/* ==========================================
   大鱼寿司 2026 招商加盟 · 网页站点版
   BIG FISH SUSHI Franchise Website
   Design: Red-White-Black VIS System
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* === CSS Variables === */
:root {
  --brand-red: #C81E2E;
  --brand-red-dark: #A01826;
  --brand-black: #0D0D0D;
  --white: #FFFFFF;
  --off-white: #F9F8F6;
  --warm-light: #FFF8F5;
  --gray-100: #F0F0F0;
  --gray-200: #E0E0E0;
  --gray-300: #BBBBBB;
  --gray-400: #999999;
  --gray-500: #888888;
  --gray-600: #666666;
  --gray-700: #444444;
  --gray-800: #222222;
  --max-width: 1100px;
  --header-height: 64px;
  --radius: 12px;
  --shadow: 0 2px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
}

/* === Reset === */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; scroll-padding-top:var(--header-height); }
body {
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--white); color:var(--brand-black);
  line-height:1.7; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img { max-width:100%; height:auto; display:block; }
a { color:inherit; text-decoration:none; }
ul { list-style:none; }

/* === Header / Nav === */
.header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:rgba(255,255,255,0.95); backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(0,0,0,0.06);
  height:var(--header-height);
  transition:var(--transition);
}
.header.scrolled { box-shadow:0 2px 20px rgba(0,0,0,0.08); }
.header-inner {
  max-width:var(--max-width); height:100%;
  margin:0 auto; padding:0 24px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo {
  font-size:18px; font-weight:900; color:var(--brand-red);
  letter-spacing:-0.5px; white-space:nowrap;
}
.logo span { font-weight:300; font-size:11px; letter-spacing:2px; color:var(--gray-500); margin-left:8px; }
.nav-links { display:flex; gap:24px; align-items:center; }
.nav-links a {
  font-size:13px; font-weight:500; color:var(--gray-600);
  transition:var(--transition); white-space:nowrap;
}
.nav-links a:hover { color:var(--brand-red); }
.nav-cta {
  background:var(--brand-red); color:var(--white) !important;
  padding:8px 18px; border-radius:20px; font-weight:700 !important;
  transition:var(--transition);
}
.nav-cta:hover { background:var(--brand-red-dark) !important; color:var(--white) !important; }
/* Mobile menu */
.menu-toggle {
  display:none; background:none; border:none; cursor:pointer;
  font-size:24px; color:var(--brand-black); padding:4px;
}

/* === Sections === */
.section {
  padding:80px 24px;
  position:relative;
  overflow:hidden;
}
.section-inner {
  max-width:var(--max-width); margin:0 auto;
}
.section-tag {
  display:inline-block; font-size:11px; font-weight:700;
  letter-spacing:3px; text-transform:uppercase;
  color:var(--brand-red); margin-bottom:12px;
}
.section-title {
  font-size:clamp(26px,4vw,42px); font-weight:900;
  line-height:1.2; letter-spacing:-1px; margin-bottom:12px;
}
.section-title .red { color:var(--brand-red); }
.section-desc {
  font-size:16px; color:var(--gray-600); line-height:1.8;
  max-width:640px; margin-bottom:0;
}
.accent-line {
  width:40px; height:3px; background:var(--brand-red);
  border-radius:2px; margin:16px 0;
}

/* === Backgrounds === */
.bg-red { background:var(--brand-red); color:var(--white); }
.bg-dark { background:var(--brand-black); color:var(--white); }
.bg-warm { background:var(--off-white); }
.bg-light { background:var(--warm-light); }
.bg-red .section-tag,
.bg-dark .section-tag { color:rgba(255,255,255,0.5); }
.bg-red .accent-line,
.bg-dark .accent-line { background:rgba(255,255,255,0.4); }
.bg-red .section-desc,
.bg-dark .section-desc { color:rgba(255,255,255,0.65); }

