/* =========================================================
   FHK-SSL · 响应式：桌面控制台 / 手机 App 布局
   ========================================================= */
.mobile-only { display: none; }
.bottom-nav { display: none; }
.mobile-overlay { display: none; }
body.menu-open { overflow: hidden; }

@media (max-width: 1240px) {
  .hero-inner { gap: 30px; }
  .stat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .dash-grid { grid-template-columns: minmax(0, 1fr) 310px; }
  .admin-dash-grid { grid-template-columns: minmax(0, 1fr) 300px; }
}

@media (max-width: 1100px) {
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero h1 { font-size: clamp(48px, 7.6vw, 80px); }
  .feature-grid, .validation-grid, .provider-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .provider-card:last-child { grid-column: 1 / -1; }
  .dash-grid, .admin-dash-grid { grid-template-columns: minmax(0, 1fr); }
  .dash-side, .admin-dash-side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; }
  .dash-side .tips-card, .admin-dash-side .tips-card { grid-column: 1 / -1; }
  .account-grid, .dns-grid, .user-edit-grid, .settings-layout, .tools-grid { grid-template-columns: minmax(0, 1fr) 300px; }
  .wizard-layout { grid-template-columns: minmax(0, 1fr) 280px; }
}

/* ---------- 平板 / 手机：侧栏抽屉 + 底部导航 ---------- */
@media (max-width: 960px) {
  :root { --header-h: 64px; }
  .app-main { margin-left: 0; }
  .sidebar {
    width: 276px; transform: translateX(-105%);
    transition: transform .32s var(--ease); z-index: 90;
    box-shadow: 10px 0 30px rgba(0,0,0,.18);
  }
  .sidebar.is-open { transform: translateX(0); }
  .mobile-overlay {
    position: fixed; inset: 0; z-index: 80; background: rgba(17,17,16,.42);
    backdrop-filter: blur(3px); border: 0; opacity: 0; pointer-events: none;
    transition: opacity .25s; display: block;
  }
  .mobile-overlay.is-visible { opacity: 1; pointer-events: auto; }
  .menu-btn { display: inline-grid; }
  .app-main .topbar { height: 64px; padding: 0 16px; gap: 10px; }
  .topbar-title h1 { font-size: 17px; }
  .page-body { padding: 20px 16px 106px; }
  .app-admin .page-body { padding-bottom: 40px; }
  .bottom-nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    display: flex; align-items: flex-end; justify-content: space-around;
    padding: 7px 8px calc(7px + env(safe-area-inset-bottom, 0px));
    background: color-mix(in srgb, var(--card) 96%, transparent);
    border-top: 2px solid var(--ink); backdrop-filter: blur(14px);
  }
  .bottom-item {
    display: flex; flex-direction: column; align-items: center; gap: 2px;
    min-width: 54px; padding: 4px 6px 2px; border-radius: 10px;
    font-size: 9.5px; font-weight: 700; color: var(--muted); transition: .16s;
  }
  .bottom-icon { width: 34px; height: 30px; display: grid; place-items: center; border-radius: 9px; transition: .2s var(--ease-spring); }
  .bottom-item.is-active { color: var(--ink); }
  .bottom-item.is-active .bottom-icon { background: var(--lime); border: 1.5px solid var(--ink); box-shadow: 2px 2px 0 var(--ink); transform: translateY(-2px); }
  .bottom-new {
    width: 56px; height: 56px; display: grid; place-items: center; margin: 0 4px 6px;
    border: 2px solid var(--ink); border-radius: 18px; background: var(--ink); color: var(--lime);
    box-shadow: 3px 3px 0 var(--lime); transform: rotate(-4deg); transition: .2s var(--ease-spring);
  }
  .bottom-new:hover { transform: rotate(0deg) translateY(-3px); }
  .bottom-new:active { transform: rotate(0) scale(.95); }
  .toast-stack { bottom: calc(86px + env(safe-area-inset-bottom, 0px)); right: 14px; left: 14px; align-items: stretch; max-width: none; }
  .confirm-dialog { margin: auto; }
  .stat-card { padding: 15px; }
  .stat-num { font-size: 32px; }
  .cert-hero { flex-direction: column; gap: 18px; padding: 20px; }
  .cert-hero-side { flex-basis: auto; width: 100%; flex-direction: row; align-items: stretch; }
  .expiry-big { flex: 1; text-align: left; }
  .hero-quick { align-items: center; justify-content: flex-start; }
  .detail-grid { grid-template-columns: 1fr; }
  .wizard-side { position: static; }
  .account-grid, .dns-grid, .user-edit-grid, .settings-layout, .tools-grid { grid-template-columns: minmax(0, 1fr); }
  .account-side, .dns-side, .user-edit-side, .settings-side, .tools-side { order: 2; }
  .settings-layout .settings-main { order: 1; }
  .sticky-actions { bottom: calc(78px + env(safe-area-inset-bottom, 0px)); }
  .app-admin .sticky-actions { bottom: 12px; }
  .env-list { grid-template-columns: 1fr; }
  .env-list > div:nth-child(2) { border-top: 1.5px dashed color-mix(in srgb, var(--ink) 14%, transparent); }
}

