/* ========== Dadi Project Express - Homepage Styles ========== */
/* All class names use unique prefixes to avoid conflicts with dadikid.com */

:root {
  --dadi-green: #2E7D32;
  --dadi-green-light: #43A047;
  --dadi-green-lighter: #66BB6A;
  --dadi-green-bg: #E8F5E9;
  --dadi-green-bg-light: #F1F8F2;
  --dadi-orange: #FF6F00;
  --text-primary: #1B1B1B;
  --text-secondary: #555555;
  --text-tertiary: #888888;
  --bg-white: #FFFFFF;
  --bg-gray: #F7F8FA;
  --border-color: #E0E0E0;
  --border-light: #EEEEEE;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --max-width: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Source Han Sans CN", "Source Han Sans SC", "Noto Sans CJK SC", "Noto Sans SC", "HarmonyOS Sans SC", "HarmonyOS Sans", sans-serif;
  color: var(--text-primary);
  background: var(--bg-gray);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color 0.2s; }
a:hover { color: var(--dadi-green); }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; box-sizing: border-box; width: 100%; }

/* ========== Header ========== */
.header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo-area { display: flex; align-items: center; gap: 12px; }
.logo-area img { height: 40px; display: block; }
.nav-menu { display: flex; gap: 4px; align-items: center; }
.nav-menu a {
  padding: 8px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all 0.2s;
}
.nav-menu a:hover { color: var(--dadi-green); background: var(--dadi-green-bg); }
.nav-menu a.active { color: var(--dadi-green); background: var(--dadi-green-bg); font-weight: 600; }

/* Dropdown Nav - 支持三级菜单 */
.nav-item { position: relative; }
.nav-item > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all 0.2s;
}
.nav-item > a:hover { color: var(--dadi-green); background: var(--dadi-green-bg); }
.nav-item > a.active { color: var(--dadi-green); background: var(--dadi-green-bg); font-weight: 600; }
.nav-item > a .arrow {
  width: 16px; height: 16px;
  transition: transform 0.25s;
  opacity: 0.6;
}
.nav-item:hover > a .arrow { transform: rotate(180deg); opacity: 1; }
/* hover 桥接：覆盖一级与二级菜单之间的空隙，避免鼠标移入时收起 */
.nav-item::after {
  content: ''; position: absolute; left: 0; top: 100%; width: 100%; height: 12px;
  background: transparent; z-index: 100; display: none;
}
.nav-item:hover::after { display: block; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 210px;
  max-width: 320px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.6);
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  z-index: 99;
}
.dropdown-menu.scrollable { max-height: 400px; overflow-y: auto; }
.nav-item:hover > .dropdown-menu,
.nav-item.open > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item { position: relative; }
.dropdown-item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  white-space: normal;
  line-height: 1.45;
  transition: all 0.15s;
}
.dropdown-item > a:hover {
  color: var(--dadi-green);
  background: var(--dadi-green-bg-light);
}
.dropdown-item > a.active {
  color: var(--dadi-green);
  background: var(--dadi-green-bg);
  font-weight: 600;
}
.dropdown-item > a .arrow-right {
  width: 14px; height: 14px;
  opacity: 0.5;
  margin-left: 8px;
  flex-shrink: 0;
}
.dropdown-item.has-children:hover > a .arrow-right { opacity: 1; color: var(--dadi-green); }

/* 三级菜单：嵌套在 dropdown-item 内，向右级联展开 */
.dropdown-item > .dropdown-menu {
  position: absolute;
  top: -10px;
  left: 100%;
  margin-left: 6px;
  transform: translateX(8px);
  min-width: 200px;
  max-width: 300px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
}
/* hover 桥接：覆盖二级与三级菜单之间的空隙，避免鼠标移入时收起 */
.dropdown-item.has-children::after {
  content: '';
  position: absolute;
  right: -14px;
  top: 0;
  width: 14px;
  height: 100%;
  background: transparent;
  z-index: 100;
  display: none;
}
.dropdown-item.has-children:hover::after { display: block; }
.dropdown-item.has-children:hover > .dropdown-menu,
.dropdown-item.open > .dropdown-menu,
.dropdown-item > .dropdown-menu:hover {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(0);
}

