:root {
  --dev-bg: #0d0f15;
  --dev-bg-soft: #12151e;
  --dev-surface: #171a24;
  --dev-surface-2: #1d2130;
  --dev-ink: #f5f6fb;
  --dev-muted: #a4a8b7;
  --dev-line: rgba(255, 255, 255, .11);
  --dev-accent: #8b7cff;
  --dev-accent-2: #54c8ff;
  --dev-green: #5dde9d;
  --dev-warm: #f2c36d;
  --dev-danger: #ff6b81;
  --dev-max: 1180px;
  --dev-pad: clamp(20px, 5vw, 68px);
  --dev-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", "Noto Sans JP", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--dev-ink); background: var(--dev-bg); font-family: var(--dev-font); line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.support-page { background: #11131a; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }

.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1001; padding: 9px 13px; border-radius: 8px; background: white; color: #111; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.dev-wrap { width: min(calc(100% - (var(--dev-pad) * 2)), var(--dev-max)); margin: 0 auto; }

.dev-nav { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 26px; min-height: 70px; padding: 10px var(--dev-pad); border-bottom: 1px solid var(--dev-line); background: rgba(13, 15, 21, .84); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.dev-brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; text-decoration: none; }
.dev-brand img { width: 33px; height: 33px; border-radius: 10px; }
.dev-brand span { display: grid; line-height: 1.15; }
.dev-brand strong { font-size: 14px; letter-spacing: .04em; }
.dev-brand small { margin-top: 4px; color: var(--dev-muted); font-size: 9px; font-weight: 600; letter-spacing: .16em; }
.dev-links { display: flex; align-items: center; justify-content: flex-end; gap: clamp(13px, 2vw, 25px); color: var(--dev-muted); font-size: 12px; }
.dev-links a { text-decoration: none; }
.dev-links a:hover, .dev-links a:focus-visible { color: var(--dev-ink); }
.lang-switch { display: flex; align-items: center; gap: 3px; padding: 3px; border: 1px solid var(--dev-line); border-radius: 999px; }
.lang-switch a, .lang-switch span { padding: 3px 9px; border-radius: 999px; }
.lang-switch [aria-current="page"] { background: rgba(255, 255, 255, .1); color: var(--dev-ink); }

.breadcrumb { width: min(calc(100% - (var(--dev-pad) * 2)), var(--dev-max)); margin: 0 auto; padding-top: 18px; color: #828696; font-size: 11px; }
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 7px; color: #505462; }
.breadcrumb a { text-decoration: none; }

.dev-hero { position: relative; overflow: hidden; padding: clamp(82px, 11vw, 148px) 0 clamp(72px, 10vw, 126px); }
.dev-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 78% 16%, rgba(139, 124, 255, .18), transparent 29%), radial-gradient(circle at 15% 32%, rgba(84, 200, 255, .09), transparent 27%), linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: auto, auto, 74px 74px, 74px 74px; mask-image: linear-gradient(to bottom, black 25%, transparent 96%); pointer-events: none; }
.dev-hero-inner { position: relative; text-align: center; }
.eyebrow { margin: 0 0 20px; color: var(--dev-accent-2); font-size: 11px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase; }
.dev-hero h1 { max-width: 930px; margin: 0 auto; font-size: clamp(42px, 8vw, 92px); font-weight: 620; letter-spacing: -.055em; line-height: 1.04; }
.gradient-text { color: transparent; background: linear-gradient(105deg, #e5e3ff 5%, var(--dev-accent-2) 48%, var(--dev-accent) 90%); background-clip: text; -webkit-background-clip: text; }
.hero-lead { max-width: 690px; margin: 30px auto 0; color: var(--dev-muted); font-size: clamp(15px, 2vw, 19px); line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 11px; margin-top: 34px; }
.dev-button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid transparent; border-radius: 999px; background: linear-gradient(120deg, #6f77ff, #7651c8); color: white; text-decoration: none; font-size: 13px; font-weight: 650; box-shadow: 0 14px 36px rgba(109, 92, 238, .2); transition: transform .2s ease, border-color .2s ease; }
.dev-button:hover { transform: translateY(-2px); }
.dev-button.secondary { border-color: var(--dev-line); background: rgba(255,255,255,.04); box-shadow: none; color: var(--dev-ink); }
.dev-button.is-disabled { border-color: var(--dev-line); background: rgba(255,255,255,.045); box-shadow: none; color: #737786; cursor: not-allowed; transform: none; }
.availability-note { margin: 14px 0 0; color: #777b8a; font-size: 11px; }

