/* ========== 设计令牌 ========== */
:root {
  --primary: #0F766E;
  --primary-dark: #134E4A;
  --secondary: #14B8A6;
  --accent: #0369A1;
  --bg: #F0FDFA;
  --surface: #FFFFFF;
  --surface-2: #F8FAFC;
  --text: #0F172A;
  --text-muted: #475569;
  --text-soft: #64748B;
  --border: #E2E8F0;
  --border-soft: #ECFEF7;
  --shadow-sm: 0 1px 2px rgba(15, 118, 110, .06), 0 1px 3px rgba(15, 23, 42, .04);
  --shadow-md: 0 6px 18px rgba(15, 118, 110, .10), 0 2px 6px rgba(15, 23, 42, .05);
  --shadow-lg: 0 24px 60px rgba(15, 118, 110, .18), 0 8px 24px rgba(15, 23, 42, .08);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --maxw: 1200px;
  --font-head: "Lexend", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-body: "Source Sans 3", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
}

/* ========== 重置 ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--surface);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5 { font-family: var(--font-head); color: var(--text); margin: 0; line-height: 1.25; font-weight: 600; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ========== 滚动进度条 ========== */
.scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 3px; width: 0;
  z-index: 200;
  background: linear-gradient(90deg, var(--secondary), var(--primary), var(--accent));
  transition: width .1s linear;
  border-radius: 0 3px 3px 0;
}

/* ========== 按钮 ========== */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600; font-size: 15px; font-family: var(--font-head);
  transition: all .25s cubic-bezier(.2, .8, .2, 1);
  cursor: pointer; white-space: nowrap; overflow: hidden;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(15, 118, 110, .28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(15, 118, 110, .36); }
.btn-ghost {
  background: rgba(255, 255, 255, .7); color: var(--primary-dark);
  border: 1.5px solid var(--border); backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: #fff; transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary-dark); box-shadow: 0 10px 28px rgba(0, 0, 0, .16); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(0, 0, 0, .22); }

/* 按钮光泽扫过 */
.btn-shine::after {
  content: "";
  position: absolute; top: 0; left: -120%;
  width: 60%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .38), transparent);
  transform: skewX(-20deg);
  animation: shine 3.4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shine {
  0% { left: -120%; }
  55%, 100% { left: 160%; }
}

/* ========== 导航 ========== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease, background .25s ease;
}
.navbar.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-sm); background: rgba(255, 255, 255, .93); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; transition: transform .25s ease; }
.brand:hover { transform: scale(1.02); }
.brand-mark { display: inline-flex; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name { font-family: var(--font-head); font-weight: 700; font-size: 18px; color: var(--text); letter-spacing: .5px; }
.brand-sub { font-size: 10px; letter-spacing: 2px; color: var(--text-soft); font-weight: 500; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative;
  padding: 9px 14px; border-radius: 999px;
  font-size: 14.5px; font-weight: 500; color: var(--text-muted);
  transition: color .2s ease, background .2s ease;
  cursor: pointer;
}
.nav-link::after {
  content: ""; position: absolute; left: 50%; bottom: 4px;
  width: 0; height: 2px; border-radius: 2px;
  background: var(--secondary);
  transform: translateX(-50%);
  transition: width .25s cubic-bezier(.2, .8, .2, 1);
}
.nav-link:hover { color: var(--primary); background: var(--border-soft); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 18px; }
.nav-cta { margin-left: 10px; padding: 10px 22px; color: #fff; }
.nav-cta:hover { color: #fff; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; border-radius: 10px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; margin: 0 auto;
  background: var(--text); border-radius: 2px; transition: all .25s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== 首页 Banner ========== */
.hero {
  position: relative; overflow: hidden;
  padding: 104px 0 96px;
  background: linear-gradient(170deg, #F0FDFA 0%, #FFFFFF 60%, #F0FDFA 100%);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-aurora {
  position: absolute; inset: -30%;
  background:
    radial-gradient(closest-side at 25% 30%, rgba(20, 184, 166, .30), transparent 70%),
    radial-gradient(closest-side at 78% 22%, rgba(3, 105, 161, .22), transparent 70%),
    radial-gradient(closest-side at 60% 80%, rgba(45, 212, 191, .26), transparent 70%);
  filter: blur(30px);
  animation: aurora 18s ease-in-out infinite alternate;
}
@keyframes aurora {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(-3%, 2%, 0) scale(1.08); }
  100% { transform: translate3d(3%, -2%, 0) scale(1.03); }
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(15, 118, 110, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, .055) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(900px 520px at 65% 5%, #000 35%, transparent 78%);
  -webkit-mask-image: radial-gradient(900px 520px at 65% 5%, #000 35%, transparent 78%);
  animation: gridDrift 24s linear infinite;
}
@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 52px 52px, 52px 52px; }
}
.orb {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(20, 184, 166, .22);
  animation: orbFloat 14s ease-in-out infinite alternate;
}
.orb-1 { width: 220px; height: 220px; top: 8%; right: 4%; }
.orb-2 { width: 150px; height: 150px; bottom: 12%; left: 2%; animation-delay: -4s; }
.orb-3 { width: 90px;  height: 90px;  top: 62%; right: 34%; animation-delay: -8s; border-color: rgba(3, 105, 161, .18); }
@keyframes orbFloat {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(-16px, -22px, 0); }
}

.hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 48px; align-items: center;
}
.hero-copy { max-width: 640px; }

/* 入场 stagger 动画 */
.anim {
  opacity: 0; transform: translateY(26px);
  animation: riseIn .8s cubic-bezier(.2, .8, .2, 1) forwards;
  animation-delay: var(--d, 0ms);
}
@keyframes riseIn { to { opacity: 1; transform: none; } }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 8px 17px; border-radius: 999px;
  background: rgba(255, 255, 255, .8);
  border: 1px solid rgba(20, 184, 166, .28);
  color: var(--primary-dark);
  font-size: 13px; font-weight: 600;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--secondary);
  box-shadow: 0 0 0 0 rgba(20, 184, 166, .55);
  animation: dotPulse 1.8s ease-out infinite;
}
@keyframes dotPulse {
  0%   { box-shadow: 0 0 0 0 rgba(20, 184, 166, .55); }
  70%  { box-shadow: 0 0 0 9px rgba(20, 184, 166, 0); }
  100% { box-shadow: 0 0 0 0 rgba(20, 184, 166, 0); }
}

.hero-title {
  margin-top: 24px;
  font-size: clamp(34px, 5.6vw, 58px);
  font-weight: 700; letter-spacing: -.5px;
  color: var(--primary-dark);
}
.hero-title .line { display: block; }
.hero-title .line:last-child {
  background: linear-gradient(100deg, var(--primary-dark) 0%, var(--secondary) 55%, var(--accent) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc { margin-top: 22px; font-size: clamp(15.5px, 2.1vw, 18px); color: var(--text-muted); }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }

/* 信任徽章（替代数字统计） */
.trust-strip {
  margin-top: 46px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 22px;
  padding-top: 26px; border-top: 1px solid var(--border);
}
.trust-strip li {
  display: flex; align-items: center; gap: 9px;
  font-size: 13.5px; color: var(--text-muted); font-weight: 500;
  transition: color .2s ease, transform .2s ease;
}
.trust-strip li svg { color: var(--secondary); flex-shrink: 0; }
.trust-strip li:hover { color: var(--primary); transform: translateX(3px); }

/* ---- 产品矩阵视觉墙 ---- */
.hero-visual {
  position: relative;
  height: 460px;
  display: flex; align-items: center; justify-content: center;
}
.pulse-ring {
  position: absolute; top: 50%; left: 50%;
  border-radius: 50%; border: 1px solid rgba(20, 184, 166, .28);
  transform: translate(-50%, -50%);
  animation: ringPulse 4.2s ease-out infinite;
}
.ring-1 { width: 250px; height: 250px; }
.ring-2 { width: 340px; height: 340px; animation-delay: 1.4s; border-color: rgba(20, 184, 166, .20); }
.ring-3 { width: 420px; height: 420px; animation-delay: 2.8s; border-color: rgba(3, 105, 161, .16); }
@keyframes ringPulse {
  0%   { transform: translate(-50%, -50%) scale(.88); opacity: .15; }
  55%  { opacity: .75; }
  100% { transform: translate(-50%, -50%) scale(1.12); opacity: 0; }
}