/* 三级菜单靠左显示（靠近右边界时反向展开） */
.dropdown-item.align-left > .dropdown-menu {
  left: auto;
  right: 100%;
  margin-left: 0;
  margin-right: 6px;
  transform: translateX(-8px);
}
.dropdown-item.align-left:hover > .dropdown-menu,
.dropdown-item.align-left.open > .dropdown-menu {
  transform: translateX(0);
}
.dropdown-item.align-left::after {
  right: auto;
  left: -14px;
}
.dropdown-item.align-left > a .arrow-right {
  transform: rotate(180deg);
}

.mobile-menu-btn { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--dadi-green); padding: 8px; }

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: calc(100svh - 252px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #1b5e20;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../../Images/xmkg/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 20s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to { transform: scale(1.05); }
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(27,94,32,0.78) 0%, rgba(46,125,50,0.5) 50%, transparent 67%);
}
.hero-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.3) 0%, transparent 50%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 0 40px;
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  opacity: 0;
  animation: heroFadeUp 0.8s ease-out 0.2s forwards;
}
.hero-tag::before {
  content: '';
  width: 6px; height: 6px;
  background: #FFB74D;
  border-radius: 50%;
}
.hero h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 12px;
  line-height: 1.25;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0,0,0,0.25);
  opacity: 0;
  animation: heroFadeUp 0.8s ease-out 0.4s forwards;
}
.hero-subtitle {
  font-size: 24px;
  font-weight: 400;
  color: rgba(255,255,255,0.95);
  margin-bottom: 18px;
  text-shadow: 0 1px 10px rgba(0,0,0,0.2);
  opacity: 0;
  animation: heroFadeUp 0.8s ease-out 0.6s forwards;
}
.hero-desc {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255,255,255,0.85);
  margin-bottom: 36px;
  text-shadow: 0 1px 6px rgba(0,0,0,0.2);
  opacity: 0;
  animation: heroFadeUp 0.8s ease-out 0.8s forwards;
}
.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: #fff;
  color: var(--dadi-green);
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
  opacity: 0;
  animation: heroFadeUp 0.8s ease-out 1s forwards;
}
.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.28);
  color: var(--dadi-green);
}
.hero-btn .arrow { transition: transform 0.3s; }
.hero-btn:hover .arrow { transform: translateX(4px); }
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  text-align: center;
  opacity: 0;
  animation: heroFadeUp 1s ease-out 1.4s forwards;
}
.hero-scroll-hint svg {
  display: block;
  margin: 6px auto 0;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ========== Scroll Reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Features Strip ========== */
.features-strip {
  background: var(--dadi-green);
  padding: 40px 0;
}
.features-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-item {
  text-align: center;
  color: #fff;
  transition: transform 0.3s;
}
.feature-item:hover { transform: translateY(-4px); }
.feature-item .num {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: 1px;
  position:static;
}
.feature-item .num span { font-size: 16px; font-weight: 400; margin-left: 2px; }
.feature-item .divider {
  width: 32px;
  height: 2px;
  background: rgba(255,255,255,0.3);
  margin: 10px auto;
  transition: width 0.3s;
}
.feature-item:hover .divider { width: 48px; background: rgba(255,255,255,0.6); }
.feature-item .label {
  font-size: 14px;
  opacity: 0.88;
}

/* ========== Section Common ========== */
.section { padding: 72px 0; }
.section-header {
  text-align: center;
  margin-bottom: 44px;
}
.section-header h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.section-header .subtitle {
  font-size: 15px;
  color: var(--text-tertiary);
}
.section-header .line {
  width: 48px;
  height: 3px;
  background: var(--dadi-green);
  border-radius: 2px;
  margin: 14px auto 0;
  transition: width 0.4s;
}
.section-header.visible .line { width: 72px; }

