/* ==========================================================
   苏州信光智能科技 · 门户网站样式
   配色：LOF 品牌青绿 #009898（取自官方 Logo 主色）+ 流光青 #2BE8C8
   ========================================================== */

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  background: #ffffff; color: #0f172a; line-height: 1.7; overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }

:root {
  /* 品牌色：取自 LOF 官方 Logo 主色 #009898，按用途分三档明度 */
  --brand: #00807F;        /* 白底正文/小字用，对比度 4.8:1 */
  --brand-mid: #009898;    /* Logo 原色，用于渐变与图形 */
  --brand-deep: #00636B;
  --brand-dark: #004A52;
  --accent: #2BE8C8;       /* 流光青，深底高亮 */
  --accent-soft: #9BF3E4;
  --ink: #05171D;
  --text: #0F172A;
  --text-2: #475569;
  --text-3: #7A879B;
  --bg: #FFFFFF;
  --bg-soft: #F2FBFA;
  --bg-soft2: #E6F7F5;
  --border: #DBEDEA;
  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --sh-sm: 0 1px 2px rgba(0,166,161,.05);
  --sh: 0 6px 28px rgba(0,80,92,.08);
  --sh-lg: 0 18px 56px rgba(0,80,92,.14);
  --grad: linear-gradient(135deg, #00807F 0%, #00B39C 100%);
  --grad-text: linear-gradient(118deg, #006D72 0%, #009898 54%, #17CEB4 100%);
  --grad-soft: linear-gradient(135deg, rgba(0,152,152,.10) 0%, rgba(43,232,200,.10) 100%);
  --maxw: 1200px;
  --ease: cubic-bezier(.22,.61,.36,1);
  --nav-h: 76px;
}

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

/* 渐变文字 */
.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
/* 深色底上改用高亮青绿，保证可读性与发光感 */
.hero .grad-text,
.cta-section .grad-text,
.footer .grad-text {
  background: linear-gradient(118deg, #4DEBCE 0%, #9BF3E4 100%);
  -webkit-background-clip: text; background-clip: text;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; font-weight: 600; letter-spacing: .01em;
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), background .28s var(--ease), color .28s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; transition: transform .28s var(--ease); }
.btn:hover svg { transform: translateX(4px); }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { width: 100%; padding: 14px 24px; font-size: 16px; }

.btn-primary {
  color: #fff; background: var(--grad);
  box-shadow: 0 8px 24px rgba(0,166,161,.28);
  position: relative; overflow: hidden;
}
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 20%, rgba(255,255,255,.45) 50%, transparent 80%);
  transform: translateX(-120%); transition: transform .7s var(--ease);
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(0,166,161,.36); }

.btn-ghost {
  color: #fff; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.28);
  backdrop-filter: blur(10px);
}
.btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-2px); }

/* ===== 导航 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: background .3s var(--ease), box-shadow .3s var(--ease), padding .3s var(--ease);
  padding: 14px 0;
}
.navbar.scrolled {
  padding: 8px 0;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  box-shadow: 0 2px 20px rgba(0,80,92,.08);
}
.navbar.scrolled .nav-link { color: var(--text-2); }
.navbar.scrolled .nav-link:hover, .navbar.scrolled .nav-link.is-active { color: var(--brand); }
.navbar.scrolled .nav-phone { color: var(--text-2); border-color: var(--border); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: grid; place-items: center start; }
.brand-logo { grid-area: 1 / 1; height: 44px; width: auto; display: block; transition: opacity .3s var(--ease); }
.brand-logo-dark { opacity: 0; }
.navbar.scrolled .brand-logo-dark { opacity: 1; }
.navbar.scrolled .brand-logo-light { opacity: 0; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  position: relative; padding: 8px 12px; font-size: 15px; font-weight: 500;
  color: rgba(255,255,255,.86); border-radius: 10px; white-space: nowrap;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.nav-link::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--grad); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link.is-active { color: #fff; }

