/*
Theme Name: サウナ宿ビジネス研究会
Theme URI: https://example.com/sauna-yado
Author: EMJ
Author URI: https://executive-marketing-japan.co.jp
Description: サウナ宿ビジネス研究会専用テーマ。サウナ付き古民家宿ビジネスの情報発信・リスト取得・セミナー誘導に最適化。管理画面からカラー変更、ヒーロー動画設定、CTA管理が可能。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: Proprietary
License URI: https://executive-marketing-japan.co.jp
Text Domain: sauna-yado
Tags: custom-background, custom-logo, custom-menu, featured-images, full-width-template
*/

/* ============================================
   CSS Variables (Customizer overridable)
   ============================================ */
:root {
  --sy-primary: #B85C38;
  --sy-primary-dark: #8E4528;
  --sy-secondary: #5C3D2E;
  --sy-accent: #E8C07D;
  --sy-accent-light: #FDF6EC;
  --sy-bg: #FFFFFF;
  --sy-text: #2C2C2C;
  --sy-text-light: #6B6B6B;
  --sy-border: #E5DED6;
  --sy-radius: 8px;
  --sy-font-body: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --sy-font-heading: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --sy-max-width: 1100px;
  --sy-content-width: 780px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sy-font-body);
  color: var(--sy-text);
  background: var(--sy-bg);
  line-height: 1.9;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--sy-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--sy-primary-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--sy-font-heading);
  font-weight: 700;
  line-height: 1.5;
  color: var(--sy-text);
}

/* ============================================
   Layout
   ============================================ */
.sy-container {
  max-width: var(--sy-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.sy-content-area {
  max-width: var(--sy-content-width);
  margin: 0 auto;
}

/* ============================================
   Header
   ============================================ */
.sy-header {
  background: var(--sy-bg);
  border-bottom: 1px solid var(--sy-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s;
}
.sy-header.is-scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
.sy-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--sy-max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.sy-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 15px;
  color: var(--sy-text);
  text-decoration: none;
}
.sy-logo img { height: 36px; width: auto; }
.sy-logo:hover { color: var(--sy-primary); }

/* Navigation */
.sy-nav { display: flex; align-items: center; gap: 28px; }
.sy-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--sy-text);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
}
.sy-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--sy-primary);
  transition: width 0.3s;
}
.sy-nav a:hover::after,
.sy-nav a.current-menu-item::after { width: 100%; }

.sy-header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--sy-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 40px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.sy-header-cta:hover {
  background: var(--sy-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.sy-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
}
.sy-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--sy-text);
  position: absolute;
  left: 5px;
  transition: all 0.3s;
}
.sy-menu-toggle span:nth-child(1) { top: 9px; }
.sy-menu-toggle span:nth-child(2) { top: 15px; }
.sy-menu-toggle span:nth-child(3) { top: 21px; }
.sy-menu-toggle.is-active span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.sy-menu-toggle.is-active span:nth-child(2) { opacity: 0; }
.sy-menu-toggle.is-active span:nth-child(3) { top: 15px; transform: rotate(-45deg); }

/* ============================================
   Hero (Front Page)
   ============================================ */
.sy-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--sy-secondary);
}
.sy-hero-video {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.sy-hero-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sy-hero-video::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(44,30,20,0.55) 0%,
    rgba(44,30,20,0.35) 50%,
    rgba(44,30,20,0.65) 100%
  );
  z-index: 2;
}
/* Desktop video shown by default, mobile hidden */
.sy-hero-video--mobile { display: none; }

.sy-hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: #fff;
  padding: 40px 24px;
  max-width: 720px;
}
.sy-hero-label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  border: 1px solid rgba(255,255,255,0.35);
  padding: 6px 20px;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}
.sy-hero h1 {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.6;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.sy-hero h1 .sy-em { color: var(--sy-accent); }
.sy-hero-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  line-height: 1.9;
  margin-bottom: 32px;
}
.sy-hero-btn {
  display: inline-block;
  background: var(--sy-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 44px;
  border-radius: 50px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(184,92,56,0.35);
}
.sy-hero-btn:hover {
  background: var(--sy-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(184,92,56,0.45);
}
/* Fallback image if no video */
.sy-hero-image {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.sy-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   Front Page Sections
   ============================================ */
.sy-fp-section {
  padding: 80px 24px;
}
.sy-fp-section--warm {
  background: var(--sy-accent-light);
}
.sy-fp-section-label {
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--sy-primary);
  font-weight: 700;
  margin-bottom: 10px;
  text-transform: uppercase;
}
.sy-fp-section-title {
  font-size: 24px;
  font-weight: 900;
  margin-bottom: 16px;
  line-height: 1.5;
}
.sy-fp-section-lead {
  font-size: 15px;
  color: var(--sy-text-light);
  line-height: 2;
  margin-bottom: 40px;
  max-width: 640px;
}

