/* ============================================
   米吉（こめきち）ティザーサイト v3
   Design System & Styles — Enhanced Edition
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Earth-tone Color Palette */
  --color-deep-green: #3A5A40;
  --color-deep-green-dark: #2C4A32;
  --color-gold: #C4A35A;
  --color-gold-light: #D4B96A;
  --color-earth-brown: #8B7355;
  --color-warm-brown: #6B5B45;
  --color-shu-iro: #C04828;
  --color-kaki-iro: #D47A38;

  /* Background & Text */
  --color-bg: #F5F0E8;
  --color-bg-alt: #EEE9DE;
  --color-bg-paper: #F8F4ED;
  --color-text: #2D2D2D;
  --color-text-light: #5A5A5A;
  --color-text-muted: #8A8A7A;

  /* Spacing */
  --section-padding: clamp(80px, 12vh, 140px);
  --content-max-width: 800px;

  /* Font Families */
  --font-serif: 'Noto Serif JP', 'Yu Mincho', '游明朝', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
}

/* --- Responsive line break helper --- */
/* SP only: show <br> on mobile, hide on desktop */
br.sp {
  display: none;
}

@media (max-width: 767px) {
  br.sp {
    display: inline;
  }
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* --- Washi Paper Texture Overlay (2 layers) --- */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* Washi fiber / watercolor blob layer */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.018;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 800 800' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='washi'%3E%3CfeTurbulence type='turbulence' baseFrequency='0.015' numOctaves='3' seed='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23washi)'/%3E%3C/svg%3E");
  background-size: 800px 800px;
}

/* ============================================
   Scroll Progress Bar
   ============================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 10000;
  background: transparent;
}

.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-kaki-iro));
  transition: width 0.1s linear;
}

/* ============================================
   Section Divider (和の装飾)
   ============================================ */
.section-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4vh 0;
}

.section-divider__dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-shu-iro);
  opacity: 0.5;
  position: relative;
}

.section-divider__dot::before,
.section-divider__dot::after {
  content: '';
  position: absolute;
  top: 50%;
  height: 1px;
  width: 32px;
  background: linear-gradient(90deg, transparent, var(--color-earth-brown));
  opacity: 0.25;
}

.section-divider__dot::before {
  right: calc(100% + 12px);
  background: linear-gradient(90deg, transparent, var(--color-earth-brown));
}

.section-divider__dot::after {
  left: calc(100% + 12px);
  background: linear-gradient(270deg, transparent, var(--color-earth-brown));
}

/* ============================================
   Floating Particles (golden dust)
   ============================================ */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-gold);
  opacity: 0;
  animation: particleDrift 12s ease-in-out infinite;
}

.particle:nth-child(1) { left: 10%; bottom: 0; animation-delay: 0s; animation-duration: 14s; }
.particle:nth-child(2) { left: 25%; bottom: 0; animation-delay: 2s; animation-duration: 11s; width: 2px; height: 2px; }
.particle:nth-child(3) { left: 45%; bottom: 0; animation-delay: 4s; animation-duration: 16s; }
.particle:nth-child(4) { left: 65%; bottom: 0; animation-delay: 1s; animation-duration: 13s; width: 2px; height: 2px; }
.particle:nth-child(5) { left: 80%; bottom: 0; animation-delay: 3s; animation-duration: 10s; }
.particle:nth-child(6) { left: 90%; bottom: 0; animation-delay: 5s; animation-duration: 15s; width: 2px; height: 2px; }
.particle:nth-child(7) { left: 35%; bottom: 0; animation-delay: 7s; animation-duration: 12s; }
.particle:nth-child(8) { left: 55%; bottom: 0; animation-delay: 6s; animation-duration: 14s; width: 4px; height: 4px; }

@keyframes particleDrift {
  0% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  10% {
    opacity: 0.15;
  }
  50% {
    opacity: 0.25;
  }
  90% {
    opacity: 0.08;
  }
  100% {
    transform: translateY(-100vh) translateX(30px);
    opacity: 0;
  }
}

/* ============================================
   Section 1: First View (Hero)
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  z-index: 0;
  will-change: transform;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  /* Ken Burns: slow zoom over 20s */
  animation: kenBurns 20s ease-in-out infinite alternate;
}

@keyframes kenBurns {
  0% {
    transform: scale(1) translate(0, 0);
  }
  100% {
    transform: scale(1.08) translate(-1%, -1%);
  }
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(30, 30, 25, 0.25) 0%,
    rgba(30, 30, 25, 0.40) 50%,
    rgba(30, 30, 25, 0.55) 100%
  );
  z-index: 1;
}

