/* ============================================================
   CSS Variables & Reset
   ============================================================ */
:root {
  --primary:       #0ea5e9;
  --dark:          #1a365d;
  --orange:        #ea580c;
  --accent:        #ea580c;
  --text:          #2d3748;
  --border-c:      #8dbcc4;
  --bg-blue:       #abd6dd;
  --bg-teal:       #98c1c9;
  --bg-gray:       #f5f5f5;
  --shadow-blue:   rgba(14,165,233,.2);
  --font-cn:       'Noto Sans SC','Source Han Sans CN','PingFang SC','Microsoft YaHei',sans-serif;
  --font-en:       'Space Grotesk',sans-serif;
  --nav-h:         83px;
  --cmax:          1390px;
  --sec-pv:        88px;
  --ease-out:      cubic-bezier(.25,.1,.25,1);
  --ease-spring:   cubic-bezier(.34,1.56,.64,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-cn);
  color: var(--text);
  background: #fff;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img     { display: block; max-width: 100%; }
a       { text-decoration: none; color: inherit; }
ul      { list-style: none; }
button  { border: none; background: none; cursor: pointer; font-family: inherit; }

/* ============================================================
   Layout
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--cmax);
  margin: 0 auto;
  padding: 0 clamp(16px, 3.5vw, 60px);
}

.section {
  padding: var(--sec-pv) 0;
  background: #fff;
}

/* ============================================================
   Keyframe Animations
   ============================================================ */
@keyframes floatY {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-14px); }
}
@keyframes glowPulse {
  0%,100% { box-shadow: 0 0 20px rgba(14,165,233,.25), 0 0 40px rgba(14,165,233,.1); }
  50%     { box-shadow: 0 0 36px rgba(14,165,233,.45), 0 0 72px rgba(14,165,233,.2); }
}
@keyframes fadeUpIn {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInScale {
  from { opacity: 0; transform: scale(.94); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes rippleAnim {
  to { transform: scale(2.8); opacity: 0; }
}
@keyframes slideLeft {
  from { transform: translateX(-40px); opacity: 0; }
  to   { transform: translateX(0);     opacity: 1; }
}
@keyframes slideRight {
  from { transform: translateX(40px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}
@keyframes barGrow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   Section Header — shared
   ============================================================ */
.sec-header {
  text-align: center;
  margin-bottom: 56px;
}
.sec-title {
  font-family: var(--font-en);
  font-size: clamp(26px, 2.8vw, 40px);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
  letter-spacing: -.3px;
  position: relative;
  display: inline-block;
}
.sec-bar {
  width: 89px;
  height: 5px;
  background: var(--orange);
  border-radius: 3px;
  margin: 14px auto 0;
  transform-origin: left;
  animation: barGrow .6s var(--ease-out) both;
}
.sec-bar.animated { animation-play-state: running; }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(141,188,196,.2);
  transition: background .4s var(--ease-out), box-shadow .4s;
  overflow: visible;
}
.nav.scrolled {
  background: rgba(255,255,255,.97);
  box-shadow: 0 2px 28px rgba(0,0,0,.07);
}

/* Scroll progress bar */
.nav-progress-bar {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--orange) 100%);
  transition: width .1s linear;
  z-index: 10;
}

.nav-inner {
  max-width: var(--cmax);
  margin: 0 auto;
  padding: 0 clamp(16px, 3.5vw, 60px);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  transition: opacity .2s;
}
.nav-brand:hover { opacity: .85; }
.brand-logo {
  width: 48px; height: 48px;
  object-fit: contain;
  transition: transform .3s var(--ease-spring);
}
.nav-brand:hover .brand-logo { transform: rotate(-8deg) scale(1.1); }
.brand-name {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 20px;
  color: var(--dark);
  letter-spacing: -.5px;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 56px);
  flex: 1;
  justify-content: center;
}
.nav-link {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  white-space: nowrap;
  transition: color .25s;
  position: relative;
  padding-bottom: 4px;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s var(--ease-out);
}
.nav-link:hover        { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active       { color: var(--primary); }
.nav-link.active::after{ transform: scaleX(1); }