/* === Hero === */
.hero-section {
  min-height:100vh; display:flex; align-items:center;
  background:var(--brand-red); color:var(--white);
  padding:calc(var(--header-height) + 40px) 24px 60px;
  position:relative; overflow:hidden;
}
.hero-bg-img {
  position:absolute; top:0; right:0; width:48%; height:100%;
  object-fit:cover; opacity:0.25;
  mask-image:linear-gradient(to left, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
  -webkit-mask-image:linear-gradient(to left, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
}
.hero-pattern {
  position:absolute; inset:0; pointer-events:none; opacity:0.06;
  background-image:
    radial-gradient(circle at 20% 30%, #fff 1px, transparent 1px),
    radial-gradient(circle at 60% 70%, #fff 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, #fff 1px, transparent 1px);
  background-size:100px 100px;
}
.hero-watermark {
  position:absolute; font-size:clamp(120px,18vw,260px); font-weight:900;
  opacity:0.04; color:#fff; letter-spacing:-6px;
  top:50%; left:50%; transform:translate(-50%,-50%);
  white-space:nowrap; pointer-events:none; user-select:none;
}
.hero-inner {
  max-width:var(--max-width); width:100%; margin:0 auto;
  display:flex; align-items:center; gap:48px; position:relative; z-index:1;
}
.hero-text { flex:1; }
.hero-badge {
  display:inline-block; background:rgba(255,255,255,0.12);
  padding:6px 16px; border-radius:20px;
  font-size:11px; letter-spacing:2px; font-weight:700; margin-bottom:24px;
}
.hero-title {
  font-size:clamp(42px,7vw,80px); font-weight:900;
  line-height:1.05; letter-spacing:-2px; margin-bottom:16px;
}
.hero-subtitle {
  font-size:clamp(18px,2.5vw,28px); font-weight:300;
  opacity:0.85; margin-bottom:32px; letter-spacing:1px;
}
.hero-btns { display:flex; gap:14px; flex-wrap:wrap; }
.btn {
  display:inline-block; padding:14px 32px; border-radius:28px;
  font-size:15px; font-weight:700; cursor:pointer;
  transition:var(--transition); text-align:center;
  border:none; white-space:nowrap;
}
.btn-primary {
  background:var(--white); color:var(--brand-red);
  box-shadow:0 4px 20px rgba(0,0,0,0.2);
}
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 6px 28px rgba(0,0,0,0.3); }
.btn-outline {
  background:transparent; color:var(--white);
  border:2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { border-color:var(--white); background:rgba(255,255,255,0.08); }
.btn-red {
  background:var(--brand-red); color:var(--white);
}
.btn-red:hover { background:var(--brand-red-dark); }
.hero-image {
  flex:0 0 42%; position:relative;
}
.hero-image img {
  border-radius:var(--radius);
  box-shadow:0 20px 60px rgba(0,0,0,0.3);
}
.hero-image::before {
  content:''; position:absolute;
  inset:-16px -16px 48px 48px;
  background:rgba(255,255,255,0.08);
  border-radius:var(--radius); z-index:-1;
}

/* === Stats Row === */
.stats-row {
  display:flex; gap:40px; margin-top:24px;
}
.stat-item {}
.stat-value { font-size:36px; font-weight:900; color:var(--brand-red); line-height:1; }
.stat-label { font-size:12px; color:var(--gray-500); margin-top:4px; }

/* === Timeline === */
.timeline-list { display:flex; flex-direction:column; gap:12px; }
.timeline-item {
  padding:14px 18px; border-left:3px solid var(--brand-red);
  background:var(--white); border-radius:0 8px 8px 0;
  box-shadow:var(--shadow); font-size:14px;
}
.timeline-item .year { font-weight:900; color:var(--brand-red); margin-right:8px; }

/* === Comparison Grid === */
.compare-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:0;
  max-width:700px; margin:24px auto 0; border-radius:var(--radius); overflow:hidden;
}
.compare-col {
  padding:36px 28px;
}
.compare-col:first-child { background:var(--gray-100); }
.compare-col:last-child { background:var(--brand-red); color:var(--white); }
.compare-col h4 { font-size:14px; font-weight:700; margin-bottom:16px; }
.compare-col ul li { font-size:13px; line-height:2.5; }

/* === Product Showcase === */
.product-showcase {
  display:flex; align-items:center; gap:56px;
}
.product-showcase.reverse { flex-direction:row-reverse; }
.product-image {
  flex:0 0 44%; position:relative;
}
.product-image img { border-radius:var(--radius); width:100%; }
.product-image::before {
  content:''; position:absolute; inset:-12px -12px 40px 40px;
  background:var(--brand-red); border-radius:var(--radius); z-index:-1; opacity:0.1;
}
.product-info { flex:1; }
.product-name { font-size:clamp(24px,3.5vw,38px); font-weight:900; margin-bottom:4px; }
.product-subtitle { font-size:16px; color:var(--gray-500); margin-bottom:12px; }
.product-desc { font-size:15px; color:var(--gray-600); line-height:1.8; margin-bottom:20px; }
.product-specs { display:flex; gap:24px; margin-bottom:16px; }
.product-spec .val { font-size:28px; font-weight:900; color:var(--brand-red); }
.product-spec .lbl { font-size:12px; color:var(--gray-500); }
.product-tags { display:flex; gap:10px; flex-wrap:wrap; }
.product-tag {
  background:var(--warm-light); padding:5px 12px;
  border-radius:6px; font-size:11px; color:var(--brand-red); font-weight:700;
}