.hub-card {
  position: relative; overflow: hidden;
  width: 210px; padding: 26px 22px 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: 0 22px 50px rgba(15, 118, 110, .22);
  backdrop-filter: blur(14px);
  text-align: center;
  z-index: 3;
  animation: hubFloat 6s ease-in-out infinite alternate;
  transition: transform .25s ease;
}
@keyframes hubFloat {
  from { transform: translateY(-8px); }
  to   { transform: translateY(8px); }
}
.hub-glow {
  position: absolute; top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(20, 184, 166, .18), transparent 40%);
  animation: spin 9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hub-icon {
  position: relative;
  width: 56px; height: 56px; margin: 0 auto 14px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  box-shadow: 0 10px 22px rgba(15, 118, 110, .35);
}
.hub-title { position: relative; font-family: var(--font-head); font-weight: 700; font-size: 17px; color: var(--primary-dark); }
.hub-sub { position: relative; font-size: 12.5px; color: var(--text-soft); margin-top: 4px; }
.hub-bars { position: relative; display: flex; gap: 5px; justify-content: center; margin-top: 16px; }
.hub-bars i {
  width: 22px; height: 4px; border-radius: 2px;
  background: linear-gradient(90deg, var(--secondary), var(--primary));
  animation: barPulse 1.5s ease-in-out infinite;
}
.hub-bars i:nth-child(2) { animation-delay: .18s; }
.hub-bars i:nth-child(3) { animation-delay: .36s; }
.hub-bars i:nth-child(4) { animation-delay: .54s; }
@keyframes barPulse {
  0%, 100% { opacity: .35; transform: scaleY(1); }
  50%      { opacity: 1;   transform: scaleY(1.9); }
}

.float-card {
  position: absolute;
  display: flex; align-items: center; gap: 9px;
  padding: 9px 14px 9px 9px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .93);
  border: 1px solid var(--border);
  box-shadow: 0 12px 28px rgba(15, 118, 110, .16);
  backdrop-filter: blur(10px);
  font-size: 12.5px; font-weight: 600; color: var(--text);
  z-index: 4;
  animation: floatY 5.5s ease-in-out infinite alternate;
  transition: box-shadow .25s ease, transform .25s ease;
  white-space: nowrap;
}
.float-card img { width: 34px; height: 34px; border-radius: 9px; object-fit: cover; flex-shrink: 0; }
/* 视差位移：使用独立的 translate 属性，与浮动动画的 transform 叠加而不冲突 */
.hub-card, .float-card { translate: var(--px, 0px) var(--py, 0px); }
.float-card:hover { box-shadow: 0 18px 38px rgba(15, 118, 110, .26); }
@keyframes floatY {
  from { transform: translateY(-9px); }
  to   { transform: translateY(9px); }
}
.fc-1 { top: 6%;  left: 2%;   animation-delay: -.4s; }
.fc-2 { top: 26%; right: 0%;  animation-delay: -1.2s; }
.fc-3 { bottom: 26%; left: -2%; animation-delay: -2s; }
.fc-4 { bottom: 6%; right: 4%;  animation-delay: -2.8s; }
.fc-5 { top: 46%; left: -4%;    animation-delay: -3.4s; }
.fc-6 { top: 50%; right: -2%;   animation-delay: -4.4s; }

/* ========== 通用区块 ========== */
.section { padding: 96px 0; position: relative; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 3px;
  color: var(--secondary);
  background: rgba(20, 184, 166, .10);
  padding: 6px 15px; border-radius: 999px;
  font-family: var(--font-head);
}
.section-title { margin-top: 16px; font-size: clamp(27px, 3.8vw, 40px); color: var(--primary-dark); }
.section-desc { margin-top: 14px; font-size: 17px; color: var(--text-muted); }
.sub-title { text-align: center; font-size: 24px; color: var(--primary-dark); margin: 72px 0 40px; }

/* ========== 核心优势 ========== */
.advantage { background: linear-gradient(180deg, #FFFFFF 0%, #F0FDFA 100%); }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.adv-card {
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px 30px 32px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease, border-color .3s ease;
}
.adv-card::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(20, 184, 166, .10), transparent 55%);
  opacity: 0; transition: opacity .3s ease;
}
.adv-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(20, 184, 166, .45);
}
.adv-card:hover::before { opacity: 1; }
.adv-num {
  position: absolute; top: 18px; right: 22px;
  font-family: var(--font-head); font-size: 40px; font-weight: 700;
  color: rgba(20, 184, 166, .13);
  line-height: 1; transition: color .3s ease;
}
.adv-card:hover .adv-num { color: rgba(20, 184, 166, .26); }
.adv-icon {
  position: relative;
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff; margin-bottom: 18px;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
}
.adv-card:hover .adv-icon { transform: rotate(-8deg) scale(1.08); }
.adv-card h3 { position: relative; font-size: 18.5px; margin-bottom: 10px; }
.adv-card p { position: relative; color: var(--text-muted); font-size: 15px; }

