/* =========================================================
   GRANBYTE — 大きな安心を、1バイトから。
   ========================================================= */

:root {
  /* ブランドカラー（ロゴと共通） */
  --night: #0A1226;
  --navy-900: #0F1E3D;
  --navy-700: #1F3A6E;
  --navy-500: #3A5A94;
  --cyan: #19B5D6;
  --cyan-600: #1494B0;
  --cyan-700: #10768B;
  --face-top: #6E8FD0;
  --face-right: #4467A8;
  --face-left: #2A477F;

  /* テキスト・面 */
  --ink: #0F1E3D;
  --slate: #3D4A63;
  --muted: #5B6680;
  --line: #E1E7F0;
  --soft: #F3F6FB;
  --white: #FFFFFF;
  --on-dark: #DCE4F2;
  --on-dark-muted: #8FA3C8;

  --font-en: "Nunito", "M PLUS Rounded 1c", sans-serif;
  --font-head: "M PLUS Rounded 1c", "Hiragino Maru Gothic ProN", sans-serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 1px 2px rgba(15, 30, 61, .06), 0 8px 24px rgba(15, 30, 61, .08);
  --shadow-lg: 0 2px 4px rgba(15, 30, 61, .06), 0 24px 48px rgba(15, 30, 61, .14);
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .02em;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-family: var(--font-head); line-height: 1.4; letter-spacing: .03em; word-break: auto-phrase; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }

.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.container--narrow { width: min(820px, 100% - 32px); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -48px; z-index: 100; background: var(--navy-900); color: #fff; padding: 8px 16px; border-radius: 8px; }
.skip:focus { top: 12px; }
.center { text-align: center; }
.sp { display: none; }
@media (max-width: 720px) { .pc { display: none; } .sp { display: inline; } }

:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  min-height: 44px; padding: 0 22px;
  border: 1.5px solid transparent; border-radius: 999px;
  font-family: var(--font-head); font-weight: 700; font-size: 15px; letter-spacing: .05em;
  text-decoration: none; white-space: nowrap; cursor: pointer;
  transition: background-color .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
}
.btn--lg { min-height: 56px; padding: 0 32px; font-size: 16px; }
.btn--primary { background: var(--cyan); color: var(--night); box-shadow: 0 6px 20px rgba(25, 181, 214, .35); }
.btn--primary:hover { background: #3FC7E3; transform: translateY(-1px); box-shadow: 0 10px 28px rgba(25, 181, 214, .45); }
.btn--ghost { color: var(--navy-900); border-color: var(--line); background: var(--white); }
.btn--ghost:hover { border-color: var(--navy-500); }
.btn--outline-light { color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn--outline-light:hover { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .7); }

/* ---------- ヘッダー ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.header.is-scrolled { border-color: var(--line); box-shadow: 0 4px 20px rgba(15, 30, 61, .06); }
.header__inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.header__logo { flex: none; margin-left: -10px; }
.header__logo img { height: 46px; width: auto; }
.nav { margin-left: auto; display: flex; align-items: center; gap: 28px; }
.nav__list { display: flex; gap: 26px; }
.nav__list a {
  position: relative; text-decoration: none; font-family: var(--font-head); font-weight: 700; font-size: 14.5px; color: var(--slate);
}
.nav__list a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px;
  background: var(--cyan); transform: scaleX(0); transition: transform .2s;
}
.nav__list a:hover { color: var(--ink); }
.nav__list a:hover::after { transform: scaleX(1); }
.nav__cta { display: flex; gap: 10px; }
.nav-toggle { display: none; }

@media (max-width: 1080px) {
  .nav-toggle {
    display: grid; place-content: center; gap: 5px;
    width: 44px; height: 44px; margin-left: auto; padding: 0;
    border: 0; border-radius: 10px; background: transparent; cursor: pointer;
  }
  .nav-toggle span { display: block; width: 22px; height: 2px; border-radius: 2px; background: var(--navy-900); transition: transform .25s, opacity .25s; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 20px;
    padding: 20px 16px 28px;
    background: var(--white); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: transform .25s, opacity .25s, visibility .25s;
  }
  .nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__list { flex-direction: column; gap: 0; }
  .nav__list a { display: block; padding: 14px 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav__list a::after { display: none; }
  .nav__cta .btn { flex: 1; min-height: 50px; }
}