.nav-actions { display: flex; align-items: center; gap: 14px; }

/* 语言切换 */
.lang-switch {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 7px 13px; border-radius: 999px; font-size: 13px; font-weight: 700;
  color: rgba(255,255,255,.88); border: 1px solid rgba(255,255,255,.28);
  backdrop-filter: blur(8px); letter-spacing: .02em;
  transition: all .25s var(--ease);
}
.lang-switch i { font-style: normal; opacity: .4; }
.lang-switch span { padding: 0 3px; opacity: .5; transition: opacity .25s, color .25s; }
.lang-switch.is-zh .lang-zh, .lang-switch.is-en .lang-en { opacity: 1; color: var(--accent); }
.lang-switch:hover { background: rgba(255,255,255,.12); }
.navbar.scrolled .lang-switch { color: var(--text-2); border-color: var(--border); }
.navbar.scrolled .lang-switch.is-zh .lang-zh,
.navbar.scrolled .lang-switch.is-en .lang-en { color: var(--brand); }
.nav-phone {
  display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 600;
  color: rgba(255,255,255,.9); padding: 7px 14px; border-radius: 999px; white-space: nowrap;
  border: 1px solid rgba(255,255,255,.26); transition: all .25s var(--ease);
}
.nav-phone svg { width: 15px; height: 15px; }
.nav-phone:hover { background: rgba(255,255,255,.12); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: transform .3s var(--ease), opacity .3s; }
.navbar.scrolled .nav-toggle span { background: var(--text); }
.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); }

.nav-progress {
  position: absolute; left: 0; bottom: 0; height: 2px; width: 0%;
  background: var(--grad); box-shadow: 0 0 12px rgba(43,232,200,.6);
  transition: width .1s linear;
}

/* ===== 首屏 ===== */
.hero {
  position: relative; overflow: hidden;
  padding: calc(var(--nav-h) + 72px) 0 0;
  background: radial-gradient(1200px 700px at 78% 8%, #0A6B75 0%, transparent 60%),
              radial-gradient(900px 600px at 10% 92%, #07545D 0%, transparent 62%),
              linear-gradient(160deg, #041A21 0%, #062B34 45%, #051E27 100%);
  color: #fff;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .85; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(60,190,175,.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(60,190,175,.075) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); pointer-events: none; }
.glow-a { width: 520px; height: 520px; top: -140px; right: -80px; background: rgba(0,152,152,.45); animation: floatA 14s ease-in-out infinite; }
.glow-b { width: 420px; height: 420px; bottom: -120px; left: -60px; background: rgba(43,232,200,.3); animation: floatB 18s ease-in-out infinite; }
@keyframes floatA { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-40px,50px)} }
@keyframes floatB { 0%,100%{transform:translate(0,0)} 50%{transform:translate(50px,-40px)} }

.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.02fr .98fr; gap: 56px; align-items: center;
  padding-bottom: 88px;
}

.chip {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 16px; border-radius: 999px; font-size: 13.5px; font-weight: 500;
  background: rgba(255,255,255,.08); border: 1px solid rgba(127,240,255,.3);
  color: #C7F6EC; backdrop-filter: blur(8px);
}
.chip .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px rgba(0,216,255,.18); animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{box-shadow:0 0 0 0 rgba(0,216,255,.4)} 70%{box-shadow:0 0 0 10px rgba(0,216,255,0)} }

.hero h1 {
  margin: 24px 0 20px;
  font-size: clamp(38px, 5.2vw, 62px); line-height: 1.14; font-weight: 800; letter-spacing: -.02em;
}
.hero h1 .grad-text { filter: drop-shadow(0 4px 24px rgba(43,232,200,.28)); }
.hero-sub {
  max-width: 620px; font-size: 16.5px; line-height: 1.85; color: rgba(214,240,238,.82);
}
.hero-sub strong { color: #fff; font-weight: 600; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, auto); gap: 30px;
  margin-top: 46px; padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,.14);
  justify-content: start;
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b {
  font-size: 30px; font-weight: 800; letter-spacing: -.01em;
  background: linear-gradient(180deg, #fff 0%, #93EBDB 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-stats span { font-size: 13px; color: rgba(200,220,255,.7); margin-top: 2px; }