/* ============================================
   Article List (Archive / Index)
   ============================================ */
.sy-article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.sy-article-card {
  background: #fff;
  border-radius: var(--sy-radius);
  overflow: hidden;
  box-shadow: 0 1px 8px rgba(0,0,0,0.05);
  transition: box-shadow 0.3s, transform 0.3s;
}
.sy-article-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  transform: translateY(-3px);
}
.sy-article-card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--sy-accent-light);
}
.sy-article-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.sy-article-card:hover .sy-article-card-thumb img {
  transform: scale(1.05);
}
.sy-article-card-body { padding: 20px; }
.sy-article-card-cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--sy-primary);
  background: rgba(184,92,56,0.08);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.sy-article-card-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 10px;
}
.sy-article-card-title a { color: var(--sy-text); text-decoration: none; }
.sy-article-card-title a:hover { color: var(--sy-primary); }
.sy-article-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--sy-text-light);
}
.sy-article-card-meta time { display: flex; align-items: center; gap: 4px; }

/* Archive link */
.sy-article-more {
  text-align: center;
  margin-top: 36px;
}
.sy-article-more-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 700;
  color: var(--sy-primary);
  text-decoration: none;
  padding: 14px 40px;
  border: 2px solid var(--sy-primary);
  border-radius: 50px;
  transition: all 0.2s;
  letter-spacing: 0.5px;
}
.sy-article-more-link:hover {
  background: var(--sy-primary);
  color: #fff;
}

/* ============================================
   Single Post
   ============================================ */
.sy-single-header {
  padding: 48px 24px 32px;
  text-align: center;
}
.sy-single-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--sy-primary);
  padding: 4px 14px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.sy-single-title {
  font-size: 26px;
  font-weight: 900;
  line-height: 1.6;
  margin-bottom: 16px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.sy-single-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--sy-text-light);
  margin-bottom: 8px;
}
/* Author & Supervisor boxes */
.sy-author-box,
.sy-supervisor-box {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--sy-accent-light);
  border-radius: var(--sy-radius);
  padding: 20px;
  margin-bottom: 20px;
}
.sy-supervisor-box {
  border-left: 3px solid var(--sy-accent);
}
.sy-author-box-avatar,
.sy-supervisor-box-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--sy-border);
}
.sy-author-box-avatar img,
.sy-supervisor-box-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.sy-author-box-label,
.sy-supervisor-box-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--sy-primary);
  margin-bottom: 2px;
}
.sy-author-box-name,
.sy-supervisor-box-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}
.sy-author-box-desc,
.sy-supervisor-box-desc {
  font-size: 13px;
  color: var(--sy-text-light);
  line-height: 1.7;
}

/* ============================================
   Post Content
   ============================================ */
.sy-post-content {
  max-width: var(--sy-content-width);
  margin: 0 auto;
  padding: 0 24px 60px;
  font-size: 16px;
  line-height: 2;
}
.sy-post-content h2 {
  font-size: 22px;
  font-weight: 900;
  margin: 48px 0 20px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--sy-primary);
}
.sy-post-content h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--sy-accent);
}
.sy-post-content h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 28px 0 12px;
}
.sy-post-content p { margin-bottom: 24px; }
.sy-post-content ul, .sy-post-content ol {
  margin: 0 0 24px 24px;
}
.sy-post-content li { margin-bottom: 8px; }
.sy-post-content blockquote {
  background: var(--sy-accent-light);
  border-left: 4px solid var(--sy-accent);
  padding: 20px 24px;
  margin: 24px 0;
  font-style: normal;
  color: var(--sy-text-light);
}
.sy-post-content img {
  border-radius: var(--sy-radius);
  margin: 24px 0;
}
.sy-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.sy-post-content th,
.sy-post-content td {
  padding: 12px 16px;
  border: 1px solid var(--sy-border);
  text-align: left;
  font-size: 14px;
}
.sy-post-content th {
  background: var(--sy-accent-light);
  font-weight: 700;
}

