/* ==========================================================================
   山东诺亚德环保工程有限公司 · 官网样式
   纯静态站（无框架、无数据库），适配 nginx 直接托管
   ========================================================================== */

:root {
  --ink: #0d1b2a;
  --ink-2: #33475b;
  --muted: #6a7f92;
  --brand: #0f6b57;
  --brand-2: #1a9e7d;
  --brand-3: #0a4c3e;
  --brand-soft: #eaf5f1;
  --gold: #c19a4b;
  --bg: #f6f9f8;
  --white: #ffffff;
  --line: #e2ebe7;
  --radius: 14px;
  --shadow-sm: 0 2px 10px rgba(13, 27, 42, .05);
  --shadow: 0 10px 34px rgba(13, 27, 42, .08);
  --max: 1180px;
  --header-h: 74px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
               "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

/* 图片不可点击放大、不可拖拽、不可选中（证书与案例图均按此处理） */
img {
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  pointer-events: none;
}
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* ---------------------------------------------------------------- 顶栏 */
.topbar {
  background: var(--brand-3);
  color: rgba(255, 255, 255, .82);
  font-size: 13.5px;
  letter-spacing: .2px;
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 38px; gap: 16px; flex-wrap: wrap;
}
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; gap: 20px; align-items: center; }

/* ---------------------------------------------------------------- 页头 */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h); gap: 20px;
}
.logo { display: flex; align-items: center; gap: 11px; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 11px; flex: 0 0 auto;
  background: linear-gradient(140deg, var(--brand-2), var(--brand));
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 6px 16px rgba(15, 107, 87, .28);
}
.logo-mark svg { width: 22px; height: 22px; }
.logo-txt strong {
  display: block; font-size: 17.5px; letter-spacing: .5px; line-height: 1.25;
}
.logo-txt span {
  display: block; font-size: 11px; color: var(--muted);
  letter-spacing: 1.6px; text-transform: uppercase; line-height: 1.4;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  display: block; padding: 9px 14px; border-radius: 9px;
  font-size: 15px; color: var(--ink-2); transition: .18s;
  white-space: nowrap;
}
.nav a:hover { color: var(--brand); background: var(--brand-soft); }
.nav a.active { color: var(--brand); font-weight: 600; background: var(--brand-soft); }
.nav .nav-cta {
  margin-left: 8px; background: var(--brand); color: #fff !important;
  font-weight: 600; padding: 10px 18px;
}
.nav .nav-cta:hover { background: var(--brand-3); }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 10px; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--ink);
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px;
  background: var(--ink);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

/* ---------------------------------------------------------------- 首屏 */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1100px 520px at 78% -12%, rgba(26, 158, 125, .55), transparent 62%),
    radial-gradient(900px 460px at 6% 108%, rgba(193, 154, 75, .22), transparent 60%),
    linear-gradient(150deg, #0a3b31 0%, #0d5346 42%, #0f6b57 100%);
}
.hero::after {
  content: ""; position: absolute; inset: 0; opacity: .16; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: radial-gradient(circle at 68% 34%, #000, transparent 72%);
          mask-image: radial-gradient(circle at 68% 34%, #000, transparent 72%);
}
.hero .wrap { position: relative; z-index: 2; padding-top: 86px; padding-bottom: 92px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; letter-spacing: 2.6px; text-transform: uppercase;
  color: rgba(255, 255, 255, .78);
  border: 1px solid rgba(255, 255, 255, .28);
  padding: 7px 15px; border-radius: 999px; margin-bottom: 26px;
}
.hero-eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand-2); box-shadow: 0 0 0 4px rgba(26, 158, 125, .25);
}
.hero h1 {
  margin: 0 0 20px; font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.22; letter-spacing: -.5px; font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #8ff0cf, #d8f3e5);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  max-width: 660px; margin: 0 0 34px; font-size: 17px;
  color: rgba(255, 255, 255, .84); line-height: 1.85;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 11px; font-size: 15.5px;
  font-weight: 600; transition: .2s; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: #fff; color: var(--brand-3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(0, 0, 0, .2); }
.btn-ghost { border-color: rgba(255, 255, 255, .42); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin-top: 62px; border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: 30px;
}

/* 首屏双栏：左文案右插画（青岛 × 环保） */
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 40px; align-items: center;
}
.hero-copy .lead { max-width: 540px; }
.hero-copy h1 { font-size: clamp(28px, 3.6vw, 46px); }
.hero-art { display: flex; justify-content: center; }
.hero-art svg {
  width: 100%; max-width: 500px; height: auto; display: block;
  filter: drop-shadow(0 14px 34px rgba(0, 0, 0, .18));
  animation: hero-float 6.5s ease-in-out infinite;
}
@keyframes hero-float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

/* ---------------- 首页插画内部动效 ---------------- */
.hero-art svg g,
.hero-art svg circle,
.hero-art svg path { transform-box: view-box; }

/* 背景虚环慢速旋转 */
.halo-spin { animation: spin-slow 48s linear infinite; transform-origin: 292px 196px; }

/* 太阳光芒 */
.sun { animation: sun-breathe 7s ease-in-out infinite; transform-origin: 112px 92px; }
.sun-rays { animation: spin-slow 34s linear infinite; transform-origin: 112px 92px; }