/* ========== Monthly Focus ========== */
.monthly-section { background: var(--bg-white); }
.month-tabs {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.month-tab {
  padding: 8px 18px;
  background: var(--bg-gray);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s;
  font-weight: 500;
  white-space: nowrap;
}
.month-tab:hover {
  border-color: var(--dadi-green-light);
  color: var(--dadi-green);
  transform: translateY(-2px);
}
.month-tab.active {
  background: var(--dadi-green);
  color: #fff;
  border-color: var(--dadi-green);
  box-shadow: 0 4px 16px rgba(46,125,50,0.3);
}
.month-content {
  background: var(--dadi-green-bg-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--dadi-green-bg);
  transition: opacity 0.3s;
}
.month-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--dadi-green);
  margin-bottom: 24px;
}
.month-title .badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: var(--dadi-orange);
  color: #fff;
  font-size: 12px;
  border-radius: 10px;
  font-weight: 500;
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.category-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-light);
  transition: all 0.3s;
}
.category-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--dadi-green-lighter);
  transform: translateY(-3px);
}
.category-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--dadi-green-bg);
}
.category-card-header .icon {
  width: 28px; height: 28px;
  background: var(--dadi-green-bg);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--dadi-green);
  flex-shrink: 0;
}
.category-card-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  background: var(--bg-gray);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.project-tag:hover {
  background: var(--dadi-green);
  color: #fff;
  border-color: var(--dadi-green);
  transform: translateY(-1px);
}
.project-tag::before {
  content: '';
  width: 4px; height: 4px;
  background: var(--dadi-green-lighter);
  border-radius: 50%;
  margin-right: 6px;
  transition: background 0.2s;
}
.project-tag:hover::before { background: #fff; }

/* ========== Roles Section ========== */
.roles-section { background: var(--bg-gray); }
.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.role-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: all 0.35s;
  position: relative;
  overflow: hidden;
}
.role-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--dadi-green), var(--dadi-green-lighter));
  transform: scaleX(0);
  transition: transform 0.35s;
}
.role-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}
.role-card:hover::before { transform: scaleX(1); }
.role-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  background: var(--dadi-green-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.35s;
}
.role-icon svg { fill: var(--dadi-green); transition: fill 0.35s; }
.role-card:hover .role-icon {
  background: var(--dadi-green);
  transform: scale(1.08);
}
.role-card:hover .role-icon svg { fill: #fff; }
.role-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.role-card p {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}
.role-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--dadi-green);
  font-weight: 500;
  transition: gap 0.2s;
}
.role-card:hover .role-link { gap: 8px; }

/* ========== Footer ========== */
.footer {
  background: #1A1A1A;
  color: #aaa;
  padding: 48px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid #333;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 2;
  color: #999;
}
.footer-contact h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 14px;
}
.footer-contact p {
  font-size: 14px;
  line-height: 2.2;
  color: #999;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact .contact-icon {
  width: 20px;
  text-align: center;
  color: var(--dadi-green-lighter);
}
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #666;
}
.footer-bottom a {
  color: var(--dadi-green-lighter);
  margin: 0 6px;
}
.footer-bottom a:hover { color: #fff; text-decoration: underline; }

