/* OCEAN 1.0 — implementation baseline. Values are documented recommendations. */
:root {
  --color-blue: #193D58;
  --color-purple: #60516E;
  --color-wine: #914F60;
  --color-navy: #14213D;
  --color-background: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-surface-alt: #EAF0F4;
  --color-border: #CBD5DF;
  --color-border-strong: #708496;
  --color-text: #14213D;
  --color-text-muted: #526477;
  --color-text-inverse: #FFFFFF;
  --color-primary: #193D58;
  --color-primary-hover: #102D44;
  --color-primary-active: #0B2235;
  --color-error: #A12F43;
  --color-success: #28604E;
  --color-disabled-bg: #EAF0F4;
  --color-disabled-text: #526477;
  --ocean-blue: #193D58;
  --ocean-purple: #60516E;
  --ocean-wine: #914F60;
  --ocean-navy: #14213D;
  --color-action: var(--color-primary);
  --space-0: 0px;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;
  --space-80: 80px;
  --space-112: 112px;
  --radius-none: 0px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --type-caption: 0.875rem;
  --type-body: 1rem;
  --type-mobile-lead: 1.125rem;
  --type-lead: 1.25rem;
  --type-mobile-h3: 1.5rem;
  --type-h3: 1.75rem;
  --type-mobile-h1: 2.25rem;
  --type-h2: 2.5rem;
  --type-h1: 3.5rem;
  --font-heading: "Noto Serif JP", "Yu Mincho", serif;
  --font-body: "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  --font-latin: Georgia, serif;
  --line-heading: 1.45;
  --line-body: 1.8;
  --container-max: 1200px;
  --prose-max: 720px;
  --page-margin: 20px;
  --section-space: 64px;
  --grid-gap: 16px;
  --header-height: 64px;
  --shadow-overlay: 0 8px 24px rgba(20,33,61,.12);
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --ease: cubic-bezier(.2,0,0,1);
  --brand-gradient: linear-gradient(115deg,#193D58 0%,#193D58 60%,#60516E 85%,#914F60 100%);
}
/* Import after a reset. Prefix components with ocean- to avoid site collisions. */
.ocean-theme { color:var(--color-text);background:var(--color-surface);font-family:var(--font-body);font-size:1rem;line-height:var(--line-body); }
.ocean-theme *, .ocean-theme *::before, .ocean-theme *::after { box-sizing:border-box; }
.ocean-container { width:calc(100% - 2 * var(--page-margin));max-width:var(--container-max);margin-inline:auto; }
.ocean-prose { max-width:var(--prose-max); }
.ocean-section { padding-block:var(--section-space); }
.ocean-h1 { font-family:var(--font-heading);font-size:var(--type-mobile-h1);line-height:1.35;font-weight:500; }
.ocean-h2 { font-family:var(--font-heading);font-size:1.75rem;line-height:1.45;font-weight:500; }
.ocean-h3 { font-family:var(--font-heading);font-size:1.5rem;line-height:1.45;font-weight:500; }
.ocean-lead { font-size:var(--type-mobile-lead); }
.ocean-button { display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;min-width:48px;padding:12px 24px;border:2px solid transparent;border-radius:4px;font:500 1rem/1.5 var(--font-body);text-decoration:none;background:var(--color-primary);color:white;cursor:pointer;transition:background var(--duration-fast) var(--ease); }
.ocean-button:hover { background:var(--color-primary-hover); }
.ocean-button:active { background:var(--color-primary-active); }
.ocean-button--secondary { background:white;color:var(--color-primary);border-color:var(--color-primary); }
.ocean-button--secondary:hover { background:var(--color-surface-alt); }
.ocean-button--secondary:active { background:var(--color-border); }
.ocean-button:disabled, .ocean-button[aria-disabled="true"] { background:var(--color-disabled-bg);color:var(--color-disabled-text);border-color:transparent;cursor:not-allowed; }
.ocean-theme :focus-visible { outline:2px solid #193D58;outline-offset:3px;box-shadow:0 0 0 3px #FFFFFF; }
.ocean-link { color:var(--color-primary);text-decoration:underline;text-underline-offset:.2em; }
.ocean-card { padding:32px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);box-shadow:none; }
.ocean-label { display:block;margin-bottom:8px;font-size:1rem;font-weight:500; }
.ocean-input { display:block;width:100%;min-height:48px;padding:12px;border:1px solid var(--color-border-strong);border-radius:4px;background:white;color:var(--color-text);font:400 1rem/1.5 var(--font-body); }
textarea.ocean-input { min-height:160px;resize:vertical; }
.ocean-input[aria-invalid="true"] { border:2px solid var(--color-error); }
.ocean-error { color:var(--color-error);margin-top:8px;font-size:.875rem; }
.ocean-success { color:var(--color-success); }
.ocean-theme [id] { scroll-margin-top:calc(var(--header-height) + 24px); }
.ocean-theme img { max-width:100%;height:auto; }
.ocean-dark { --color-text:#FFFFFF;--color-text-muted:#CCD6E0;--color-background:#14213D;--color-surface:#193D58;--color-border:#708496;--color-primary:#FFFFFF;--color-error:#FFB3C1;--color-success:#A7D9C4;background:#14213D;color:#FFFFFF; }
.ocean-dark .ocean-button { color:#193D58;background:white; }
.ocean-dark .ocean-button:hover { background:#EAF0F4; }
.ocean-dark .ocean-button:active { background:#CBD5DF; }
.ocean-dark .ocean-button:disabled, .ocean-dark .ocean-button[aria-disabled="true"] { color:#526477;background:#EAF0F4; }
.ocean-dark .ocean-input { background:white;color:#14213D; }
.ocean-dark .ocean-input[aria-invalid="true"] { border-color:#A12F43; }
@media (min-width:768px) {
  :root { --page-margin:32px;--grid-gap:24px; }
}
@media (min-width:1024px) {
  :root { --page-margin:48px;--grid-gap:32px;--section-space:112px;--header-height:80px; }
  .ocean-h1 { font-size:var(--type-h1); }
  .ocean-h2 { font-size:var(--type-h2); }
  .ocean-h3 { font-size:var(--type-h3); }
  .ocean-lead { font-size:var(--type-lead); }
}
@media (min-width:1440px) { .ocean-container { max-width:1200px; } }
@media (prefers-reduced-motion:reduce) {
  .ocean-theme *, .ocean-theme *::before, .ocean-theme *::after { animation:none!important;transition:none!important;scroll-behavior:auto!important; }
}