/**
 * 风简屿 · Responsive Overrides
 *
 * RULES:
 * - All styles MUST be inside media queries
 * - Tablet: max-width 1024px
 * - Mobile: max-width 768px
 * - Small mobile: max-width 480px
 * - Extra small: max-width 390px
 *
 * This file adds mobile/tablet overrides ONLY.
 * Desktop styles come from styles.css — this file never affects 1025px+.
 */

/* ============================================================
   TABLET · 768px - 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .c { padding: 0 48px; }
  .c-narrow { padding: 0 48px; }

  .hero { grid-template-columns: 1fr; }
  .hero-visual { height: 48vh; min-height: 280px; }
  .hero-content { padding: 90px 48px 48px; }
  .hero-title {
    font-size: clamp(32px, 5.5vw, 56px);
    letter-spacing: -0.05em;
    line-height: 0.92;
  }
  .hero-copy { max-width: 420px; }

  .proc-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .del-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section { padding: 72px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .cta-band { padding: 80px 0; }
}

/* ============================================================
   MOBILE LANDSCAPE · up to 768px
   ============================================================ */
@media (max-width: 768px) {
  /* ── Nav ── */
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  /* ── Hero ── */
  .hero { grid-template-columns: 1fr; }
  .hero-content { padding: 80px 32px 36px; }
  .hero-title {
    font-size: clamp(30px, 9vw, 52px);
    letter-spacing: -0.045em;
    line-height: 0.95;
  }
  .hero-copy {
    font-size: clamp(13px, 3.8vw, 15px);
    max-width: 100%;
    line-height: 1.8;
  }
  .hero-visual {
    width: 100%;
    height: 260px;
    min-height: 220px;
    margin-top: 24px;
    order: 99; /* push to bottom of hero */
  }
  .hero-btn,
  .btn-dark { font-size: 13px; padding: 12px 24px; }

  /* ── Brand Strip ── */
  .brand-strip {
    padding: 20px 32px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  /* ── Sections ── */
  .section { padding: 56px 0; }
  .section-title {
    font-size: clamp(22px, 6vw, 36px);
    letter-spacing: -0.04em;
    line-height: 1.0;
  }

  /* ── Grids ── */
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
  .proc-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .del-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .why-grid { grid-template-columns: 1fr; }

  /* ── Cards ── */
  .card { padding: 16px; }

  /* ── CTA Band ── */
  .cta-band { padding: 64px 0; }
  .cta-title {
    font-size: clamp(24px, 7vw, 40px);
    line-height: 1.0;
  }
  .cta-sub { font-size: 13px; margin-bottom: 32px; }

  /* ── Footer ── */
  .footer { padding: 48px 0 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }

  /* ── Forms ── */
  .form-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   MOBILE PORTRAIT · up to 600px
   ============================================================ */
@media (max-width: 600px) {
  .c { padding: 0 24px; }
  .c-narrow { padding: 0 24px; }

  .hero-content { padding: 72px 24px 32px; }
  .hero-title {
    font-size: clamp(28px, 9.5vw, 46px);
  }
  .hero-visual {
    height: 240px;
    min-height: 200px;
  }
  .hero-copy { font-size: clamp(13px, 4vw, 15px); }

  .section { padding: 48px 0; }
  .section-title { font-size: clamp(20px, 6.5vw, 32px); }

  .proc-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .del-grid { grid-template-columns: 1fr; gap: 12px; }
  .svc-title { font-size: 15px; }
  .svc-desc { font-size: 12px; line-height: 1.75; }

  .brand-strip { padding: 16px 24px; gap: 12px; }
  .brand-strip .num { font-size: 20px; }
  .brand-strip .lbl { font-size: 10px; }

  .footer { padding: 40px 0 20px; }
  .footer-grid { gap: 20px; }
  .cta-band { padding: 56px 0; }
  .cta-title { font-size: clamp(22px, 7vw, 36px); }
  .cta-sub { font-size: 12px; margin-bottom: 28px; }
  .btn-dark,
  .btn-light { font-size: 12px; padding: 11px 20px; }