/* ---------- セクション共通 ---------- */
.section { padding: 112px 0; }
.section--soft { background: var(--soft); }
.section--dark { background: var(--night); color: var(--on-dark); position: relative; overflow: hidden; }
.section__head { text-align: center; margin-bottom: 56px; }
.section__eyebrow {
  font-family: var(--font-en); font-weight: 800; font-size: 13px; letter-spacing: .24em;
  color: var(--cyan-600); margin-bottom: 14px;
}
.section--dark .section__eyebrow { color: var(--cyan); }
.section__title { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; color: var(--navy-900); }
.section--dark .section__title { color: #fff; }
.section__lead { margin-top: 18px; color: var(--muted); }
.section--dark .section__lead { color: var(--on-dark-muted); }
.note { margin-top: 18px; font-size: 13px; color: var(--muted); }
@media (max-width: 720px) {
  .section { padding: 80px 0; }
  .section__head { margin-bottom: 40px; }
}

/* スクロールで表示 */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--night); color: var(--on-dark);
  padding: 96px 0 120px;
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 70% at 78% 45%, rgba(25, 181, 214, .22), transparent 70%),
    radial-gradient(50% 60% at 10% 100%, rgba(58, 90, 148, .35), transparent 70%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(150deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 44px);
  mask-image: linear-gradient(to bottom, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, #000 70%, transparent);
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: 40px; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px; border: 1px solid rgba(25, 181, 214, .4); border-radius: 999px;
  background: rgba(25, 181, 214, .08);
  font-family: var(--font-head); font-weight: 700; font-size: 13.5px; color: #BDEFFA;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 4px rgba(25, 181, 214, .25); animation: blink 2.4s infinite; }
@keyframes blink { 50% { box-shadow: 0 0 0 8px rgba(25, 181, 214, 0); } }
.hero__title {
  margin-top: 26px;
  font-size: clamp(40px, 6vw, 72px); font-weight: 800; line-height: 1.22; color: #fff; letter-spacing: .04em;
}
.hero__accent {
  background: linear-gradient(90deg, #19B5D6, #7FE0F2);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { margin-top: 26px; font-size: 17px; color: var(--on-dark); max-width: 34em; }
.hero__actions { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero__stats {
  margin-top: 48px; display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 0;
  border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 24px;
}
.hero__stats li { padding: 0 26px; border-left: 1px solid rgba(255, 255, 255, .12); }
.hero__stats li:first-child { padding-left: 0; border-left: 0; }
.hero__stats b { display: block; font-family: var(--font-en); font-weight: 800; font-size: 26px; color: #fff; line-height: 1.2; }
.hero__stats small { font-family: var(--font-head); font-size: 13px; margin-left: 2px; }
.hero__stats span { font-size: 12.5px; color: var(--on-dark-muted); }
.hero__visual { position: relative; }
.cube-field { width: 100%; height: auto; overflow: visible; }
.cube-field .led { transition: fill .6s ease; }
.cube-float { animation: float 6s ease-in-out infinite; }
.cube-glow { animation: glow 6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes float { 50% { transform: translateY(-10px); } }
@keyframes glow { 50% { transform: scale(.86); opacity: .7; } }
.hero__en {
  position: absolute; right: 24px; bottom: 22px;
  font-family: var(--font-en); font-weight: 300; font-size: 13px; letter-spacing: .3em; color: rgba(220, 228, 242, .45);
}
@media (max-width: 960px) {
  .hero { padding: 64px 0 96px; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; width: min(420px, 82%); margin: 0 auto -8px; }
}
@media (max-width: 560px) {
  .hero__stats { grid-template-columns: repeat(2, 1fr); row-gap: 20px; }
  .hero__stats li:nth-child(3) { padding-left: 0; border-left: 0; }
  .hero__actions .btn { flex: 1 1 100%; }
  .hero__en { left: 16px; right: auto; }
}

/* ---------- コンセプト ---------- */
.concept__inner { display: grid; grid-template-columns: 300px 1fr; gap: 72px; align-items: center; }
.concept__mark {
  position: relative; display: grid; place-items: center; aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, #EAF8FC, var(--soft) 65%);
}
.concept__mark img { width: 62%; }
.concept__body p:not(.section__eyebrow) { margin-top: 18px; color: var(--slate); }
.concept__body .section__title { font-size: clamp(24px, 3vw, 34px); }
@media (max-width: 860px) {
  .concept__inner { grid-template-columns: 1fr; gap: 32px; }
  .concept__mark { width: 220px; margin: 0 auto; }
}

/* ---------- 特長 ---------- */
.features__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature {
  position: relative; padding: 32px 26px 30px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature__icon {
  width: 56px; height: 56px; padding: 12px; border-radius: 16px;
  background: linear-gradient(140deg, var(--navy-700), var(--navy-900)); color: var(--cyan);
}
.feature__num { position: absolute; top: 26px; right: 26px; font-family: var(--font-en); font-weight: 900; font-size: 15px; color: #C9D3E3; }
.feature__title { margin-top: 22px; font-size: 19px; font-weight: 800; color: var(--navy-900); }
.feature p:last-child { margin-top: 12px; font-size: 14.5px; line-height: 1.85; color: var(--slate); }
@media (max-width: 1000px) { .features__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features__grid { grid-template-columns: 1fr; } }