/* === Scenario Grid === */
.scenario-grid {
  display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.scenario-card {
  background:var(--white); border-radius:var(--radius);
  overflow:hidden; box-shadow:var(--shadow);
  transition:var(--transition);
}
.scenario-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.scenario-card.highlight { border:2px solid var(--brand-red); }
.scenario-card img { width:100%; height:280px; object-fit:cover; }
.scenario-card .body { padding:16px; }
.scenario-card h4 { font-size:15px; margin-bottom:4px; }
.scenario-card p { font-size:12px; color:var(--gray-500); }
.scenario-card.highlight h4 { color:var(--brand-red); }

/* === Scene Cards === */
.scene-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.scene-card {
  position:relative; border-radius:var(--radius); overflow:hidden;
}
.scene-card img { width:100%; height:380px; object-fit:cover; }
.scene-card .overlay {
  position:absolute; bottom:0; left:0; right:0;
  background:linear-gradient(0deg, rgba(0,0,0,0.6), transparent 60%);
  color:var(--white); padding:24px 12px 12px;
}
.scene-card .overlay h5 { font-size:15px; margin-bottom:2px; }
.scene-card .overlay small { font-size:11px; opacity:0.75; display:block; }

/* === Card Grids === */
.card-grid { display:grid; gap:16px; }
.card-3 { grid-template-columns:repeat(3,1fr); }
.card-2 { grid-template-columns:repeat(2,1fr); }
.card-4 { grid-template-columns:repeat(4,1fr); }
.card {
  background:var(--white); border-radius:var(--radius);
  padding:24px 20px; box-shadow:var(--shadow);
  border:1px solid rgba(0,0,0,0.04);
}
.card-icon {
  width:40px; height:40px; border-radius:8px;
  background:rgba(200,30,46,0.07); display:flex;
  align-items:center; justify-content:center;
  font-size:15px; font-weight:700; color:var(--brand-red);
  margin-bottom:12px;
}
.card h4 { font-size:15px; font-weight:700; margin-bottom:6px; }
.card p { font-size:13px; color:var(--gray-500); line-height:1.6; }
.card-accent { border-left:3px solid var(--brand-red); border-radius:0 var(--radius) var(--radius) 0; }

/* === Fee Cards === */
.fee-grid {
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px;
}
.fee-card {
  background:var(--white); border-radius:var(--radius);
  padding:28px 16px; text-align:center;
  box-shadow:var(--shadow); border:1px solid rgba(0,0,0,0.04);
  transition:var(--transition);
}
.fee-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-lg); }
.fee-amount { font-size:clamp(26px,3.5vw,38px); font-weight:900; color:var(--brand-red); margin-bottom:4px; }
.fee-label { font-size:15px; font-weight:700; margin-bottom:4px; }
.fee-note { font-size:11px; color:var(--gray-500); }

/* === Risk Box === */
.risk-box {
  background:var(--warm-light); border-left:4px solid var(--brand-red);
  border-radius:0 8px 8px 0; padding:16px 20px;
  font-size:12px; color:var(--gray-700); line-height:1.8;
  max-width:720px; margin:0 auto;
}
.risk-box strong { color:var(--brand-red); }

/* === Support Modules === */
.module-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.module {
  position:relative; padding:24px 18px 18px;
  border-left:3px solid var(--brand-red); background:var(--white);
  border-radius:0 8px 8px 0; box-shadow:var(--shadow);
}
.module .num {
  font-size:32px; font-weight:900; color:rgba(200,30,46,0.08);
  position:absolute; top:12px; right:16px; line-height:1;
}
.module h4 { font-size:14px; font-weight:700; margin-bottom:6px; }
.module p { font-size:12px; color:var(--gray-500); line-height:1.65; }

