/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --dark: #141415;
  --black: #000000;
  --white: #ffffff;
  --red: #9d0000;
  --gold: #9a7c06;
  --gray-bg: #f0f0f0;
  --gray-1: #959595;
  --gray-2: #7b7b7b;
  --gray-3: #cfcfcf;
  --gray-4: #d5d5d5;
  --gray-5: #ebebeb;
  --gray-6: #575757;
  --gray-7: #353535;
  --gray-8: #565656;
  --gray-9: #515151;
  --faq-bg: #e2e2e2;
  --feature-card-bg: #454237;
  --feature-card-stroke: #6f6b5e;
  --faq-btn: #6e6e7b;
  --font-jp: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --font-mincho: 'Zen Old Mincho', serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-jp);
  color: var(--white);
  background: var(--dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.container-narrow { max-width: 1100px; margin: 0 auto; padding: 0 40px; }

/* ===== FIXED VIDEO BACKGROUND ===== */
.video-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
  pointer-events: none;
}

/* ===== HEADER (1920x130, bg:#000, 2-row layout) ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
}
.header-row-top {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 12px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-logo img {
  /*height: 26px;
  width: auto;*/
}
.header-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-group img {
  height: 26px;
  width: auto;
}
.header-group span {
  font-size: 12px;
  color: var(--white);
  white-space: nowrap;
}
.header-row-bottom {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 70px;
  gap: 20px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.header-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  white-space: nowrap;
  transition: opacity 0.2s;
}
.header-nav a:hover { opacity: 0.7; }
.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-h-contact {
  height: 46px;
  background: transparent;
  color: var(--white);
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 16px;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.btn-h-contact:hover { opacity: 0.7; }
.btn-h-contact svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.btn-h-faq {
  width: 140px;
  height: 46px;
  background: var(--faq-btn);
  color: var(--white);
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
}
.btn-h-faq:hover { opacity: 0.85; }
.btn-h-register {
  height: 46px;
  padding: 0 24px;
  background: var(--white);
  color: var(--red);
  font-size: 15px;
  font-weight: 500;
  border: 2px solid var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  transition: background 0.2s;
}
.btn-h-register:hover { background: #f5f5f5; }

/* SP Header Actions (hidden on PC) */
.header-sp-actions {
  display: none;
  align-items: center;
  gap: 10px;
}
.btn-sp-login {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  height: 46px;
  background: var(--gold);
  color: var(--white);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.btn-sp-menu {
  width: 50px;
  height: 50px;
  background: var(--white);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 13px;
  cursor: pointer;
  border: none;
}
.btn-sp-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--dark);
  border-radius: 2px;
}

/* ===== HERO (1920x1080) ===== */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: transparent;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding-top: 132px;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 60px;
  width: 100%;
  flex: 1;
}
.hero-text {
  flex: 1;
  min-width: 0;
}
.hero-desc {
  font-family: var(--font-mincho);
  font-size: 18px;
  font-weight: 400;
  line-height: 2.2;
  color: var(--white);
  margin-bottom: 30px;
}
.hero-tagline {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.hero-tagline .line {
  width: 130px;
  height: 1px;
  background: var(--gray-1);
  flex-shrink: 0;
}
.hero-tagline span {
  font-family: var(--font-en);
  font-size: 16px;
  font-weight: 400;
  color: var(--gray-1);
  white-space: nowrap;
}
.hero-title {
  margin: 0 0 40px;
  padding: 0;
  font-size: inherit;
  font-weight: inherit;
}
.hero-title-line1 {
  display: block;
  font-family: var(--font-mincho);
  font-size: 90px;
  font-weight: 400;
  color: var(--white);
  line-height: 1.5;
  letter-spacing: 0.08em;
}
.hero-title-line2 {
  display: block;
  font-family: var(--font-jp);
  font-size: 90px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.5;
  letter-spacing: 0.08em;
  margin-top: -50px;
}

/* CTA Button with offset shadow */
.btn-cta-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 24px;
}
.btn-cta-shadow {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 300px;
  height: 54px;
  border: 1px solid var(--white);
}
.btn-cta {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 300px;
  height: 54px;
  background: var(--white);
  border: 1px solid var(--black);
  font-size: 20px;
  font-weight: 500;
  color: var(--red);
  transition: background 0.2s;
}
.btn-cta:hover { background: #f5f5f5; }