  .stat .num { font-size: 22px; }
  .proc-num { font-size: 22px; }
}

/* ============================================================
   SMALL MOBILE · up to 480px
   ============================================================ */
@media (max-width: 480px) {
  .c { padding: 0 20px; }
  .c-narrow { padding: 0 20px; }

  .hero-content { padding: 64px 20px 28px; }
  .hero-title {
    font-size: clamp(26px, 10vw, 42px);
    letter-spacing: -0.04em;
    line-height: 1.0;
  }
  .hero-visual {
    height: 220px;
    min-height: 180px;
    margin-top: 20px;
  }
  .hero-copy { font-size: 13px; line-height: 1.75; }
  .hero-btn,
  .btn-dark { font-size: 12px; padding: 11px 20px; }

  .section { padding: 40px 0; }
  .section-title { font-size: clamp(18px, 7vw, 28px); letter-spacing: -0.035em; }

  .proc-grid { grid-template-columns: 1fr; gap: 12px; }
  .del-grid { grid-template-columns: 1fr; gap: 10px; }
  .svc-num { font-size: 9px; letter-spacing: 0.16em; }
  .svc-title { font-size: 14px; }
  .svc-desc { font-size: 12px; }
  .card { padding: 14px; }
  .card h3 { font-size: 14px; }

  .brand-strip { padding: 14px 20px; gap: 10px; }
  .brand-strip .num { font-size: 18px; }
  .brand-strip .lbl { font-size: 9px; }

  .footer { padding: 36px 0 18px; }
  .footer-grid { gap: 18px; }
  .footer h4 { font-size: 9px; letter-spacing: 0.18em; }
  .footer ul li a { font-size: 12px; }
  .footer-brand p { font-size: 12px; }
  .footer-bottom { font-size: 10px; }

  .cta-band { padding: 48px 0; }
  .cta-title { font-size: clamp(20px, 7.5vw, 32px); }
  .cta-sub { font-size: 11px; margin-bottom: 24px; }
  .btn-dark,
  .btn-light { font-size: 11px; padding: 10px 18px; }
  .cta-row { gap: 8px; }

  .stat .num { font-size: 20px; }
  .proc-num { font-size: 20px; }
}

/* ============================================================
   EXTRA SMALL · up to 390px
   ============================================================ */
@media (max-width: 390px) {
  .c { padding: 0 16px; }
  .c-narrow { padding: 0 16px; }

  .hero-content { padding: 56px 16px 24px; }
  .hero-title {
    font-size: clamp(24px, 10vw, 36px);
    letter-spacing: -0.035em;
    line-height: 1.05;
  }
  .hero-visual {
    height: 180px;
    min-height: 160px;
    margin-top: 16px;
  }
  .hero-copy { font-size: 12px; line-height: 1.7; }
  .hero-btn,
  .btn-dark { font-size: 11px; padding: 10px 16px; }

  .section { padding: 36px 0; }
  .section-title { font-size: clamp(18px, 7vw, 26px); }

  .brand-strip { padding: 12px 16px; }
  .brand-strip .num { font-size: 16px; }
  .brand-strip .lbl { font-size: 9px; }

  .footer { padding: 32px 0 16px; }
  .footer-grid { gap: 16px; }
  .footer h4 { font-size: 8px; }
  .footer ul li a { font-size: 11px; }
  .footer-brand p { font-size: 11px; }
  .footer-bottom { font-size: 9px; }

  .cta-band { padding: 40px 0; }
  .cta-title { font-size: clamp(18px, 8vw, 28px); }
  .cta-sub { font-size: 11px; margin-bottom: 20px; }
  .btn-dark,
  .btn-light { font-size: 11px; padding: 10px 16px; }

  .proc-num { font-size: 18px; }
  .stat .num { font-size: 18px; }
  .card { padding: 12px; }
  .card h3 { font-size: 13px; }
}

/* ============================================================
   TOUCH DEVICE OPTIMIZATIONS
   Only targets touch devices, never desktop hover states
   ============================================================ */
@media (hover: none) and (pointer: coarse) {
  .btn-dark:hover,
  .btn-light:hover {
    transform: none;
    opacity: 0.92;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .hero-visual,
  .hamburger,
  .mobile-nav { display: none !important; }
  .hero { grid-template-columns: 1fr; }
}