/* ---------- 料金 ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan {
  position: relative; padding: 32px 30px 30px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg);
  transition: transform .25s, box-shadow .25s;
}
.plan:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.plan__name { font-family: var(--font-en); font-weight: 900; font-size: 34px; color: var(--navy-900); letter-spacing: .02em; }
.plan__name span { font-family: var(--font-head); font-weight: 700; font-size: 15px; margin-left: 6px; color: var(--muted); }
.plan__price {
  margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line);
  font-family: var(--font-en); font-weight: 800; font-size: 44px; line-height: 1.1; color: var(--navy-900);
}
.plan__yen { font-size: 24px; margin-right: 2px; }
.plan__per { font-family: var(--font-head); font-weight: 700; font-size: 15px; color: var(--muted); margin-left: 4px; }
.plan__tax { margin-top: 6px; font-size: 13px; color: var(--muted); }
.plan__fit { margin-top: 16px; font-size: 14px; color: var(--slate); }
.plan--featured {
  color: var(--on-dark);
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(25, 181, 214, .28), transparent 70%),
    linear-gradient(160deg, var(--navy-700), var(--night));
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}
.plan--featured .plan__name, .plan--featured .plan__price { color: #fff; }
.plan--featured .plan__name span, .plan--featured .plan__per, .plan--featured .plan__tax { color: var(--on-dark-muted); }
.plan--featured .plan__fit { color: var(--on-dark); }
.plan--featured .plan__price { border-color: rgba(255, 255, 255, .16); }
.plan__badge {
  position: absolute; top: 30px; right: 26px;
  padding: 3px 12px; border-radius: 999px; background: var(--cyan); color: var(--night);
  font-family: var(--font-head); font-weight: 800; font-size: 12.5px;
}
.included {
  margin-top: 40px; padding: 36px 40px;
  border-radius: var(--radius-lg); background: var(--soft);
}
.included__title { font-size: 18px; font-weight: 800; color: var(--navy-900); }
.included__list { margin-top: 20px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px 24px; }
.included__list li { position: relative; padding-left: 26px; font-size: 14.5px; font-weight: 500; }
.included__list li::before {
  content: ""; position: absolute; left: 0; top: .42em; width: 16px; height: 16px; border-radius: 50%;
  background: var(--cyan) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='m4.5 8.2 2.3 2.3 4.7-5' fill='none' stroke='%230A1226' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 100% no-repeat;
}
@media (max-width: 1000px) {
  .plans { grid-template-columns: repeat(2, 1fr); }
  .included__list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .plans { grid-template-columns: 1fr; }
  .included { padding: 28px 22px; }
  .included__list { grid-template-columns: 1fr; }
}

/* ---------- ドメイン ---------- */
.domain__inner {
  display: grid; grid-template-columns: 1fr 1.1fr; column-gap: 64px; row-gap: 32px; align-items: start;
  grid-template-areas: "intro table" "search table";
}
.domain__intro { grid-area: intro; }
.domain-search { grid-area: search; }
.domain__table-wrap { grid-area: table; }
.domain__intro p:not(.section__eyebrow) { margin-top: 20px; color: var(--slate); }
.domain__table-wrap { background: var(--white); border-radius: var(--radius-lg); padding: 12px 28px 24px; box-shadow: var(--shadow); }
.domain__table { width: 100%; border-collapse: collapse; }
.domain__table th, .domain__table td { padding: 16px 8px; text-align: left; border-bottom: 1px solid var(--line); }
.domain__table thead th { font-size: 13px; font-weight: 500; color: var(--muted); }
.domain__table tbody th { font-family: var(--font-en); font-weight: 800; font-size: 20px; color: var(--navy-900); }
.domain__table td { color: var(--slate); font-size: 14px; }
.domain__table td b { font-family: var(--font-en); font-weight: 800; font-size: 24px; color: var(--navy-900); margin-right: 2px; }
.domain__table tbody tr:last-child > * { border-bottom: 0; }
@media (max-width: 860px) { .domain__inner { grid-template-columns: 1fr; grid-template-areas: "intro" "search" "table"; } }