/* ========== 关于我们 ========== */
.about { background: var(--surface); }
.about-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 30px; }
.about-intro {
  background: linear-gradient(160deg, #FFFFFF, #F0FDFA);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 42px 40px; box-shadow: var(--shadow-sm);
}
.about-intro h3 { font-size: 22px; color: var(--primary-dark); margin-bottom: 18px; }
.about-intro p { color: var(--text-muted); margin-bottom: 16px; font-size: 15.8px; }
.intro-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.intro-tags span {
  padding: 7px 15px; border-radius: 999px;
  background: rgba(20, 184, 166, .10);
  color: var(--primary-dark);
  font-size: 13px; font-weight: 600;
  border: 1px solid rgba(20, 184, 166, .18);
  transition: transform .22s ease, background .22s ease;
}
.intro-tags span:hover { transform: translateY(-2px); background: rgba(20, 184, 166, .2); }

.about-vision { display: flex; flex-direction: column; gap: 18px; }
.vision-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
  flex: 1;
}
.vision-card:hover { transform: translateX(4px); box-shadow: var(--shadow-md); }
.vision-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(20, 184, 166, .12); color: var(--primary); margin-bottom: 13px;
}
.vision-card h4 { font-size: 18px; margin-bottom: 8px; }
.vision-card p { color: var(--text-muted); font-size: 15px; }

/* 发展历程时间轴 */
.timeline {
  position: relative;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.timeline::before {
  content: ""; position: absolute;
  top: 26px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, rgba(20, 184, 166, .15), var(--secondary), rgba(20, 184, 166, .15));
}
.tl-item { position: relative; padding-top: 54px; text-align: center; }
.tl-dot {
  position: absolute; top: 18px; left: 50%;
  width: 16px; height: 16px; margin-left: -8px;
  border-radius: 50%;
  background: #fff; border: 3px solid var(--secondary);
  box-shadow: 0 0 0 5px rgba(20, 184, 166, .14);
  transition: transform .25s ease, box-shadow .25s ease;
}
.tl-item:hover .tl-dot { transform: scale(1.25); box-shadow: 0 0 0 9px rgba(20, 184, 166, .18); }
.tl-tag {
  display: inline-block;
  padding: 4px 12px; border-radius: 999px;
  background: rgba(20, 184, 166, .12); color: var(--primary);
  font-size: 12px; font-weight: 700; letter-spacing: 1px;
  margin-bottom: 8px;
}
.tl-item h4 { font-size: 17px; margin-bottom: 8px; }
.tl-item p { font-size: 14px; color: var(--text-muted); }

/* ========== 产品中心 ========== */
.products { background: linear-gradient(180deg, #F0FDFA 0%, #FFFFFF 100%); }

.filter-bar {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 20px; border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: 14px; font-weight: 600; font-family: var(--font-head);
  transition: all .22s ease; cursor: pointer;
}
.filter-btn:hover { border-color: var(--secondary); color: var(--primary); transform: translateY(-2px); }
.filter-btn.active {
  background: var(--primary); border-color: var(--primary); color: #fff;
  box-shadow: 0 8px 18px rgba(15, 118, 110, .28);
}

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease, border-color .3s ease;
  display: flex; flex-direction: column;
  transform-style: preserve-3d;
}
.product-card.hide { display: none; }
.product-card:hover, .product-card:focus-visible {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(20, 184, 166, .45);
  outline: none;
}
/* 卡片光泽扫过 */
.product-card::after {
  content: "";
  position: absolute; top: 0; left: -130%;
  width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: skewX(-18deg);
  opacity: 0; pointer-events: none;
}
.product-card:hover::after { animation: sweep .9s ease-in-out; opacity: 1; }
@keyframes sweep { from { left: -130%; } to { left: 170%; } }