/* 产品界面示意 */
.hero-visual { position: relative; }
.panel {
  background: linear-gradient(160deg, rgba(255,255,255,.10) 0%, rgba(255,255,255,.04) 100%);
  border: 1px solid rgba(120,222,208,.22);
  border-radius: 18px; overflow: hidden;
  box-shadow: 0 30px 70px rgba(0,10,40,.5), inset 0 1px 0 rgba(255,255,255,.14);
  backdrop-filter: blur(14px);
  animation: tiltIn 1.1s var(--ease) both;
}
@keyframes tiltIn { from { opacity: 0; transform: translateY(30px) scale(.97); } to { opacity: 1; transform: none; } }

.panel-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; background: rgba(3,32,38,.55); border-bottom: 1px solid rgba(120,222,208,.16);
}
.panel-bar .tl { display: flex; gap: 6px; }
.panel-bar .tl i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.28); }
.panel-bar .tl i:first-child { background: #FF6B6B; }
.panel-bar .tl i:nth-child(2) { background: #FFD166; }
.panel-bar .tl i:nth-child(3) { background: #4ADE80; }
.panel-title { font-size: 12.5px; color: rgba(220,238,255,.8); letter-spacing: .02em; }
.panel-bar .live { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; letter-spacing: .1em; color: #9BF3E4; }
.panel-bar .live i { width: 7px; height: 7px; border-radius: 50%; background: #00E0A0; box-shadow: 0 0 8px #00E0A0; animation: pulse2 1.6s infinite; }
@keyframes pulse2 { 0%,100%{opacity:1} 50%{opacity:.35} }

.panel-body { padding: 20px; }
.pv-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 16px; }
.pv-label { display: block; font-size: 12.5px; color: rgba(178,232,224,.68); }
.pv-value {
  display: block; font-size: 40px; font-weight: 800; line-height: 1.1; letter-spacing: -.02em;
  background: linear-gradient(135deg, #FFFFFF 0%, #9BF3E4 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.pv-value i { font-style: normal; font-size: 18px; }
.pv-trend { font-size: 13px; font-weight: 700; color: #4ADE80; padding-bottom: 8px; }

.pv-bars { display: flex; align-items: flex-end; gap: 6px; height: 74px; margin-bottom: 18px; }
.pv-bars i {
  flex: 1; height: var(--h); border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #2BE8C8 0%, rgba(0,166,161,.55) 100%);
  animation: barGrow 1.2s var(--ease) both; transform-origin: bottom;
}
@keyframes barGrow { from { transform: scaleY(0); opacity: 0; } to { transform: scaleY(1); opacity: 1; } }

.pv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.pv-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(120,222,208,.16);
  border-radius: 10px; padding: 11px 12px;
}
.pv-card span { display: block; font-size: 11.5px; color: rgba(178,232,224,.66); }
.pv-card b { display: block; font-size: 19px; font-weight: 700; color: #fff; margin: 2px 0 8px; }
.pv-mini { height: 4px; border-radius: 4px; background: rgba(255,255,255,.12); overflow: hidden; }
.pv-mini i { display: block; height: 100%; width: var(--w); border-radius: 4px; background: var(--grad); }

.pv-list li {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: 9px; font-size: 13px; color: rgba(214,240,238,.9);
  background: rgba(255,255,255,.04); margin-bottom: 7px;
}
.pv-list .st { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.pv-list .st.ok { background: #22E08F; box-shadow: 0 0 8px rgba(34,224,143,.6); }
.pv-list .st.wn { background: #FFC24B; box-shadow: 0 0 8px rgba(255,194,75,.55); }
.pv-list li em { font-style: normal; color: rgba(178,232,224,.6); margin-left: auto; font-size: 12px; }
.pv-list li i { font-style: normal; font-weight: 700; color: #9BF3E4; min-width: 40px; text-align: right; }