/* Nav CTA */
.btn-cta-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  background: var(--orange);
  color: #fff;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 16px;
  border-radius: 9999px;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(124,45,18,.25), 0 3px 6px rgba(124,45,18,.15);
  transition: transform .25s var(--ease-spring), box-shadow .25s, background .2s;
  overflow: hidden;
  position: relative;
}
.btn-cta-nav:hover {
  background: #c2410c;
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 12px 28px rgba(124,45,18,.35), 0 4px 8px rgba(124,45,18,.2);
}
.btn-nav-icon { width: 15px; height: 12px; object-fit: contain; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  padding: 8px;
  margin-left: auto;
  flex-shrink: 0;
  border-radius: 8px;
  transition: background .2s;
}
.hamburger:hover { background: rgba(14,165,233,.08); }
.bar {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform .35s var(--ease-out), opacity .35s;
}
.hamburger.is-open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open .bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(26,54,93,.15);
  z-index: 998;
  opacity: 0;
  transition: opacity .3s;
}
.nav-overlay.is-visible {
  opacity: 1;
}

/* Ripple effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
  transform: scale(0);
  animation: rippleAnim .6s ease-out forwards;
  pointer-events: none;
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  position: relative;
  min-height: 982px;
  padding-top: var(--nav-h);
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(32px, 5vw, 100px);
  padding-top: 80px;
  padding-bottom: 100px;
}

.hero-left {
  flex: 1;
  max-width: 600px;
  animation: fadeUpIn .8s .2s var(--ease-out) both;
}

.hero-title {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(46px, 5.8vw, 86px);
  line-height: 1.116;
  letter-spacing: -.05em;
  color: var(--dark);
  margin-bottom: clamp(20px, 2.5vw, 36px);
}
.text-solid    { color: var(--dark); }
.text-gradient {
  background: linear-gradient(138.25deg, #1a365d 0%, #0ea5e9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-desc {
  font-size: clamp(15px, 1.3vw, 20px);
  line-height: 1.75;
  color: var(--text);
  max-width: 528px;
  margin-bottom: clamp(28px, 3vw, 44px);
}

.hero-btns { display: flex; gap: 20px; flex-wrap: wrap; }

/* Shared button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(15px, 1.3vw, 20px);
  height: clamp(52px, 5.2vw, 76px);
  padding: 0 clamp(22px, 2.2vw, 40px);
  border-radius: 9999px;
  transition: transform .3s var(--ease-spring), box-shadow .3s, background .2s;
  cursor: pointer;
  letter-spacing: 2px;
  overflow: hidden;
  position: relative;
}
.btn-orange {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 8px 28px rgba(234,88,12,.35);
}
.btn-orange:hover {
  background: #c2410c;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 36px rgba(234,88,12,.45);
}
.btn-outline {
  background: #fff;
  color: var(--dark);
  border: 1.5px solid var(--border-c);
  letter-spacing: 0;
}
.btn-outline:hover {
  background: rgba(14,165,233,.06);
  border-color: var(--primary);
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 24px rgba(14,165,233,.15);
}

/* Hero Glass Card */
.hero-card {
  width: clamp(260px, 33vw, 572px);
  height: clamp(330px, 43vw, 706px);
  flex-shrink: 0;
  background: rgba(255,255,255,.5);
  border: 1px solid rgba(255,255,255,.85);
  border-radius: 24px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  overflow: hidden;
  padding: 16px;
  animation: floatY 5.5s ease-in-out infinite,
             glowPulse 3.5s ease-in-out infinite,
             fadeInScale .9s .4s var(--ease-out) both;
}
.hero-card-img {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 20px;
}

/* ============================================================
   Project Section
   ============================================================ */
.project-wrap {
  display: flex;
  gap: clamp(32px, 5vw, 96px);
  align-items: flex-start;
}

.project-img-box {
  width: clamp(220px, 28vw, 520px);
  flex-shrink: 0;
  border: 1px solid var(--border-c);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 0 30px 0 var(--shadow-blue);
  transition: transform .35s var(--ease-out), box-shadow .35s;
}
.project-img-box:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(14,165,233,.25);
}
.project-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  transition: transform .5s var(--ease-out);
}
.project-img-box:hover .project-img { transform: scale(1.04); }