/* Vignette effect on hero */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  box-shadow: inset 0 0 150px rgba(0, 0, 0, 0.3);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 24px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s ease 0.3s forwards;
  /* Will be controlled by JS for scroll fade-out */
  will-change: opacity, transform;
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__brand {
  margin: 0 auto 28px;
  text-align: center;
}

.hero__logo {
  display: block;
  margin: 0 auto;
  width: clamp(180px, 40vw, 320px);
  height: auto;
  filter: brightness(0) invert(1) drop-shadow(0 2px 20px rgba(0, 0, 0, 0.3));
}

.hero__concept {
  font-family: var(--font-serif);
  font-size: clamp(18px, 4.2vw, 30px);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.08em;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.25);
}

/* Scroll indicator */
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.55);
  opacity: 0;
  animation: heroFadeIn 0.8s ease 1.5s forwards;
}

.hero__scroll-text {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 300;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.25);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -100%; }
  50% { top: 100%; }
  50.01% { top: -100%; }
  100% { top: 100%; }
}

/* ============================================
   Section 2: Frame (なぜお米なのか)
   ============================================ */
.frame {
  background-color: var(--color-bg);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  position: relative;
  overflow: hidden;
}

.frame__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--section-padding) 24px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.frame__text {
  position: relative;
}

/* Decorative horizontal lines around frame text */
.frame__text::before,
.frame__text::after {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.frame__text::before {
  margin-bottom: 40px;
}

.frame__text::after {
  margin-top: 40px;
  transition-delay: 0.8s;
}

.frame__text.is-revealed::before,
.frame__text.is-revealed::after {
  width: 120px;
}

.frame__line {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(20px, 5vw, 28px);
  line-height: 2.2;
  letter-spacing: 0.06em;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ============================================
   Section 3: Questions / Story Teaser
   ============================================ */
.questions {
  background-color: var(--color-bg);
  padding: var(--section-padding) 0;
  position: relative;
  overflow: hidden;
  /* 水彩にじみ風の円形グラデーション */
  background-image:
    radial-gradient(ellipse 600px 500px at 85% 8%, rgba(196, 163, 90, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 500px 400px at 10% 45%, rgba(139, 115, 85, 0.03) 0%, transparent 70%),
    radial-gradient(ellipse 400px 350px at 75% 70%, rgba(192, 72, 40, 0.015) 0%, transparent 70%),
    radial-gradient(ellipse 450px 400px at 20% 85%, rgba(196, 163, 90, 0.025) 0%, transparent 70%);
}

/* 稲穂シルエット（右側・上） */
.questions::after {
  content: '';
  position: absolute;
  top: 15%;
  right: -20px;
  width: 180px;
  height: 500px;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 400'%3E%3Cpath d='M60 400 Q58 350 60 300 Q63 250 58 200 Q55 150 60 100 Q62 60 58 20' stroke='%238B7355' stroke-width='2' fill='none'/%3E%3Cellipse cx='52' cy='35' rx='5' ry='12' fill='%238B7355' transform='rotate(-25 52 35)'/%3E%3Cellipse cx='65' cy='50' rx='5' ry='11' fill='%238B7355' transform='rotate(20 65 50)'/%3E%3Cellipse cx='48' cy='65' rx='4' ry='10' fill='%238B7355' transform='rotate(-30 48 65)'/%3E%3Cellipse cx='68' cy='80' rx='4' ry='10' fill='%238B7355' transform='rotate(15 68 80)'/%3E%3Cellipse cx='53' cy='95' rx='4' ry='9' fill='%238B7355' transform='rotate(-15 53 95)'/%3E%3Cellipse cx='63' cy='108' rx='3' ry='8' fill='%238B7355' transform='rotate(25 63 108)'/%3E%3Cellipse cx='50' cy='120' rx='3' ry='8' fill='%238B7355' transform='rotate(-20 50 120)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
}

/* 稲穂シルエット（左下・異なる角度） */
.questions__ine-left {
  position: absolute;
  bottom: 8%;
  left: -15px;
  width: 130px;
  height: 420px;
  pointer-events: none;
  opacity: 0.03;
  transform: scaleX(-1) rotate(8deg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 380'%3E%3Cpath d='M50 380 Q52 320 48 260 Q45 200 50 140 Q53 90 48 40 Q46 20 50 5' stroke='%236B5B45' stroke-width='1.8' fill='none'/%3E%3Cellipse cx='44' cy='20' rx='4' ry='10' fill='%236B5B45' transform='rotate(-30 44 20)'/%3E%3Cellipse cx='56' cy='38' rx='4' ry='10' fill='%236B5B45' transform='rotate(18 56 38)'/%3E%3Cellipse cx='42' cy='55' rx='3.5' ry='9' fill='%236B5B45' transform='rotate(-22 42 55)'/%3E%3Cellipse cx='58' cy='72' rx='3.5' ry='9' fill='%236B5B45' transform='rotate(12 58 72)'/%3E%3Cellipse cx='46' cy='88' rx='3' ry='8' fill='%236B5B45' transform='rotate(-18 46 88)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
}

