:root{
  --theme:#b50909;
  --theme-dark:#850707;
  --theme-deep:#4d0404;
  --theme-light:#fff4f4;
  --theme-soft:#fde5e5;
  --theme-accent:#e24949;
  --theme-hover:#9a0808;
  --theme-border:rgba(181,9,9,.24);
  --header-bg:#5f0505;
  --header-bg-2:#780606;
  --text-main:#321f1f;
  --text-muted:#755050;
  --on-theme:#ffffff;
  --on-header:#fff3f3;
  --on-dark:#fff2f2;
  --white:#ffffff;
  --shadow-soft:0 16px 38px rgba(95,5,5,.15);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;min-height:100%;overflow-x:hidden;overflow-y:auto}
body{background:var(--theme-light);color:var(--text-main);font-family:Arial,"Helvetica Neue",sans-serif;line-height:1.72}
a{color:inherit}
img{display:block;max-width:100%}
button,a{font:inherit}
.container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(1280px,calc(100% - 80px));margin-left:auto;margin-right:auto}
.section{padding:68px 0}
.section-soft{background:var(--theme-soft)}
.section-kicker,.page-label,.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border:1px solid var(--theme-border);border-radius:999px;background:var(--white);color:var(--theme-dark);font-size:13px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.section-title{font-size:clamp(30px,3vw,46px);line-height:1.16;color:var(--theme-dark);margin:14px 0 14px;font-weight:800}
.section-desc{max-width:820px;margin:0;color:var(--text-muted);font-size:17px}
.section-heading{margin-bottom:32px}
.site-header{position:sticky;top:0;width:100%;z-index:9999;background:linear-gradient(180deg,var(--header-bg) 0%,var(--header-bg-2) 100%);color:var(--on-header);box-shadow:0 8px 24px rgba(79,4,4,.22);border-bottom:1px solid var(--theme-border);overflow:visible}
.header-inner{min-height:82px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:22px}
.site-logo,.drawer-logo,.footer-logo{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.site-logo img{width:auto;height:auto;max-width:175px;max-height:64px;object-fit:contain}
.main-nav{display:flex;justify-content:center;align-items:center;gap:17px;min-width:0}
.main-nav a{position:relative;color:var(--on-header);text-decoration:none;white-space:nowrap;font-weight:700;font-size:14px;padding:30px 2px 27px}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:19px;height:2px;background:var(--theme-accent);transform:scaleX(0);transition:transform .2s ease}
.main-nav a:hover,.main-nav a.active{color:#ffd0d0}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;justify-content:flex-end}
.main-btn,.header-login{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:11px 21px;border-radius:999px;background:linear-gradient(180deg,var(--theme-accent) 0%,var(--theme) 48%,var(--theme-dark) 100%);color:var(--on-theme);text-decoration:none;font-weight:800;box-shadow:0 10px 22px rgba(76,4,4,.28);border:1px solid rgba(255,255,255,.28);white-space:nowrap;transition:transform .2s ease,filter .2s ease}
.main-btn:hover{transform:translateY(-1px);filter:brightness(1.05)}
.mobile-menu-toggle{display:none;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.1);border-radius:12px;width:44px;height:44px;padding:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}
.mobile-menu-toggle span{display:block;width:20px;height:2px;background:var(--on-header);border-radius:2px}
.hero-section{padding:64px 0 42px;background:linear-gradient(135deg,var(--theme-light) 0%,#fffafa 47%,var(--theme-soft) 100%)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(390px,.92fr);align-items:center;gap:58px;min-height:520px}
.hero-content h1{font-size:clamp(42px,4.2vw,64px);line-height:1.08;letter-spacing:-.028em;color:var(--theme-dark);margin:13px 0 22px;font-weight:800;max-width:780px}
.hero-content p{max-width:760px;font-size:18px;line-height:1.8;margin:0 0 24px;color:var(--text-main)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span,.hero-tags a{display:inline-flex;align-items:center;border-radius:999px;padding:9px 14px;background:var(--white);color:var(--theme-dark);border:1px solid var(--theme-border);font-weight:800;text-decoration:none;font-size:14px}
.hero-visual{display:flex;align-items:center;justify-content:center}
.hero-media-box{width:min(100%,520px);min-height:310px;max-height:400px;padding:32px;display:flex;align-items:center;justify-content:center;overflow:visible;border-radius:30px;background:linear-gradient(145deg,var(--white),#fff7f7);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft)}