/* ドメイン検索 */
.domain-search__label { display: block; margin-bottom: 10px; font-family: var(--font-head); font-weight: 800; color: var(--navy-900); }
.domain-search__box {
  display: flex; gap: 8px; padding: 6px; border-radius: 999px;
  background: var(--white); box-shadow: var(--shadow); border: 1.5px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.domain-search__box:focus-within { border-color: var(--cyan-600); box-shadow: 0 0 0 4px rgba(25, 181, 214, .18), var(--shadow); }
.domain-search__box input {
  flex: 1; min-width: 0; padding: 0 18px; border: 0; background: transparent;
  font-family: var(--font-en); font-weight: 600; font-size: 18px; color: var(--ink);
}
.domain-search__box input:focus { outline: 0; }
.domain-search__box .btn { flex: none; min-height: 48px; padding: 0 28px; }
.domain-search__hint { margin-top: 10px; font-size: 13px; color: var(--muted); }
.domain-search__status { margin-top: 16px; font-size: 14px; color: var(--slate); }
.domain-search__status:empty { display: none; }
.domain-search__status.is-error { color: #B42318; }
.domain-search__results { display: grid; gap: 8px; margin-top: 12px; }
.domain-result {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 6px 16px;
  padding: 14px 18px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--line);
}
.domain-result.is-available { border-color: rgba(20, 148, 176, .45); }
.domain-result__name { font-family: var(--font-en); font-weight: 800; font-size: 17px; color: var(--navy-900); word-break: break-all; }
.domain-result__meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.domain-result .btn { grid-row: span 2; min-height: 40px; padding: 0 18px; font-size: 14px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-family: var(--font-head); font-weight: 700; font-size: 12px; }
.badge--available { background: #E3F6FA; color: var(--cyan-700); }
.badge--taken { background: #EEF1F6; color: var(--muted); }
.badge--unknown { background: #FFF4E5; color: #9A5B00; }
@media (max-width: 480px) {
  .domain-search__box input { font-size: 16px; padding: 0 12px; }
  .domain-search__box .btn { padding: 0 20px; }
  .domain-result { grid-template-columns: 1fr; }
  .domain-result .btn { grid-row: auto; justify-self: start; order: 3; }
}
@media (max-width: 480px) { .domain__table-wrap { padding: 8px 16px 20px; } }

/* ---------- 機能一覧（タブ） ---------- */
.tabs__list {
  display: flex; gap: 6px; padding: 6px; margin: 0 auto 28px; width: fit-content; max-width: 100%;
  background: var(--soft); border-radius: 999px; overflow-x: auto; scrollbar-width: none;
}
.tabs__list::-webkit-scrollbar { display: none; }
.tabs__tab {
  flex: none; min-height: 44px; padding: 0 22px; border: 0; border-radius: 999px; background: transparent;
  font-family: var(--font-head); font-weight: 700; font-size: 14.5px; color: var(--muted); cursor: pointer;
  transition: background-color .2s, color .2s;
}
.tabs__tab:hover { color: var(--ink); }
.tabs__tab[aria-selected="true"] { background: var(--navy-900); color: #fff; }
.tabs__panel { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 12px 36px; }
.tabs__panel[hidden] { display: none; }
.spec > div { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.spec > div:last-child { border-bottom: 0; }
.spec dt { font-family: var(--font-head); font-weight: 700; color: var(--navy-900); }
.spec dd { margin: 0; color: var(--slate); font-size: 15px; }
.spec small { display: block; margin-top: 4px; font-size: 12.5px; color: var(--muted); }
.fn-list { display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 48px; }
.fn-list li { display: flex; justify-content: space-between; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.fn-list b { font-family: var(--font-head); font-weight: 700; color: var(--navy-900); }
.fn-list span { color: var(--slate); font-size: 14.5px; text-align: right; }
@media (max-width: 760px) {
  .tabs__list { border-radius: 14px; width: 100%; }
  .tabs__panel { padding: 4px 20px; }
  .spec > div { grid-template-columns: 1fr; gap: 4px; }
  .fn-list { grid-template-columns: 1fr; }
  .fn-list li { flex-direction: column; gap: 2px; }
  .fn-list span { text-align: left; }
}

/* ---------- インフラ ---------- */
.infra__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(50% 60% at 50% 0%, rgba(25, 181, 214, .18), transparent 70%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(150deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px);
}
.infra .container { position: relative; }
.infra__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255, 255, 255, .1); border-radius: var(--radius-lg); overflow: hidden; }
.infra__item { padding: 34px 28px; background: rgba(10, 18, 38, .92); }
.infra__label { font-family: var(--font-en); font-weight: 800; font-size: 12px; letter-spacing: .24em; color: var(--cyan); }
.infra__item h3 { margin-top: 14px; font-size: 19px; color: #fff; }
.infra__item p:last-child { margin-top: 12px; font-size: 14.5px; color: var(--on-dark-muted); }
.infra__stack { margin-top: 36px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.infra__stack li {
  padding: 8px 16px; border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px;
  font-family: var(--font-en); font-weight: 600; font-size: 14px; color: var(--on-dark);
}
@media (max-width: 1000px) { .infra__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .infra__grid { grid-template-columns: 1fr; } }

