --ink-800: #e6dfea;
  --ink-700: #cdc4d3;
  --ink-600: #b0a6b8;
  --ink-500: #948a9c;
  --ink-400: #776d80;
  --ink-300: #5b5263;
  --ink-200: #3c3543;
  --ink-100: #2a2530;
  --bg: #16121a;
  --bg-alt: #1c1721;
  --surface: #221c28;
  --surface-glass: rgba(38, 31, 45, 0.72);
  --surface-glass-strong: rgba(38, 31, 45, 0.88);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 12px 36px rgba(224, 148, 178, 0.22);
  --grad-hero: linear-gradient(135deg, #241a22 0%, #2a1f2b 32%, #1c2430 68%, #241f2e 100%);
  --grad-soft: linear-gradient(160deg, rgba(92, 61, 77, 0.4), rgba(44, 57, 68, 0.4));
  --grad-btn: linear-gradient(120deg, #d98ba6 0%, #c97a97 60%, #b0607f 100%);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background-color: var(--bg);
  background-image:
    radial-gradient(1200px 600px at 8% -8%, rgba(247, 200, 216, 0.22), transparent 60%),
    radial-gradient(1000px 520px at 96% 4%, rgba(207, 224, 236, 0.22), transparent 62%);
  background-attachment: fixed;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
  overflow-x: hidden;
}

html[data-theme="dark"] body {
  background-image:
    radial-gradient(1200px 600px at 8% -8%, rgba(92, 61, 77, 0.35), transparent 60%),
    radial-gradient(1000px 520px at 96% 4%, rgba(44, 57, 68, 0.35), transparent 62%);
}

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

a {
  color: var(--sakura-600);
  text-decoration: none;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

a:hover {
  color: var(--sakura-700);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  color: var(--ink-900);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.7rem, 1.2rem + 2.2vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem); }
h3 { font-size: clamp(1.1rem, 1rem + 0.6vw, 1.35rem); }
h4 { font-size: 1.05rem; color: var(--ink-800); }

p {
  margin: 0 0 1em;
}

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.35em;
}

li {
  margin-bottom: 0.45em;
}

strong {
  color: var(--ink-800);
  font-weight: 700;
}

blockquote {
  margin: 0 0 1.1em;
  padding: 0.9em 1.2em;
  border-left: 3px solid var(--sakura-400);
  background: var(--grad-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-700);
  font-style: normal;
}

blockquote cite {
  display: block;
  margin-top: 0.4em;
  font-size: 0.9rem;
  color: var(--ink-500);
  font-style: normal;
}

::selection {
  background: var(--sakura-300);
  color: var(--ink-900);
}

:focus-visible {
  outline: 3px solid var(--sakura-400);
  outline-offset: 2px;
  border-radius: 4px;
}

.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;
}

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  background: var(--surface-glass);
  border-bottom: 1px solid var(--border);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
  background: var(--surface-glass-strong);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--ink-900);
}

.brand-logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 10px rgba(229, 138, 168, 0.35));
  transition: transform var(--dur) var(--ease);
}

.brand:hover .brand-logo {
  transform: rotate(-8deg) scale(1.06);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1.08rem;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.brand-text small {
  font-size: 0.68rem;
  color: var(--ink-500);
  letter-spacing: 0.12em;
}

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

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

.main-nav li {
  margin: 0;
}

.main-nav a {
  display: inline-block;
  padding: 8px 11px;
  font-size: 0.9rem;
  color: var(--ink-600);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.main-nav a:hover {
  color: var(--sakura-700);
  background: var(--sakura-100);
  transform: translateY(-1px);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.site-search {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-search:focus-within {
  border-color: var(--sakura-400);
  box-shadow: 0 0 0 4px rgba(242, 169, 196, 0.2);
}

.site-search input {
  width: 150px;
  padding: 8px 12px 8px 16px;
  border: 0;
  background: transparent;
  color: var(--ink-800);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
}

.site-search input::placeholder {
  color: var(--ink-400);
}

.site-search button {
  border: 0;
  padding: 8px 14px;
  background: var(--grad-btn);
  color: #fff;
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: filter var(--dur) var(--ease);
}