/* ---------- 公共站响应式 ---------- */
@media (max-width: 1020px) {
  .site-nav { display: none; }
  .hero-inner { grid-template-columns: 1fr; padding-top: 50px; gap: 26px; }
  .hero-copy { max-width: 720px; }
  .hero-art { min-height: 410px; width: min(480px, 100%); margin: 0 auto; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .how-steps { grid-template-columns: 1fr; }
  .how-step { display: grid; grid-template-columns: 76px 1fr; column-gap: 10px; align-items: start; }
  .how-num { grid-row: span 2; margin: 0; font-size: 46px; }
  .how-step h3 { margin-bottom: 4px; }
  .auth-page { grid-template-columns: 1fr 1.1fr; gap: 18px; padding: 12px 20px 40px; }
  .auth-brand-panel { padding: 28px; }
  .auth-card { padding: 26px; }
}

@media (max-width: 900px) {
  .auth-brand-panel { display: none; }
  .auth-page { grid-template-columns: minmax(0, 1fr); max-width: 580px; padding-top: 8px; min-height: auto; }
  .auth-form-panel { min-height: calc(100vh - 150px); justify-content: center; }
  .site-header-inner { padding: 0 18px; gap: 12px; }
  .hero-inner { padding: 46px 20px 38px; }
  .section { padding: 58px 20px; }
  .footer-inner { padding: 30px 20px; }
  .footer-meta { flex-direction: column; gap: 5px; }
  .cta-section { padding: 50px 20px; }
  .cta-card { padding: 28px; }
  .prose-card { padding: 28px; }
  .feature-grid, .validation-grid, .provider-cards { grid-template-columns: 1fr; }
  .provider-card:last-child { grid-column: auto; }
  .provider-card p { min-height: 0; }
  .wizard-layout { grid-template-columns: minmax(0, 1fr); }
  .wizard-side { order: 2; }
  .choice-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-dash-side, .dash-side { grid-template-columns: 1fr; }
}

/* ---------- 手机 App 布局 ---------- */
@media (max-width: 720px) {
  body { font-size: 14px; }
  .desktop-only { display: none !important; }
  .mobile-only { display: block; }
  .cert-mobile-list { display: flex; }
  .site-header-inner { height: 62px; padding: 0 14px; }
  .brand-word small { display: none; }
  .brand-mark { font-size: 15px; padding: 6px 9px; }
  .brand-word { font-size: 17px; }
  .site-actions .icon-btn { display: none; }
  .site-actions { gap: 6px; }
  .site-actions .btn { padding: 6px 10px; font-size: 12px; }
  .hero { border-bottom: 0; }
  .hero-inner { padding: 38px 16px 30px; }
  .hero h1 { font-size: clamp(46px, 14vw, 66px); letter-spacing: -.06em; margin-bottom: 18px; }
  .hero-lede { font-size: 14px; }
  .hero-actions { gap: 8px; }
  .hero-actions .btn { flex: 1; min-width: 0; padding: 12px 12px; font-size: 13.5px; }
  .hero-points { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
  .hero-art { min-height: 340px; }
  .cert-stack { width: 88%; }
  .cert-stack-back { inset: 20px -8px -10px 22px; }
  .cert-card-visual { padding: 20px; }
  .cert-domain { font-size: 20px; }
  .floating-chip { font-size: 9px; padding: 5px 8px; }
  .chip-dns { left: -5%; }
  .chip-http { right: -3%; }
  .ticker-track { padding: 10px 0; gap: 18px; }
  .ticker-track span { font-size: 10px; }
  .stats-inner { padding: 16px; grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-inline { padding-left: 12px; }
  .stat-inline b { font-size: 24px; }
  .stat-inline span { font-size: 9px; }
  .section { padding: 46px 16px; }
  .section-head { margin-bottom: 28px; }
  .section-head h2 { font-size: 32px; }
  .feature-card, .validation-card, .provider-card { padding: 19px; }
  .cta-card { padding: 24px 20px; }
  .cta-copy h2 { font-size: 32px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { width: 100%; }
  .footer-inner { padding: 26px 16px; flex-direction: column; gap: 20px; }
  .footer-links { gap: 14px; }
  .footer-meta { padding-top: 14px; }

