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

:root {
  /* 青舍品牌色 — 暖橙主色 + 青绿适配 */
  --orange: oklch(68% 0.16 50);         /* 主色：暖橙 */
  --orange-light: oklch(92% 0.06 55);   /* 浅暖橙 */
  --orange-pale: oklch(96% 0.03 60);    /* 极浅暖橙背景 */
  --orange-dark: oklch(42% 0.12 45);    /* 深暖橙 */

  --teal: oklch(58% 0.10 178);          /* 青绿：点缀/辅助 */
  --teal-light: oklch(90% 0.04 178);    /* 浅青绿 */
  --teal-dark: oklch(35% 0.06 178);     /* 深青绿 */

  --charcoal: oklch(18% 0.02 50);       /* 深炭文字（偏暖） */
  --slate: oklch(48% 0.02 50);          /* 灰文字 */
  --mist: oklch(95% 0.01 60);           /* 雾暖背景 */
  --white: oklch(99% 0.003 80);         /* 暖白 */

  --accent: var(--teal);                /* 点缀：青绿 */

  /* 字体 */
  --serif: 'Noto Serif SC', 'Songti SC', serif;
  --sans: 'Noto Sans SC', 'PingFang SC', sans-serif;

  /* 间距节奏 */
  --sp-xs: clamp(0.5rem, 1vw, 0.75rem);
  --sp-sm: clamp(1rem, 2vw, 1.5rem);
  --sp-md: clamp(2rem, 4vw, 3rem);
  --sp-lg: clamp(3rem, 6vw, 5rem);
  --sp-xl: clamp(5rem, 10vw, 8rem);

  /* 容器 */
  --container: min(1200px, 90vw);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--sans);
  color: var(--charcoal);
  background: var(--white);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}

/* ==================== SCROLL REVEAL ==================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ==================== LAYOUT ==================== */
.container {
  width: var(--container);
  margin: 0 auto;
}

section {
  padding: var(--sp-xl) 0;
}

/* ==================== NAVIGATION ==================== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

nav.scrolled {
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--container);
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal-dark);
  letter-spacing: 0.08em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}



.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--slate);
  text-decoration: none;
  letter-spacing: 0.04em;
  position: relative;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--teal);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a:hover {
  color: var(--teal-dark);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links li .nav-cta {
  font-size: 0.8rem;
  font-weight: 500;
  color: #ffffff !important;
  background: var(--teal);
  padding: 0.6rem 1.4rem;
  border-radius: 2px;
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: all 0.3s;
}

.nav-links li .nav-cta:hover {
  background: var(--teal-dark);
  color: #ffffff !important;
  transform: translateY(-1px);
}

/* Mobile menu */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--charcoal);
  margin: 5px 0;
  transition: all 0.3s;
}

/* ==================== HERO ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 5rem;
  background: var(--mist);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse at center, var(--teal-light) 0%, transparent 70%);
  opacity: 0.6;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 40%;
  height: 60%;
  background: radial-gradient(ellipse at center, var(--orange-light) 0%, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--sp-md);
  padding: 0.6rem 1.5rem;
  border: 1px solid color-mix(in oklch, var(--teal) 30%, transparent);
  border-radius: 2rem;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--teal-dark);
  margin-bottom: var(--sp-sm);
  letter-spacing: 0.02em;
}

.hero h1 .accent {
  color: var(--orange-warm);
  position: relative;
}

.hero h1 .accent::after {
  content: '';
  position: absolute;
  bottom: 0.1em;
  left: 0;
  right: 0;
  height: 0.12em;
  background: color-mix(in oklch, var(--accent) 30%, transparent);
  border-radius: 2px;
}

.hero-desc {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--slate);
  line-height: 2;
  max-width: 480px;
  margin-bottom: var(--sp-md);
}

.service-area {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.3rem 1rem;
  background: color-mix(in oklch, var(--teal) 10%, transparent);
  border: 1px solid color-mix(in oklch, var(--teal) 20%, transparent);
  border-radius: 2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--teal);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
  background: var(--teal);
  padding: 0.9rem 2rem;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
  background: var(--teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--teal-dark);
  background: transparent;
  padding: 0.9rem 2rem;
  border: 1px solid color-mix(in oklch, var(--teal) 30%, transparent);
  border-radius: 2px;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-secondary:hover {
  border-color: var(--teal);
  background: color-mix(in oklch, var(--teal) 5%, var(--white));
}

/* Hero image area */
.hero-visual {
  position: relative;
  height: 560px;
}

.hero-img-main {
  position: absolute;
  top: 0;
  right: 0;
  width: 85%;
  height: 75%;
  background: linear-gradient(135deg, var(--teal-light), color-mix(in oklch, var(--orange-light) 40%, var(--teal-light)));
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.hero-img-main::after {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.03) 40px,
      rgba(255,255,255,0.03) 41px
    );
}

/* 室内场景 SVG 插图 */
.hero-illustration {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img-accent {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 45%;
  height: 40%;
  background: var(--teal-light);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.06);
}

.hero-stats {
  position: absolute;
  bottom: 15%;
  left: -5%;
  background: white;
  padding: 1.2rem 1.8rem;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.06);
  z-index: 3;
}