/* ============================================
   CTA Block (in-article & bottom)
   ============================================ */
.sy-cta-block {
  background: linear-gradient(135deg, var(--sy-secondary), #3D2518);
  border-radius: 12px;
  padding: 36px 28px;
  text-align: center;
  color: #fff;
  margin: 40px 0;
}
.sy-cta-block-title {
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 12px;
  color: #fff;
}
.sy-cta-block-text {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.9;
  margin-bottom: 24px;
}
.sy-cta-btn {
  display: inline-block;
  background: var(--sy-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 40px;
  border-radius: 50px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 4px 16px rgba(184,92,56,0.3);
}
.sy-cta-btn:hover {
  background: var(--sy-primary-dark);
  color: #fff;
  transform: translateY(-2px);
}
.sy-cta-block-note {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  margin-top: 16px;
}

/* ============================================
   AIO Description Box
   ============================================ */
.sy-aio-box {
  background: var(--sy-accent-light);
  border: 1px solid var(--sy-border);
  border-radius: var(--sy-radius);
  padding: 24px;
  margin-bottom: 32px;
}
.sy-aio-box-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--sy-secondary);
}
.sy-aio-box-text {
  font-size: 14px;
  line-height: 1.9;
  color: var(--sy-text-light);
}

/* ============================================
   Sidebar
   ============================================ */
.sy-sidebar .widget {
  margin-bottom: 32px;
}
.sy-sidebar .widget-title {
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--sy-primary);
  margin-bottom: 16px;
}

/* ============================================
   Footer
   ============================================ */
.sy-footer {
  background: var(--sy-secondary);
  color: rgba(255,255,255,0.6);
  padding: 48px 24px 24px;
}
.sy-footer-inner {
  max-width: var(--sy-max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
}
.sy-footer-brand {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.sy-footer-desc {
  font-size: 13px;
  line-height: 1.8;
  max-width: 560px;
}
.sy-footer-nav a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  padding: 4px 0;
  text-decoration: none;
}
.sy-footer-nav a:hover { color: var(--sy-accent); }
.sy-footer-bottom {
  max-width: var(--sy-max-width);
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 12px;
}

/* ============================================
   Property Banners (Top Page)
   ============================================ */
.sy-banner-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sy-banner-card {
  position: relative;
  display: block;
  border-radius: 12px;
  overflow: hidden;
  min-height: 200px;
  text-decoration: none;
  color: #fff;
  transition: transform 0.3s, box-shadow 0.3s;
}
.sy-banner-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.15);
  color: #fff;
}
.sy-banner-card--1 { background: linear-gradient(135deg, #8E4528 0%, var(--sy-primary) 50%, #C4703E 100%); }
.sy-banner-card--2 { background: linear-gradient(135deg, var(--sy-secondary) 0%, #6B4A3A 50%, #8B6F5E 100%); }
.sy-banner-card--3 { background: linear-gradient(135deg, #2D4A3E 0%, #3D6B5A 50%, #4A8B73 100%); }
.sy-banner-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  transition: opacity 0.3s;
}
.sy-banner-card:hover .sy-banner-card-bg { opacity: 0.4; }
.sy-banner-card-content {
  position: relative;
  z-index: 2;
  padding: 28px 24px;
}
.sy-banner-card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.sy-banner-card-title {
  font-size: 19px;
  font-weight: 900;
  margin-bottom: 8px;
  line-height: 1.4;
}
.sy-banner-card-desc {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  margin-bottom: 14px;
}
.sy-banner-card-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--sy-accent);
  letter-spacing: 0.5px;
}

