/* ============================================================
   大象盒子 — Global CSS
   迷你倉儲 × 第三空間
   ============================================================ */

:root {
    --blue:      #00BFFF;
    --blue-dark: #007FCC;
    --dark:      #0D1117;
    --dark2:     #161B22;
    --dark3:     #21262D;
    --white:     #FFFFFF;
    --gray:      #F4F6F8;
    --text:      #1A1A2E;
    --text-mid:  #4A5568;
    --text-light:#8892A0;
    --font:      'Noto Sans TC', 'Helvetica Neue', sans-serif;
    --nav-h:     72px;
    --container: 1200px;
    --ease:      0.25s ease;
}

*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img  { max-width: 100%; height: auto; display: block; }
a    { color: inherit; text-decoration: none; }
ul   { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ── NAVBAR ── */
.site-header { position: sticky; top: 0; z-index: 1000; background-color: var(--dark); border-bottom: 1px solid rgba(0,191,255,0.12); }
.navbar { height: var(--nav-h); }
.nav-container { max-width: var(--container); margin: 0 auto; padding: 0 24px; height: 100%; display: flex; align-items: center; justify-content: space-between; }

.logo-link { display: flex; align-items: center; gap: 10px; }
.logo-elephant { font-size: 1.6rem; line-height: 1; }
.logo-text-wrap { display: flex; flex-direction: column; }
.logo-zh { font-size: 1rem; font-weight: 700; color: var(--white); letter-spacing: 0.04em; line-height: 1.2; }
.logo-en { font-size: 0.55rem; letter-spacing: 0.15em; color: var(--blue); text-transform: uppercase; }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu li a { padding: 8px 14px; font-size: 0.88rem; color: rgba(255,255,255,0.7); transition: color var(--ease); white-space: nowrap; }
.nav-menu li a:hover { color: var(--blue); }

.nav-cta-btn { display: inline-block; padding: 10px 24px; background-color: var(--blue); color: var(--dark); font-size: 0.88rem; font-weight: 700; letter-spacing: 0.04em; border-radius: 4px; transition: all var(--ease); white-space: nowrap; margin-left: 8px; }
.nav-cta-btn:hover { background-color: #33CFFF; transform: translateY(-1px); }

.nav-menu-wrap { display: flex; align-items: center; }

.hamburger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 34px; height: 34px; background: none; border: none; cursor: pointer; padding: 3px; }
.hamburger-line { display: block; width: 100%; height: 2px; background-color: var(--blue); transition: all var(--ease); }
.hamburger.is-active .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-active .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger.is-active .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── HERO ── */
.hero-section { position: relative; min-height: 92vh; display: flex; align-items: center; background-color: var(--dark); background-image: radial-gradient(ellipse at 20% 50%, rgba(0,191,255,0.08) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(0,127,204,0.06) 0%, transparent 50%); overflow: hidden; }
.hero-bg-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,191,255,0.04) 0%, transparent 50%); pointer-events: none; }

.hero-content { position: relative; z-index: 2; max-width: var(--container); margin: 0 auto; padding: 80px 24px; width: 100%; }
.hero-eyebrow { font-size: 0.8rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--blue); margin-bottom: 20px; }
.hero-title { font-size: clamp(2rem, 5vw, 3.8rem); font-weight: 700; color: var(--white); line-height: 1.25; letter-spacing: 0.02em; margin-bottom: 20px; }
.hero-sub { font-size: 1rem; color: rgba(255,255,255,0.5); letter-spacing: 0.08em; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary-hero { display: inline-block; padding: 15px 40px; background-color: var(--blue); color: var(--dark); font-size: 0.95rem; font-weight: 700; letter-spacing: 0.06em; border-radius: 4px; transition: all var(--ease); }
.btn-primary-hero:hover { background-color: #33CFFF; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,191,255,0.3); }

.btn-ghost-hero { display: inline-block; padding: 14px 40px; border: 1.5px solid rgba(0,191,255,0.4); color: var(--blue); font-size: 0.95rem; letter-spacing: 0.06em; border-radius: 4px; transition: all var(--ease); }
.btn-ghost-hero:hover { border-color: var(--blue); background-color: rgba(0,191,255,0.08); }

