/* =========================================
   基本設定
   ========================================= */
:root {
  --color-primary: #3a6fd8;
  --color-primary-dark: #2b57b3;
  --rgb-primary: 58, 111, 216;
  --color-secondary: #3fb59e;
  --color-accent: #f2994a;
  --color-text: #1f2a37;
  --color-text-sub: #5b6676;
  --color-bg: #ffffff;
  --color-bg-gray: #f4f7fb;
  --color-bg-soft: #eef4fd;
  --color-border: #e2e8f0;
  --color-dark: #152238;
  --gradient: linear-gradient(135deg, #3a6fd8 0%, #3fb59e 100%);
  --radius: 16px;
  --shadow: 0 10px 30px rgba(31, 42, 55, 0.08);
  --shadow-hover: 0 18px 40px rgba(var(--rgb-primary), 0.16);
  --header-height: 72px;
  --font-base: "Noto Sans JP", sans-serif;
  --font-en: "Poppins", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body.is-menu-open {
  overflow: hidden;
}

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

ul,
ol {
  list-style: none;
}

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.container--narrow {
  max-width: 760px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sp-only {
  display: none;
}

/* =========================================
   ボタン
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}

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

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(var(--rgb-primary), 0.35);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 10px 24px rgba(var(--rgb-primary), 0.45);
}

.btn--ghost {
  background: #fff;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn--sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn--block {
  width: 100%;
}

/* =========================================
   ヘッダー
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  transition: background 0.3s, box-shadow 0.3s;
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient);
  color: #fff;
  font-size: 0.95rem;
}

.logo--light {
  color: #fff;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  position: relative;
  font-weight: 500;
  font-size: 0.95rem;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s;
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hamburger {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  z-index: 110;
}

.hamburger span {
  position: absolute;
  left: 10px;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s, top 0.3s;
}

.hamburger span:nth-child(1) { top: 14px; }
.hamburger span:nth-child(2) { top: 21px; }
.hamburger span:nth-child(3) { top: 28px; }

.hamburger.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* =========================================
   ヒーロー
   ========================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(180deg, var(--color-bg-soft) 0%, #ffffff 100%);
}

.hero__bg .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: float 12s ease-in-out infinite;
}

.blob--1 {
  width: 420px;
  height: 420px;
  background: #9cc3f5;
  top: -120px;
  right: -100px;
}

.blob--2 {
  width: 360px;
  height: 360px;
  background: #a8e0d2;
  bottom: -140px;
  left: -120px;
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.08); }
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 48px;
}

.hero__label {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: 20px;
  border-radius: 999px;
  background: rgba(var(--rgb-primary), 0.1);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.hero__title {
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}

.hero__lead {
  color: var(--color-text-sub);
  margin-bottom: 36px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* 完成サイトのモックアップ（PC・スマホ） */
.mockup {
  position: relative;
  padding: 0 48px 32px 0;
}

.mockup__screen {
  overflow: hidden;
  border: 10px solid #1f2a37;
  border-bottom-width: 14px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 30px 60px rgba(31, 42, 55, 0.18);
}

.mockup__bar {
  display: flex;
  gap: 5px;
  padding: 7px 10px;
  background: #eef1f5;
}

.mockup__bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #cfd6e0;
}

.mockup__stand {
  width: 22%;
  height: 14px;
  margin: 0 auto;
  border-radius: 0 0 8px 8px;
  background: #cfd6e0;
}

.mockup__phone {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 30%;
  min-width: 120px;
  overflow: hidden;
  border: 7px solid #1f2a37;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 24px 48px rgba(31, 42, 55, 0.25);
  animation: phone-float 6s ease-in-out infinite;
}

@keyframes phone-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* モックアップ内のサンプルサイト（カフェ） */
.sample {
  background: #fffaf3;
  color: #4a3728;
  font-size: 0.7rem;
  line-height: 1.5;
}

.sample__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
}

.sample__logo {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.8rem;
  color: #8a5a3b;
}