/* ============================================
   Seminar Cards (Top Page)
   ============================================ */
.sy-seminar-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sy-seminar-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  border-left: 4px solid var(--sy-primary);
}
.sy-seminar-card-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
  background: rgba(184,92,56,0.1);
  color: var(--sy-primary);
}
.sy-seminar-card-badge--online {
  background: rgba(45,74,62,0.1);
  color: #2D4A3E;
}
.sy-seminar-card-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--sy-text);
}
.sy-seminar-card-meta {
  font-size: 14px;
  color: var(--sy-text-light);
  margin-bottom: 6px;
  line-height: 1.6;
}
.sy-seminar-card-btn {
  display: inline-block;
  margin-top: 14px;
  background: var(--sy-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 40px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 3px 12px rgba(184,92,56,0.25);
}
.sy-seminar-card-btn:hover {
  background: var(--sy-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}

/* ============================================
   LP Template
   ============================================ */
.sy-lp-body .sy-header,
.sy-lp-body .sy-footer { display: none; }

/* LP内 MyASPフォーム共通スタイル */
.sy-lp-body .myasp-form-area,
.sy-lp-body [id*="myasp"],
.sy-lp-body .sy-lp-form-wrap {
  background: #fff !important;
  border-radius: 12px;
  padding: 28px 24px;
  max-width: 600px;
  margin: 32px auto;
}
.sy-lp-body input[type="text"],
.sy-lp-body input[type="email"],
.sy-lp-body input[type="tel"],
.sy-lp-body select,
.sy-lp-body textarea {
  width: 100%;
  padding: 12px 14px;
  border: 2px solid #d0d0d0;
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  color: #1a1a1a;
  background: #fff;
  transition: border-color 0.2s;
}
.sy-lp-body input:focus,
.sy-lp-body select:focus,
.sy-lp-body textarea:focus {
  border-color: var(--sy-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(184,92,56,0.15);
}
.sy-lp-body label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 6px;
}
/* 必須バッジ */
.sy-lp-body .sy-required,
.sy-lp-body .required,
.sy-lp-body [class*="required"] {
  color: #D32F2F;
  font-weight: 700;
  font-size: 12px;
}
.sy-lp-body .sy-required-badge {
  display: inline-block;
  background: #D32F2F;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}
/* MyASP送信ボタン上書き */
.sy-lp-body input[type="submit"],
.sy-lp-body button[type="submit"] {
  display: block;
  width: 100%;
  background: var(--sy-primary);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  padding: 16px;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  margin-top: 20px;
  transition: background 0.2s;
  box-shadow: 0 4px 16px rgba(184,92,56,0.3);
}
.sy-lp-body input[type="submit"]:hover,
.sy-lp-body button[type="submit"]:hover {
  background: var(--sy-primary-dark);
}

/* ============================================
   Pagination
   ============================================ */
.sy-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 40px 0;
}
.sy-pagination a,
.sy-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}
.sy-pagination a {
  background: #fff;
  color: var(--sy-text);
  border: 1px solid var(--sy-border);
}
.sy-pagination a:hover {
  background: var(--sy-primary);
  color: #fff;
  border-color: var(--sy-primary);
}
.sy-pagination .current {
  background: var(--sy-primary);
  color: #fff;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) and (min-width: 769px) {
  .sy-article-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .sy-header-inner { height: 60px; }
  .sy-nav { display: none; }
  .sy-nav.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--sy-bg);
    padding: 32px 24px;
    gap: 20px;
    z-index: 999;
    animation: sySlideDown 0.3s ease;
  }
  .sy-menu-toggle { display: block; }

  .sy-hero { min-height: 90vh; }
  .sy-hero h1 { font-size: 24px; }
  .sy-hero-video--desktop { display: none; }
  .sy-hero-video--mobile { display: block; }

  .sy-fp-section { padding: 56px 18px; }
  .sy-fp-section-title { font-size: 20px; }
  .sy-article-grid { grid-template-columns: 1fr; }
  .sy-article-card--pc-only { display: none; }

  .sy-single-title { font-size: 21px; }
  .sy-post-content { padding: 0 18px 48px; }
  .sy-post-content h2 { font-size: 19px; }

  .sy-author-box,
  .sy-supervisor-box {
    flex-direction: column;
    text-align: center;
  }

  .sy-footer-inner { flex-direction: column; }
}

@keyframes sySlideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   Utility
   ============================================ */
.sp-only { display: none; }
@media (max-width: 600px) {
  .sp-only { display: block; }
}
.pc-only { display: block; }
@media (max-width: 600px) {
  .pc-only { display: none; }
}