/* ========== Responsive - Tablet ========== */
@media (max-width: 900px) {
  .nav-menu { display: none; }
  .mobile-menu-btn { display: block; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    padding: 12px;
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--border-light);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }
  .nav-menu.open .nav-item { width: 100%; }
  .nav-menu.open .nav-item > a { width: 100%; padding: 12px 16px; justify-content: space-between; }
  .nav-menu.open .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--dadi-green-bg);
    border-radius: 0;
    max-width: 100%;
    max-height: none;
    margin-left: 16px;
    padding: 4px 0;
  }
  .nav-menu.open .nav-item.open > .dropdown-menu { display: block; }
  .nav-menu.open .dropdown-item.open > .dropdown-menu { display: block; }
  .nav-menu.open .dropdown-item > a { width: 100%; padding: 10px 16px; justify-content: space-between; }
  .nav-menu.open .dropdown-menu .dropdown-menu {
    border-left-color: var(--dadi-green-bg-light);
    margin-left: 12px;
  }
  .nav-menu.open a { width: 100%; padding: 12px 16px; }
  .container { padding: 0 10px; }
  .header-inner { padding: 0 10px; }
  .hero { padding: 80px 0 60px; }
  .hero-content { max-width: 100%; padding: 0 10px; }
  .hero h1 { font-size: 32px; }
  .hero-subtitle { font-size: 18px; }
  .section-header h2 { font-size: 24px; }
  .section { padding: 36px 0; }
  .roles-grid { grid-template-columns: 1fr; }
  .features-strip { padding: 24px 0; }
  .features-inner { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0 10px; }
  .footer-top { grid-template-columns: 1fr; padding: 0 10px; }
  .footer { padding: 36px 0 0; }
  .footer-bottom { padding: 14px 10px; }
  .section-header { padding: 0 10px; }
  .category-grid { grid-template-columns: 1fr; }
  .month-content { padding: 20px 10px; }
  .month-tab { padding: 6px 12px; font-size: 13px; }
  .month-tabs { padding: 0 10px; }
  .hero-scroll-hint { display: none; }
}

/* ========== Responsive - Mobile ========== */
@media (max-width: 600px) {
  .container { padding: 0 10px; }
  .header-inner { height: 60px; padding: 0 10px; }
  .logo-area img { height: 32px; }
  .hero { min-height: calc(100svh - 180px); padding: 70px 0 50px; }
  .hero h1 { font-size: 26px; letter-spacing: 1px; }
  .hero-subtitle { font-size: 16px; }
  .hero-desc { font-size: 13px; line-height: 1.7; margin-bottom: 24px; }
  .hero-btn { padding: 12px 28px; font-size: 14px; }
  .hero-tag { font-size: 12px; padding: 5px 12px; margin-bottom: 16px; }
  .hero-content { padding: 0 10px; }
  .features-strip { padding: 20px 0; }
  .features-inner { grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 0 10px; }
  .feature-item .num { font-size: 28px; }
  .feature-item .label { font-size: 12px; }
  .section { padding: 28px 0; }
  .section-header { margin-bottom: 20px; padding: 0 10px; }
  .section-header h2 { font-size: 20px; }
  .section-header .subtitle { font-size: 13px; }
  .month-tabs { gap: 4px; margin-bottom: 16px; padding: 0 10px; }
  .month-tab { padding: 5px 10px; font-size: 12px; }
  .month-content { padding: 16px 10px; border-radius: 12px; }
  .month-title { font-size: 16px; margin-bottom: 16px; }
  .category-card { padding: 14px; }
  .category-card-header h3 { font-size: 14px; }
  .project-tag { font-size: 12px; padding: 4px 10px; }
  .role-card { padding: 20px 16px; }
  .role-icon { width: 44px; height: 44px; font-size: 20px; }
  .role-card h3 { font-size: 15px; }
  .footer { padding: 28px 0 0; }
  .footer-top { gap: 20px; padding-bottom: 20px; padding: 0 10px 20px; }
  .footer-brand h3 { font-size: 17px; }
  .footer-contact h3 { font-size: 16px; }
  .footer-contact p { font-size: 13px; }
  .footer-bottom { padding: 12px 10px; font-size: 12px; }
}

/* ========== Responsive - Small Mobile ========== */
@media (max-width: 380px) {
  .features-inner { grid-template-columns: 1fr; gap: 16px; }
  .hero h1 { font-size: 22px; }
  .hero-subtitle { font-size: 14px; }
  .month-tab { padding: 4px 8px; font-size: 11px; }
}