.questions__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.question-block {
  margin-bottom: 2vh;
}

.question-block:last-child {
  margin-bottom: 0;
}

/* Question text with delayed 2-line fade + blur */
.question-text {
  text-align: center;
  padding: 15vh 0;
  position: relative;
}

/* Brush stroke underline that draws in */
.question-text::before {
  content: '';
  position: absolute;
  bottom: calc(15vh - 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    rgba(192, 72, 40, 0.2) 20%,
    rgba(192, 72, 40, 0.35) 50%,
    rgba(192, 72, 40, 0.2) 80%,
    transparent
  );
  border-radius: 2px;
  transition: width 1.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.4s;
}

.question-text.has-revealed::before {
  width: clamp(80px, 30vw, 200px);
}

/* 朱色の落款風ドット（問いかけテキストの下に） */
.question-text::after {
  content: '';
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-shu-iro);
  opacity: 0;
  margin: 28px auto 0;
  transform: scale(0);
  transition: opacity 1.2s ease 0.6s, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.6s;
}

.question-text.has-revealed::after {
  opacity: 0.45;
  transform: scale(1);
}

.question-line {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(20px, 5.5vw, 30px);
  line-height: 2;
  letter-spacing: 0.06em;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Question images: clip-path curtain reveal */
.question-image {
  width: 100%;
  height: 60vh;
  overflow: hidden;
  border-radius: 2px;
  position: relative;
  opacity: 0;
  clip-path: inset(8% 4% 8% 4%);
  transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              clip-path 1.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.question-image.is-visible {
  opacity: 1;
  clip-path: inset(0% 0% 0% 0%);
}

/* Full-bleed variant: 100vw, taller */
.question-image--full {
  width: 100vw;
  height: 75vh;
  border-radius: 0;
  margin-left: 0;
  position: relative;
  z-index: 1;
}

/* Vignette overlay on photos */
.question-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  box-shadow: inset 0 0 120px rgba(0, 0, 0, 0.2);
  z-index: 1;
}

/* Warm tone + gradient overlay */
.question-image::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(45, 45, 45, 0.08) 0%,
    rgba(196, 163, 90, 0.04) 40%,
    rgba(139, 115, 85, 0.08) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.question-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform;
  transition: transform 0.6s ease;
}

/* ============================================
   Section 4: Circulation Hint
   ============================================ */
.circulation {
  background-color: var(--color-bg-alt);
  padding: var(--section-padding) 0;
  overflow: hidden;
  position: relative;
  background-image:
    radial-gradient(ellipse 500px 400px at 80% 30%, rgba(58, 90, 64, 0.025) 0%, transparent 70%),
    radial-gradient(ellipse 400px 350px at 15% 70%, rgba(196, 163, 90, 0.02) 0%, transparent 70%);
}

/* Gradient transition from questions to circulation */
.circulation::before {
  content: '';
  position: absolute;
  top: -60px;
  left: 0;
  width: 100%;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-alt));
  pointer-events: none;
}

/* 稲穂シルエット（左側・反転） */
.circulation::after {
  content: '';
  position: absolute;
  bottom: 10%;
  left: -10px;
  width: 140px;
  height: 400px;
  pointer-events: none;
  opacity: 0.035;
  transform: scaleX(-1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 400'%3E%3Cpath d='M60 400 Q58 350 60 300 Q63 250 58 200 Q55 150 60 100 Q62 60 58 20' stroke='%238B7355' stroke-width='2' fill='none'/%3E%3Cellipse cx='52' cy='35' rx='5' ry='12' fill='%238B7355' transform='rotate(-25 52 35)'/%3E%3Cellipse cx='65' cy='50' rx='5' ry='11' fill='%238B7355' transform='rotate(20 65 50)'/%3E%3Cellipse cx='48' cy='65' rx='4' ry='10' fill='%238B7355' transform='rotate(-30 48 65)'/%3E%3Cellipse cx='68' cy='80' rx='4' ry='10' fill='%238B7355' transform='rotate(15 68 80)'/%3E%3Cellipse cx='53' cy='95' rx='4' ry='9' fill='%238B7355' transform='rotate(-15 53 95)'/%3E%3Cellipse cx='63' cy='108' rx='3' ry='8' fill='%238B7355' transform='rotate(25 63 108)'/%3E%3Cellipse cx='50' cy='120' rx='3' ry='8' fill='%238B7355' transform='rotate(-20 50 120)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
}