.site-search button:hover {
  filter: brightness(1.06);
}

.theme-toggle,
.menu-toggle {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--ink-700);
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.theme-toggle:hover,
.menu-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--sakura-400);
  box-shadow: var(--shadow-sm);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

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

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

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

/* ============ Breadcrumb ============ */
.breadcrumb {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--ink-500);
}

.breadcrumb li {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "›";
  color: var(--ink-300);
}

.breadcrumb a {
  color: var(--ink-500);
}

.breadcrumb a:hover {
  color: var(--sakura-600);
}

/* ============ Hero ============ */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 20px 0;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--grad-hero);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}

.hero-slider::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.55), transparent 42%),
    radial-gradient(circle at 12% 88%, rgba(255, 255, 255, 0.4), transparent 46%);
  pointer-events: none;
  z-index: 1;
}

.slide {
  display: none;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 24px;
  padding: 34px;
  animation: slideFade 0.7s var(--ease) both;
}

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

@keyframes slideFade {
  from { opacity: 0; transform: translateY(14px) scale(0.995); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.slide-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--surface);
  border: 1px solid var(--border);
  transform: translateZ(0);
}

.slide-media svg {
  width: 100%;
  height: auto;
  display: block;
}

.slide-content h2 {
  margin-bottom: 0.5em;
  font-size: clamp(1.35rem, 1.1rem + 1.2vw, 1.95rem);
}

.slide-content p {
  color: var(--ink-600);
  max-width: 42ch;
  margin-bottom: 1.4em;
}

.slider-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 16px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 18px;
}

.slider-prev,
.slider-next {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  line-height: 1;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-strong);
  background: var(--surface-glass-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--ink-700);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.slider-prev:hover,
.slider-next:hover {
  transform: translateY(-2px);
  background: var(--sakura-400);
  color: #fff;
  border-color: transparent;
}

.slider-dots {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface-glass-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
}

.dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--ink-300);
  cursor: pointer;
  transition: width var(--dur) var(--ease), background var(--dur) var(--ease);
}

.dot.is-active {
  width: 26px;
  background: var(--grad-btn);
}

.hero-intro {
  padding: 34px 6px 8px;
  text-align: center;
}

.hero-intro h1 {
  max-width: 22ch;
  margin-left: auto;
  margin-right: auto;
  background: linear-gradient(120deg, var(--ink-900) 20%, var(--sakura-600) 60%, var(--plum-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  max-width: 74ch;
  margin: 0 auto 1.8em;
  color: var(--ink-600);
  font-size: 1.02rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.hero-stats li {
  margin: 0;
  padding: 18px 12px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.hero-stats li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--sakura-300);
}

.hero-stats strong {
  display: block;
  font-size: clamp(1.35rem, 1.1rem + 1vw, 1.9rem);
  font-weight: 800;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.hero-stats span {
  font-size: 0.82rem;
  color: var(--ink-500);
  letter-spacing: 0.04em;
}

/* ============ Anchor nav ============ */
.anchor-nav {
  max-width: var(--maxw);
  margin: 26px auto 0;
  padding: 0 20px;
}

.anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 12px;
  list-style: none;
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.anchor-nav li {
  margin: 0;
}

.anchor-nav a {
  display: inline-block;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--ink-600);
  background: transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.anchor-nav a:hover {
  background: var(--grad-btn);
  color: #fff;
  transform: translateY(-2px);
}

/* ============ Sections ============ */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 64px 20px;
}

.section-alt {
  max-width: none;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--dur) var(--ease);
}

.section-alt > * {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 14px;
}

.section-head h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 64px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--grad-btn);
  box-shadow: var(--shadow-glow);
}

.section-sub {
  margin: 0;
  color: var(--ink-500);
  font-size: 0.95rem;
}

/* ============ Grids ============ */
.grid-two,
.grid-three {
  display: grid;
  gap: 22px;
  margin-bottom: 22px;
}

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

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

.grid-two > *,
.grid-three > * {
  margin-bottom: 0;
}

/* ============ Cards ============ */
.card {
  position: relative;
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad-btn);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--sakura-300);
}