.sample__menu {
  display: flex;
  gap: 12px;
  font-size: 0.62rem;
}

.sample__burger {
  width: 14px;
  height: 10px;
  border-top: 2px solid #8a5a3b;
  border-bottom: 2px solid #8a5a3b;
}

.sample__hero {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 8px;
  min-height: 130px;
  padding: 16px 20px;
  background: linear-gradient(120deg, rgba(74, 55, 40, 0.55), rgba(74, 55, 40, 0.1)),
    linear-gradient(135deg, #e7b98f 0%, #c98b62 100%);
  color: #fff;
}

.sample__title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}

.sample__btn {
  padding: 3px 12px;
  border-radius: 999px;
  background: #fff;
  color: #8a5a3b;
  font-size: 0.6rem;
  font-weight: 700;
}

.sample__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 14px;
}

.sample__card {
  padding: 6px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(74, 55, 40, 0.08);
  font-size: 0.6rem;
  text-align: center;
}

.sample__img {
  display: grid;
  place-items: center;
  height: 42px;
  margin-bottom: 4px;
  border-radius: 6px;
  background: #f3e3d3;
  font-size: 1.1rem;
}

.sample--sp .sample__nav {
  padding: 8px 10px;
}

.sample--sp .sample__logo {
  font-size: 0.6rem;
}

.sample--sp .sample__hero {
  min-height: 110px;
  padding: 12px;
}

.sample--sp .sample__title {
  font-size: 0.8rem;
}

.sample--sp .sample__card {
  margin: 10px;
}

/* 実績数値 */
.stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 72px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stats__item {
  padding: 28px 16px;
  text-align: center;
}

.stats__item + .stats__item {
  border-left: 1px solid var(--color-border);
}

.stats__num {
  font-family: var(--font-en);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.stats__num small {
  font-family: var(--font-base);
  font-size: 1rem;
  margin-left: 2px;
}

.stats__label {
  color: var(--color-text-sub);
  font-size: 0.9rem;
}

/* =========================================
   セクション共通
   ========================================= */
.section {
  padding: 110px 0;
}

.section--gray {
  background: var(--color-bg-gray);
}

.section__head {
  text-align: center;
  margin-bottom: 60px;
}

.section__en {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  margin-top: 4px;
}

.section__desc {
  margin-top: 12px;
  color: var(--color-text-sub);
}

/* =========================================
   強み
   ========================================= */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  padding: 40px 32px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--color-border);
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.feature-card__icon {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 20px;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 24px rgba(var(--rgb-primary), 0.25);
  transition: transform 0.3s;
}

.feature-card__icon svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-card:hover .feature-card__icon {
  transform: rotate(-6deg) scale(1.06);
}

.feature-card__title {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.feature-card__text {
  color: var(--color-text-sub);
  font-size: 0.95rem;
  text-align: left;
}

/* =========================================
   サービス
   ========================================= */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service {
  display: flex;
  gap: 24px;
  padding: 32px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.service__num {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.service__title {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.service__text {
  color: var(--color-text-sub);
  font-size: 0.95rem;
}

/* =========================================
   料金
   ========================================= */
.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: center;
}

.plan {
  position: relative;
  padding: 44px 32px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: transform 0.3s, box-shadow 0.3s;
}

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

.plan--recommend {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-hover);
  padding: 56px 32px;
}

.plan__badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 20px;
  border-radius: 999px;
  background: var(--gradient);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  white-space: nowrap;
}

.plan__name {
  font-size: 1.3rem;
  text-align: center;
}

.plan__target {
  text-align: center;
  color: var(--color-text-sub);
  font-size: 0.9rem;
}

.plan__price {
  margin: 20px 0 24px;
  text-align: center;
  font-family: var(--font-en);
  font-size: 2.4rem;
  font-weight: 700;
}

.plan__price span,
.plan__price small {
  font-size: 1.1rem;
}

.plan__list {
  margin-bottom: 32px;
}

.plan__list li {
  position: relative;
  padding: 8px 0 8px 28px;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.95rem;
}

.plan__list li::before {
  content: "✓";
  position: absolute;
  left: 4px;
  color: var(--color-primary);
  font-weight: 700;
}

