/* ============================================================
   TAISHI ROCK WOOL — Dark Theme Tokens (v2.0)
   Design language ported from the Taishi brand prototype:
   graphite-blue-black base × ember orange accent, layered
   thermal-strata identity. English B2B export site.
   2026-09-01
   ============================================================ */
:root {
  /* ---- Core palette (prototype) ---- */
  --ink: #0D161C;        /* page base */
  --ink-2: #13212B;      /* card base */
  --ink-3: #1B2C37;      /* raised surface */
  --ink-4: #243A47;      /* hover surface */
  --ember: #FF6A2B;      /* primary accent (ember orange) */
  --amber: #E08A3C;      /* secondary accent */
  --gold: #ECC05A;       /* tertiary accent */
  --teal: #54B6AE;       /* application accent */
  --blue: #8AA2B3;       /* about accent */
  --paper: #F5EFE4;      /* warm paper text */
  --paper-2: #ECE3D2;
  --line: rgba(245, 239, 228, .14);
  --mut: #9AA6AE;        /* muted text on dark */

  /* ---- Brand aliases (WP template compatibility) ---- */
  --navy-950: #0A1117;
  --navy-900: #0D161C;
  --navy-800: #13212B;
  --navy-700: #1B2C37;
  --navy-600: #243A47;
  --amber-700: #D9541A;
  --amber-600: #E86A25;
  --amber-500: #FF6A2B;
  --amber-400: #E08A3C;
  --amber-300: #ECC05A;
  --amber-100: #3A2418;
  --ink-soft: #F5EFE4;
  --muted: #9AA6AE;
  --line-soft: rgba(245, 239, 228, .14);
  --paper-bg: #101A21;   /* tint section background */
  --white: #F5EFE4;      /* warm paper, used as text white */
  --mist: #B9C4CD;
  --soft: #13212B;
  --accent-tone: var(--amber);

  --brand-primary: var(--ember);
  --brand-primary-dark: var(--amber-700);
  --brand-ink: var(--ink);
  --brand-ink-2: var(--ink-2);
  --brand-surface: var(--ink-2);
  --brand-surface-2: var(--paper-bg);
  --brand-surface-3: var(--line);
  --brand-text: var(--paper);
  --brand-text-muted: var(--mut);
  --brand-text-invert: #0D161C;

  /* ---- Semantic ---- */
  --color-success: #4ADE80;
  --color-warning: #FBBF24;
  --color-error: #F87171;

  /* ---- Typography ---- */
  --font-body: "Inter", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-display: "Georgia", "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;
  --lh-tight: 1.15;
  --lh-normal: 1.7;
  --lh-loose: 1.8;

  /* ---- Spacing ---- */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;

  /* ---- Layout ---- */
  --container: 1240px;
  --container-narrow: 840px;
  --gutter: clamp(16px, 4vw, 32px);
  --radius-sm: 2px;
  --radius: 4px;
  --radius-lg: 8px;

  /* ---- Grid ---- */
  --grid-gap: 22px;
  --card-ratio: 4 / 5;

  /* ---- Effects ---- */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, .25);
  --shadow-md: 0 14px 34px -8px rgba(0, 0, 0, .45);
  --shadow-lg: 0 30px 60px -30px rgba(0, 0, 0, .7);
  --shadow-glow: 0 10px 34px -8px rgba(255, 106, 43, .4);
  --header-h: 76px;

  /* ---- Breakpoints ---- */
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
}