.card:hover::before {
  opacity: 1;
}

.card > *:last-child {
  margin-bottom: 0;
}

.card h3 {
  margin-bottom: 0.7em;
}

.card h4 {
  margin-top: 1.2em;
}

.card h4:first-of-type {
  margin-top: 0;
}

.product-card {
  text-align: left;
}

.product-card svg {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  filter: drop-shadow(0 8px 18px rgba(229, 138, 168, 0.28));
  transition: transform var(--dur) var(--ease);
}

.product-card:hover svg {
  transform: translateY(-4px) rotate(-4deg);
}

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 0.5em;
  font-size: 0.92rem;
  color: var(--ink-600);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--grad-btn);
  box-shadow: 0 0 0 3px rgba(242, 169, 196, 0.22);
}

/* Timeline */
.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: tl;
}

.timeline li {
  position: relative;
  padding: 0 0 18px 26px;
  margin: 0;
  border-left: 2px solid var(--sakura-200);
  color: var(--ink-600);
  font-size: 0.94rem;
}

.timeline li:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.45em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--sakura-400);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.timeline li:hover::before {
  background: var(--sakura-500);
  transform: scale(1.15);
}

.timeline strong {
  display: inline-block;
  margin-right: 6px;
  color: var(--sakura-700);
}

/* Author box */
.author-box {
  background: var(--grad-soft);
}

.meta-line {
  font-size: 0.82rem;
  color: var(--ink-500);
  letter-spacing: 0.02em;
}

/* Process list */
.process-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.process-list li {
  position: relative;
  padding: 10px 0 10px 44px;
  margin: 0;
  border-bottom: 1px dashed var(--border-strong);
  color: var(--ink-600);
  font-size: 0.94rem;
}

.process-list li:last-child {
  border-bottom: 0;
}

.process-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 12px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: var(--grad-btn);
  box-shadow: var(--shadow-sm);
}

/* Case cards */
.case-card svg {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid var(--border);
  transition: transform var(--dur) var(--ease);
}

.case-card:hover svg {
  transform: scale(1.015);
}

/* Article list */
.article-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.article-card {
  display: flex;
  flex-direction: column;
}

.article-card h3 {
  font-size: 1.08rem;
  line-height: 1.5;
}

.article-card h3 a {
  color: var(--ink-900);
}

.article-card h3 a:hover {
  color: var(--sakura-600);
}

.article-card p {
  font-size: 0.92rem;
  color: var(--ink-600);
}

.read-more {
  align-self: flex-start;
  margin-top: auto;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  color: var(--sakura-700);
  background: var(--sakura-100);
  border: 1px solid var(--sakura-200);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.read-more:hover {
  background: var(--grad-btn);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

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

.faq-item {
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.faq-item[open] {
  border-color: var(--sakura-300);
  box-shadow: var(--shadow-md);
}

.faq-item summary {
  position: relative;
  padding: 18px 52px 18px 22px;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink-800);
  list-style: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--sakura-700);
  background: var(--sakura-100);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.faq-item summary:hover {
  color: var(--sakura-700);
  background: var(--sakura-50);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--ink-600);
  font-size: 0.94rem;
  animation: faqIn 0.35s var(--ease) both;
}

@keyframes faqIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* HowTo */
.howto-card h3 {
  margin-top: 1.6em;
  padding-left: 14px;
  border-left: 4px solid var(--sakura-400);
}

.howto-card h3:first-child {
  margin-top: 0;
}

.howto-card ul {
  padding-left: 1.2em;
}

.howto-card ul li {
  font-size: 0.94rem;
  color: var(--ink-600);
}

/* Contact */
.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-strong);
  font-size: 0.94rem;
  color: var(--ink-600);
}

.contact-list li:last-child {
  border-bottom: 0;
}

.contact-list strong {
  color: var(--ink-800);
  margin-right: 4px;
}

.contact-form {
  display: grid;
  gap: 8px;
}

.contact-form label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-700);
  margin-top: 6px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.94rem;
  color: var(--ink-800);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--ink-400);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--sakura-400);
  box-shadow: 0 0 0 4px rgba(242, 169, 196, 0.2);
}

.btn-primary {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 30px;
  border: 0;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--grad-btn);
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), filter var(--dur) var(--ease);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(229, 138, 168, 0.4);
  filter: brightness(1.05);
  color: #fff;
}