.hero-media-box img{max-width:70%;max-height:330px;width:auto;height:auto;object-fit:contain;opacity:1}
.info-section{padding:32px 0 50px}
.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.info-card,.card,.zone-card,.feature-card,.category-card,.faq-item,.notice,.visual-card,.feedback-card,.topic-card{background:var(--white);color:var(--text-main);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft);border-radius:24px;min-height:auto;height:auto}
.info-card{padding:25px;position:relative;overflow:visible}
.info-card::before,.category-card::before,.topic-card::before{content:"";display:block;width:48px;height:4px;border-radius:999px;background:linear-gradient(90deg,var(--theme),var(--theme-accent));margin-bottom:15px}
.info-card .number,.category-card .number{font-size:13px;font-weight:900;color:var(--theme)}
.info-card h2{font-size:20px;line-height:1.25;color:var(--theme-dark);margin:9px 0 10px}
.info-card p{margin:0;color:var(--text-muted);font-size:15px}
.category-section{padding:0 0 60px}
.category-pills{display:flex;flex-wrap:wrap;gap:11px;justify-content:center}
.category-pills a{display:inline-flex;align-items:center;justify-content:center;padding:10px 17px;border-radius:999px;background:var(--white);color:var(--theme-dark);border:1px solid var(--theme-border);font-weight:800;text-decoration:none;transition:.2s ease}
.category-pills a:hover{background:linear-gradient(180deg,var(--theme-accent),var(--theme));color:var(--on-theme);border-color:var(--theme)}
.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.category-card{padding:25px}
.category-card h3{font-size:21px;color:var(--theme-dark);margin:8px 0 10px}
.category-card p{margin:0 0 16px;color:var(--text-muted)}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--theme-dark);font-weight:800;text-decoration:none;border-bottom:1px solid var(--theme-border)}
.text-link:hover{color:var(--theme-hover)}
.service-grid,.feature-grid,.topic-grid,.feedback-grid,.faq-grid,.content-wall{display:grid;gap:20px}
.service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.feedback-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.faq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.content-wall{grid-template-columns:repeat(3,minmax(0,1fr))}
.card,.feature-card,.topic-card,.feedback-card,.faq-item{padding:27px}
.card h3,.feature-card h3,.topic-card h3,.feedback-card h3,.faq-item h3{color:var(--theme-dark);font-size:20px;line-height:1.3;margin:0 0 10px}
.card p,.feature-card p,.topic-card p,.feedback-card p,.faq-item p{margin:0;color:var(--text-muted)}
.split-section{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(340px,.94fr);gap:46px;align-items:center}
.split-section.reverse .media-box{order:-1}
.copy-block p{margin:0 0 16px}
.copy-block ul,.article-main ul,.notice ul{margin:18px 0 0;padding-left:22px}
.copy-block li,.article-main li,.notice li{margin:8px 0}
.media-box,.app-visual,.card-media{display:flex;align-items:center;justify-content:center;overflow:visible;border-radius:28px;background:var(--white);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft);padding:26px;min-height:260px}
.media-box img,.app-visual img,.card-media img{max-width:100%;max-height:360px;width:auto;height:auto;object-fit:contain}
.app-panel{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);gap:44px;align-items:center;padding:40px;border-radius:30px;background:linear-gradient(135deg,var(--theme-deep),var(--header-bg-2));color:var(--on-dark);box-shadow:var(--shadow-soft)}
.app-panel h2{font-size:clamp(30px,3vw,44px);margin:10px 0 15px}
.app-panel p{color:#ffe1e1}
.app-panel .app-visual{background:rgba(255,255,255,.96);min-height:280px}
.notice{padding:28px;background:linear-gradient(135deg,#fffafa,var(--theme-soft));border-left:5px solid var(--theme)}
.notice h2,.notice h3{color:var(--theme-dark);margin:0 0 10px}
.notice p{margin:0 0 10px}
.quote-mark{font-size:34px;line-height:1;color:var(--theme);font-family:Georgia,serif}
.page-hero{padding:58px 0 42px;background:linear-gradient(135deg,var(--theme-light),var(--theme-soft))}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(330px,.95fr);gap:48px;align-items:center}