.hero-frame { position: relative; margin: clamp(52px, 8vw, 92px) auto 0; padding: 8px; border: 1px solid rgba(255,255,255,.16); border-radius: 20px; background: linear-gradient(135deg, rgba(255,255,255,.11), rgba(255,255,255,.025)); box-shadow: 0 42px 100px rgba(0,0,0,.46); }
.hero-frame::before { content: ""; position: absolute; inset: 10% 12% -16%; z-index: -1; background: rgba(116,91,230,.23); filter: blur(70px); }
.hero-frame img { width: 100%; border-radius: 13px; }

.dev-section { padding: clamp(78px, 10vw, 132px) 0; border-top: 1px solid var(--dev-line); }
.dev-section.soft { background: var(--dev-bg-soft); }
.section-head { display: grid; grid-template-columns: minmax(0, .9fr) minmax(300px, .8fr); gap: clamp(30px, 7vw, 88px); align-items: end; margin-bottom: 50px; }
.section-head h2 { margin: 0; font-size: clamp(32px, 5vw, 58px); font-weight: 620; letter-spacing: -.04em; line-height: 1.16; }
.section-head p:last-child { margin: 0; color: var(--dev-muted); font-size: 15px; line-height: 2; }
.feature-image { overflow: hidden; border: 1px solid var(--dev-line); border-radius: 18px; background: #090b10; box-shadow: 0 28px 72px rgba(0,0,0,.3); }
.feature-image img { width: 100%; }

.workflow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.workflow-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--dev-line); border-radius: 17px; background: var(--dev-surface); overflow: hidden; }
.workflow-copy { padding: 24px 24px 26px; }
.step-number { color: var(--dev-accent-2); font-size: 11px; font-weight: 700; letter-spacing: .18em; }
.workflow-card h3 { margin: 12px 0 9px; font-size: 22px; letter-spacing: -.02em; }
.workflow-card p { margin: 0; color: var(--dev-muted); font-size: 13px; line-height: 1.85; }
.workflow-card figure { order: -1; height: 220px; margin: 0; overflow: hidden; background: #080a0f; }
.workflow-card img { width: 100%; height: 100%; object-fit: cover; object-position: center; }

.split-section { display: grid; grid-template-columns: minmax(0, .88fr) minmax(380px, 1.12fr); gap: clamp(34px, 8vw, 100px); align-items: center; }
.split-section.reverse .split-copy { order: 2; }
.split-copy h2 { margin: 0; font-size: clamp(32px, 5vw, 57px); letter-spacing: -.04em; line-height: 1.16; }
.split-copy > p:not(.eyebrow) { margin: 24px 0 0; color: var(--dev-muted); font-size: 15px; line-height: 2; }
.check-list { display: grid; gap: 12px; margin: 27px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 25px; color: #d3d5df; font-size: 13px; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .68em; width: 8px; height: 8px; border: 2px solid var(--dev-accent); border-radius: 50%; }
.source-link { display: inline-flex; margin-top: 24px; color: var(--dev-accent-2); font-size: 12px; text-decoration: none; }
.split-visual { overflow: hidden; border: 1px solid var(--dev-line); border-radius: 18px; background: var(--dev-surface); }
.split-visual img { width: 100%; }