/* ---------- 移行案内 ---------- */
.migrate { padding: 88px 0; }
.migrate__card {
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  padding: 44px 48px; border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(120deg, #F2FBFD, var(--white) 60%);
}
.migrate__title { font-size: clamp(20px, 2.4vw, 26px); font-weight: 800; color: var(--navy-900); }
.migrate__card p:not(.section__eyebrow) { margin-top: 14px; color: var(--slate); max-width: 46em; }
@media (max-width: 860px) {
  .migrate__card { flex-direction: column; align-items: flex-start; padding: 32px 24px; }
}

/* ---------- 流れ ---------- */
.flow__steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.flow__steps li {
  position: relative; padding: 32px 24px 28px; text-align: center;
  background: var(--white); border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.flow__steps li:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; right: -15px; z-index: 1; width: 10px; height: 10px;
  border-top: 2.5px solid var(--cyan); border-right: 2.5px solid var(--cyan); transform: translateY(-50%) rotate(45deg);
}
.flow__num {
  display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto;
  border-radius: 50%; background: var(--navy-900); color: var(--cyan);
  font-family: var(--font-en); font-weight: 900; font-size: 20px;
}
.flow__steps h3 { margin-top: 18px; font-size: 17px; color: var(--navy-900); }
.flow__steps p { margin-top: 8px; font-size: 14px; color: var(--slate); }
@media (max-width: 900px) {
  .flow__steps { grid-template-columns: repeat(2, 1fr); }
  .flow__steps li::after { display: none; }
}
@media (max-width: 520px) { .flow__steps { grid-template-columns: 1fr; } }

.flow__cta { margin-top: 40px; text-align: center; }

/* ---------- FAQ ---------- */
.faq__list { display: grid; gap: 12px; }
.faq__item { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); transition: box-shadow .2s, border-color .2s; }
.faq__item[open] { border-color: transparent; box-shadow: var(--shadow); }
.faq__item summary {
  position: relative; display: block; padding: 20px 60px 20px 56px; cursor: pointer; list-style: none;
  font-family: var(--font-head); font-weight: 700; color: var(--navy-900);
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before {
  content: "Q"; position: absolute; left: 20px; top: 18px;
  font-family: var(--font-en); font-weight: 900; font-size: 20px; color: var(--cyan-600);
}
.faq__item summary::after {
  content: ""; position: absolute; right: 24px; top: 50%; width: 10px; height: 10px; margin-top: -7px;
  border-right: 2px solid var(--navy-500); border-bottom: 2px solid var(--navy-500); transform: rotate(45deg); transition: transform .25s;
}
.faq__item[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq__item p { padding: 0 24px 22px 56px; color: var(--slate); font-size: 15px; }

/* ---------- リモートサポートバナー ---------- */
.support-section { padding: 0 0 112px; }
.support-banner {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px 36px;
  padding: 36px 40px; border-radius: var(--radius-lg); color: var(--on-dark);
  background:
    radial-gradient(60% 120% at 100% 0%, rgba(25, 181, 214, .22), transparent 65%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, .035) 0 1px, transparent 1px 36px),
    repeating-linear-gradient(150deg, rgba(255, 255, 255, .035) 0 1px, transparent 1px 36px),
    linear-gradient(150deg, var(--navy-700), var(--night));
  box-shadow: var(--shadow-lg);
}
.support-banner__icon {
  display: grid; place-items: center; width: 88px; height: 88px; padding: 18px;
  border-radius: 24px; background: rgba(25, 181, 214, .12); border: 1px solid rgba(25, 181, 214, .35); color: var(--cyan);
}
.support-banner__eyebrow { font-family: var(--font-en); font-weight: 800; font-size: 12px; letter-spacing: .24em; color: var(--cyan); }
.support-banner__title { margin-top: 6px; font-size: clamp(20px, 2.4vw, 25px); font-weight: 800; color: #fff; }
.support-banner__lead { margin-top: 10px; font-size: 14.5px; color: var(--on-dark); }
.support-banner__steps { margin-top: 14px; display: grid; gap: 6px; counter-reset: rs; }
.support-banner__steps li { position: relative; padding-left: 32px; font-size: 14px; color: var(--on-dark); }
.support-banner__steps li::before {
  counter-increment: rs; content: counter(rs);
  position: absolute; left: 0; top: 2px; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  background: var(--cyan); color: var(--night); font-family: var(--font-en); font-weight: 900; font-size: 12px;
}
.support-banner__action { display: grid; justify-items: center; gap: 10px; text-align: center; }
.support-banner__note { font-size: 12px; line-height: 1.7; color: var(--on-dark-muted); }
.support-banner .btn::after {
  content: ""; width: 14px; height: 14px; flex: none;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v8m-3.5-3.5L8 10l3.5-3.5M3 13h10' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 2v8m-3.5-3.5L8 10l3.5-3.5M3 13h10' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.page .support-banner { margin-bottom: 48px; }
.page .support-banner + .form, .callout + .support-banner { margin-top: 0; }
@media (max-width: 960px) {
  .support-banner { grid-template-columns: auto 1fr; }
  .support-banner__action { grid-column: 1 / -1; justify-items: start; text-align: left; }
}
@media (max-width: 600px) {
  .support-section { padding-bottom: 80px; }
  .support-banner { grid-template-columns: 1fr; padding: 28px 22px; }
  .support-banner__icon { width: 64px; height: 64px; padding: 12px; border-radius: 18px; }
  .support-banner__action { justify-items: stretch; }
}