.circulation__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.circulation__title {
  font-family: var(--font-serif);
  font-size: clamp(22px, 5vw, 32px);
  letter-spacing: 0.12em;
  color: var(--color-text);
  margin-bottom: clamp(48px, 8vh, 80px);
}

/* Three keywords with dashes */
.circulation__keywords {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(12px, 3vw, 28px);
  margin-bottom: clamp(48px, 8vh, 80px);
  flex-wrap: wrap;
}

.circulation__word {
  font-family: var(--font-serif);
  font-size: clamp(20px, 5vw, 28px);
  letter-spacing: 0.1em;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(14px) scale(0.95);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              text-shadow 1.5s ease;
}

.circulation__word.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  text-shadow: 0 0 20px rgba(196, 163, 90, 0.2);
}

.circulation__dash {
  font-family: var(--font-serif);
  font-size: clamp(16px, 3vw, 22px);
  color: var(--color-gold);
  opacity: 0;
  transform: scaleX(0);
  transition: opacity 0.5s ease, transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.circulation__dash.is-visible {
  opacity: 1;
  transform: scaleX(1);
}

/* Copy below keywords */
.circulation__copy {
  max-width: 500px;
  margin: 0 auto;
}

.circulation__copy p {
  font-family: var(--font-serif);
  font-size: clamp(16px, 3.5vw, 22px);
  line-height: 2;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
}

/* ============================================
   Section 5: Preview / 予告
   ============================================ */
.preview {
  background-color: var(--color-deep-green-dark);
  padding: var(--section-padding) 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* Gradient transition from circulation to preview */
.preview::before {
  content: '';
  position: absolute;
  top: -80px;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(to bottom, var(--color-bg-alt), var(--color-deep-green-dark));
  pointer-events: none;
}

/* 青海波風パターン（右下に配置） */
.preview::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 300px;
  height: 300px;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Ccircle cx='100' cy='200' r='80' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='100' cy='200' r='60' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='100' cy='200' r='40' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='0' cy='200' r='80' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='0' cy='200' r='60' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='0' cy='200' r='40' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='200' cy='200' r='80' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='200' cy='200' r='60' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='200' cy='200' r='40' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='50' cy='100' r='80' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='50' cy='100' r='60' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='50' cy='100' r='40' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='150' cy='100' r='80' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='150' cy='100' r='60' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3Ccircle cx='150' cy='100' r='40' stroke='%23C4A35A' stroke-width='1' fill='none'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

.preview__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.preview__tagline {
  font-family: var(--font-serif);
  font-size: clamp(22px, 5.5vw, 34px);
  letter-spacing: 0.08em;
  line-height: 1.6;
  margin-bottom: clamp(32px, 5vh, 48px);
  /* Golden glow effect on reveal */
  text-shadow: 0 0 0 transparent;
  transition: text-shadow 2s ease;
}

.preview__tagline.is-visible {
  text-shadow: 0 0 30px rgba(196, 163, 90, 0.3), 0 0 60px rgba(196, 163, 90, 0.1);
}

.preview__heading {
  font-family: var(--font-serif);
  font-size: clamp(17px, 4vw, 24px);
  letter-spacing: 0.08em;
  line-height: 1.6;
  opacity: 0.9;
  margin-bottom: clamp(32px, 5vh, 56px);
}

.preview__copy {
  position: relative;
}

.preview__copy p {
  font-family: var(--font-sans);
  font-size: clamp(14px, 3.2vw, 17px);
  font-weight: 300;
  line-height: 2.2;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

/* Decorative line above copy */
.preview__copy::before {
  content: '';
  display: block;
  width: 0;
  height: 1px;
  margin: 0 auto clamp(24px, 4vh, 40px);
  background: linear-gradient(90deg, transparent, rgba(196, 163, 90, 0.4), transparent);
  transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.preview__copy.is-visible::before {
  width: 80px;
}

/* ============================================
   Section 6: CTA (List Capture)
   ============================================ */
.cta {
  background-color: var(--color-deep-green);
  padding: var(--section-padding) 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

/* 円弧（円相の断片のような装飾） */
.cta::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 1px solid rgba(196, 163, 90, 0.08);
  pointer-events: none;
}