.float-card {
  position: absolute; display: flex; align-items: center; gap: 11px;
  padding: 12px 16px; border-radius: 14px;
  background: rgba(10,32,72,.82); border: 1px solid rgba(127,240,255,.28);
  backdrop-filter: blur(14px); box-shadow: 0 16px 40px rgba(0,10,40,.45);
  animation: floaty 5s ease-in-out infinite;
}
.float-card svg { width: 22px; height: 22px; color: var(--accent); flex: none; }
.float-card b { display: block; font-size: 13.5px; color: #fff; font-weight: 700; }
.float-card span { display: block; font-size: 11.5px; color: rgba(178,232,224,.7); }
.f1 { left: -34px; bottom: 74px; }
.f2 { right: -26px; top: 58px; animation-delay: -2.5s; }
@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* 跑马灯 */
.marquee {
  position: relative; z-index: 2; overflow: hidden;
  padding: 18px 0; border-top: 1px solid rgba(120,222,208,.14);
  background: rgba(2,26,32,.5);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee-track { display: flex; align-items: center; gap: 28px; width: max-content; animation: scroll 34s linear infinite; }
.marquee-track span { font-size: 14px; font-weight: 600; color: rgba(198,236,232,.78); letter-spacing: .04em; white-space: nowrap; }
.marquee-track i { color: rgba(0,216,255,.55); font-size: 9px; font-style: normal; }
@keyframes scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== 通用区块 ===== */
.section { padding: 104px 0; position: relative; }
.section-soft { background: var(--bg-soft); }
.section-soft::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(700px 340px at 15% 0%, rgba(0,166,161,.06), transparent 70%);
}

.sec-head { margin-bottom: 56px; max-width: 780px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .2em;
  color: var(--brand); background: var(--grad-soft);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.sec-head h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.28; font-weight: 800; letter-spacing: -.02em; }
.sec-head p { margin-top: 16px; font-size: 16px; color: var(--text-2); line-height: 1.85; }

/* ===== 产品卡片 ===== */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-grid-6 { grid-template-columns: repeat(3, 1fr); }
.pcard {
  position: relative; padding: 30px 26px 26px; border-radius: var(--r-lg);
  background: #fff; border: 1px solid var(--border);
  box-shadow: var(--sh-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  overflow: hidden;
}
.pcard::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .4s var(--ease);
  background: radial-gradient(420px 240px at var(--mx, 50%) var(--my, 0%), rgba(0,166,161,.13), transparent 70%);
}
.pcard:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); border-color: rgba(0,166,161,.28); }
.pcard:hover::before { opacity: 1; }

.pcard-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  background: var(--grad); color: #fff;
  box-shadow: 0 8px 20px rgba(0,166,161,.26);
  transition: transform .4s var(--ease);
}
.pcard:hover .pcard-ico { transform: rotate(-6deg) scale(1.06); }
.pcard-ico svg { width: 25px; height: 25px; }

.pcard h3 { font-size: 19px; font-weight: 700; letter-spacing: -.01em; position: relative; }
.pcard-en { display: block; font-size: 11.5px; font-weight: 600; letter-spacing: .1em; color: var(--text-3); margin: 6px 0 14px; text-transform: uppercase; }
.pcard p { font-size: 14.5px; color: var(--text-2); line-height: 1.8; min-height: 105px; position: relative; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0 20px; position: relative; }
.tags li {
  font-size: 12px; padding: 4px 10px; border-radius: 6px;
  background: var(--bg-soft2); color: #1B9CA6; font-weight: 500;
}
.pcard-link {
  display: inline-flex; align-items: center; gap: 6px; position: relative;
  font-size: 14px; font-weight: 600; color: var(--brand);
  transition: gap .3s var(--ease);
}
.pcard-link svg { width: 16px; height: 16px; }
.pcard:hover .pcard-link { gap: 12px; }

