/* =========================================================
   作业有方 官网 · style.css
   配色: #4a7c59 / #faf9f7 / #2d2d2d
   ========================================================= */

/* ---------- 1. CSS 变量 ---------- */
:root {
  --c-primary:        #4a7c59;
  --c-primary-dark:   #3a6346;
  --c-primary-light:  #6a9b78;
  --c-primary-soft:   #e6efe8;
  --c-primary-faint:  #f1f6f2;

  --c-bg:             #faf9f7;
  --c-bg-2:           #f3efe7;
  --c-card:           #ffffff;
  --c-line:           #e8e2d4;
  --c-line-soft:      #efeadd;

  --c-text:           #2d2d2d;
  --c-text-2:         #5a5a5a;
  --c-text-3:         #8a8a8a;
  --c-text-4:         #b5b5b5;

  --shadow-sm:        0 1px 2px rgba(34, 47, 38, .04), 0 1px 4px rgba(34, 47, 38, .04);
  --shadow-md:        0 4px 12px rgba(34, 47, 38, .06), 0 8px 24px rgba(34, 47, 38, .04);
  --shadow-lg:        0 8px 24px rgba(34, 47, 38, .08), 0 24px 48px rgba(34, 47, 38, .06);

  --radius-sm:        8px;
  --radius:           14px;
  --radius-lg:        20px;
  --radius-xl:        28px;

  --font-serif:       "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Source Han Serif SC", serif;
  --font-sans:        "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Heiti SC", system-ui, sans-serif;
  --font-kai:         "Ma Shan Zheng", "Kaiti SC", "STKaiti", "KaiTi", serif;

  --container:        1180px;
  --gutter:           24px;

  --ease:             cubic-bezier(.2, .8, .2, 1);
}

/* ---------- 2. 重置 + 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
button { font: inherit; background: none; border: none; cursor: pointer; }
ul { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 600; line-height: 1.35; }

/* ---------- 3. 容器 ---------- */
.nav__inner,
.hero__inner,
.section__head,
.idea__grid,
.habit__inner,
.cta__inner,
.footer__inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 4. 顶部导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 249, 247, .78);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.nav.is-scrolled {
  background: rgba(250, 249, 247, .94);
  box-shadow: 0 1px 0 var(--c-line-soft), 0 6px 18px rgba(34,47,38,.04);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-primary);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
}
.logo-mark img {
  width: 100%; height: 100%;
  object-fit: contain;
  border-radius: 8px;
}
.logo-text {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}
.nav__menu {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 15px;
  color: var(--c-text-2);
}
.nav__menu a { position: relative; }
.nav__menu a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -6px;
  width: 0; height: 2px;
  background: var(--c-primary);
  transition: width .3s var(--ease), left .3s var(--ease);
}
.nav__menu a:hover { color: var(--c-primary); }
.nav__menu a:hover::after { width: 100%; left: 0; }
.nav__cta {
  padding: 8px 18px;
  background: var(--c-primary);
  color: #fff !important;
  border-radius: 999px;
  font-weight: 500;
}
.nav__cta::after { display: none; }
.nav__cta:hover { background: var(--c-primary-dark); }

.nav__burger {
  display: none;
  width: 36px; height: 36px;
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 6px; right: 6px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav__burger span:nth-child(1) { top: 10px; }
.nav__burger span:nth-child(2) { top: 17px; }
.nav__burger span:nth-child(3) { top: 24px; }
.nav__burger.is-open span:nth-child(1) { top: 17px; transform: rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { top: 17px; transform: rotate(-45deg); }

/* ---------- 5. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 1px;
  transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(74, 124, 89, .25);
}
.btn--primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(74, 124, 89, .35);
}
.btn--ghost {
  color: var(--c-primary);
  border: 1px solid var(--c-primary);
  background: transparent;
}
.btn--ghost:hover {
  background: var(--c-primary-soft);
  transform: translateY(-1px);
}
.btn--lg { height: 52px; padding: 0 32px; font-size: 16px; }