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

/* Sitemap */
.sitemap-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 18px;
}

.sitemap-list li {
  margin: 0;
}

.sitemap-list a {
  display: inline-block;
  padding: 6px 0;
  font-size: 0.92rem;
  color: var(--ink-600);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.sitemap-list a:hover {
  color: var(--sakura-600);
  transform: translateX(4px);
}

/* ============ Footer ============ */
.site-footer {
  margin-top: 40px;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--surface) 100%);
  border-top: 1px solid var(--border);
  color: var(--ink-600);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 52px 20px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 28px;
}

.footer-col h3 {
  font-size: 1rem;
  margin-bottom: 0.9em;
  color: var(--ink-900);
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--grad-btn);
}

.footer-col p {
  font-size: 0.88rem;
  color: var(--ink-500);
}

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

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

.footer-col a {
  font-size: 0.88rem;
  color: var(--ink-600);
}

.footer-col a:hover {
  color: var(--sakura-600);
}

.footer-legal {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.footer-legal article {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.footer-legal article:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.footer-legal h3 {
  font-size: 0.95rem;
  margin-bottom: 0.6em;
}

.footer-legal p {
  font-size: 0.84rem;
  color: var(--ink-500);
  margin: 0;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
}

.footer-bottom p {
  margin: 0.2em 0;
  font-size: 0.8rem;
  color: var(--ink-400);
}

/* ============ Back to top ============ */
.back-to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: #fff;
  background: var(--grad-btn);
  border: 0;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(0.9);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease), filter var(--dur) var(--ease);
}

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

.back-to-top:hover {
  filter: brightness(1.08);
  transform: translateY(-4px) scale(1.05);
}

/* ============ Reveal animation ============ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}

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

@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;
  }
}

/* ============ Responsive ============ */
@media (max-width: 1080px) {
  .main-nav a {
    padding: 8px 9px;
    font-size: 0.86rem;
  }
  .site-search input {
    width: 118px;
  }
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  :root {
    --header-h: 64px;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 0 16px;
    background: var(--surface-glass-strong);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.42s var(--ease), opacity var(--dur) var(--ease), visibility var(--dur) var(--ease), padding var(--dur) var(--ease);
  }
  .main-nav.is-open {
    max-height: 70vh;
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
    padding: 12px 16px 18px;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .main-nav a {
    display: block;
    padding: 11px 14px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
  }
  .header-inner {
    justify-content: space-between;
  }
  .site-search {
    display: none;
  }
  .slide {
    grid-template-columns: 1fr;
    padding: 26px 22px 62px;
    text-align: center;
  }
  .slide-content p {
    margin-left: auto;
    margin-right: auto;
  }
  .grid-three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .article-list {
    grid-template-columns: 1fr;
  }
  .footer-legal {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }
  .section {
    padding: 44px 16px;
  }
  .hero {
    padding: 14px 14px 0;
  }
  .hero-slider {
    border-radius: var(--radius-lg);
  }
  .slide {
    padding: 20px 16px 60px;
    gap: 16px;
  }
  .slider-controls {
    bottom: 12px;
    gap: 10px;
  }
  .slider-prev,
  .slider-next {
    width: 34px;
    height: 34px;
  }
  .hero-intro {
    padding: 26px 4px 4px;
  }
  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .anchor-nav {
    padding: 0 14px;
  }
  .anchor-nav ul {
    padding: 10px;
  }
  .anchor-nav a {
    padding: 6px 11px;
    font-size: 0.8rem;
  }
  .grid-two,
  .grid-three {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .card {
    padding: 20px;
    border-radius: var(--radius-md);
  }
  .section-head {
    margin-bottom: 28px;
  }
  .sitemap-list {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 40px 16px 24px;
  }
  .footer-legal {
    padding: 0 16px 26px;
  }
  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 42px;
    height: 42px;
  }
  .faq-item summary {
    padding: 15px 48px 15px 16px;
    font-size: 0.95rem;
  }
  .faq-answer {
    padding: 0 16px 16px;
  }
  .breadcrumb {
    padding: 10px 16px 0;
  }
}

@media (max-width: 380px) {
  .brand-text small {
    display: none;
  }
  .hero-stats strong {
    font-size: 1.25rem;
  }
}
</style>