.hero-badge { position: absolute; top: 40px; right: 40px; width: 90px; height: 90px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), #007FCC); display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--white); box-shadow: 0 0 30px rgba(0,191,255,0.35); animation: pulse 2.5s ease-in-out infinite; }
.badge-num { font-size: 2rem; font-weight: 700; line-height: 1; }
.badge-text { font-size: 0.6rem; line-height: 1.4; text-align: center; }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.06); box-shadow: 0 0 45px rgba(0,191,255,0.55); } }

/* ── SHARED ── */
.section-label { display: inline-block; font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--blue); margin-bottom: 12px; }
.section-label.light { color: rgba(0,191,255,0.75); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-title-light { font-size: 2rem; font-weight: 700; color: var(--white); letter-spacing: 0.04em; }

.btn-primary { display: inline-block; padding: 13px 36px; background-color: var(--blue); color: var(--dark); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.06em; border-radius: 4px; transition: all var(--ease); }
.btn-primary:hover { background-color: #33CFFF; transform: translateY(-1px); }

/* ── INTRO ── */
.intro-section { padding: 96px 0; background-color: var(--white); }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.intro-text h2 { font-size: 2.2rem; font-weight: 700; color: var(--text); line-height: 1.3; margin-bottom: 12px; }
.intro-rule { width: 48px; height: 3px; background: linear-gradient(90deg, var(--blue), var(--blue-dark)); margin-bottom: 24px; border-radius: 2px; }
.intro-text p { font-size: 1rem; color: var(--text-mid); line-height: 1.85; margin-bottom: 16px; }
.intro-text p:last-of-type { margin-bottom: 32px; }
.intro-image { aspect-ratio: 4/3; overflow: hidden; }
.intro-img-placeholder { width: 100%; height: 100%; min-height: 300px; background: linear-gradient(135deg, #E8F4FF, #CCE8FF); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; color: var(--blue-dark); opacity: 0.6; }

/* ── FEATURES ── */
.features-section { padding: 80px 0; background-color: var(--dark); }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card { background-color: var(--dark2); border: 1px solid rgba(0,191,255,0.1); padding: 28px 20px; border-radius: 8px; transition: border-color var(--ease), transform var(--ease); text-align: center; }
.feature-card:hover { border-color: var(--blue); transform: translateY(-4px); }
.feature-icon { font-size: 2rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.feature-card p  { font-size: 0.8rem; color: var(--text-light); line-height: 1.65; }

/* ── USE CASES ── */
.usecases-section { padding: 80px 0; background-color: var(--gray); }
.usecases-section .section-header { text-align: center; margin-bottom: 48px; }
.usecases-section h2 { font-size: 2rem; font-weight: 700; color: var(--text); }
.usecases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.usecase-card { background-color: var(--white); border-radius: 12px; overflow: hidden; box-shadow: 0 2px 16px rgba(0,0,0,0.06); transition: transform var(--ease), box-shadow var(--ease); }
.usecase-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,191,255,0.12); }
.usecase-img { height: 160px; display: flex; align-items: center; justify-content: center; font-size: 3.5rem; }
.usecase-img.family    { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.usecase-img.business  { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.usecase-img.ecommerce { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
.usecase-body { padding: 24px; }
.usecase-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.usecase-body p  { font-size: 0.87rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 16px; }
.usecase-link { font-size: 0.85rem; color: var(--blue-dark); font-weight: 600; transition: color var(--ease); }
.usecase-link:hover { color: var(--blue); }

/* ── PROMO ── */
.promo-section { padding: 80px 0; background: linear-gradient(135deg, #004C99, var(--blue-dark)); }
.promo-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.promo-badge { display: inline-block; background-color: rgba(255,255,255,0.18); color: var(--white); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em; padding: 4px 14px; border-radius: 20px; margin-bottom: 16px; border: 1px solid rgba(255,255,255,0.3); }
.promo-text h2 { font-size: 2.2rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.promo-text p  { font-size: 1rem; color: rgba(255,255,255,0.8); line-height: 1.75; margin-bottom: 32px; }
.btn-promo { display: inline-block; padding: 14px 40px; background-color: var(--white); color: var(--blue-dark); font-weight: 700; font-size: 0.95rem; letter-spacing: 0.06em; border-radius: 4px; transition: all var(--ease); }
.btn-promo:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.promo-img-placeholder { height: 280px; background: rgba(255,255,255,0.1); border: 1px dashed rgba(255,255,255,0.3); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.45); font-size: 0.9rem; }