.hero-stats-row {
  display: flex;
  gap: 2rem;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--teal-dark);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.7rem;
  color: var(--slate);
  margin-top: 0.25rem;
  letter-spacing: 0.05em;
}

/* ==================== TRUST BAR ==================== */
.trust-bar {
  padding: var(--sp-md) 0;
  background: white;
  border-top: 1px solid color-mix(in oklch, var(--teal-light) 60%, transparent);
  border-bottom: 1px solid color-mix(in oklch, var(--teal-light) 60%, transparent);
}

.trust-items {
  display: flex;
  justify-content: center;
  gap: clamp(2rem, 5vw, 4rem);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--slate);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.trust-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--teal-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.trust-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--teal);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ==================== SERVICES ==================== */
.services {
  background: var(--white);
}

.section-header {
  text-align: center;
  margin-bottom: var(--sp-lg);
}

.section-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--teal);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--sp-sm);
  display: block;
}

.section-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--teal-dark);
  line-height: 1.3;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--slate);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.9;
}

/* Service cards - asymmetric grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: white;
  border-radius: 4px;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  position: relative;
  overflow: hidden;
  transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: default;
  border: 1px solid color-mix(in oklch, var(--teal-light) 40%, transparent);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.06);
  border-color: color-mix(in oklch, var(--teal) 20%, transparent);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:nth-child(1) { grid-column: span 7; }
.service-card:nth-child(2) { grid-column: span 5; }
.service-card:nth-child(3) { grid-column: span 4; }
.service-card:nth-child(4) { grid-column: span 4; }
.service-card:nth-child(5) { grid-column: span 4; }

.service-num {
  font-family: var(--serif);
  font-size: 3rem;
  font-weight: 900;
  color: color-mix(in oklch, var(--orange) 15%, transparent);
  line-height: 1;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--teal-dark);
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--slate);
  line-height: 1.8;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.service-tag {
  font-size: 0.72rem;
  color: var(--teal);
  background: var(--teal-light);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
  letter-spacing: 0.03em;
}

/* ==================== PROCESS ==================== */
.process {
  background: var(--teal-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.process::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: radial-gradient(ellipse at 70% 50%, color-mix(in oklch, var(--teal) 30%, transparent), transparent 70%);
  pointer-events: none;
}

.process .section-tag { color: var(--accent); }
.process .section-title { color: var(--white); }
.process .section-desc { color: color-mix(in oklch, var(--white) 60%, transparent); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 2.5rem;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: linear-gradient(to right, transparent, color-mix(in oklch, var(--white) 15%, transparent), transparent);
}

.process-step {
  text-align: center;
  padding: 0 1rem;
  position: relative;
}

.step-num {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklch, var(--white) 20%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  background: color-mix(in oklch, var(--teal-dark) 80%, black);
  position: relative;
  z-index: 2;
}

.process-step h4 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: 0.03em;
}

.process-step p {
  font-size: 0.85rem;
  color: color-mix(in oklch, var(--white) 55%, transparent);
  line-height: 1.8;
}

/* ==================== SHOWCASE ==================== */
.showcase {
  background: var(--mist);
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.showcase-item {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  group: true;
}

.showcase-visual {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--orange-light), var(--teal-light));
  position: relative;
  overflow: hidden;
}

.showcase-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 60%);
  transition: opacity 0.4s;
}

.showcase-item:hover .showcase-visual::after {
  background: linear-gradient(to top, rgba(0,0,0,0.3) 0%, transparent 40%);
}

.showcase-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: clamp(1.2rem, 2.5vw, 2rem);
  z-index: 2;
  transform: translateY(10px);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.showcase-item:hover .showcase-overlay {
  transform: translateY(0);
}

.showcase-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.showcase-name {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: white;
  margin-bottom: 0.4rem;
}

.showcase-meta {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
}

/* ==================== PROMISE / GUARANTEE ==================== */
.promise {
  background: white;
}

.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.promise-card {
  padding: clamp(1.5rem, 2.5vw, 2.5rem);
  border: 1px solid color-mix(in oklch, var(--teal-light) 50%, transparent);
  border-radius: 4px;
  transition: all 0.4s;
  text-align: center;
}

.promise-card:hover {
  border-color: color-mix(in oklch, var(--teal) 25%, transparent);
  box-shadow: 0 10px 40px rgba(0,0,0,0.04);
}

.promise-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.2rem;
  background: var(--teal-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.promise-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--teal);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.promise-card h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--teal-dark);
  margin-bottom: 0.6rem;
}

.promise-card p {
  font-size: 0.85rem;
  color: var(--slate);
  line-height: 1.8;
}

/* ==================== COUNTER SECTION ==================== */
.counter-section {
  background: var(--teal);
  color: var(--white);
  padding: var(--sp-lg) 0;
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2rem;
  text-align: center;
}

.counter-item {}

.counter-num {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.counter-num .unit {
  font-size: 0.5em;
  font-weight: 400;
  opacity: 0.7;
  margin-left: 0.1em;
}