.hero-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 16px;
  font-weight: 500;
  color: var(--gray-4);
  transition: color 0.2s;
}
.hero-login:hover { color: var(--white); }
.hero-login svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Hero visual */
.hero-visual {
  flex-shrink: 0;
  width: 460px;
  position: relative;
}
.hero-visual img {
  width: 100%;
  height: auto;
}

/* ===== RATES BAR (inside hero bottom) ===== */
.hero-rates {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 0;
}
.hero-rates-inner {
  border-radius: 8px;
  overflow: hidden;
}
.hero-rates-note {
  font-size: 14px;
  color: var(--gray-3);
  text-align: right;
  padding: 10px 0 20px;
}
.rates-top {
  background: var(--gray-6);
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 10px;
}
.rates-top-title {
  font-size: 20px;
  font-weight: 500;
  color: var(--white);
}
.rates-top-sub {
  font-size: 20px;
  font-weight: 500;
  color: var(--gray-3);
}
.rates-bottom {
  background: #151515;
  height: 70px;
  display: flex;
  align-items: center;
  padding: 0 12px;
}
.rates-coins {
  display: flex;
  align-items: center;
  flex: 1;
  height: 100%;
}
.rates-coin {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  height: 100%;
  position: relative;
  flex: 1;
}
.rates-coin:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: -5px;
  bottom: -5px;
  width: 1px;
  background: var(--gray-7);
}
.rates-coin-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
}
.rates-coin-info {
  display: flex;
  flex-direction: column;
}
.rates-coin-symbol {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 500;
  color: var(--white);
  line-height: 1.1;
}
.rates-coin-name {
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 500;
  color: var(--gray-2);
  line-height: 1.2;
}
.rates-coin-value {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 400;
  color: var(--white);
  margin-left: auto;
  white-space: nowrap;
}

/* ===== BANNER SECTION (670x140, after hero) ===== */
.banner-section {
  display: flex;
  justify-content: center;
  padding: 60px 20px;
}
.banner-link {
  display: block;
  max-width: 670px;
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid #b3b3b3;
  transition: transform 0.2s, box-shadow 0.2s;
}
.banner-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.banner-link img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== ABOUT SECTION (1920x722, gradient bg) ===== */
.about {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}
.about-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg,
    rgba(80, 70, 40, 0.5) 0%,
    rgba(50, 45, 30, 0.6) 25%,
    rgba(30, 28, 22, 0.8) 50%,
    rgba(20, 20, 21, 0.9) 75%,
    #141415 100%
  );
}
.about-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 30%, rgba(154, 124, 6, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 70%, rgba(154, 124, 6, 0.1) 0%, transparent 50%);
}
.about-coin-left {
  position: absolute;
  left: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 302px;
  z-index: 1;
  opacity: 0.7;
}
.about-coin-right {
  position: absolute;
  right: -40px;
  bottom: 60px;
  width: 236px;
  z-index: 1;
  opacity: 0.7;
}
.about-inner {
  position: relative;
  z-index: 2;
}
.about-header {
  text-align: center;
  margin-bottom: 60px;
}
.about-header h2 {
  font-size: 40px;
  font-weight: 500;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.about-header p {
  font-size: 18px;
  font-weight: 400;
  line-height: 2;
  color: var(--white);
  max-width: 700px;
  margin: 0 auto;
}
.about-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 60px;
}
.about-card {
  width: 450px;
  height: 280px;
  border-radius: 20px;
  overflow: hidden;
  flex-shrink: 0;
}
.about-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-arrows {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  min-width: 210px;
}
.about-arrow {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}
.about-arrow-red { color: var(--white); }
.about-arrow-red svg { flex-shrink: 0; }
.about-arrow-gold { color: var(--white); }
.about-arrow-gold svg { flex-shrink: 0; }

/* Section link arrow */
.link-arrow {
  display: flex;
  align-items: center;
  gap: 30px;
  justify-content: center;
  transition: opacity 0.2s;
}
.link-arrow:hover { opacity: 0.8; }
.link-arrow span {
  font-size: 24px;
  font-weight: 500;
}
.link-arrow-circle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 2px solid var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s;
}
.link-arrow-circle svg {
  width: 26px;
  height: 26px;
}
.link-arrow:hover .link-arrow-circle {
  background: rgba(255,255,255,0.1);
}

/* Dark variant */
.link-arrow-dark span { color: var(--dark); }
.link-arrow-dark .link-arrow-circle {
  border-color: var(--red);
}
.link-arrow-dark .link-arrow-circle svg path {
  stroke: var(--red);
}
.link-arrow-dark:hover .link-arrow-circle {
  background: rgba(157, 0, 0, 0.05);
}