.cta::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(196, 163, 90, 0.06);
  pointer-events: none;
}

.cta__inner {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.cta__heading {
  font-family: var(--font-serif);
  font-size: clamp(18px, 4.5vw, 26px);
  line-height: 1.9;
  letter-spacing: 0.06em;
  margin-bottom: 48px;
}

.cta__sub {
  font-family: var(--font-serif);
  font-size: clamp(15px, 3.5vw, 20px);
  letter-spacing: 0.08em;
  line-height: 1.8;
  opacity: 0.7;
}

/* ============================================
   Section 7: Footer
   ============================================ */
.footer {
  background-color: var(--color-deep-green-dark);
  color: rgba(255, 255, 255, 0.65);
  padding: 48px 0;
  text-align: center;
  position: relative;
}

/* Thin top line accent */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0.4;
}

.footer__inner {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer__brand {
  margin-bottom: 24px;
}

.footer__brand-name {
  font-family: var(--font-serif);
  font-size: clamp(18px, 4vw, 24px);
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 4px;
}

.footer__brand-ruby {
  font-size: 0.6em;
  letter-spacing: 0.05em;
}

.footer__company-name {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.6;
}

.footer__representative {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.5;
  margin-top: 4px;
}

.footer__contact {
  margin-bottom: 20px;
}

.footer__email {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 2px;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.footer__email:hover {
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.4);
}

.footer__social {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.footer__social-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  transform: translateY(-2px);
}

.footer__social-link svg {
  width: 18px;
  height: 18px;
}

.footer__copyright {
  font-size: 11px;
  font-weight: 300;
  opacity: 0.5;
  letter-spacing: 0.05em;
}

/* ============================================
   Animation Utility: fade-in
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ============================================
   Enso (円相) Decorative Circle
   ============================================ */
.enso-circle {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.5s ease;
}

.enso-circle.is-visible {
  opacity: 1;
  border-color: rgba(196, 163, 90, 0.12);
  animation: ensoSpin 30s linear infinite;
}

.enso-circle--right {
  top: 15%;
  right: -60px;
}

.enso-circle--left {
  bottom: 20%;
  left: -80px;
  width: 180px;
  height: 180px;
  animation-direction: reverse;
}

@keyframes ensoSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 円相のにじみ効果（dash array） */
.enso-circle::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  border-radius: 50%;
  border: 1px solid rgba(196, 163, 90, 0.06);
  transform: scale(1.15);
}

/* ============================================
   Section Transition Reveal Lines
   ============================================ */
.reveal-line {
  display: block;
  width: 0;
  height: 1px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  transition: width 1.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-line.is-visible {
  width: clamp(120px, 25vw, 250px);
}

/* ============================================
   Breathing Glow (Frame section background)
   ============================================ */
.frame--glow {
  background-image:
    radial-gradient(ellipse 600px 400px at 50% 50%, rgba(196, 163, 90, 0) 0%, transparent 70%);
  transition: background-image 2s ease;
}

.frame--glow.is-glowing {
  animation: frameBreath 6s ease-in-out infinite;
}

@keyframes frameBreath {
  0%, 100% {
    background-image:
      radial-gradient(ellipse 600px 400px at 50% 50%, rgba(196, 163, 90, 0) 0%, transparent 70%);
  }
  50% {
    background-image:
      radial-gradient(ellipse 600px 400px at 50% 50%, rgba(196, 163, 90, 0.04) 0%, transparent 70%);
  }
}

/* ============================================
   Responsive
   ============================================ */
@media (min-width: 768px) {
  .question-line {
    font-size: clamp(24px, 3vw, 30px);
  }

  .question-text {
    padding: 12vh 0;
  }

  .question-image--full {
    height: 80vh;
  }

  .circulation__keywords {
    flex-wrap: nowrap;
  }
}

@media (max-width: 767px) {
  /* 稲穂シルエットをスマホでは控えめに */
  .questions::after {
    width: 100px;
    opacity: 0.025;
    right: -30px;
  }

  .questions__ine-left {
    width: 70px;
    opacity: 0.02;
    left: -25px;
  }

  .circulation::after {
    width: 80px;
    opacity: 0.02;
    left: -20px;
  }

  .preview::after {
    width: 180px;
    height: 180px;
    opacity: 0.03;
  }

  .cta::before {
    width: 180px;
    height: 180px;
  }

  .cta::after {
    width: 120px;
    height: 120px;
  }
}

@media (max-width: 374px) {
  .hero__concept {
    font-size: 17px;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}