.counter-label {
  font-size: 0.85rem;
  opacity: 0.7;
  letter-spacing: 0.05em;
}

/* ==================== TESTIMONIAL ==================== */
.testimonial {
  background: var(--mist);
  padding: var(--sp-xl) 0;
}

.testimonial-slider {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.testimonial-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: white;
  border: 1px solid var(--teal-light);
  border-radius: 50%;
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.testimonial-arrow:hover {
  background: var(--teal);
  color: white;
  transform: translateY(-50%) scale(1.05);
}

.testimonial-arrow-left {
  left: -60px;
}

.testimonial-arrow-right {
  right: -60px;
}

.testimonial-card {
  text-align: center;
  padding: var(--sp-md);
  transition: all 0.5s ease;
}

.testimonial-quote {
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 400;
  color: var(--teal-dark);
  line-height: 2;
  margin-bottom: var(--sp-sm);
  position: relative;
}

.testimonial-quote::before {
  content: '"';
  font-family: var(--serif);
  font-size: 5rem;
  font-weight: 900;
  color: color-mix(in oklch, var(--orange) 12%, transparent);
  position: absolute;
  top: -2rem;
  left: 50%;
  transform: translateX(-50%);
  line-height: 1;
}

.testimonial-author {
  font-size: 0.85rem;
  color: var(--slate);
  letter-spacing: 0.03em;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .testimonial-arrow {
    width: 35px;
    height: 35px;
  }
  
  .testimonial-arrow-left {
    left: -18px;
  }
  
  .testimonial-arrow-right {
    right: -18px;
  }
  
  .testimonial-card {
    padding: var(--sp-sm);
  }
}

.testimonial-author strong {
  color: var(--teal-dark);
  font-weight: 500;
}

/* ==================== CTA ==================== */
.cta-section {
  background: var(--teal-dark);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, color-mix(in oklch, var(--teal) 20%, transparent), transparent 60%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
}

.cta-section h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.cta-section p {
  font-size: 1rem;
  opacity: 0.7;
  margin-bottom: var(--sp-md);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-phone {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.05em;
  display: inline-block;
  margin-bottom: var(--sp-sm);
  transition: opacity 0.3s;
}

.cta-phone:hover { opacity: 0.8; }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
  background: var(--orange);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cta-btn:hover {
  background: var(--orange);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(255, 152, 0, 0.6), 0 10px 30px rgba(0,0,0,0.2);
  filter: brightness(1.1);
}

.cta-btn-secondary {
  background: transparent;
  border: 1px solid var(--white);
  color: var(--white);
}

.cta-btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.qr-code-container {
  margin: 2rem 0;
}

.qr-code {
  text-align: center;
}

/* ==================== FOOTER ==================== */
footer {
  background: var(--charcoal);
  color: color-mix(in oklch, var(--white) 50%, transparent);
  padding: var(--sp-lg) 0 var(--sp-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: var(--sp-md);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1rem;
  letter-spacing: 0.08em;
}

.footer-brand .footer-brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.9;
  max-width: 300px;
}

.footer-col h4 {
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1rem;
  letter-spacing: 0.06em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  font-size: 0.82rem;
  color: color-mix(in oklch, var(--white) 45%, transparent);
  text-decoration: none;
  transition: color 0.3s;
  letter-spacing: 0.02em;
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid color-mix(in oklch, var(--white) 8%, transparent);
  padding-top: var(--sp-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
}

.footer-bottom a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, text-decoration 0.3s ease;
}

.footer-bottom a:hover,
.footer-bottom a:focus {
  color: var(--teal);
  text-decoration: underline;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { height: 350px; margin-top: var(--sp-md); }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .service-card:nth-child(1),
  .service-card:nth-child(2),
  .service-card:nth-child(3),
  .service-card:nth-child(4),
  .service-card:nth-child(5) { grid-column: span 1; }
  .process-steps { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .process-steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 1.5rem;
    gap: 1rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  }
  .services-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
  .counter-grid { grid-template-columns: 1fr 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .hero-stats { position: relative; bottom: auto; left: auto; margin-top: 1rem; }
}

/* ==================== SVG ILLUSTRATIONS ==================== */
.scene-svg {
  width: 100%;
  height: 100%;
}

/* ==================== WECHAT BUTTON ==================== */
.wechat-button {
  position: fixed;
  right: 20px;
  top: 60%;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #07C160, #05AE54);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(7, 193, 96, 0.4);
  cursor: pointer;
  z-index: 999;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  animation: wechatPulse 2s infinite;
}

.wechat-button:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(7, 193, 96, 0.5);
}

.wechat-button svg {
  width: 32px;
  height: 32px;
  fill: white;
}

@keyframes wechatPulse {
  0%, 100% {
    box-shadow: 0 4px 12px rgba(7, 193, 96, 0.4);
  }
  50% {
    box-shadow: 0 8px 20px rgba(7, 193, 96, 0.6);
  }
}

@media (max-width: 768px) {
  .wechat-button {
    right: 15px;
    top: 60%;
    width: 65px;
    height: 65px;
  }
  
  .wechat-button svg {
    width: 32px;
    height: 32px;
  }
}