/* ===== 解决方案 Tabs ===== */
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 40px; }
.tab {
  padding: 10px 22px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  color: var(--text-2); background: #fff; border: 1px solid var(--border);
  transition: all .3s var(--ease);
}
.tab:hover { color: var(--brand); border-color: rgba(0,166,161,.4); transform: translateY(-2px); }
.tab.is-active {
  color: #fff; background: var(--grad); border-color: transparent;
  box-shadow: 0 8px 22px rgba(0,166,161,.28);
}

.tab-panel { display: none; }
.tab-panel.is-active { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; animation: fadeUp .55s var(--ease) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

.tp-copy h3 { font-size: 26px; font-weight: 800; letter-spacing: -.02em; line-height: 1.4; }
.tp-copy > p { margin-top: 14px; font-size: 15.5px; color: var(--text-2); line-height: 1.85; }
.tp-list { margin: 24px 0 0; display: grid; gap: 12px; }
.tp-list li {
  position: relative; padding-left: 26px; font-size: 14.5px; color: var(--text-2); line-height: 1.7;
}
.tp-list li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad-soft); border: 2px solid var(--brand);
}
.tp-list li b { color: var(--text); font-weight: 700; margin-right: 8px; }

.tp-metrics { display: flex; gap: 34px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }
.tp-metrics b {
  display: block; font-size: 27px; font-weight: 800; letter-spacing: -.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.tp-metrics span { font-size: 12.5px; color: var(--text-3); }

.tp-visual {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 26px; box-shadow: var(--sh);
}
.tp-strip { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.tp-strip span { font-size: 12.5px; font-weight: 600; color: var(--brand); background: var(--bg-soft2); padding: 6px 12px; border-radius: 8px; }
.tp-strip i { width: 14px; height: 2px; background: linear-gradient(90deg, var(--brand), var(--accent)); border-radius: 2px; }

.tp-bars { display: grid; gap: 14px; }
.tp-bars > div { display: grid; grid-template-columns: 96px 1fr 44px; align-items: center; gap: 12px; }
.tp-bars span { font-size: 13px; color: var(--text-2); }
.tp-bars i {
  height: 9px; border-radius: 999px; background: var(--bg-soft2); position: relative; overflow: hidden; display: block;
}
.tp-bars i::after {
  content: ""; position: absolute; inset: 0 auto 0 0; width: var(--w);
  background: var(--grad); border-radius: 999px;
  transition: width 1s var(--ease);
}
.tp-bars b { font-size: 13.5px; font-weight: 700; color: var(--brand); text-align: right; }

.tp-note {
  margin-top: 20px; padding: 12px 14px; border-radius: 10px; font-size: 13px;
  background: linear-gradient(135deg, rgba(0,166,161,.07), rgba(43,232,200,.07));
  color: var(--brand-deep); border-left: 3px solid var(--brand);
}

.tp-devices { display: grid; gap: 11px; }
.tpd {
  display: grid; grid-template-columns: 64px 10px 52px 1fr; align-items: center; gap: 12px;
  padding: 12px 14px; border-radius: 11px; background: var(--bg-soft); border: 1px solid var(--border);
}
.tpd span { font-size: 13px; font-weight: 700; color: var(--text); }
.tpd i { width: 9px; height: 9px; border-radius: 50%; }
.tpd i.ok { background: #22C55E; box-shadow: 0 0 8px rgba(34,197,94,.5); }
.tpd i.wn { background: #F59E0B; box-shadow: 0 0 8px rgba(245,158,11,.5); }
.tpd i.er { background: #EF4444; box-shadow: 0 0 8px rgba(239,68,68,.5); }
.tpd b { font-size: 13px; font-weight: 600; color: var(--brand); }
.tpd em { font-style: normal; font-size: 12.5px; color: var(--text-3); }