.project-info {
  flex: 1;
  min-width: 0;
  padding-top: 12px;
}
.project-title {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 48px);
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: clamp(14px, 1.8vw, 28px);
}
.project-desc-text {
  font-size: clamp(14px, 1.15vw, 18px);
  line-height: 2.5;
  color: var(--text);
  margin-bottom: 28px;
}

/* Accordion */
.accordion { display: flex; flex-direction: column; gap: 12px; }

.acc-item {
  border: 1px solid var(--border-c);
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255,255,255,.5);
  opacity: .65;
  transition: background .3s, opacity .3s, box-shadow .3s, border-color .3s;
}
.acc-item.acc-open {
  background: rgba(220,241,244,.35);
  opacity: 1;
  border-color: rgba(14,165,233,.4);
  box-shadow: 0 4px 20px rgba(14,165,233,.12);
}
.acc-item:not(.acc-open):hover {
  opacity: .85;
  border-color: rgba(14,165,233,.35);
}

.acc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 28px;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 14px;
  color: var(--dark);
  letter-spacing: 1.4px;
  text-transform: uppercase;
  cursor: pointer;
  text-align: left;
  gap: 12px;
  transition: padding .3s;
}
.acc-item.acc-open .acc-head { padding-bottom: 16px; }
.acc-head span:first-child { flex: 1; }

.acc-arrow-wrap {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  width: 20px; height: 20px;
  background: rgba(14,165,233,.1);
  border-radius: 50%;
  justify-content: center;
  transition: background .3s, transform .4s var(--ease-spring);
}
.acc-item.acc-open .acc-arrow-wrap {
  background: rgba(14,165,233,.2);
  transform: rotate(180deg);
}
.acc-arrow { width: 10px; object-fit: contain; }

.acc-body {
  overflow: hidden;
  height: 0;
  transition: height .38s var(--ease-out);
}
.acc-body-inner { padding: 0 28px 24px; }

.feat-list { display: flex; flex-direction: column; gap: 12px; }
.feat-list li {
  position: relative;
  padding-left: 18px;
  font-size: clamp(14px, 1.1vw, 16px);
  color: var(--text);
  line-height: 1.625;
}
.feat-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

/* ============================================================
   Join Section
   ============================================================ */
.join-section { background: var(--bg-blue); }

.join-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 40px);
  margin-bottom: 48px;
}

.join-card-link,
.result-card-link {
  display: block;
  color: inherit;
}

.join-card {
  background: #fff;
  border: 1px solid var(--border-c);
  border-radius: 24px;
  padding: 28px 24px 32px;
  min-height: 250px;
  transition: transform .3s var(--ease-spring), box-shadow .3s, border-color .3s;
  position: relative;
  overflow: hidden;
}
.join-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(14,165,233,.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity .3s;
}
.join-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 48px rgba(14,165,233,.2);
  border-color: rgba(14,165,233,.4);
}
.join-card:hover::before { opacity: 1; }

.card-icon-bg {
  width: 64px; height: 64px;
  background: rgba(14,165,233,.1);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: background .3s, transform .35s var(--ease-spring);
}
.join-card:hover .card-icon-bg {
  background: rgba(14,165,233,.18);
  transform: scale(1.1) rotate(-5deg);
}
.card-icon { width: 28px; height: 28px; object-fit: contain; }

.card-name {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(16px, 1.4vw, 20px);
  color: var(--dark);
  margin-bottom: 14px;
}
.card-text {
  font-size: clamp(13px, 1.05vw, 16px);
  line-height: 1.75;
  color: var(--text);
}

/* More button — shared */
.more-wrap { display: flex; justify-content: center; margin-top: 8px; }
.btn-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 53px;
  padding: 0 36px;
  border: 1.5px solid var(--text);
  border-radius: 30px;
  font-family: var(--font-cn);
  font-size: 16px;
  color: var(--text);
  position: relative;
  overflow: hidden;
  transition: color .3s, border-color .3s, box-shadow .3s, transform .3s var(--ease-spring);
}
.btn-more::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--dark);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease-out);
  z-index: 0;
}
.btn-more:hover::before { transform: scaleX(1); }
.btn-more:hover {
  color: #fff;
  border-color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,54,93,.25);
}
.btn-more > * { position: relative; z-index: 1; }
.more-icon { width: 14px; height: auto; object-fit: contain; transition: transform .3s, filter .3s; }
.btn-more:hover .more-icon { transform: translateX(4px); filter: brightness(0) invert(1); }