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; padding: 120px 0; background: var(--night); color: var(--on-dark); text-align: center; }
.cta__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(50% 70% at 50% 100%, rgba(25, 181, 214, .25), transparent 70%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(150deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px);
}
.cta__inner { position: relative; }
.cta__mark { width: 84px; margin: 0 auto 28px; }
.cta__title { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; color: #fff; }
.cta__lead { margin-top: 18px; color: var(--on-dark); }
.cta__actions { margin-top: 36px; display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
@media (max-width: 520px) { .cta__actions .btn { flex: 1 1 100%; } }

/* ---------- フッター ---------- */
.footer { background: #070D1C; color: var(--on-dark-muted); padding: 72px 0 32px; font-size: 14px; }
.footer__inner { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.footer__brand img { height: 46px; width: auto; margin-left: -10px; }
.footer__brand p { margin-top: 10px; font-family: var(--font-head); color: var(--on-dark); }
.footer__nav { display: flex; gap: 64px; flex-wrap: wrap; }
.footer__head { font-family: var(--font-head); font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer__nav li + li { margin-top: 8px; }
.footer__nav a { text-decoration: none; }
.footer__nav a:hover { color: #fff; }
.footer__bottom { margin-top: 56px; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, .08); font-size: 12px; }
.footer__tm { line-height: 1.8; }
.footer__copy { margin-top: 10px; }
@media (max-width: 600px) { .footer__nav { gap: 32px; } }

/* =========================================================
   下層ページ
   ========================================================= */
.page-hero { position: relative; overflow: hidden; padding: 72px 0 64px; background: var(--night); color: var(--on-dark); }
.page-hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(50% 90% at 85% 50%, rgba(25, 181, 214, .2), transparent 70%),
    repeating-linear-gradient(30deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(150deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 44px);
}
.page-hero .container { position: relative; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--on-dark-muted); }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; opacity: .5; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: #fff; }
.page-hero__eyebrow { margin-top: 28px; font-family: var(--font-en); font-weight: 800; font-size: 13px; letter-spacing: .24em; color: var(--cyan); }
.page-hero__title { margin-top: 10px; font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: #fff; }
.page-hero__lead { margin-top: 14px; max-width: 46em; color: var(--on-dark); }
.page { padding: 80px 0 112px; }
@media (max-width: 720px) { .page-hero { padding: 48px 0 44px; } .page { padding: 56px 0 80px; } }

.page-subtitle { margin: 64px 0 24px; font-size: 24px; font-weight: 800; color: var(--navy-900); }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }

/* 空きドメイン検索ページ */
.domain-search__form--hero { margin-top: 32px; max-width: 640px; }
.domain-search__form--hero .domain-search__box { box-shadow: 0 12px 32px rgba(0, 0, 0, .3); }
.ds-step + .ds-step { margin-top: 56px; }
.ds-step__title { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 800; color: var(--navy-900); }
.ds-step__num {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  background: var(--navy-900); color: var(--cyan); font-family: var(--font-en); font-weight: 900; font-size: 17px;
}
.domain-result.is-selected { border-color: var(--cyan-600); background: #F0FAFD; box-shadow: 0 0 0 3px rgba(25, 181, 214, .15); }
.ds-selected { margin-top: 14px; color: var(--slate); }
.ds-selected b { font-family: var(--font-en); font-weight: 800; font-size: 18px; color: var(--navy-900); }
.ds-plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.ds-plan {
  display: grid; gap: 10px; padding: 20px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: var(--white);
}
.ds-plan--featured { border-color: var(--cyan-600); box-shadow: 0 0 0 3px rgba(25, 181, 214, .12); }
.ds-plan__name { font-family: var(--font-en); font-weight: 900; font-size: 24px; color: var(--navy-900); }
.ds-plan__name small { margin-left: 4px; font-family: var(--font-head); font-weight: 700; font-size: 13px; color: var(--muted); }
.ds-plan__name em {
  margin-left: 8px; padding: 2px 8px; border-radius: 999px; background: var(--cyan); color: var(--night);
  font-family: var(--font-head); font-style: normal; font-weight: 800; font-size: 11px; vertical-align: middle;
}
.ds-plan__total { font-size: 13px; color: var(--muted); }
.ds-plan__total b { font-family: var(--font-en); font-weight: 800; font-size: 26px; color: var(--navy-900); }
.ds-plan__total small { display: block; }
.ds-plan .btn { width: 100%; }
@media (max-width: 760px) { .ds-plans { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) {
  .ds-plan { padding: 16px 14px; }
  .ds-plan__name { font-size: 20px; }
  .ds-plan__total b { font-size: 22px; }
}
@media (max-width: 340px) { .ds-plans { grid-template-columns: 1fr; } }

/* 定義リスト型の表 */
.deflist { border-top: 1px solid var(--line); }
.deflist > div { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 20px 4px; border-bottom: 1px solid var(--line); }
.deflist dt { font-family: var(--font-head); font-weight: 700; color: var(--navy-900); }
.deflist dd { margin: 0; color: var(--slate); }
.deflist dd p + p, .deflist dd ul { margin-top: 6px; }
.deflist dd ul li { position: relative; padding-left: 1.1em; }
.deflist dd ul li::before { content: "・"; position: absolute; left: 0; }
@media (max-width: 720px) { .deflist > div { grid-template-columns: 1fr; gap: 4px; } }

/* 規約・方針の本文 */
.prose { color: var(--slate); }
.prose > * + * { margin-top: 16px; }
.prose h2 {
  margin-top: 56px; padding-bottom: 10px; border-bottom: 2px solid var(--line);
  font-size: 21px; font-weight: 800; color: var(--navy-900);
}
.prose h3 { margin-top: 32px; font-size: 17px; color: var(--navy-900); }
.prose h2:first-child { margin-top: 0; }
.prose ol, .prose ul { padding-left: 1.6em; }
.prose ol { list-style: decimal; }
.prose ol ol { list-style: lower-roman; margin-top: 6px; }
.prose ul { list-style: disc; }
.prose li + li { margin-top: 6px; }
.prose a { color: var(--cyan-700); }
.prose .meta { font-size: 14px; color: var(--muted); }
.prose .sign { margin-top: 48px; text-align: right; }

/* 注意書き */
.callout {
  padding: 20px 24px; border-radius: var(--radius);
  background: #EEF9FC; border-left: 4px solid var(--cyan); color: var(--slate); font-size: 15px;
}
.callout b { color: var(--navy-900); }

/* 移行の手順 */
.steps { display: grid; gap: 16px; counter-reset: s; }
.steps li {
  position: relative; display: grid; grid-template-columns: 56px 1fr; gap: 20px; align-items: start;
  padding: 24px 28px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--white);
}
.steps li::before {
  counter-increment: s; content: counter(s);
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  background: var(--navy-900); color: var(--cyan); font-family: var(--font-en); font-weight: 900; font-size: 20px;
}
.steps h3 { font-size: 17px; color: var(--navy-900); }
.steps p { margin-top: 6px; color: var(--slate); font-size: 15px; }
@media (max-width: 560px) { .steps li { grid-template-columns: 1fr; gap: 12px; padding: 22px; } }