.tp-curve { margin-bottom: 18px; }
.tp-curve svg { width: 100%; height: 130px; display: block; }
.tp-legend { display: flex; gap: 18px; font-size: 12px; color: var(--text-3); margin-top: 6px; }
.tp-legend i { display: inline-block; width: 16px; height: 3px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }
.tp-legend .l1 { background: var(--brand); }
.tp-legend .l2 { background: var(--accent); }

.tp-chain { display: grid; gap: 10px; }
.tpc {
  display: grid; grid-template-columns: 26px 1fr; gap: 8px 12px; align-items: center;
  padding: 13px 15px; border-radius: 11px; background: var(--bg-soft); border: 1px solid var(--border);
  position: relative;
}
.tpc i {
  grid-row: span 2; width: 26px; height: 26px; border-radius: 50%;
  background: var(--grad); color: #fff; font-style: normal; font-size: 12.5px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.tpc b { font-size: 14px; font-weight: 700; }
.tpc span { font-size: 12.5px; color: var(--text-3); }

.tp-secure { display: grid; gap: 12px; }
.tps {
  display: flex; align-items: center; gap: 14px; padding: 16px 18px;
  border-radius: 13px; background: var(--bg-soft); border: 1px solid var(--border);
}
.tps i {
  width: 42px; height: 42px; flex: none; border-radius: 11px;
  background: var(--grad-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
}
.tps i svg { width: 21px; height: 21px; }
.tps b { display: block; font-size: 14.5px; font-weight: 700; }
.tps span { font-size: 12.5px; color: var(--text-3); }

/* ===== 实施流程 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 42px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,166,161,.28) 12%, rgba(43,232,200,.28) 88%, transparent);
}
.step { position: relative; padding-top: 0; }
.step-no {
  display: flex; align-items: center; justify-content: center;
  width: 66px; height: 66px; margin: 0 auto 22px; border-radius: 50%;
  font-size: 21px; font-weight: 800; letter-spacing: -.01em; color: var(--brand);
  background: #fff; border: 2px solid rgba(0,166,161,.22); position: relative; z-index: 2;
  box-shadow: 0 8px 24px rgba(0,166,161,.14);
  transition: transform .4s var(--ease), color .4s var(--ease), background .4s var(--ease);
}
.step:hover .step-no { background: var(--grad); color: #fff; transform: scale(1.08) rotate(-4deg); border-color: transparent; }
.step h3 { text-align: center; font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.step p { text-align: center; font-size: 14px; color: var(--text-2); line-height: 1.8; }
.step ul { margin-top: 16px; display: grid; gap: 8px; }
.step ul li {
  text-align: center; font-size: 13px; color: var(--text-2);
  padding: 7px 10px; border-radius: 8px; background: var(--bg-soft);
}

/* ===== 客户案例 ===== */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case {
  background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 30px 28px; box-shadow: var(--sh-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
  position: relative; overflow: hidden;
}
.case::after {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.case:hover { transform: translateY(-8px); box-shadow: var(--sh-lg); }
.case:hover::after { transform: scaleX(1); }
.case-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.case-tag {
  font-size: 12px; font-weight: 700; color: var(--brand);
  background: var(--grad-soft); padding: 5px 12px; border-radius: 999px;
}
.case-place { font-size: 12px; color: var(--text-3); }
.case h3 { font-size: 18.5px; font-weight: 700; line-height: 1.5; margin-bottom: 12px; }
.case p { font-size: 14.5px; color: var(--text-2); line-height: 1.8; }
.case-nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; padding-top: 22px; border-top: 1px dashed var(--border); }
.case-nums b {
  display: block; font-size: 22px; font-weight: 800; letter-spacing: -.02em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.case-nums span { font-size: 11.5px; color: var(--text-3); line-height: 1.5; display: block; }