/* ============================================================
   Results Section
   ============================================================ */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 3.5vw, 56px);
}
.results-grid--mt { margin-top: clamp(20px, 2.5vw, 40px); }

.result-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,.1);
  overflow: hidden;
  transition: transform .35s var(--ease-spring), box-shadow .35s;
}
.result-card:hover {
  transform: translateY(-8px) scale(1.015);
  box-shadow: 0 20px 48px rgba(0,0,0,.14);
}

.result-img-wrap {
  width: 100%;
  aspect-ratio: 391.5 / 228;
  overflow: hidden;
  border-radius: 12px 12px 0 0;
  background: var(--bg-gray);
}
.result-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease-out);
}
.result-card:hover .result-img { transform: scale(1.06); }

.result-body { padding: 16px 18px 18px; }
.result-name {
  font-family: var(--font-cn);
  font-weight: 500;
  font-size: clamp(15px, 1.4vw, 22px);
  color: #282828;
  margin-bottom: 12px;
  line-height: 1.4;
}
.result-user {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #555;
}
.result-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2.5px solid rgba(14,165,233,.25);
  object-fit: cover;
  flex-shrink: 0;
  transition: border-color .3s;
}
.result-card:hover .result-avatar { border-color: rgba(14,165,233,.6); }

.results-section .more-wrap { margin-top: 44px; }

/* ============================================================
   About Section
   ============================================================ */
.about-section { background: var(--bg-gray); }

.about-wrap {
  display: flex;
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.about-text { flex: 0 0 clamp(260px, 40%, 565px); }
.about-text p {
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 2.3;
  color: #363636;
  text-indent: 2em;
  margin-bottom: 18px;
}
.about-text p:last-child { margin-bottom: 0; }

.about-media {
  flex: 1;
  position: relative;
  min-height: 380px;
}
.about-deco {
  position: absolute;
  bottom: -12px;
  right: -12px;
  width: 62%;
  height: 56%;
  background: var(--bg-teal);
  border-radius: 18px;
  z-index: 0;
  transition: transform .4s var(--ease-out);
}
.about-media:hover .about-deco { transform: translate(6px, 6px); }
.about-img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0,0,0,.12);
  transition: transform .4s var(--ease-out), box-shadow .4s;
}
.about-media:hover .about-img {
  transform: translate(-4px,-4px);
  box-shadow: 0 24px 60px rgba(0,0,0,.16);
}

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section {
  background: var(--bg-teal);
  padding: clamp(64px, 8vw, 138px) 0;
  overflow: hidden;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(255,255,255,.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-wrap {
  display: flex;
  gap: clamp(32px, 6vw, 100px);
  align-items: center;
}

.cta-left { flex: 1; max-width: 540px; }
.cta-title {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(30px, 4vw, 60px);
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 24px;
}
.cta-desc {
  font-size: clamp(14px, 1.3vw, 20px);
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 44px;
}

.contact-list { display: flex; flex-direction: column; gap: 32px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 28px;
  transition: transform .25s var(--ease-out);
}
.contact-item:hover { transform: translateX(6px); }

.contact-icon-box {
  width: 64px; height: 64px;
  flex-shrink: 0;
  background: rgba(14,165,233,.2);
  border: 1px solid rgba(14,165,233,.3);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(0,0,0,.1);
  transition: background .3s, transform .3s var(--ease-spring);
}
.contact-item:hover .contact-icon-box {
  background: rgba(14,165,233,.3);
  transform: scale(1.08);
}
.contact-icon { width: 22px; height: 24px; object-fit: contain; }

.phone-num {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: clamp(20px, 2.2vw, 30px);
  color: var(--dark);
  letter-spacing: .5px;
}
.contact-addr {
  font-family: var(--font-cn);
  font-size: clamp(14px, 1.3vw, 18px);
  color: var(--dark);
  line-height: 1.5;
}