.section__head {
  text-align: center;
  margin-bottom: 64px;
}
.section__num {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--c-primary);
  margin-bottom: 12px;
  padding: 4px 12px;
  background: var(--c-primary-soft);
  border-radius: 999px;
}
.section__title {
  font-family: var(--font-serif);
  font-size: 38px;
  letter-spacing: 2px;
  color: var(--c-text);
  margin: 0 0 12px;
}
.section__sub {
  font-size: 16px;
  color: var(--c-text-2);
  letter-spacing: 1px;
}

/* ---------- 6. 手机外壳(真机展示) ---------- */
.phone {
  position: relative;
  width: 400px;
  padding: 14px;
  background: #1f2422;
  border-radius: 36px;
  box-shadow:
    0 1px 0 rgba(255,255,255,.08) inset,
    0 -1px 0 rgba(0,0,0,.4) inset,
    var(--shadow-lg);
}
.phone::before {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 34px;
  border: 1px solid rgba(255,255,255,.06);
  pointer-events: none;
}
.phone__notch {
  position: absolute;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  width: 60px; height: 16px;
  background: #1f2422;
  border-radius: 0 0 12px 12px;
  z-index: 2;
}
.phone__screen {
  width: 100%;
  aspect-ratio: 9 / 19.5;
  border-radius: 24px;
  overflow: hidden;
  background: var(--c-bg);
}
.phone__screen img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
}
.phone--big { width: 340px; }
/* 核心功能模块:截图重点展示,放大手机壳让文字更清晰 */
.feature__media .phone { width: 400px; }

/* ---------- 7. Hero ---------- */
.hero {
  position: relative;
  padding: 130px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -180px; right: -120px;
  width: 460px; height: 460px;
  background: radial-gradient(circle, var(--c-primary-soft) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -160px; left: -100px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, #f1ecdd 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  font-size: 13px;
  letter-spacing: 1.5px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--c-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(74,124,89,.18);
}
.hero__title {
  font-family: var(--font-serif);
  font-size: 44px;
  line-height: 1.3;
  letter-spacing: 2px;
  margin: 0 0 24px;
  color: var(--c-text);
}
.hl {
  position: relative;
  color: var(--c-primary);
  white-space: nowrap;
}
.hl::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 12px;
  background: rgba(74, 124, 89, .14);
  z-index: -1;
  border-radius: 2px;
}
.hero__sub {
  font-size: 17px;
  color: var(--c-text-2);
  line-height: 1.95;
  margin: 0 0 32px;
  max-width: 540px;
}
.hero__meta {
  display: flex;
  gap: 36px;
  border-top: 1px solid var(--c-line-soft);
  padding-top: 24px;
}
.hero__meta li {
  font-size: 14px;
  color: var(--c-text-2);
}
.hero__meta strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  color: var(--c-primary);
  letter-spacing: 1px;
  line-height: 1.2;
  margin-bottom: 2px;
}

.hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.hero__slogan {
  position: relative;
  max-width: 300px;
  margin: 36px 0 0;
  transform: rotate(-2deg);
}
.hero__slogan img {
  width: 100%;
  filter: drop-shadow(0 12px 24px rgba(34,47,38,.12));
}
.hero__phone {
  display: flex;
  align-items: center;
  gap: 20px;
}
.hero__qr {
  text-align: center;
  flex-shrink: 0;
}
.hero__qr img {
  width: 96px;
  height: 96px;
  border-radius: var(--radius);
  border: 1px solid var(--c-line-soft);
  padding: 8px;
  background: #fff;
  box-shadow: var(--shadow-md);
}
.hero__qr p {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--c-text-2);
  letter-spacing: 1px;
  line-height: 1.6;
}

/* ---------- 8. 设计理念 ---------- */
.idea {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-primary-faint) 100%);
}
.idea__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.idea-card {
  position: relative;
  padding: 32px 28px 28px;
  background: var(--c-card);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}
.idea-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-primary-light);
  box-shadow: var(--shadow-md);
}
.idea-card__no {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 600;
  color: var(--c-primary);
  letter-spacing: 2px;
  line-height: 1;
  margin-bottom: 16px;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.idea-card h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--c-text);
  letter-spacing: 1px;
}
.idea-card p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.85;
  margin: 0;
}

