:root {
  --ink: #221c14;
  --muted: #6e6152;
  --paper: #fff8ec;
  --paper-deep: #f2e1c7;
  --green: #17392b;
  --green-2: #24533f;
  --red: #7b2027;
  --gold: #b48a35;
  --gold-2: #e3c77e;
  --white: #fffdf8;
  --line: rgba(34, 28, 20, 0.14);
  --shadow: 0 24px 80px rgba(27, 20, 10, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  line-height: 1.75;
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(rgba(255, 248, 236, 0.92), rgba(255, 248, 236, 0.92)),
    repeating-linear-gradient(90deg, rgba(36, 83, 63, 0.035) 0 1px, transparent 1px 12px);
  pointer-events: none;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 14px 42px;
  color: var(--white);
  background: linear-gradient(180deg, rgba(12, 29, 22, 0.82), rgba(12, 29, 22, 0.24));
  transition: background-color 180ms ease, box-shadow 180ms ease, padding 180ms ease;
}

.site-header.is-scrolled {
  padding: 10px 42px;
  background: rgba(255, 253, 248, 0.96);
  box-shadow: 0 10px 30px rgba(34, 28, 20, 0.12);
  color: var(--green);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 172px;
  min-height: 48px;
}

.brand img {
  width: 100%;
  filter: brightness(0) invert(1);
}

.site-header.is-scrolled .brand img {
  filter: none;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  font-size: 0.9rem;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-weight: 700;
}

.nav a {
  position: relative;
  padding: 8px 0;
}

.nav a::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms ease;
}

.nav a:hover::after,
.nav a.is-active::after {
  transform: scaleX(1);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 4px;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-weight: 800;
  line-height: 1.2;
}

.header-cta {
  padding: 0 20px;
  color: var(--white);
  background: var(--red);
  box-shadow: 0 12px 26px rgba(123, 32, 39, 0.28);
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 92vh;
  padding: 116px 42px 56px;
  overflow: hidden;
  color: var(--white);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11, 25, 19, 0.96) 0%, rgba(19, 40, 30, 0.76) 36%, rgba(19, 40, 30, 0.28) 68%, rgba(19, 40, 30, 0.08) 100%),
    url("../images/hero-ochazuke-gift.png") center / cover no-repeat;
}

.hero-bg::after {
  position: absolute;
  inset: auto 0 0;
  height: 180px;
  content: "";
  background: linear-gradient(180deg, rgba(255, 248, 236, 0), var(--paper));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-2);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section .eyebrow,
.shop-section .eyebrow,
.tea-section .eyebrow {
  color: var(--red);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: 4.25rem;
  line-height: 1.12;
  font-weight: 800;
  text-shadow: 0 8px 34px rgba(0, 0, 0, 0.32);
  word-break: keep-all;
  overflow-wrap: normal;
}

.title-line {
  display: block;
}

h2 {
  margin-bottom: 22px;
  font-size: 2.5rem;
  line-height: 1.34;
  font-weight: 800;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.45;
}

.hero-lead {
  max-width: 600px;
  margin-bottom: 30px;
  font-size: 1.18rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.btn {
  min-width: 176px;
  padding: 15px 24px;
  border: 1px solid transparent;
  font-size: 0.96rem;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

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

.btn-primary {
  color: var(--white);
  background: var(--red);
  box-shadow: 0 16px 32px rgba(123, 32, 39, 0.32);
}

.btn-secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.54);
  background: rgba(255, 255, 255, 0.1);
}

.final-cta .btn-secondary {
  color: var(--green);
  border-color: rgba(23, 57, 43, 0.32);
  background: var(--white);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 650px;
  margin: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.32);
  border-bottom: 1px solid rgba(255, 255, 255, 0.32);
}

.hero-proof div {
  padding: 16px 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-proof div:last-child {
  border-right: 0;
}

.hero-proof dt {
  color: var(--gold-2);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
}

.hero-proof dd {
  margin: 0;
  font-size: 1.22rem;
  font-weight: 800;
}

.trust-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(1180px, calc(100% - 36px));
  margin: -42px auto 0;
  overflow: hidden;
  color: var(--white);
  background: var(--green);
  box-shadow: var(--shadow);
}

.trust-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  padding: 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.trust-item:last-child {
  border-right: 0;
}

.trust-mark {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  color: var(--green);
  background: var(--gold-2);
  border-radius: 50%;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.8rem;
  font-weight: 900;
}

.trust-item strong {
  line-height: 1.3;
}

.trust-item span:last-child {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 108px 0;
}