/* === Timeline Phases === */
.timeline-phases { display:flex; gap:0; }
.timeline-phase {
  flex:1; padding:24px 20px;
}
.timeline-phase + .timeline-phase { border-left:1px solid rgba(0,0,0,0.08); }
.timeline-phase h4 { font-size:14px; font-weight:700; color:var(--brand-red); margin-bottom:12px; }
.timeline-phase ul li {
  font-size:13px; color:var(--gray-700); line-height:2.2;
}
.timeline-phase ul li::before { content:'·'; color:var(--brand-red); font-weight:900; margin-right:6px; }

/* === Fit / Not Fit === */
.fit-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:24px;
}
.fit-box {
  padding:28px 24px; border-radius:var(--radius);
}
.fit-box.suitable {
  background:var(--white); border:1px solid rgba(0,0,0,0.06);
  box-shadow:var(--shadow);
}
.fit-box.not-suitable {
  background:var(--gray-100); border:1px solid rgba(0,0,0,0.05);
}
.fit-box h3 { font-size:18px; font-weight:900; margin-bottom:4px; }
.fit-box .subtitle { font-size:13px; color:var(--gray-500); margin-bottom:16px; }
.fit-box ul { margin-bottom:16px; }
.fit-box ul li {
  font-size:13px; line-height:2.3; padding-left:4px;
}
.fit-box.suitable ul li { color:var(--gray-700); }
.fit-box.suitable ul li::before { content:'✓ '; color:#4CAF50; font-weight:700; }
.fit-box.not-suitable ul li { color:var(--gray-500); }
.fit-box.not-suitable ul li::before { content:'✗ '; color:var(--gray-400); font-weight:700; }
.fit-conclusion {
  font-weight:700; font-size:13px; text-align:center;
  margin-top:8px; color:var(--brand-black);
}

/* === Process === */
.process-bar {
  display:flex; align-items:center; justify-content:center; gap:0;
  flex-wrap:wrap;
}
.process-step {
  background:var(--white); border:2px solid var(--brand-red);
  border-radius:8px; padding:16px 14px; text-align:center;
  min-width:90px; font-weight:700; color:var(--brand-red);
  font-size:13px;
}
.process-arrow { width:20px; height:2px; background:var(--brand-red); flex-shrink:0; }
.process-step.last {
  background:var(--brand-red); color:var(--white);
}

/* === FAQ === */
.faq-list { max-width:700px; }
.faq-item {
  border-bottom:1px solid rgba(0,0,0,0.06); padding:16px 0;
}
.faq-q { font-weight:700; color:var(--brand-red); font-size:14px; cursor:pointer; }
.faq-a { font-size:13px; color:var(--gray-500); margin-top:6px; line-height:1.8; }

/* === Official Channels === */
.official-grid {
  display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
}
.official-card {
  background:var(--white); border-radius:var(--radius);
  padding:24px; text-align:center; box-shadow:var(--shadow);
}
.official-card h4 { font-size:18px; font-weight:900; color:var(--brand-red); margin-bottom:4px; }
.official-card .sub { font-size:13px; font-weight:700; margin-bottom:4px; }
.official-card .note { font-size:11px; color:var(--gray-500); }

/* === Warning Box === */
.warn-box {
  background:rgba(200,30,46,0.04); border:1px solid rgba(200,30,46,0.12);
  border-radius:var(--radius); padding:18px 22px;
  font-size:12px; line-height:1.8; color:var(--gray-700);
}
.warn-box strong { color:var(--brand-red); }

/* === Footer === */
.footer-section {
  background:var(--brand-red); color:var(--white);
  padding:80px 24px 40px; text-align:center;
}
.footer-section .section-tag { color:rgba(255,255,255,0.5); }
.footer-section .section-title { font-size:clamp(28px,4vw,44px); }
.footer-section .section-desc { color:rgba(255,255,255,0.5); }
.footer-ctas {
  display:flex; gap:16px; justify-content:center; flex-wrap:wrap; margin:32px 0;
}
.footer-cta {
  background:rgba(255,255,255,0.15); backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,0.25);
  border-radius:var(--radius); padding:24px 28px; text-align:center;
  min-width:180px; transition:var(--transition); color:var(--brand-black);
}
.footer-cta:hover { background:rgba(255,255,255,0.25); }
.footer-cta .icon { color:var(--brand-red); opacity:1; }
.footer-cta h4 { color:var(--brand-black); }
.footer-cta p { color:var(--brand-red); opacity:0.8; }
.footer-cta .icon { font-size:24px; margin-bottom:8px; opacity:0.5; }
.footer-cta h4 { font-size:16px; margin-bottom:4px; }
.footer-cta p { font-size:11px; opacity:0.5; }
.footer-risk {
  max-width:560px; margin:0 auto;
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);
}
.footer-brand { margin-top:40px; }
.footer-brand h3 { font-size:22px; font-weight:900; }
.footer-brand p { font-size:12px; opacity:0.4; margin-top:4px; }