.cta-right { flex: 0 0 clamp(220px, 28vw, 440px); }
.qr-card {
  background: #fff;
  border-radius: 48px;
  box-shadow: 0 8px 48px rgba(14,165,233,.25);
  padding: clamp(28px, 3.5vw, 52px);
  text-align: center;
  position: relative;
  transition: transform .4s var(--ease-spring), box-shadow .4s;
}
.qr-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 64px rgba(14,165,233,.35);
}
.qr-tag {
  position: absolute;
  top: -14px; left: 36px;
  background: #0284c7;
  color: #fff;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 11px;
  padding: 5px 14px;
  border-radius: 9999px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(2,132,199,.3);
}
.qr-img-wrap {
  background: #f8fafc;
  border: 1px solid #e8eef4;
  border-radius: 24px;
  padding: 18px;
  display: inline-block;
  margin-bottom: 20px;
  transition: transform .35s var(--ease-spring);
}
.qr-card:hover .qr-img-wrap { transform: scale(1.03); }
.qr-img {
  width: clamp(140px, 14vw, 224px);
  height: clamp(140px, 14vw, 224px);
  object-fit: contain;
  opacity: .85;
  mix-blend-mode: multiply;
}
.qr-label {
  font-family: var(--font-cn);
  font-size: clamp(20px, 2vw, 36px);
  color: var(--dark);
  letter-spacing: 3.6px;
  margin-bottom: 14px;
  font-weight: 500;
}
.qr-dividers { display: flex; justify-content: center; gap: 16px; }
.qr-divider-line { display: block; width: 40px; height: 1px; background: #e2e8f0; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: #fff;
  border-top: 1px solid rgba(141,188,196,.5);
  padding: clamp(40px, 5vw, 74px) 0;
}
.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}
.footer-logo {
  width: 40px; height: 40px;
  object-fit: contain;
  transition: transform .35s var(--ease-spring);
}
.footer-brand:hover .footer-logo { transform: rotate(-8deg) scale(1.1); }
.footer-name { font-family: var(--font-cn); font-size: 20px; color: var(--dark); }
.footer-copy { font-size: 12px; color: #718096; letter-spacing: .6px; text-transform: uppercase; }

.footer-nav { display: flex; align-items: center; gap: clamp(24px, 3vw, 60px); flex-wrap: wrap; }
.footer-link {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: 12px;
  color: var(--text);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  position: relative;
  transition: color .2s;
}
.footer-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1.5px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease-out);
}
.footer-link:hover { color: var(--primary); }
.footer-link:hover::after { transform: scaleX(1); }

/* ============================================================
   Back to Top
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 36px; right: 36px;
  width: 52px; height: 52px;
  background: var(--orange);
  color: #fff;
  border-radius: 50%;
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px rgba(234,88,12,.35);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(.8);
  transition: opacity .35s, visibility .35s, transform .35s var(--ease-spring), box-shadow .3s;
  z-index: 900;
  border: none;
  outline: none;
}
.back-to-top.visible {
  opacity: 1; visibility: visible;
  transform: translateY(0) scale(1);
}
.back-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 12px 32px rgba(234,88,12,.45);
}

/* ============================================================
   Scroll Reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .65s var(--ease-out), transform .65s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-left  { opacity: 0; transform: translateX(-40px); transition: opacity .65s var(--ease-out), transform .65s var(--ease-out); }
.reveal-right { opacity: 0; transform: translateX(40px);  transition: opacity .65s var(--ease-out), transform .65s var(--ease-out); }
.reveal-left.is-visible,
.reveal-right.is-visible { opacity: 1; transform: none; }

/* ============================================================
   Responsive — ≤ 1200px
   ============================================================ */
@media (max-width: 1200px) {
  :root { --sec-pv: 72px; }
  .hero-card { display: none; }
  .hero-content { justify-content: flex-start; }
  .hero-left { max-width: 100%; }
  .hero-title { font-size: clamp(44px, 7vw, 68px); }
}

/* ============================================================
   Responsive — ≤ 900px
   ============================================================ */
@media (max-width: 900px) {
  :root { --sec-pv: 60px; }