/* ===== FEATURES + STEPS SECTION (combined dark bg) ===== */
.features-section {
  padding: 100px 0;
  background: rgba(20, 20, 21, 0.85);
}

/* Features header */
.features-header {
  text-align: center;
  margin-bottom: 50px;
}
.features-header h2 {
  font-size: 40px;
  font-weight: 500;
  margin-bottom: 40px;
  color: var(--white);
}
.features-header p {
  font-size: 18px;
  font-weight: 400;
  color: var(--white);
}

/* Features grid - 3 equal cards */
.features-grid {
  display: flex;
  gap: 30px;
  justify-content: center;
  margin-bottom: 80px;
}
.feature-card {
  width: 380px;
  height: 468px;
  border-radius: 20px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--feature-card-bg);
  border: 1px solid var(--feature-card-stroke);
}
.feature-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features-link {
  margin-bottom: 100px;
}

/* Steps box (white rounded container) */
.steps-box {
  max-width: 1100px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 20px;
  padding: 50px 30px;
}
.steps-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0 0 30px;
  padding: 0;
  font-size: inherit;
  font-weight: inherit;
}
.steps-title-box {
  background: var(--red);
  padding: 6px 10px;
  font-size: 30px;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.steps-title > span:last-child {
  font-size: 30px;
  font-weight: 700;
  color: var(--dark);
}
.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 30px;
}
.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 288px;
}
.step-circle {
  width: 288px;
  height: 288px;
  border-radius: 50%;
  background: var(--gray-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  overflow: hidden;
}
.step-circle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.step-text {
  text-align: center;
}
.step-text h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.step-text p {
  font-size: 16px;
  font-weight: 400;
  color: var(--dark);
  line-height: 1.875;
}
.step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 120px;
  width: 68px;
  flex-shrink: 0;
}
.step-arrow svg {
  width: 30px;
  height: 50px;
}
.steps-cta {
  display: flex;
  justify-content: center;
}
.steps-cta .btn-cta-shadow {
  border-color: var(--dark);
}
.steps-cta .btn-cta {
  border-color: var(--black);
}

/* ===== NEWS SECTION (1920x910, dark bg) ===== */
/*.news {
  padding: 100px 0;
  background: rgba(20, 20, 21, 0.85);
}
.news-header {
  text-align: center;
  margin-bottom: 50px;
}
.news-header h2 {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 20px;
}
.news-header p {
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
}
.news-list {
  max-width: 1000px;
  margin: 0 auto 50px;
  padding: 0 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-item {
  background: var(--white);
  padding: 29px 30px;
  display: flex;
  align-items: center;
  gap: 40px;
  color: var(--dark);
  transition: box-shadow 0.3s;
}
.news-item:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.news-date {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 600;
  color: var(--dark);
}
.news-badge-new {
  background: var(--red);
  color: var(--white);
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
}
.news-badge-cat {
  border: 1px solid var(--dark);
  color: var(--dark);
  font-size: 14px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
}
.news-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--dark);
  flex: 1;
  min-width: 0;
}*/
/* ---------- NEWS ---------- */
  section.news {
    padding: 60px 0 !important;
    height: auto !important;
  }
  section.news .news-inner {
    width: 100% !important;
    max-width: 370px;
    margin: 0 auto;
    padding: 0 10px;
  }
  .news-title { font-size: 28px !important; letter-spacing: 4px !important; }
  .news-sub { font-size: 14px !important; }
  .news-list { gap: 15px; }
  .news-item {
    height: auto !important;
    min-height: 80px;
    flex-wrap: wrap;
    padding: 15px !important;
    gap: 8px !important;
    position: relative;
  }
  .news-date { font-size: 14px !important; width: auto; }
  .news-new { font-size: 10px !important; padding: 2px 6px !important; }
  .news-cat { font-size: 10px !important; padding: 2px 6px !important; }
  .news-body {
    width: 100%;
    flex: none !important;
    font-size: 14px !important;
    white-space: normal !important;
    line-height: 22px !important;
    order: 4;
  }
  .news-arrow {
    width: 40px !important;
    height: 40px !important;
    position: absolute;
    right: 10px;
    top: 10px;
  }