/* =========================================
   制作の流れ
   ========================================= */
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.flow__step {
  position: relative;
  padding: 32px 24px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.flow__step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -18px;
  width: 12px;
  height: 12px;
  border-top: 3px solid var(--color-primary);
  border-right: 3px solid var(--color-primary);
  transform: translateY(-50%) rotate(45deg);
}

.flow__num {
  display: inline-block;
  padding: 2px 12px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-en);
  font-size: 0.8rem;
}

.flow__title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.flow__text {
  color: var(--color-text-sub);
  font-size: 0.9rem;
}

/* =========================================
   FAQ
   ========================================= */
.faq__item {
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--color-border);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq__q {
  position: relative;
  width: 100%;
  padding: 22px 60px 22px 56px;
  text-align: left;
  font-weight: 700;
}

.faq__q::before {
  content: "Q";
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-en);
  font-size: 1.3rem;
  color: var(--color-primary);
}

.faq__icon {
  position: absolute;
  right: 24px;
  top: 50%;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
}

.faq__icon::before,
.faq__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.3s;
}

.faq__icon::after {
  transform: rotate(90deg);
}

.faq__item.is-open .faq__icon::after {
  transform: rotate(0deg);
}

.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq__a p {
  position: relative;
  padding: 0 24px 24px 56px;
  color: var(--color-text-sub);
}

.faq__a p::before {
  content: "A";
  position: absolute;
  left: 22px;
  top: -4px;
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
}

/* =========================================
   お問い合わせ
   ========================================= */
.section--contact {
  background: linear-gradient(180deg, #ffffff 0%, var(--color-bg-soft) 100%);
}

.form {
  padding: 48px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.form__row {
  margin-bottom: 24px;
}

.form__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-weight: 700;
}

.form__required {
  padding: 0 8px;
  border-radius: 4px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
}

.form__input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-bg-gray);
  font: inherit;
  color: inherit;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(var(--rgb-primary), 0.12);
}

.form__input.is-error {
  border-color: #e5484d;
  background: #fff5f5;
}

.form__error {
  min-height: 1.4em;
  margin-top: 4px;
  color: #e5484d;
  font-size: 0.85rem;
}

.form__success {
  margin-top: 16px;
  text-align: center;
  color: #1a9d55;
  font-weight: 700;
}

/* =========================================
   フッター
   ========================================= */
.footer {
  padding: 40px 0;
  background: var(--color-dark);
  color: #a3a7c2;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: 0.85rem;
}

/* ページトップボタン */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.3rem;
  box-shadow: 0 8px 20px rgba(var(--rgb-primary), 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  z-index: 90;
}

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

/* =========================================
   スクロールアニメーション
   ========================================= */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-in { opacity: 1; transform: none; transition: none; }
  .blob, .mockup__phone { animation: none; }
}

/* =========================================
   レスポンシブ（タブレット）
   ========================================= */
@media (max-width: 960px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__content {
    text-align: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    max-width: 560px;
    width: 100%;
    margin: 0 auto;
  }

  .features,
  .plans {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .plans {
    gap: 40px;
  }

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

  .flow__step::after {
    display: none;
  }
}

/* =========================================
   レスポンシブ（スマホ）
   ========================================= */
@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .pc-only {
    display: none;
  }

  .sp-only {
    display: inline;
  }

  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.98);
    display: grid;
    place-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 28px;
    font-size: 1.2rem;
  }

  .hero {
    padding: calc(var(--header-height) + 48px) 0 60px;
  }

  .stats {
    margin-top: 48px;
  }

  .stats__item {
    padding: 20px 8px;
  }

  .stats__num {
    font-size: 1.8rem;
  }

  .stats__num small {
    font-size: 0.8rem;
  }

  .stats__label {
    font-size: 0.75rem;
  }

  .section {
    padding: 80px 0;
  }

  .section__head {
    margin-bottom: 40px;
  }

  .services,
  .flow {
    grid-template-columns: 1fr;
  }

  .service {
    padding: 24px;
  }

  .form {
    padding: 28px 20px;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}