.intro-section {
  padding-top: 116px;
}

.section-heading {
  max-width: 860px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-heading p:last-child {
  color: var(--muted);
  font-size: 1.05rem;
}

.section-heading.compact {
  max-width: 760px;
}

.reason-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.reason-card {
  min-height: 292px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.78);
  box-shadow: 0 14px 42px rgba(34, 28, 20, 0.08);
}

.reason-card.accent {
  color: var(--white);
  background: var(--green);
}

.reason-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  color: var(--red);
  border: 1px solid currentColor;
  border-radius: 50%;
  font-weight: 800;
}

.reason-card.accent .reason-number {
  color: var(--gold-2);
}

.reason-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.reason-card.accent p {
  color: rgba(255, 255, 255, 0.82);
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 56px;
  align-items: center;
  padding: 92px max(42px, calc((100vw - 1180px) / 2));
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(23, 57, 43, 0.98), rgba(23, 57, 43, 0.9)),
    repeating-linear-gradient(135deg, rgba(227, 199, 126, 0.12) 0 1px, transparent 1px 18px);
}

.feature-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.feature-media img {
  aspect-ratio: 1;
  width: 100%;
  object-fit: cover;
  border: 8px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.feature-media img:nth-child(2) {
  margin-top: 58px;
}

.feature-copy p {
  color: rgba(255, 255, 255, 0.82);
}

.ingredient-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.ingredient-list li {
  padding: 8px 14px;
  border: 1px solid rgba(227, 199, 126, 0.45);
  border-radius: 999px;
  color: var(--gold-2);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.88rem;
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: center;
}

.split > img {
  width: 100%;
  aspect-ratio: 1.6;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.mini-proof {
  display: grid;
  gap: 4px;
  width: min(420px, 100%);
  margin-top: 28px;
  padding: 18px 22px;
  border-left: 4px solid var(--gold);
  background: var(--white);
}

.mini-proof span {
  color: var(--muted);
}

.lineup-section {
  padding-top: 40px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}

.product-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 48px rgba(34, 28, 20, 0.1);
}

.product-card.featured {
  border-color: rgba(180, 138, 53, 0.75);
  box-shadow: 0 26px 70px rgba(123, 32, 39, 0.18);
}

.product-card > img {
  width: 100%;
  aspect-ratio: 1.05;
  object-fit: cover;
  background: #fff;
}

.product-body {
  padding: 26px;
}

.tag {
  margin-bottom: 10px;
  color: var(--red);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
}

.product-body p:not(.tag) {
  color: var(--muted);
}

.price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 20px 0 18px;
  color: var(--red);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.1;
}

.price span {
  color: var(--muted);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--green);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-weight: 900;
}

.text-link::after {
  margin-left: 8px;
  content: ">";
}

.ribbon {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  padding: 8px 14px;
  color: var(--white);
  background: var(--red);
  border-radius: 4px;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
}

.gift-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  gap: 52px;
  align-items: center;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto 38px;
  padding: 56px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(123, 32, 39, 0.96), rgba(23, 57, 43, 0.96)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 14px);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.gift-section p {
  color: rgba(255, 255, 255, 0.84);
}

.gift-section img {
  justify-self: center;
  max-height: 360px;
  object-fit: contain;
  filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.28));
}

.tea-showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 28px;
  align-items: stretch;
}

.tea-visual {
  width: 100%;
  min-height: 100%;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.tea-products {
  display: grid;
  gap: 16px;
}

.tea-products article {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 18px;
  align-items: center;
  min-height: 142px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.tea-products img {
  width: 118px;
  height: 118px;
  object-fit: cover;
  border-radius: 6px;
  background: #fff;
}

.tea-products h3 {
  margin-bottom: 4px;
  font-size: 1.05rem;
}

.tea-products p,
.tea-products strong {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}

.tea-products p {
  color: var(--muted);
  font-size: 0.9rem;
}

.tea-products strong {
  color: var(--red);
}

.shop-section {
  padding: 92px 0;
  background: var(--paper-deep);
}

.shop-inner {
  display: grid;
  grid-template-columns: minmax(280px, 440px) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.shop-inner > img {
  width: 100%;
  aspect-ratio: 1.16;
  object-fit: cover;
  border: 10px solid var(--white);
  box-shadow: var(--shadow);
}

.shop-copy p {
  color: var(--muted);
}

.shop-data {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 28px 0 0;
}

.shop-data div {
  padding: 16px;
  border-top: 3px solid var(--gold);
  background: rgba(255, 253, 248, 0.72);
}

.shop-data dt {
  color: var(--red);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.78rem;
  font-weight: 900;
}