/* ── LOCATION ── */
.location-section { padding: 80px 0; background-color: var(--white); }
.location-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.map-placeholder { height: 360px; background: var(--gray); border: 1px solid #E2E8F0; border-radius: 8px; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-mid); gap: 8px; }
.location-info h2 { font-size: 1.8rem; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.location-rule { width: 40px; height: 3px; background: var(--blue); margin-bottom: 24px; border-radius: 2px; }
.location-details { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
.location-details li { display: flex; align-items: flex-start; gap: 12px; font-size: 0.9rem; color: var(--text-mid); }
.ld-icon { font-size: 1.1rem; flex-shrink: 0; }

/* ── FOOTER ── */
.site-footer { background-color: var(--dark); }
.footer-main { padding: 64px 0; border-top: 1px solid rgba(0,191,255,0.12); }
.footer-grid { max-width: var(--container); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; }
.footer-logo-link { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-elephant { font-size: 1.4rem; }
.footer-logo-name { font-size: 1rem; font-weight: 700; color: var(--white); }
.footer-slogan { font-size: 0.85rem; color: rgba(255,255,255,0.45); margin-bottom: 20px; }
.footer-contact-info { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-info li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.82rem; color: rgba(255,255,255,0.5); }
.fc-icon { font-size: 0.9rem; flex-shrink: 0; }
.footer-col-title { font-size: 0.82rem; font-weight: 700; color: var(--blue); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 0.84rem; color: rgba(255,255,255,0.5); transition: color var(--ease); }
.footer-links a:hover { color: var(--blue); }
.footer-social { display: flex; flex-direction: column; gap: 12px; }
.social-link { display: flex; align-items: center; gap: 10px; font-size: 0.84rem; color: rgba(255,255,255,0.5); transition: color var(--ease); }
.social-link:hover { color: var(--blue); }
.si { width: 28px; height: 28px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; }
.social-link.fb .si { background-color: #1877F2; color: #fff; }
.social-link.ig .si { background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); color: #fff; }
.social-link.tk .si { background-color: #010101; color: #fff; border: 1px solid #333; }
.footer-bottom { border-top: 1px solid rgba(0,191,255,0.08); padding: 18px 0; }
.footer-bottom-inner { max-width: var(--container); margin: 0 auto; padding: 0 24px; display: flex; justify-content: space-between; font-size: 0.78rem; color: rgba(255,255,255,0.28); flex-wrap: wrap; gap: 8px; }

/* ── PAGE INNER ── */
.page-hero { background: var(--dark); padding: 80px 0 56px; }
.page-hero-title { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; color: var(--blue); }
.page-content-section { padding: 64px 0; background: var(--white); }
.page-content { max-width: 820px; color: var(--text-mid); line-height: 1.85; }
.page-content h2, .page-content h3 { color: var(--text); margin: 28px 0 14px; }
.page-content p { margin-bottom: 18px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    .intro-grid, .promo-inner, .location-grid { grid-template-columns: 1fr; gap: 40px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .usecases-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1/-1; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-menu-wrap { position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; background-color: var(--dark); border-top: 1px solid rgba(0,191,255,0.15); padding: 24px; display: none; flex-direction: column; overflow-y: auto; }
    .nav-menu-wrap.is-open { display: flex; }
    .nav-menu { flex-direction: column; align-items: stretch; gap: 0; }
    .nav-menu li a { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.06); font-size: 1rem; }
    .nav-cta-btn { margin: 20px 0 0; display: block; text-align: center; }
    .hero-badge { top: 16px; right: 16px; width: 72px; height: 72px; }
    .badge-num { font-size: 1.5rem; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-title    { font-size: 1.8rem; }
}