.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 48px; border: 1px solid var(--dev-line); border-radius: 16px; overflow: hidden; }
.capability { min-height: 150px; padding: 24px; border-right: 1px solid var(--dev-line); border-bottom: 1px solid var(--dev-line); background: rgba(255,255,255,.018); }
.capability:nth-child(4n) { border-right: 0; }
.capability:nth-last-child(-n+4) { border-bottom: 0; }
.capability strong { display: block; font-size: 15px; }
.capability span { display: block; margin-top: 10px; color: var(--dev-muted); font-size: 12px; line-height: 1.75; }
.boundary-note { margin-top: 22px; padding: 18px 20px; border: 1px solid rgba(242,195,109,.24); border-radius: 12px; background: rgba(242,195,109,.06); color: #d8c499; font-size: 13px; }

.privacy-panel { display: grid; grid-template-columns: minmax(0, .85fr) minmax(320px, 1.15fr); gap: clamp(34px, 8vw, 92px); align-items: start; }
.privacy-panel h2 { margin: 0; font-size: clamp(34px, 5vw, 60px); letter-spacing: -.045em; line-height: 1.14; }
.privacy-copy { padding-top: 6px; }
.privacy-copy p { margin: 0 0 18px; color: var(--dev-muted); font-size: 14px; line-height: 2; }
.policy-links { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.policy-links a { padding: 8px 12px; border: 1px solid var(--dev-line); border-radius: 999px; color: #c6c9d5; text-decoration: none; font-size: 11px; }

.price-card { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 36px; align-items: center; padding: clamp(30px, 6vw, 66px); border: 1px solid rgba(139,124,255,.32); border-radius: 22px; background: radial-gradient(circle at 84% 10%, rgba(84,200,255,.12), transparent 33%), linear-gradient(135deg, rgba(139,124,255,.12), rgba(255,255,255,.025)); overflow: hidden; }
.price-card h2 { margin: 0; font-size: clamp(34px, 5vw, 59px); letter-spacing: -.045em; line-height: 1.15; }
.price-card p { max-width: 650px; margin: 18px 0 0; color: var(--dev-muted); }
.price-display { min-width: 250px; padding: 24px; border: 1px solid var(--dev-line); border-radius: 16px; background: rgba(8,10,15,.58); }
.price-display small, .price-display span { display: block; color: var(--dev-muted); }
.price-display strong { display: block; margin: 8px 0; font-size: 34px; letter-spacing: -.04em; }
.price-display small { color: var(--dev-accent-2); font-size: 12px; font-weight: 700; }
.price-display span { font-size: 11px; }

.dev-portal-hero { min-height: 72svh; display: grid; place-items: center; position: relative; overflow: hidden; padding: 96px 0; }
.dev-portal-hero::before { content: ""; position: absolute; width: 740px; height: 740px; border: 1px solid rgba(139,124,255,.13); border-radius: 50%; box-shadow: 0 0 0 110px rgba(84,200,255,.025), 0 0 0 220px rgba(139,124,255,.018); }
.dev-portal-copy { position: relative; max-width: 820px; text-align: center; }
.dev-portal-copy h1 { margin: 0; font-size: clamp(55px, 11vw, 116px); letter-spacing: -.065em; line-height: .95; }
.dev-portal-copy .hero-lead { max-width: 610px; }
.product-entry { display: grid; grid-template-columns: minmax(0, .78fr) minmax(420px, 1.22fr); gap: clamp(34px, 8vw, 92px); align-items: center; }
.product-entry h2 { margin: 0; font-size: clamp(40px, 6vw, 72px); letter-spacing: -.05em; line-height: 1.04; }
.product-entry h2 small { display: block; margin-bottom: 16px; color: var(--dev-accent-2); font-size: 12px; font-weight: 700; letter-spacing: .15em; }
.product-entry p { margin: 22px 0 0; color: var(--dev-muted); }
.future-note { padding: 30px; border: 1px dashed rgba(255,255,255,.16); border-radius: 16px; color: var(--dev-muted); text-align: center; }
.future-note strong { display: block; margin-bottom: 6px; color: var(--dev-ink); font-size: 15px; }