/* ---------- 9. 功能模块 ---------- */
.features {
  padding: 100px 0;
  background: var(--c-bg);
}
.feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  margin-bottom: 100px;
}
.feature:last-child { margin-bottom: 0; }
/* 核心功能:真机截图居中在上,文字块居中在下,整体居中对齐 */
.feature__media {
  display: flex;
  justify-content: center;
  position: relative;
}
.feature__media::before {
  content: "";
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse, var(--c-primary-soft) 0%, transparent 70%);
  z-index: 0;
}
.feature__media .phone {
  position: relative;
  z-index: 1;
}
.feature__body {
  position: relative;
  max-width: 680px;
  text-align: center;
}
.feature__tag {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--c-primary);
  background: var(--c-primary-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.feature__body h3 {
  font-family: var(--font-serif);
  font-size: 36px;
  letter-spacing: 2px;
  margin-bottom: 14px;
  color: var(--c-text);
}
.feature__lede {
  font-size: 17px;
  color: var(--c-text-2);
  line-height: 1.85;
  margin: 0 auto 28px;
  max-width: 520px;
}
.feature__list {
  border-top: 1px solid var(--c-line-soft);
  padding-top: 20px;
  text-align: left;
  display: inline-block;
}
.feature__list li {
  position: relative;
  padding: 10px 0 10px 28px;
  font-size: 15px;
  color: var(--c-text-2);
  line-height: 1.7;
  border-bottom: 1px dashed var(--c-line-soft);
}
.feature__list li:last-child { border-bottom: none; }
.feature__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 19px;
  width: 14px; height: 1.5px;
  background: var(--c-primary);
  border-radius: 1px;
}

/* 教育箴言模块:左卡片替代手机 */
.feature__media--alt {
  align-items: center;
}
.quote-card {
  position: relative;
  width: 320px;
  padding: 56px 40px 44px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  z-index: 1;
}
.quote-card::before {
  content: "";
  position: absolute;
  top: 18px; left: 18px; right: 18px; bottom: 18px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
}
.quote-mark {
  position: absolute;
  top: -22px; left: 50%;
  transform: translateX(-50%);
  width: 56px; height: 56px;
  background: var(--c-bg);
  color: var(--c-primary);
  font-family: var(--font-serif);
  font-size: 60px;
  line-height: 56px;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
}
.quote-text {
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.7;
  letter-spacing: 2px;
  margin: 0 0 18px;
  color: #fff;
}
.quote-from {
  font-size: 13px;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,.7);
  margin: 0;
}

/* ---------- 10. 习惯培养 ---------- */
.habit {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-2) 100%);
}
.habit__inner {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 80px;
  align-items: center;
}
.habit__text .section__title { text-align: left; }
.habit__lede {
  font-size: 17px;
  color: var(--c-text-2);
  margin: 16px 0 40px;
  line-height: 1.85;
}
.habit__stages {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.stage {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--c-card);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.stage:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}
.stage__no {
  flex-shrink: 0;
  width: 48px; height: 48px;
  background: var(--c-primary);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.stage h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--c-text);
  margin: 0 0 6px;
  letter-spacing: 1px;
}
.stage p {
  font-size: 14px;
  color: var(--c-text-2);
  line-height: 1.75;
  margin: 0;
}
.habit__media {
  display: flex;
  justify-content: center;
  position: relative;
}
.habit__media::before {
  content: "";
  position: absolute;
  inset: -20px;
  background: radial-gradient(ellipse, #e9e0c8 0%, transparent 70%);
  z-index: 0;
}

/* ---------- 11. CTA ---------- */
.cta {
  padding: 100px 0;
  background: var(--c-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(255,255,255,.08) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(255,255,255,.05) 0%, transparent 40%);
  pointer-events: none;
}
.cta__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}
.cta .section__num {
  background: rgba(255,255,255,.16);
  color: #fff;
}
.cta .section__title {
  color: #fff;
  font-size: 44px;
  margin: 12px 0 20px;
  text-align: left;
  letter-spacing: 4px;
}
.cta__sub {
  font-size: 17px;
  color: rgba(255,255,255,.85);
  line-height: 1.95;
  margin: 0 0 32px;
}
.cta .btn--primary {
  background: #fff;
  color: var(--c-primary);
  box-shadow: 0 4px 18px rgba(0,0,0,.18);
}
.cta .btn--primary:hover {
  background: var(--c-bg);
  color: var(--c-primary-dark);
  transform: translateY(-1px);
}
.qr-card {
  background: #fff;
  padding: 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,.18);
}
.qr-card img {
  width: 180px;
  height: 180px;
  border-radius: var(--radius);
}
.qr-card p {
  margin: 16px 0 0;
  color: var(--c-text);
  font-size: 14px;
  letter-spacing: 1.5px;
  line-height: 1.7;
}