.pc-media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #ECFEF7 0%, #F0FDFA 55%, #E6FBFF 100%);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.pc-media::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 120%, rgba(20, 184, 166, .22), transparent 60%);
  transition: opacity .3s ease; opacity: .7;
}
.product-card:hover .pc-media::before { opacity: 1; }
.pc-media img {
  position: relative;
  width: 100px; height: 100px; border-radius: 24px; object-fit: cover;
  box-shadow: 0 14px 30px rgba(15, 118, 110, .26);
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}
.product-card:hover .pc-media img { transform: scale(1.09) translateZ(30px); }
.pc-cat {
  position: absolute; top: 14px; left: 14px;
  background: rgba(255, 255, 255, .94); color: var(--primary-dark);
  font-size: 11px; font-weight: 700;
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--border); backdrop-filter: blur(6px);
}
.pc-body { padding: 24px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.pc-name { font-size: 20px; margin-bottom: 6px; }
.pc-tagline { font-size: 14px; color: var(--primary); font-weight: 600; margin-bottom: 12px; }
.pc-desc { font-size: 14.5px; color: var(--text-muted); flex: 1; }
.pc-more {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px; font-size: 14px; font-weight: 600; color: var(--primary);
  transition: gap .22s ease;
}
.product-card:hover .pc-more { gap: 12px; }

/* ========== 产品弹窗 ========== */
.modal { position: fixed; inset: 0; z-index: 1000; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal[aria-hidden="false"] { display: flex; }
.modal-overlay { position: absolute; inset: 0; background: rgba(15, 23, 42, .58); backdrop-filter: blur(5px); animation: fade .2s ease; }
.modal-panel {
  position: relative; width: 100%; max-width: 880px; max-height: 88vh; overflow-y: auto;
  background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  animation: pop .3s cubic-bezier(.2, .8, .2, 1);
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: translateY(20px) scale(.97); } to { opacity: 1; transform: none; } }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15, 23, 42, .06); color: var(--text); z-index: 2;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.modal-close:hover { background: var(--primary); color: #fff; transform: rotate(90deg); }
.modal-body { padding: 38px 42px 42px; }
.modal-head { display: flex; gap: 18px; align-items: center; padding-right: 44px; margin-bottom: 22px; }
.modal-icon { width: 68px; height: 68px; border-radius: 18px; object-fit: cover; box-shadow: var(--shadow-md); flex-shrink: 0; }
.modal-cat { font-size: 12px; font-weight: 700; color: var(--secondary); letter-spacing: 1px; }
.modal-name { font-size: 26px; color: var(--primary-dark); margin-top: 2px; }
.modal-tagline { font-size: 14px; color: var(--primary); font-weight: 600; margin-top: 4px; }
.modal-desc p { color: var(--text-muted); margin-bottom: 14px; font-size: 15.5px; }
.modal-desc p:last-child { margin-bottom: 0; }
.modal-shots { margin-top: 30px; }
.modal-shots h4 { font-size: 18px; color: var(--primary-dark); margin-bottom: 16px; }
.shots-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.shots-list figure { margin: 0; overflow: hidden; border-radius: 12px; }
.shots-list img {
  width: 100%; border-radius: 12px; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}
.shots-list img:hover { transform: scale(1.06); }

/* ========== 服务流程 ========== */
.service { background: linear-gradient(180deg, #FFFFFF 0%, #F0FDFA 100%); }
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.step {
  position: relative; text-align: center;
  padding: 34px 22px 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease, border-color .3s ease;
}
.step:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(20, 184, 166, .45); }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; right: -18px;
  width: 12px; height: 12px; margin-top: -6px;
  border-top: 2px solid var(--secondary); border-right: 2px solid var(--secondary);
  transform: rotate(45deg);
  opacity: .55;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 54px; height: 54px; border-radius: 16px;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: #fff; font-family: var(--font-head); font-weight: 700; font-size: 19px;
  box-shadow: 0 10px 22px rgba(15, 118, 110, .3);
  margin-bottom: 16px;
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
}
.step:hover .step-num { transform: scale(1.1) rotate(-6deg); }
.step h4 { font-size: 17.5px; margin-bottom: 9px; }
.step p { font-size: 14.5px; color: var(--text-muted); }

/* ========== CTA ========== */
.cta-band {
  position: relative; overflow: hidden;
  padding: 62px 0;
  background: linear-gradient(120deg, var(--primary-dark) 0%, var(--primary) 45%, var(--accent) 100%);
  background-size: 200% 200%;
  animation: ctaShift 12s ease-in-out infinite alternate;
}
@keyframes ctaShift {
  from { background-position: 0% 50%; }
  to   { background-position: 100% 50%; }
}
.cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 28px; flex-wrap: wrap;
}
.cta-inner h2 { font-size: clamp(24px, 3.4vw, 34px); color: #fff; }
.cta-inner p { margin-top: 10px; color: rgba(255, 255, 255, .82); font-size: 15.5px; }