/* ===== 资质荣誉 ===== */
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.honor {
  display: flex; align-items: center; gap: 16px; padding: 24px 26px;
  border-radius: var(--r); background: var(--bg-soft); border: 1px solid var(--border);
  transition: all .35s var(--ease);
}
.honor:hover { background: #fff; border-color: rgba(0,166,161,.3); box-shadow: var(--sh); transform: translateY(-4px); }
.honor-ico {
  width: 46px; height: 46px; flex: none; border-radius: 12px;
  background: #fff; color: var(--brand); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}
.honor-ico svg { width: 22px; height: 22px; }
.honor b { display: block; font-size: 15.5px; font-weight: 700; }
.honor span { font-size: 12.5px; color: var(--text-3); }

/* ===== CTA / 联系 ===== */
.cta-section {
  background: linear-gradient(170deg, #062B34 0%, #051E27 100%);
  color: #fff; position: relative; overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(60,190,175,.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(60,190,175,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 30%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000, transparent 75%);
}
.cta-glow {
  position: absolute; width: 620px; height: 620px; border-radius: 50%;
  top: -220px; left: 50%; margin-left: -310px;
  background: radial-gradient(circle, rgba(0,166,161,.4), transparent 65%);
  filter: blur(60px);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section .eyebrow { color: #9BF3E4; background: rgba(127,240,255,.12); }
.cta-box {
  display: grid; grid-template-columns: 1fr .92fr; gap: 56px; align-items: start;
}
.cta-copy h2 { font-size: clamp(28px, 3.2vw, 38px); line-height: 1.35; font-weight: 800; letter-spacing: -.02em; }
.cta-copy > p { margin-top: 16px; font-size: 15.5px; color: rgba(214,240,238,.78); line-height: 1.85; max-width: 520px; }

.contact-list { margin-top: 34px; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-list svg {
  width: 20px; height: 20px; flex: none; color: var(--accent);
  padding: 9px; width: 38px; height: 38px; border-radius: 10px;
  background: rgba(127,240,255,.1); border: 1px solid rgba(127,240,255,.2);
}
.contact-list b { display: block; font-size: 14px; font-weight: 600; color: #fff; }
.contact-list span { font-size: 13.5px; color: rgba(198,236,232,.7); line-height: 1.6; display: block; }
.contact-list a:hover { color: var(--accent); }

.cta-form {
  background: rgba(255,255,255,.05); border: 1px solid rgba(120,222,208,.2);
  border-radius: var(--r-lg); padding: 32px; backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(0,10,40,.4);
}
.cta-form h3 { font-size: 20px; font-weight: 700; }
.cta-form > p { font-size: 13px; color: rgba(198,236,232,.65); margin: 6px 0 22px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 500; color: rgba(214,240,238,.86); margin-bottom: 7px; }
.field label i { color: #FF8A8A; font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; font-size: 14px;
  background: rgba(3,32,38,.55); border: 1px solid rgba(120,222,208,.22);
  color: #fff; outline: none; transition: border-color .25s, box-shadow .25s, background .25s;
}
.field textarea { resize: vertical; min-height: 78px; }
.field select option { background: #08343C; color: #fff; }
.field input::placeholder, .field textarea::placeholder { color: rgba(190,215,255,.4); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,216,255,.15); background: rgba(3,32,38,.8);
}
.field.err input { border-color: #FF8A8A; }
.form-tip { margin-top: 12px; font-size: 12px; color: rgba(178,232,224,.55); line-height: 1.6; }
.form-tip.ok { color: #6BEFA8; }
.form-tip.bad { color: #FF9B9B; }

.form-alt {
  margin-top: 10px; padding-top: 12px; border-top: 1px dashed rgba(120,222,208,.18);
  font-size: 12px; color: rgba(178,232,224,.6); line-height: 1.65;
}
.alt-phone { color: var(--accent); font-weight: 700; }
.alt-phone:hover { text-decoration: underline; }