.support-layout { display: grid; grid-template-columns: 220px minmax(0, 780px); gap: clamp(30px, 6vw, 72px); align-items: start; width: min(calc(100% - (var(--dev-pad) * 2)), 1080px); margin: 0 auto; padding: 46px 0 100px; }
.support-toc { position: sticky; top: 96px; display: grid; gap: 5px; padding: 16px; border: 1px solid var(--dev-line); border-radius: 14px; background: rgba(255,255,255,.025); }
.support-toc strong { margin: 1px 8px 10px; color: #818594; font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.support-toc a { padding: 7px 8px; border-radius: 7px; color: var(--dev-muted); text-decoration: none; font-size: 12px; }
.support-toc a:hover { background: rgba(255,255,255,.05); color: var(--dev-ink); }
.support-main { min-width: 0; }
.support-head { padding: 20px 0 48px; border-bottom: 1px solid var(--dev-line); }
.support-head h1 { margin: 0; font-size: clamp(40px, 7vw, 66px); letter-spacing: -.05em; line-height: 1.08; }
.support-head p:last-child { max-width: 620px; margin: 18px 0 0; color: var(--dev-muted); }
.support-section { scroll-margin-top: 92px; padding: 46px 0; border-bottom: 1px solid var(--dev-line); }
.support-section h2 { margin: 0 0 22px; font-size: 26px; letter-spacing: -.025em; }
.support-section h3 { margin: 27px 0 8px; font-size: 16px; }
.support-section p, .support-section li { color: var(--dev-muted); font-size: 13px; line-height: 1.9; }
.support-section ul, .support-section ol { padding-left: 20px; }
.support-section a { color: #8cd8ff; }
.support-callout { margin: 22px 0; padding: 18px 20px; border-left: 3px solid var(--dev-accent); border-radius: 0 10px 10px 0; background: rgba(139,124,255,.07); }
.support-callout strong { display: block; margin-bottom: 7px; color: var(--dev-ink); font-size: 14px; }
.support-callout p { margin: 0; }
.support-faq { border: 1px solid var(--dev-line); border-radius: 13px; overflow: hidden; }
.support-faq details { border-bottom: 1px solid var(--dev-line); }
.support-faq details:last-child { border-bottom: 0; }
.support-faq summary { padding: 17px 18px; cursor: pointer; font-size: 14px; font-weight: 650; list-style: none; }
.support-faq summary::-webkit-details-marker { display: none; }
.support-faq summary::after { content: "+"; float: right; color: var(--dev-accent-2); }
.support-faq details[open] summary::after { content: "−"; }
.support-faq details p { margin: 0; padding: 0 18px 18px; }
.support-link-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.support-link-grid a, .support-link-grid span { display: block; padding: 17px; border: 1px solid var(--dev-line); border-radius: 11px; background: rgba(255,255,255,.022); text-decoration: none; }
.support-link-grid strong { display: block; color: var(--dev-ink); font-size: 13px; }
.support-link-grid small { display: block; margin-top: 4px; color: var(--dev-muted); font-size: 10px; }
.support-link-grid .is-disabled { color: #6c7080; cursor: not-allowed; }