/* ========== 联系我们 ========== */
.contact { background: var(--surface); }
.contact-grid { display: grid; grid-template-columns: .88fr 1.12fr; gap: 30px; align-items: stretch; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  flex: 1;
}
.contact-item:hover { transform: translateY(-3px); border-color: rgba(20, 184, 166, .45); box-shadow: var(--shadow-md); }
.ci-icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(20, 184, 166, .12); color: var(--primary); flex-shrink: 0;
  transition: background .25s ease, color .25s ease;
}
.contact-item:hover .ci-icon { background: var(--primary); color: #fff; }
.ci-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.ci-label { font-size: 12px; color: var(--text-soft); font-weight: 600; letter-spacing: .5px; }
.ci-value { font-size: 15.5px; color: var(--text); font-weight: 500; word-break: break-word; }

.contact-map {
  position: relative; overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-height: 380px;
}
.contact-map iframe { width: 100%; height: 100%; min-height: 380px; border: 0; display: block; }
.map-link {
  position: absolute; left: 16px; bottom: 16px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 17px;
  background: rgba(255, 255, 255, .96); color: var(--primary-dark);
  border: 1px solid var(--border); border-radius: 999px;
  font-size: 13px; font-weight: 600; box-shadow: var(--shadow-md);
  transition: all .25s ease;
}
.map-link:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

/* ========== 页脚 ========== */
.footer {
  background: linear-gradient(180deg, var(--primary-dark) 0%, #0B3B37 100%);
  color: rgba(255, 255, 255, .85);
  padding: 58px 0 38px;
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
.footer-brand { display: flex; align-items: center; gap: 14px; max-width: 430px; }
.footer-name { font-family: var(--font-head); font-weight: 700; font-size: 17.5px; color: #fff; }
.footer-tag { font-size: 13px; color: rgba(255, 255, 255, .7); margin-top: 5px; }
.footer-meta { font-size: 13.5px; line-height: 1.95; }
.footer-meta p { color: rgba(255, 255, 255, .78); }
.footer-meta .copyright { margin-top: 10px; color: rgba(255, 255, 255, .55); font-size: 12.5px; }
.footer-meta .icp { margin-top: 4px; font-size: 12.5px; }
.footer-meta .icp a { color: rgba(255, 255, 255, .55); text-decoration: none; transition: color .2s ease; }
.footer-meta .icp a:hover { color: rgba(20, 184, 166, .95); }
.brand-mark.sm svg { border-radius: 8px; }

/* ========== 滚动渐显 ========== */
.reveal {
  opacity: 0; transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2, .8, .2, 1), transform .7s cubic-bezier(.2, .8, .2, 1);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 400px; order: -1; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .step:not(:last-child)::after { display: none; }
  .timeline { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .timeline::before { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 68px 0; }
  .hero { padding: 60px 0 56px; }
  .hero-visual { height: 340px; }
  .hub-card { width: 180px; padding: 22px 18px 18px; }
  .float-card { font-size: 11.5px; padding: 7px 11px 7px 7px; }
  .float-card img { width: 28px; height: 28px; border-radius: 8px; }
  .fc-5, .fc-6 { display: none; }
  .trust-strip { grid-template-columns: 1fr; gap: 11px; margin-top: 34px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 74px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px 24px 22px;
    background: rgba(255, 255, 255, .98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-link { padding: 12px 16px; }
  .nav-link::after { display: none; }
  .nav-cta { margin: 8px 0 0; text-align: center; }

  .adv-grid { grid-template-columns: 1fr; }
  .modal-body { padding: 28px 22px 30px; }
  .modal-head { flex-direction: column; align-items: flex-start; gap: 12px; padding-right: 0; }
  .modal-icon { width: 58px; height: 58px; }
  .modal-name { font-size: 22px; }
  .sub-title { margin: 52px 0 32px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .product-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; gap: 26px; }
  .hero-actions .btn { flex: 1; }
  .footer-inner { flex-direction: column; }
  .shots-list { grid-template-columns: 1fr 1fr; }
  .hero-visual { height: 300px; }
  .fc-3, .fc-4 { display: none; }
  .fc-1 { top: 4%; left: 0; }
  .fc-2 { top: 24%; right: 0; }
}

/* ========== 减少动效偏好 ========== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .anim { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}