/* ===== FAQ SECTION (1920x1473, bg:#e2e2e2 with pattern) ===== */
.faq {
  background: var(--faq-bg);
  background-image: url(https://renkin.io/images/frame-11703.svg);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}
.faq-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image: url(https://renkin.io/images/frame-11703.svg);
  background-size: 80px 80px;
  z-index: 0;
  pointer-events: none;
}
.faq-header {
  text-align: center;
  margin-bottom: 50px;
  position: relative;
  z-index: 1;
}
.faq-header h2 {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 20px;
}
.faq-header p {
  font-size: 16px;
  font-weight: 500;
  color: #0f1419;
}
.faq-list {
  max-width: 1000px;
  margin: 0 auto 60px;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}
.faq-item {
  border-bottom: 1px dotted var(--dark);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  cursor: pointer;
  min-height: 45px;
  user-select: none;
}
.faq-q {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--dark);
  flex-shrink: 0;
  width: 36px;
}
.faq-question-text {
  font-size: 18px;
  font-weight: 500;
  color: var(--dark);
  flex: 1;
}
.faq-toggle {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  color: var(--dark);
  transition: transform 0.3s;
}
.faq-toggle::before {
  content: '+';
  font-family: var(--font-mincho);
  font-size: 45px;
  font-weight: 300;
  line-height: 1;
}
.faq-item.open .faq-toggle::before {
  content: '\2212';
}
.faq-answer {
  display: none;
  padding: 0 0 20px 52px;
  gap: 16px;
}
.faq-item.open .faq-answer {
  display: flex;
}
.faq-a {
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 700;
  color: var(--dark);
  flex-shrink: 0;
  width: 36px;
}
.faq-answer-text {
  font-size: 16px;
  color: var(--dark);
  line-height: 1.8;
  flex: 1;
}

/* ===== DISCLAIMER (inside FAQ section, corner brackets) ===== */
.disclaimer {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}
.disclaimer-box {
  background: var(--white);
  padding: 40px;
  position: relative;
}
.disclaimer-box::before,
.disclaimer-box::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 60px;
}
.disclaimer-box::before {
  top: -2px;
  left: -2px;
  border-top: 2px solid var(--dark);
  border-left: 2px solid var(--dark);
}
.disclaimer-box::after {
  bottom: -2px;
  right: -2px;
  border-bottom: 2px solid var(--dark);
  border-right: 2px solid var(--dark);
}
.disclaimer-box h3 {
  font-size: 20px;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 20px;
  text-align: center;
}
.disclaimer-text {
  font-size: 14px;
  color: var(--dark);
  line-height: 2;
}
.disclaimer-text p {
  margin-bottom: 8px;
}
.disclaimer-text p:last-child {
  margin-bottom: 0;
}
.disclaimer-text strong {
  font-weight: 700;
}

/* ===== FOOTER (1920x420, bg:#000) ===== */
.footer {
  background: rgba(0, 0, 0, 0.7);
  padding: 60px 0 40px;
}
.footer-top {
  max-width: 1200px;
  margin: 0 auto 40px;
  padding: 0 40px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 80px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}
.footer-logo-renkin {
  width: 162px;
  height: auto;
}
.footer-logo-mirai {
  width: 146px;
  height: auto;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-end;
}
.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--white);
  transition: opacity 0.2s;
}
.footer-link:hover { opacity: 0.7; }
.footer-bottom {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 40px;
  text-align: center;
}
.footer-bottom-line {
  width: 100%;
  height: 1px;
  background: var(--gray-8);
  margin-bottom: 28px;
}
.footer-bottom-nav {
  font-size: 14px;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-sp-br {
  display: none;
}
.footer-copyright {
  font-size: 12px;
  font-weight: 400;
  color: var(--white);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
  .header-row-top, .header-row-bottom { padding-left: 30px; padding-right: 30px; }
  .header-nav { gap: 20px; }
  .header-nav a { font-size: 14px; }
  .features-grid { gap: 20px; }
  .feature-card { width: 340px; height: 420px; }
}

@media (max-width: 1200px) {
  .header-group { gap: 8px; }
  .header-group img { height: 22px; }
  .header-group span { font-size: 11px; }
  .header-nav { gap: 16px; }
  .header-nav a { font-size: 13px; }
  .features-grid { flex-wrap: wrap; }
  .feature-card { width: calc(50% - 15px); height: auto; }
}