.page-hero h1{font-size:clamp(39px,4vw,58px);line-height:1.09;color:var(--theme-dark);margin:13px 0 18px}
.page-hero p{font-size:17px;line-height:1.82;margin:0;color:var(--text-main)}
.page-hero .media-box{min-height:260px}
.page-hero .media-box img{max-height:300px}
.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:start}
.article-main{min-width:0}
.article-section{margin-bottom:28px;padding:30px;border-radius:24px;background:var(--white);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft)}
.article-section h2{font-size:29px;line-height:1.23;color:var(--theme-dark);margin:0 0 16px}
.article-section p{margin:0 0 16px}
.article-section p:last-child{margin-bottom:0}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:20px}
.point-card{padding:20px;border-radius:19px;background:var(--theme-light);border:1px solid var(--theme-border)}
.point-card h3{font-size:18px;line-height:1.3;color:var(--theme-dark);margin:0 0 8px}
.point-card p{font-size:15px;margin:0;color:var(--text-muted)}
.side-stack{position:sticky;top:104px;display:grid;gap:18px}
.side-card{padding:23px;border-radius:22px;background:var(--white);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft)}
.side-card h2,.side-card h3{font-size:20px;color:var(--theme-dark);margin:0 0 12px}
.side-card a{display:block;padding:8px 0;color:var(--text-main);text-decoration:none;border-bottom:1px solid rgba(181,9,9,.15)}
.side-card a:last-child{border-bottom:0}
.side-card a:hover{color:var(--theme)}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin-top:18px}
.check-item{padding:16px 17px;border-radius:17px;background:var(--theme-light);border:1px solid var(--theme-border)}
.check-item strong{display:block;color:var(--theme-dark);margin-bottom:5px}
.related-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.related-nav a{display:inline-flex;padding:9px 14px;border-radius:999px;border:1px solid var(--theme-border);background:var(--white);color:var(--theme-dark);font-weight:800;text-decoration:none}
.faq-list{display:grid;gap:14px}
.faq-item h3{font-size:18px}
.footer{background:linear-gradient(180deg,var(--theme-deep),#350202);color:var(--on-dark);padding:54px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px}
.footer h2{font-size:18px;margin:0 0 14px;color:#ffcaca}
.footer a{display:block;color:var(--on-dark);text-decoration:none;padding:5px 0;opacity:.92}
.footer a:hover{opacity:1;color:#ffcaca}
.footer-logo{justify-content:flex-start;margin-bottom:15px}
.footer-logo img{max-width:180px;max-height:64px;width:auto;height:auto;object-fit:contain}
.footer-brand p{margin:0;color:#f8dede}
.footer-notice{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);display:grid;grid-template-columns:auto 1fr;gap:15px;align-items:start}
.footer-notice strong{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:var(--theme);color:#fff;font-size:18px}
.footer-notice p{margin:0;color:#f8dede}
.mobile-drawer{position:fixed;top:0;left:0;width:82%;max-width:320px;height:100vh;transform:translateX(-100%);transition:transform .28s ease;z-index:10001;background:var(--header-bg);color:var(--on-header);padding:18px;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-overlay{position:fixed;inset:0;background:rgba(49,3,3,.55);opacity:0;visibility:hidden;transition:.2s ease;z-index:10000}
.drawer-overlay.is-open{opacity:1;visibility:visible}
body.menu-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:15px;border-bottom:1px solid rgba(255,255,255,.16)}
.drawer-logo img{max-width:150px;max-height:54px;width:auto;height:auto;object-fit:contain}
.drawer-close{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:var(--on-header);width:42px;height:42px;border-radius:12px;font-size:28px;line-height:1;cursor:pointer}
.drawer-nav{display:grid;margin-top:13px}
.drawer-nav a{color:var(--on-header);text-decoration:none;padding:12px 9px;border-bottom:1px solid rgba(255,255,255,.11);font-weight:700}
.drawer-nav a.active{color:#ffd0d0}
@media (min-width:1440px){
 .container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(1360px,calc(100% - 120px))}
 .hero-inner{grid-template-columns:minmax(0,1.05fr) minmax(450px,.95fr);gap:70px}
}
@media (max-width:1180px){
 .main-nav{gap:11px}
 .main-nav a{font-size:13px}
 .site-logo img{max-width:145px}
}
@media (max-width:1023px){