  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    inset-inline: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 8px clamp(16px, 4vw, 48px) 28px;
    gap: 2px;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform .38s var(--ease-out), opacity .38s;
    box-shadow: 0 12px 32px rgba(0,0,0,.1);
    z-index: 999;
  }
  .nav-menu.is-open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-link { width: 100%; padding: 13px 0; border-bottom: 1px solid rgba(141,188,196,.25); font-size: 18px; }
  .nav-link::after { display: none; }
  .hamburger { display: flex; }
  .btn-cta-nav { display: none; }
  .nav-overlay { display: block; }

  .project-wrap { flex-direction: column; }
  .project-img-box { width: 100%; max-width: 480px; }

  .join-grid { grid-template-columns: repeat(2, 1fr); }

  .about-wrap { flex-direction: column; }
  .about-text { flex: none; width: 100%; }
  .about-media { width: 100%; min-height: 300px; }

  .cta-wrap { flex-direction: column; align-items: flex-start; }
  .cta-left { max-width: 100%; }
  .cta-right { width: 100%; display: flex; justify-content: center; }

  .footer-wrap { flex-direction: column; }
  .footer-nav { gap: 24px; }

  .back-to-top { bottom: 24px; right: 24px; width: 46px; height: 46px; font-size: 18px; }
}

/* ============================================================
   Responsive — ≤ 640px
   ============================================================ */
@media (max-width: 640px) {
  :root { --sec-pv: 48px; }

  .hero { min-height: auto; }
  .hero-content { padding-top: 48px; padding-bottom: 64px; }
  .hero-title { font-size: clamp(36px, 9.5vw, 52px); }
  .hero-btns { flex-direction: column; gap: 14px; }
  .btn { width: 100%; max-width: 360px; }

  .join-grid { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr; }

  .project-img-box { border-radius: 16px; }
  .qr-card { border-radius: 32px; }

  .sec-title { font-size: clamp(22px, 7vw, 32px); }
  .cta-title { font-size: clamp(26px, 8vw, 44px); }

  .about-deco { display: none; }
  .about-img { border-radius: 12px; }

  .contact-list { gap: 24px; }
  .contact-item { gap: 20px; }

  .footer-nav { flex-wrap: wrap; justify-content: flex-start; gap: 14px 28px; }
}

/* ============================================================
   Shared Inner Page Hero Banner (results / about / contact / detail)
   ============================================================ */
.page-hero {
  position: relative;
  height: 512px;
  overflow: hidden;
  background: var(--bg-blue);
}
.page-hero-bg { position: absolute; inset: 0; }
.page-hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 124.45%;
  top: -24.45%;
  object-fit: cover;
  object-position: center;
}
.page-hero-mask-img { display: none; }
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent 0%, var(--page-hero-fade, #f8f8f8) 100%);
  pointer-events: none;
  z-index: 2;
}
.page-hero-content {
  position: absolute;
  top: 269px;
  left: 0; right: 0;
  z-index: 3;
}
.page-hero-title {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 64px);
  color: #fff;
  line-height: 1.5;
  letter-spacing: -.5px;
  animation: fadeUpIn .7s .2s ease both;
}
.page-hero-bar {
  width: 256px;
  height: 5px;
  background: #fff;
  margin-top: 12px;
  border-radius: 3px;
  transform-origin: left;
  animation: barGrow .6s .5s ease both;
}

/* Inner-page section header (centered title + orange underbar) */
.inner-sec-head {
  text-align: center;
  margin-bottom: 60px;
}
.inner-sec-title {
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(28px, 3vw, 40px);
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 8px;
}
.inner-sec-bar {
  display: inline-block;
  width: 89px;
  height: 5px;
  background: var(--accent);
  border-radius: 3px;
}

@media (max-width: 900px) {
  .page-hero { height: 380px; }
  .page-hero-content { top: 200px; }
}
@media (max-width: 640px) {
  .page-hero { height: 280px; }
  .page-hero-content { top: 140px; }
  .page-hero-title { font-size: clamp(28px, 8vw, 44px); }
  .page-hero-bar { width: 160px; }
}

/* ============================================================
   Focus visible
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ============================================================
   Loading skeleton shimmer (optional enhancement)
   ============================================================ */
@keyframes shimmerLoad {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}