/* ---------- 12. Footer ---------- */
.footer {
  background: #1f2823;
  color: rgba(255,255,255,.7);
  padding: 36px 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 1.5px;
}
.footer__meta {
  text-align: right;
  font-size: 13px;
  letter-spacing: 1px;
  line-height: 1.8;
}
.footer__copy {
  color: rgba(255,255,255,.45);
  margin: 4px 0 0;
}

/* ---------- 13. 桌面悬浮二维码 ---------- */
.float-qr {
  position: fixed;
  right: 28px;
  bottom: 32px;
  z-index: 90;
  background: #fff;
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius);
  padding: 12px;
  text-align: center;
  box-shadow: var(--shadow-md);
  width: 132px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.float-qr:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.float-qr img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 8px;
  background: #fff;
}
.float-qr span {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: var(--c-text-2);
  letter-spacing: 1px;
  line-height: 1.5;
}

/* ---------- 15. 滚动渐入 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1024px) {
  .hero { padding-top: 110px; }
  .hero__inner { grid-template-columns: 1fr; gap: 60px; }
  .hero__title { font-size: 38px; }
  .idea__grid { grid-template-columns: repeat(2, 1fr); }
  .feature__tag { display: inline-block; }
  .feature__body h3 { font-size: 30px; }
  .habit__inner { grid-template-columns: 1fr; gap: 60px; }
  .habit__text { text-align: center; }
  .habit__text .section__title { text-align: center; }
  .habit__lede { text-align: center; }
  .stage { text-align: left; }
  .cta__inner { grid-template-columns: 1fr; text-align: center; }
  .cta .section__title { text-align: center; }
  /* 单列时小程序码卡片居中 */
  .cta__qr { display: flex; justify-content: center; }
  .float-qr { display: none; }
}

@media (max-width: 720px) {
  :root { --gutter: 18px; }
  .nav__inner { height: 56px; }
  .nav__menu {
    position: fixed;
    top: 56px; left: 0; right: 0;
    background: var(--c-bg);
    border-top: 1px solid var(--c-line-soft);
    border-bottom: 1px solid var(--c-line-soft);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 0;
    gap: 0;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s var(--ease), opacity .3s var(--ease);
  }
  .nav__menu.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav__menu a {
    padding: 14px var(--gutter);
    font-size: 16px;
    border-bottom: 1px solid var(--c-line-soft);
  }
  .nav__menu a:last-child { border-bottom: none; }
  .nav__menu a::after { display: none; }
  .nav__cta { margin: 8px var(--gutter); }
  .nav__burger { display: block; }
  .hero { padding: 90px 0 60px; }
  .hero__title { font-size: 32px; letter-spacing: 1px; }
  .hero__sub { font-size: 15px; }
  .hero__meta { gap: 18px; }
  .hero__meta strong { font-size: 24px; }
  .hero__phone { flex-direction: column; gap: 20px; }
  .phone, .phone--big, .feature__media .phone { width: 240px; }
  .hero__qr { margin: 0 auto; }
  .hero__qr img { width: 110px; height: 110px; }
  .idea { padding: 70px 0; }
  .idea__grid { grid-template-columns: 1fr; gap: 16px; }
  .section__title { font-size: 28px; }
  .section__sub { font-size: 14px; }
  .section__head { margin-bottom: 40px; }
  .features { padding: 70px 0; }
  .feature { margin-bottom: 70px; }
  .feature__body h3 { font-size: 24px; }
  .feature__lede { font-size: 15px; }
  .feature__list li { font-size: 14px; }
  .habit { padding: 70px 0; }
  .habit__stages { gap: 14px; }
  .stage { padding: 18px; }
  .cta { padding: 70px 0; }
  .cta .section__title { font-size: 28px; }
  .cta__sub { font-size: 15px; }
  .qr-card img { width: 150px; height: 150px; }
  .footer__inner { flex-direction: column; text-align: center; }
  .footer__meta { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}