 .header-inner{width:min(100% - 28px,1280px);min-height:68px;grid-template-columns:48px minmax(0,1fr) auto;gap:10px}
 .mobile-menu-toggle{display:inline-flex}
 .main-nav{display:none}
 .site-logo{justify-self:center}
 .site-logo img{max-width:min(145px,38vw);max-height:54px}
 .header-actions{justify-self:end}
 .header-actions .main-btn{padding:9px 14px;font-size:13px}
 .hero-section{padding:46px 0 34px}
 .hero-inner,.page-hero-inner,.split-section,.app-panel,.page-layout{grid-template-columns:1fr;gap:30px}
 .hero-inner{min-height:auto}
 .hero-content h1{font-size:clamp(36px,7.5vw,52px)}
 .hero-media-box{max-width:100%;min-height:auto;padding:24px}
 .hero-media-box img{max-height:280px}
 .info-grid,.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .service-grid,.feature-grid,.topic-grid,.content-wall{grid-template-columns:repeat(2,minmax(0,1fr))}
 .side-stack{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
 .split-section.reverse .media-box{order:0}
 .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
 .container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(calc(100% - 32px),1280px)}
 .section{padding:50px 0}
 .header-inner{width:min(calc(100% - 20px),1280px);grid-template-columns:44px minmax(0,1fr) auto;gap:8px}
 .site-logo img{max-width:min(118px,34vw);max-height:46px}
 .header-actions .main-btn{min-height:39px;padding:8px 11px;font-size:12px}
 .hero-content h1{font-size:clamp(33px,10vw,46px)}
 .hero-content p{font-size:16px}
 .hero-media-box img{max-width:82%;max-height:235px}
 .info-grid,.category-grid,.service-grid,.feature-grid,.topic-grid,.feedback-grid,.faq-grid,.content-wall,.point-grid,.check-list,.side-stack,.footer-grid{grid-template-columns:1fr}
 .app-panel{padding:26px}
 .article-section{padding:23px}
 .page-hero{padding:42px 0 32px}
 .page-hero h1{font-size:clamp(34px,9vw,45px)}
 .footer-notice{grid-template-columns:1fr}
}
@media (max-width:390px){
 .header-inner{width:min(calc(100% - 16px),1280px)}
 .site-logo img{max-width:min(104px,32vw)}
 .header-actions .main-btn{padding:7px 9px;font-size:11px}
}

/* MOBILE_FIX_TYPE_A_20260930: restore mobile menu icon + narrow-screen hardening */
@media (max-width: 1023px) {
  html, body { width: 100%; max-width: 100%; overflow-x: clip; }
  .header-inner, .header-inner > *, .hero-inner > *, .page-hero-inner > *, .split > * { min-width: 0; }
  .mobile-menu-toggle {
    display: inline-flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    width: 44px !important;
    height: 44px !important;
    min-width: 44px !important;
    padding: 8px !important;
    position: relative;
    z-index: 2;
    opacity: 1 !important;
    visibility: visible !important;
    color: var(--on-header, #fff) !important;
    -webkit-appearance: none;
    appearance: none;
  }
  .mobile-menu-toggle span {
    display: block !important;
    flex: 0 0 2px !important;
    width: 24px !important;
    height: 2px !important;
    min-height: 2px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 3px !important;
    background: var(--on-header, #fff) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}
@media (max-width: 390px) {
  .header-inner { width: calc(100% - 16px) !important; gap: 6px !important; }
  .site-logo { min-width: 0; overflow: hidden; }
  .site-logo img { max-width: min(116px, 35vw) !important; }
  .header-actions .main-btn { max-width: 94px; min-width: 0; padding-inline: 8px !important; }
}

/* CHATGPT_HAMBURGER_SPAN_FIX_V6_START */
@media (max-width: 767px) {
  .mobile-menu-toggle {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 5px !important;
  }

  .mobile-menu-toggle::before,
  .mobile-menu-toggle::after {
    content: none !important;
    display: none !important;
    box-shadow: none !important;
  }

  .mobile-menu-toggle span {
    display: block !important;
    width: 20px !important;
    min-width: 20px !important;
    max-width: 20px !important;
    height: 2px !important;
    min-height: 2px !important;
    max-height: 2px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 2px !important;
    background: var(--on-header, #fff) !important;
    opacity: 1 !important;
    visibility: visible !important;
    position: static !important;
    transform: none !important;
    box-shadow: none !important;
    flex: 0 0 2px !important;
  }
}
/* CHATGPT_HAMBURGER_SPAN_FIX_V6_END */