.shop-data dd {
  margin: 6px 0 0;
  font-weight: 800;
  line-height: 1.45;
}

.faq-section {
  padding-bottom: 80px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
  margin: 0 auto;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(34, 28, 20, 0.06);
}

summary {
  cursor: pointer;
  padding: 22px 26px;
  color: var(--green);
  font-weight: 800;
}

details p {
  margin: 0;
  padding: 0 26px 24px;
  color: var(--muted);
}

.final-cta {
  padding: 96px 42px 108px;
  text-align: center;
  color: var(--white);
  background:
    linear-gradient(rgba(23, 57, 43, 0.94), rgba(23, 57, 43, 0.94)),
    url("../images/ochaduke-tea.jpg") center / cover no-repeat;
}

.final-cta h2,
.final-cta p {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta .hero-actions {
  justify-content: center;
  margin-bottom: 0;
}

.site-footer {
  padding: 28px 42px 84px;
  color: rgba(255, 255, 255, 0.72);
  background: #15120e;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 0.82rem;
  text-align: center;
}

.site-footer p {
  margin: 0 0 4px;
}

.mobile-sticky {
  display: none;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (max-width: 1020px) {
  .site-header {
    grid-template-columns: auto 1fr;
    padding: 12px 22px;
  }

  .site-header.is-scrolled {
    padding: 10px 22px;
  }

  .nav {
    display: none;
  }

  .header-cta {
    justify-self: end;
  }

  h1 {
    font-size: 3.3rem;
  }

  h2 {
    font-size: 2.05rem;
  }

  .trust-strip,
  .reason-grid,
  .product-grid,
  .tea-showcase,
  .shop-inner {
    grid-template-columns: 1fr;
  }

  .trust-item {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .trust-item:last-child {
    border-bottom: 0;
  }

  .feature-band,
  .split,
  .gift-section {
    grid-template-columns: 1fr;
  }

  .feature-media {
    max-width: 620px;
  }

  .gift-section {
    padding: 40px;
  }

  .shop-data {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  body {
    padding-bottom: 62px;
  }

  .site-header {
    gap: 12px;
  }

  .brand {
    width: 134px;
  }

  .header-cta {
    min-height: 40px;
    padding: 0 12px;
    font-size: 0.82rem;
  }

  .hero {
    min-height: 88vh;
    padding: 104px 18px 42px;
  }

  .hero-bg {
    background:
      linear-gradient(180deg, rgba(11, 25, 19, 0.98) 0%, rgba(11, 25, 19, 0.72) 48%, rgba(11, 25, 19, 0.2) 100%),
      url("../images/hero-ochazuke-gift.png") 62% center / cover no-repeat;
  }

  h1 {
    font-size: 2.18rem;
    line-height: 1.24;
  }

  h2 {
    font-size: 1.72rem;
  }

  h3 {
    font-size: 1.16rem;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-actions,
  .final-cta .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .hero-proof {
    grid-template-columns: 1fr;
  }

  .hero-proof div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  }

  .hero-proof div:last-child {
    border-bottom: 0;
  }

  .section {
    width: min(100% - 28px, 1180px);
    padding: 74px 0;
  }

  .trust-strip {
    width: calc(100% - 28px);
    margin-top: -26px;
  }

  .trust-item {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .feature-band,
  .final-cta {
    padding-left: 18px;
    padding-right: 18px;
  }

  .feature-media {
    gap: 10px;
  }

  .feature-media img {
    border-width: 5px;
  }

  .feature-media img:nth-child(2) {
    margin-top: 34px;
  }

  .reason-card,
  .product-body {
    padding: 24px;
  }

  .gift-section {
    width: calc(100% - 28px);
    padding: 30px 22px;
  }

  .tea-products article {
    grid-template-columns: 92px 1fr;
    gap: 14px;
    min-height: 116px;
    padding: 14px;
  }

  .tea-products img {
    width: 92px;
    height: 92px;
  }

  .shop-section {
    padding: 70px 0;
  }

  .shop-inner {
    width: calc(100% - 28px);
    gap: 28px;
  }

  summary {
    padding: 18px 20px;
  }

  details p {
    padding: 0 20px 20px;
  }

  .site-footer {
    padding: 24px 18px 86px;
  }

  .mobile-sticky {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 62px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(23, 57, 43, 0.96);
    box-shadow: 0 -16px 36px rgba(34, 28, 20, 0.18);
  }

  .mobile-sticky a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
    font-weight: 900;
  }

  .mobile-sticky a:first-child {
    background: var(--red);
  }
}