  .auth-topbar { padding: 14px 16px; }
  .auth-topbar .btn { font-size: 12px; }
  .auth-page { padding: 6px 14px 30px; }
  .auth-form-panel { min-height: calc(100vh - 110px); }
  .auth-card { padding: 22px 18px; border-radius: 20px; }
  .auth-card-head h2 { font-size: 26px; }
  .oauth-btn { padding: 10px 12px; }
  .auth-footnote { font-size: 10px; }
  .prose-page { padding: 24px 14px 50px; }
  .prose-card { padding: 24px 18px; border-radius: 20px; }
  .prose-card p { font-size: 13px; }

  .page-head { margin-bottom: 18px; gap: 12px; align-items: flex-start; }
  .page-head-copy h2 { font-size: 27px; }
  .page-head-copy p { font-size: 12px; }
  .page-head-actions { width: 100%; }
  .page-head-actions .btn { flex: 1; }
  .topbar-new { display: none; }
  .quota-chip { font-size: 9px; padding: 4px 7px; }
  .page-body { padding: 16px 12px 104px; }
  .panel { padding: 16px; border-radius: 16px; box-shadow: 3px 3px 0 var(--ink); }
  .panel-head { margin-bottom: 13px; gap: 10px; }
  .panel-head h3 { font-size: 16px; }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 9px; margin-bottom: 16px; }
  .stat-card { border-radius: 14px; box-shadow: 3px 3px 0 var(--ink); }
  .stat-num { font-size: 29px; }
  .stat-foot { font-size: 9px; margin-top: 9px; padding-top: 8px; }
  .welcome-banner { padding: 14px; gap: 12px; }
  .welcome-icon { width: 40px; height: 40px; }
  .welcome-actions { margin-left: 0; width: 100%; }
  .welcome-actions .btn { flex: 1; }
  .dash-side { gap: 12px; }
  .mini-row { gap: 8px; padding: 10px 2px; }
  .mini-expire { display: none; }
  .expiry-row { gap: 9px; }
  .filter-bar { gap: 10px; }
  .filter-tabs { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 3px; }
  .filter-tab { white-space: nowrap; padding: 6px 10px; font-size: 11.5px; }
  .search-form { margin-left: 0; width: 100%; min-width: 0; }
  .data-table { min-width: 680px; }
  .pagination { gap: 10px; }
  .pagination-meta { width: 100%; }

  .cert-mobile-card { box-shadow: 3px 3px 0 var(--ink); }
  .wizard-progress { padding: 10px 11px; border-radius: 13px; gap: 4px; }
  .wizard-progress-item b { display: none; }
  .wizard-progress-item span { width: 25px; height: 25px; }
  .wizard-progress-item.is-active b { display: inline; font-size: 10.5px; }
  .wizard-step .panel { padding: 16px; }
  .choice-grid, .choice-grid-3 { grid-template-columns: 1fr; gap: 9px; }
  .choice-body { padding: 12px; }
  .wizard-footer { position: sticky; bottom: calc(80px + env(safe-area-inset-bottom, 0px)); z-index: 20; background: color-mix(in srgb, var(--card) 94%, transparent); backdrop-filter: blur(10px); border: 2px solid var(--ink); border-radius: 13px; padding: 8px; box-shadow: 3px 3px 0 var(--ink); flex-wrap: nowrap; }
  .wizard-footer .btn { padding: 9px 12px; font-size: 12px; }
  .wizard-hint { display: none; }
  .wizard-side { order: 2; }
  .summary-card { box-shadow: 3px 3px 0 var(--ink); }
  .field-grid { grid-template-columns: 1fr; gap: 13px; }
  .form-stack { gap: 13px; }
  .panel-desc { font-size: 12px; }
  .switch-row { padding: 12px; gap: 10px; }
  .switch-row b { font-size: 12.5px; }
  .switch-row small { font-size: 10.5px; }