/* === Floating CTA === */
.floating-cta {
  position:fixed; bottom:24px; right:24px; z-index:999;
  display:flex; flex-direction:column; gap:10px;
}
.floating-btn {
  width:52px; height:52px; border-radius:50%;
  background:var(--brand-red); color:var(--white);
  display:flex; align-items:center; justify-content:center;
  font-size:20px; box-shadow:0 4px 20px rgba(200,30,46,0.4);
  cursor:pointer; transition:var(--transition); border:none;
  text-decoration:none;
}
.floating-btn:hover { transform:scale(1.08); }
.floating-btn.tel { background:#25D366; box-shadow:0 4px 20px rgba(37,211,102,0.4); }
.floating-label {
  position:absolute; right:60px; top:50%; transform:translateY(-50%);
  background:var(--brand-black); color:var(--white);
  padding:6px 14px; border-radius:6px; font-size:12px;
  white-space:nowrap; opacity:0; pointer-events:none;
  transition:var(--transition);
}
.floating-btn:hover .floating-label { opacity:1; }

/* === Responsive === */
@media(max-width:968px) {
  .hero-inner { flex-direction:column; text-align:center; }
  .hero-image { flex:auto; max-width:360px; }
  .hero-btns { justify-content:center; }
  .product-showcase,
  .product-showcase.reverse { flex-direction:column; gap:32px; }
  .product-image { flex:auto; max-width:400px; }
  .scenario-grid { grid-template-columns:1fr 1fr; }
  .scene-grid { grid-template-columns:1fr 1fr; }
  .card-3, .card-4 { grid-template-columns:1fr 1fr; }
  .card-2 { grid-template-columns:1fr; }
  .fee-grid { grid-template-columns:1fr 1fr; }
  .module-grid { grid-template-columns:1fr 1fr; }
  .compare-grid { grid-template-columns:1fr; }
  .timeline-phases { flex-direction:column; }
  .timeline-phase + .timeline-phase { border-left:none; border-top:1px solid rgba(0,0,0,0.08); }
  .fit-grid { grid-template-columns:1fr; }
  .official-grid { grid-template-columns:1fr; }
}

@media(max-width:640px) {
  .header-inner { padding:0 16px; }
  .nav-links { display:none; }
  .nav-links.open {
    display:flex; flex-direction:column;
    position:absolute; top:var(--header-height);
    left:0; right:0; background:rgba(255,255,255,0.98);
    backdrop-filter:blur(12px);
    padding:16px 24px; gap:12px;
    border-bottom:1px solid rgba(0,0,0,0.06);
    box-shadow:0 8px 30px rgba(0,0,0,0.08);
  }
  .menu-toggle { display:block; }
  .section { padding:56px 16px; }
  .hero-section { min-height:auto; padding-top:calc(var(--header-height) + 32px); padding-bottom:48px; }
  .hero-title { font-size:36px; }
  .scenario-grid { grid-template-columns:1fr; }
  .scene-grid { grid-template-columns:1fr; }
  .card-3, .card-4, .card-2 { grid-template-columns:1fr; }
  .fee-grid { grid-template-columns:1fr 1fr; }
  .module-grid { grid-template-columns:1fr; }
  .stats-row { gap:24px; }
  .process-bar { flex-direction:column; gap:8px; }
  .process-arrow { width:2px; height:16px; }
  .floating-cta { bottom:16px; right:16px; }
  .floating-btn { width:44px; height:44px; font-size:18px; }
}

/* === Animations === */
.fade-in {
  opacity:0; transform:translateY(24px);
  transition:opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity:1; transform:translateY(0); }

/* === Print === */
@media print {
  .header, .floating-cta, .menu-toggle { display:none !important; }
  .section { padding:24px 16px; page-break-inside:avoid; }
  .hero-section { min-height:auto; }
}