/* フォーム */
.form { display: grid; gap: 28px; }
.form fieldset { margin: 0; padding: 0; border: 0; display: grid; gap: 22px; }
.form legend {
  width: 100%; margin-bottom: 4px; padding-bottom: 10px; border-bottom: 2px solid var(--line);
  font-family: var(--font-head); font-weight: 800; font-size: 19px; color: var(--navy-900);
}
.field { display: grid; gap: 8px; }
.field__label { display: flex; align-items: center; gap: 8px; font-family: var(--font-head); font-weight: 700; color: var(--navy-900); }
.req, .opt { padding: 1px 8px; border-radius: 4px; font-size: 11.5px; font-weight: 700; }
.req { background: var(--navy-900); color: #fff; }
.opt { background: var(--soft); color: var(--muted); }
.field__hint { font-size: 13px; color: var(--muted); }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field select, .field textarea {
  width: 100%; min-height: 50px; padding: 12px 14px;
  border: 1.5px solid #CBD4E3; border-radius: 10px; background: var(--white);
  font: inherit; color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { min-height: 180px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--cyan-600); box-shadow: 0 0 0 4px rgba(25, 181, 214, .18); }
.field input:user-invalid, .field select:user-invalid, .field textarea:user-invalid { border-color: #D64545; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field-row--domain-check { grid-template-columns: 1fr 140px auto; }
.field-row--domain-check .btn { min-height: 50px; }
@media (max-width: 600px) { .field-row--domain-check { grid-template-columns: 1fr 120px; } .field-row--domain-check .btn { grid-column: 1 / -1; } }
.domain-check { font-size: 14px; font-weight: 500; }
.domain-check:empty { display: none; }
.domain-check.is-available { color: var(--cyan-700); }
.domain-check.is-taken { color: #B42318; }
.domain-check.is-unknown { color: #9A5B00; }
@media (max-width: 600px) { .field-row { grid-template-columns: 1fr; } }
.choices { display: grid; gap: 10px; }
.choices--cols { grid-template-columns: repeat(3, 1fr); }
.choices--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 760px) { .choices--cols { grid-template-columns: repeat(2, 1fr); } }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; }
.choice span {
  display: block; padding: 14px 16px 14px 46px; border: 1.5px solid #CBD4E3; border-radius: 12px; cursor: pointer;
  transition: border-color .2s, background-color .2s;
}
.choice span::before {
  content: ""; position: absolute; left: 16px; top: 50%; width: 18px; height: 18px; margin-top: -9px;
  border: 2px solid #9AA8C0; border-radius: 50%; background: var(--white);
}
.choice input[type="checkbox"] + span::before { border-radius: 5px; }
.choice input:checked + span { border-color: var(--cyan-600); background: #F0FAFD; }
.choice input:checked + span::before { border-color: var(--cyan-600); background: var(--cyan-600); box-shadow: inset 0 0 0 3px var(--white); }
.choice input[type="checkbox"]:checked + span::before {
  box-shadow: none;
  background: var(--cyan-600) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='m4 8.2 2.6 2.6L12 5.4' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 100% no-repeat;
}
.choice input:focus-visible + span { outline: 3px solid var(--cyan); outline-offset: 2px; }
.choice b { display: block; font-family: var(--font-en); font-weight: 800; color: var(--navy-900); }
.choice small { color: var(--muted); font-size: 13px; }
.form__agree { padding: 20px 24px; border-radius: var(--radius); background: var(--soft); }
.form__agree a { color: var(--cyan-700); }
.form__submit { display: flex; justify-content: center; }
.form__submit .btn { min-width: 280px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.is-hidden { display: none !important; }
.form-summary {
  position: sticky; top: calc(var(--header-h) + 16px);
  padding: 28px; border-radius: var(--radius-lg); color: var(--on-dark);
  background: radial-gradient(80% 60% at 100% 0%, rgba(25, 181, 214, .25), transparent 70%), linear-gradient(160deg, var(--navy-700), var(--night));
}
.form-summary h2 { font-size: 16px; color: #fff; }
.form-summary dl { margin: 16px 0 0; display: grid; gap: 10px; font-size: 14px; }
.form-summary dl div { display: flex; justify-content: space-between; gap: 12px; }
.form-summary dt { color: var(--on-dark-muted); }
.form-summary dd { margin: 0; color: #fff; text-align: right; }
.form-summary__total { margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .16); }
.form-summary__total b { font-family: var(--font-en); font-weight: 800; font-size: 30px; color: #fff; }
.form-summary p { margin-top: 12px; font-size: 12.5px; color: var(--on-dark-muted); }
.form-layout { display: grid; grid-template-columns: 1fr 300px; gap: 48px; align-items: start; }
@media (max-width: 960px) { .form-layout { grid-template-columns: 1fr; } .form-summary { position: static; order: -1; } }

/* 送信完了・エラー */
.result { text-align: center; padding: 40px 0; }
.result__icon { width: 72px; height: 72px; margin: 0 auto 24px; color: var(--cyan-600); }
.result h2 { font-size: clamp(22px, 3vw, 28px); color: var(--navy-900); }
.result p { margin-top: 16px; color: var(--slate); }
.result .btn { margin-top: 32px; }
.errors { margin: 24px auto 0; max-width: 520px; text-align: left; padding: 20px 24px; border-radius: var(--radius); background: #FDF0F0; color: #9B2C2C; }
.errors li { list-style: disc; margin-left: 1.2em; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}