  .cert-hero { padding: 16px; border-radius: 18px; }
  .cert-hero-title { font-size: 25px; }
  .cert-hero-side { flex-direction: column; }
  .expiry-big { display: flex; align-items: center; justify-content: space-between; gap: 10px; text-align: left; padding: 12px; }
  .expiry-big > span { display: none; }
  .expiry-big b { font-size: 30px; }
  .expiry-big em { margin-top: 0; }
  .hero-quick { justify-content: flex-start; }
  .cert-hero::before { width: 180px; height: 180px; right: -80px; top: -90px; }
  .detail-top { align-items: flex-start; }
  .detail-actions { width: 100%; }
  .detail-actions .btn, .detail-actions form { flex: 1; }
  .detail-actions form .btn { width: 100%; }
  .order-progress { grid-template-columns: 1fr 1fr; gap: 6px; }
  .order-step { padding: 7px 8px; }
  .record-grid { grid-template-columns: 1fr; }
  .copy-field { flex-wrap: wrap; }
  .copy-field code { flex: 1 1 60%; white-space: normal; word-break: break-all; }
  .verify-footer { align-items: stretch; }
  .verify-footer form, .verify-footer .btn { width: 100%; }
  .verify-meta { font-size: 10px; }
  .instruction-head p { font-size: 11.5px; }
  .tabs-nav { gap: 2px; }
  .tab-btn { padding: 8px 10px; font-size: 11.5px; }
  .auto-renew-row { flex-direction: column; align-items: flex-start; }
  .download-grid { grid-template-columns: 1fr 1fr; gap: 6px; }
  .download-tile { padding: 9px; }
  .download-tile b { font-size: 10px; }
  .danger-item { flex-direction: column; align-items: flex-start; }
  .danger-item form { width: 100%; }
  .danger-item form .btn { flex: 1; }
  .timeline-head { flex-direction: column; gap: 2px; }
  .code-block { font-size: 9.5px; padding: 11px; }
  .sticky-actions { flex-direction: column; align-items: stretch; padding: 10px; bottom: calc(78px + env(safe-area-inset-bottom, 0px)); }
  .sticky-actions .btn { width: 100%; }

  .account-grid, .dns-grid, .user-edit-grid, .settings-layout, .tools-grid { gap: 13px; }
  .account-side, .dns-side { order: 2; }
  .quota-ring { width: 116px; height: 116px; }
  .binding-item { flex-wrap: wrap; }
  .binding-item form { margin-left: auto; }
  .settings-tabs { margin-bottom: 14px; }
  .settings-tab { padding: 7px 10px; font-size: 11px; }
  .settings-tab .icon { display: none; }
  .settings-main, .settings-side { gap: 13px; }
  .env-list { gap: 0; }
  .chart { height: 170px; gap: 4px; }
  .chart-label { font-size: 7px; }
  .audit-ip { display: none; }
  .audit-row { gap: 8px; }
  .admin-dash-main, .admin-dash-side { gap: 13px; }
  .worker-stats b { font-size: 17px; }
  .tool-action > b { margin-left: 42px; }
  .settings-layout .sticky-actions { bottom: calc(14px + env(safe-area-inset-bottom, 0px)); }
  .diag-item { gap: 6px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 44px; }
  .hero-art { min-height: 300px; }
  .cert-visual-grid { gap: 9px 12px; }
  .login-options { gap: 8px; }
  .stat-grid { gap: 8px; }
  .stat-card { padding: 13px; }
  .stat-num { font-size: 25px; }
  .stat-icon { width: 28px; height: 28px; }
  .stat-trend { font-size: 7.5px; }
  .stat-label { font-size: 11px; }
  .stat-foot { font-size: 8.5px; }
  .page-body { padding-left: 10px; padding-right: 10px; }
  .mini-main small { font-size: 9.5px; }
  .badge { font-size: 10.5px; padding: 2px 7px; }
  .cert-hero-meta { gap: 4px 10px; font-size: 10.5px; }
  .identifier-chip { font-size: 9px; }
  .wizard-footer { bottom: calc(76px + env(safe-area-inset-bottom, 0px)); }
  .download-grid { grid-template-columns: 1fr; }
  .toast-stack { bottom: calc(80px + env(safe-area-inset-bottom, 0px)); }
}

/* ---------- 打印 ---------- */
@media print {
  .sidebar, .topbar, .bottom-nav, .toast-stack, .detail-actions, .tabs-nav,
  .verify-panel, .danger-panel, .site-header, .site-footer { display: none !important; }
  .app-main { margin-left: 0; }
  .page-body { padding: 0; }
  body { background: #fff; }
  .panel, .cert-hero { box-shadow: none; border-color: #000; }
}

@media (min-width: 961px) {
  .app-main .topbar { height: 64px; }
  .topbar-title h1 { display: none; }
  .topbar-title .topbar-eyebrow { font-size: 10px; letter-spacing: .18em; }
}