/* 案例注脚 */
.case-note {
  margin-top: 28px; text-align: center;
  font-size: 12.5px; color: var(--text-3); line-height: 1.7;
}
.case-note i { font-style: normal; color: var(--brand); font-weight: 700; margin-right: 4px; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 24px; bottom: 28px; z-index: 900;
  width: 46px; height: 46px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; background: var(--grad);
  box-shadow: 0 10px 28px rgba(0,166,161,.34);
  opacity: 0; visibility: hidden; transform: translateY(14px) scale(.9);
  transition: opacity .35s var(--ease), transform .35s var(--ease), visibility .35s;
}
.to-top svg { width: 20px; height: 20px; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { transform: translateY(-3px); }
.to-top:hover svg { animation: nudge .6s var(--ease); }
@keyframes nudge { 0%,100%{transform:translateY(0)} 45%{transform:translateY(-4px)} }

/* ===== 页脚 ===== */
.footer { background: #02151A; color: rgba(198,236,232,.72); padding: 64px 0 0; }
.footer-inner { display: grid; grid-template-columns: 1.3fr 2fr; gap: 56px; padding-bottom: 44px; }
.footer-logo { height: 40px; width: auto; display: block; margin-bottom: 6px; }
.footer-brand p { margin-top: 18px; font-size: 13.5px; line-height: 1.85; max-width: 460px; }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.footer-cols h4 { font-size: 14.5px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-cols ul { display: grid; gap: 10px; }
.footer-cols li, .footer-cols a { font-size: 13px; line-height: 1.7; }
.footer-cols a { transition: color .25s; }
.footer-cols a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 20px 24px; border-top: 1px solid rgba(120,222,208,.12);
  font-size: 12.5px; color: rgba(190,215,255,.5);
}

/* ===== 滚动入场 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .1s; }
.reveal[data-delay="2"] { transition-delay: .2s; }
.reveal[data-delay="3"] { transition-delay: .3s; }
.reveal[data-delay="4"] { transition-delay: .4s; }
.reveal[data-delay="5"] { transition-delay: .5s; }

/* ===== 响应式 ===== */
@media (max-width: 1080px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid-6 { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .f1 { left: -10px; }
  .f2 { right: -10px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: 100%; left: 16px; right: 16px;
    background: #fff; border-radius: var(--r); padding: 12px;
    box-shadow: var(--sh-lg); border: 1px solid var(--border);
  }
  .nav-links.open .nav-link { color: var(--text); padding: 12px 14px; }
  .nav-links.open .nav-link::after { display: none; }
  .nav-links.open .nav-link.is-active { background: var(--bg-soft2); color: var(--brand); }
  .nav-phone { display: none; }
}

@media (max-width: 900px) {
  .section { padding: 76px 0; }
  .tab-panel.is-active { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
  .steps::before { display: none; }
  .case-grid { grid-template-columns: 1fr; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-box { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 680px) {
  .container { padding: 0 18px; }
  .hero { padding-top: calc(var(--nav-h) + 44px); }
  .hero-inner { padding-bottom: 60px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px 18px; }
  .hero-btns .btn { flex: 1 1 auto; }
  .product-grid { grid-template-columns: 1fr; }
  .product-grid-6 { grid-template-columns: 1fr; }
  .pcard p { min-height: auto; }
  .honor-grid { grid-template-columns: 1fr; }
  .tp-metrics { gap: 22px; flex-wrap: wrap; }
  .tp-bars > div { grid-template-columns: 80px 1fr 40px; }
  .tpd { grid-template-columns: 56px 10px 48px 1fr; gap: 8px; font-size: 12px; }
  .tpd em { display: none; }
  .float-card { display: none; }
  .pv-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-form { padding: 24px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .to-top { right: 14px; bottom: 16px; width: 42px; height: 42px; }
  .case-note { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}