@media (max-width: 1200px) {
  .header-row-top { padding-left: 20px; padding-right: 20px; flex-wrap: wrap; }
  .header-row-bottom { display: none; }
  .header-sp-actions { display: flex; }
  .header-group {
    display: flex !important;
    width: 100%;
    order: 3;
    padding: 10px 0 0;
    gap: 10px;
  }
  .header-group span { white-space: normal; font-size: 11px; }
  .hero { padding-top: 120px; min-height: 600px; }
  .hero-content {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    padding: 40px 20px;
  }
  .hero-title-line1 { font-size: 52px; line-height: 1.4; }
  .hero-title-line2 { font-size: 52px; line-height: 1.4; margin-top: -28px; }
  .hero-desc { font-size: 16px; }
  .hero-visual { width: 280px; }
  .hero-tagline { justify-content: center; }
  .btn-cta-wrap { margin: 0 auto 20px; display: block; text-align: center; }
  .btn-cta-wrap .btn-cta { margin: 0 auto; }
  .btn-cta-wrap .btn-cta-shadow { margin: 0 auto; left: 50%; transform: translateX(calc(-50% + 8px)); }
  .hero-login { justify-content: center; }
  .hero-rates { padding: 0 20px; }
  .rates-coins { flex-wrap: wrap; gap: 8px; }
  .rates-coin { flex: 0 0 auto; padding: 8px 12px; }
  .rates-coin::after { display: none !important; }
  .rates-bottom { height: auto; flex-wrap: wrap; padding: 12px; }
  .banner-section { padding: 40px 20px; }
  .about-flow { flex-direction: column; gap: 20px; }
  .about-arrows { flex-direction: row; min-width: 0; padding: 0; }
  .about-card { width: 100%; max-width: 400px; height: auto; }
  .about-coin-left, .about-coin-right { display: none; }
  .features-grid { flex-direction: column; align-items: center; }
  .feature-card { width: 100%; max-width: 380px; height: auto; }
  .steps-box { margin: 0 20px; padding: 40px 20px; }
  .steps-grid { flex-direction: column; align-items: center; gap: 20px; }
  .step-arrow { padding: 0; transform: rotate(90deg); width: auto; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-top { flex-direction: column; align-items: center; gap: 30px; }
  .footer-links { align-items: flex-end; align-self: stretch; }
  .footer-sp-br { display: block; }
  .footer-nav-sep { display: none; }
  .container, .container-narrow { padding: 0 20px; }
}

@media (max-width: 1200px) {
  .hero-title-line1 { font-size: 36px; line-height: 1.3; }
  .hero-title-line2 { font-size: 36px; line-height: 1.3; margin-top: -14px; }
  .hero-desc { font-size: 15px; }
  .btn-cta { width: 260px; height: 48px; font-size: 18px; }
  .btn-cta-shadow { width: 260px; height: 48px; }
  .about-header h2,
  .features-header h2,
  .news-header h2,
  .faq-header h2 { font-size: 28px; }
  .step-circle { width: 220px; height: 220px; }
  .step-item { width: 220px; }
  .link-arrow span { font-size: 18px; }
  .link-arrow-circle { width: 48px; height: 48px; }
  .link-arrow-circle svg { width: 20px; height: 20px; }
  .about-header p,
  .features-header p { font-size: 15px; }
  .footer-bottom-nav { font-size: 12px; }
  .news-date { font-size: 16px; }
  .disclaimer-box { padding: 30px 20px; }
  .disclaimer-box::before,
  .disclaimer-box::after { width: 40px; height: 40px; }
  .steps-title-box { font-size: 24px; }
  .steps-title > span:last-child { font-size: 24px; }
}

/* ===== MOBILE MENU OVERLAY ===== */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: #11161a;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  overflow-y: auto;
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 0;
}
.mobile-menu-logo img {
  height: 36px;
  width: auto;
}
.mobile-menu-close {
  width: 40px;
  height: 40px;
  background: var(--white);
  border-radius: 10px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mobile-menu-close svg {
  width: 16px;
  height: 16px;
  stroke: #0f1419;
  stroke-width: 2;
}
.mobile-menu-group {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px 0;
}
.mobile-menu-group img {
  height: 22px;
  width: auto;
}
.mobile-menu-group span {
  font-size: 11px;
  color: var(--white);
  line-height: 1.7;
}
.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 50px;
  padding: 80px 20px 60px;
}
.mobile-menu-nav a {
  font-size: 16px;
  font-weight: 500;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.1em;
  text-align: center;
}
.mobile-menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding: 0 20px;
  /*margin-top: auto;*/
}
.mobile-menu-btn-login {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  background: var(--white);
  color: #0f1419;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
}
.mobile-menu-btn-contact {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
  background: #262d34;
  border: 1px solid var(--white);
  color: var(--white);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
}
.mobile-menu-close-text {
  text-align: center;
  padding: 40px 20px;
  color: var(--white);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
}