.support-contact { max-width: 640px; margin: 0 auto; }
.support-contact-head { text-align: center; }
.support-contact-head h2 { margin: 16px 0 0; font-size: clamp(30px, 5vw, 46px); letter-spacing: -.04em; line-height: 1.12; }
.contact-form { display: grid; gap: 22px; margin-top: 44px; }
.field-group { display: grid; gap: 9px; }
.field-label { color: var(--dev-muted); font-size: 12px; font-weight: 650; letter-spacing: .02em; }
.field-label .required { color: var(--dev-danger); }
.field-input { width: 100%; padding: 13px 15px; border: 1px solid var(--dev-line); border-radius: 11px; background: var(--dev-surface); color: var(--dev-ink); font: inherit; font-size: 13px; outline: none; transition: border-color .15s ease; }
.field-input::placeholder { color: #6b6f7d; }
.field-input:focus { border-color: var(--dev-accent); }
textarea.field-input { resize: vertical; min-height: 130px; line-height: 1.7; }
.segmented { display: flex; flex-wrap: wrap; gap: 8px; }
.segmented-option { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 9px 14px; border: 1px solid var(--dev-line); border-radius: 11px; background: var(--dev-surface); color: var(--dev-muted); font-size: 12px; font-weight: 650; cursor: pointer; transition: border-color .15s ease, color .15s ease, background .15s ease; }
.segmented-option small { color: inherit; font-size: 10px; font-weight: 500; opacity: .75; }
.segmented-option:hover { color: var(--dev-ink); }
.segmented-option[aria-pressed="true"] { border-color: var(--dev-accent); color: var(--dev-ink); background: rgba(139,124,255,.14); }
.field-error { margin: 0; padding: 12px 14px; border-left: 3px solid var(--dev-danger); border-radius: 0 8px 8px 0; background: rgba(255,107,129,.08); color: #ffb4c0; font-size: 12px; }
.contact-form .dev-button { justify-self: start; border: none; cursor: pointer; }
.contact-form .dev-button:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.contact-note { margin: 0; color: #7d8191; font-size: 11px; line-height: 1.9; }
.contact-note a { color: #8cd8ff; }
.contact-done { display: grid; justify-items: center; gap: 12px; margin-top: 44px; padding: 46px 24px; border: 1px solid var(--dev-line); border-radius: 16px; background: rgba(93,222,157,.06); text-align: center; }
.contact-done-icon { margin: 0; font-size: 36px; }
.contact-done h3 { margin: 0; font-size: 20px; }
.contact-done p { margin: 0; max-width: 420px; color: var(--dev-muted); font-size: 13px; line-height: 1.9; }

.dev-footer { padding: 42px var(--dev-pad); border-top: 1px solid var(--dev-line); background: #090b10; }
.footer-inner { width: min(100%, var(--dev-max)); margin: 0 auto; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 16px; color: var(--dev-muted); font-size: 11px; }
.footer-links a { text-decoration: none; }
.footer-copy { margin: 28px 0 0; color: #646876; font-size: 10px; }

@media (max-width: 900px) {
  .section-head, .split-section, .privacy-panel, .product-entry { grid-template-columns: 1fr; }
  .split-section.reverse .split-copy { order: initial; }
  .workflow-grid { grid-template-columns: 1fr; }
  .workflow-card { display: grid; grid-template-columns: minmax(250px, .9fr) 1fr; }
  .workflow-card figure { order: initial; height: 100%; min-height: 250px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .capability:nth-child(4n) { border-right: 1px solid var(--dev-line); }
  .capability:nth-child(2n) { border-right: 0; }
  .capability:nth-last-child(-n+4) { border-bottom: 1px solid var(--dev-line); }
  .capability:nth-last-child(-n+2) { border-bottom: 0; }
  .price-card { grid-template-columns: 1fr; }
  .price-display { min-width: 0; }
  .support-layout { grid-template-columns: 1fr; }
  .support-toc { position: static; grid-template-columns: repeat(3, 1fr); }
  .support-toc strong { grid-column: 1 / -1; }
}

@media (max-width: 650px) {
  .dev-nav { align-items: flex-start; min-height: 62px; padding-block: 10px; }
  .dev-brand small { display: none; }
  .dev-links > a:not(.always) { display: none; }
  .dev-hero h1 { font-size: clamp(39px, 13vw, 58px); }
  .hero-frame { width: calc(100% + 24px); margin-left: -12px; border-radius: 13px; }
  .hero-frame img { border-radius: 8px; }
  .section-head { margin-bottom: 34px; }
  .workflow-card { display: flex; }
  .workflow-card figure { order: -1; min-height: 190px; height: 190px; }
  .capability-grid, .support-link-grid { grid-template-columns: 1fr; }
  .segmented { flex-direction: column; }
  .segmented-option { width: 100%; }
  .capability { border-right: 0 !important; border-bottom: 1px solid var(--dev-line) !important; }
  .capability:last-child { border-bottom: 0 !important; }
  .support-toc { grid-template-columns: repeat(2, 1fr); }
  .footer-top { align-items: flex-start; flex-direction: column; }
  .footer-links { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}