/* 海鸥：外层漂移 + 内层振翅（分开两层，避免两个动画抢同一个 transform） */
.gull-1 { animation: gull-drift-a 17s ease-in-out infinite; }
.gull-2 { animation: gull-drift-b 23s ease-in-out infinite; }
.gull-3 { animation: gull-drift-c 19s ease-in-out infinite; }
.gull path {
  transform-box: fill-box; transform-origin: center;
  animation: gull-flap 1.5s ease-in-out infinite;
}
.gull-2 path { animation-duration: 1.9s; animation-delay: .35s; }
.gull-3 path { animation-duration: 1.7s; animation-delay: .7s; }
@keyframes gull-flap {
  0%, 100% { transform: scaleY(1); }
  50%      { transform: scaleY(.5); }
}
@keyframes gull-drift-a {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(16px, -7px); }
}
@keyframes gull-drift-b {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(-13px, 6px); }
}
@keyframes gull-drift-c {
  0%, 100% { transform: translate(0, 0); }
  50%      { transform: translate(-20px, -6px); }
}

/* 中央水滴：呼吸 + 循环箭头旋转 */
.drop-core { animation: drop-breathe 5.5s ease-in-out infinite; transform-origin: 292px 196px; }
.drop-arrow { animation: spin-slow 11s linear infinite; transform-origin: 292px 206px; }
.drop-highlight { animation: highlight-fade 4s ease-in-out infinite; }

/* 海浪：三层不同速度、不同方向（周期固定 280，位移 ±280 无缝） */
.wave-back  { animation: wave-left  19s linear infinite; }
.wave-mid   { animation: wave-right 13s linear infinite; }
.wave-front { animation: wave-left  8.5s linear infinite; }
@keyframes wave-left  { from { transform: translateX(0); } to { transform: translateX(-280px); } }
@keyframes wave-right { from { transform: translateX(0); } to { transform: translateX(280px); } }

/* 回澜阁灯光 */
.lantern   { animation: lantern-glow 2.8s ease-in-out infinite; }
.lantern-2 { animation-delay: 1.4s; }

/* 帆船随浪起伏 */
.boat {
  animation: boat-bob 5.2s ease-in-out infinite;
  transform-origin: 425px 358px;
}
.wake { animation: wake-sway 5.2s ease-in-out infinite; }

/* 气泡上浮 */
.bubble   { animation: bubble-rise 6.5s ease-in infinite; }
.bubble-2 { animation-duration: 8s; animation-delay: 1.8s; }
.bubble-3 { animation-duration: 7.2s; animation-delay: 3.1s; }

@keyframes spin-slow { to { transform: rotate(360deg); } }
@keyframes sun-breathe {
  0%, 100% { opacity: .82; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.05); }
}
@keyframes drop-breathe {
  0%, 100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-5px) scale(1.015); }
}
@keyframes highlight-fade {
  0%, 100% { opacity: .25; }
  50%      { opacity: .75; }
}
@keyframes lantern-glow {
  0%, 100% { opacity: .3; }
  50%      { opacity: 1;  }
}
@keyframes boat-bob {
  0%, 100% { transform: translateY(0) rotate(-1.4deg); }
  50%      { transform: translateY(-7px) rotate(1.4deg); }
}
@keyframes wake-sway {
  0%, 100% { opacity: .45; transform: translateX(0); }
  50%      { opacity: .15; transform: translateX(-6px); }
}
@keyframes bubble-rise {
  0%   { opacity: 0;   transform: translateY(0); }
  25%  { opacity: .7; }
  100% { opacity: 0;   transform: translateY(-70px); }
}

/* 尊重系统「减少动态效果」 */
@media (prefers-reduced-motion: reduce) {
  .hero-art svg,
  .hero-art svg * {
    animation: none !important;
  }
}
.hero-stats div { padding-right: 20px; }
.hero-stats b {
  display: block; font-size: 30px; line-height: 1.1; font-weight: 700;
  letter-spacing: -.5px;
}
.hero-stats span { font-size: 13px; color: rgba(255, 255, 255, .66); }

/* ---------------------------------------------------------------- 通用区块 */
.section { padding: 82px 0; }
.section.alt { background: var(--bg); }
.section-head { max-width: 760px; margin-bottom: 44px; }
.eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 2.8px;
  text-transform: uppercase; color: var(--brand-2); font-weight: 600;
  margin-bottom: 13px;
}
.section-head h2 {
  margin: 0 0 15px; font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3; letter-spacing: -.3px;
}
.section-head p { margin: 0; color: var(--muted); font-size: 16px; }

/* ---------------------------------------------------------------- 卡片 */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: .22s; height: 100%;
}
.card:hover { border-color: #cfe4dc; box-shadow: var(--shadow); transform: translateY(-3px); }
.card .ico {
  width: 48px; height: 48px; border-radius: 12px; display: grid;
  place-items: center; background: var(--brand-soft); color: var(--brand);
  margin-bottom: 18px;
}
.card .ico svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 10px; font-size: 18.5px; letter-spacing: -.2px; }
.card p { margin: 0; color: var(--muted); font-size: 14.8px; line-height: 1.8; }
.card ul.tick { margin-top: 14px; }
.card ul.tick li {
  position: relative; padding-left: 20px; font-size: 14.2px;
  color: var(--ink-2); line-height: 2;
}
.card ul.tick li::before {
  content: ""; position: absolute; left: 0; top: .78em;
  width: 7px; height: 7px; border-radius: 2px;
  background: var(--brand-2); transform: rotate(45deg);
}

/* 优势条（图标 + 标题 + 一行说明） */
.feature {
  display: flex; gap: 15px; align-items: flex-start;
  padding: 22px 0; border-top: 1px solid var(--line);
}
.feature:first-child { border-top: 0; }
.feature .num {
  flex: 0 0 auto; font-size: 13px; font-weight: 700; color: var(--brand-2);
  width: 30px; padding-top: 3px; letter-spacing: 1px;
}
.feature h4 { margin: 0 0 5px; font-size: 16.5px; }
.feature p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* ---------------------------------------------------------------- 案例卡 */
.case-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: #fff; transition: .22s; height: 100%;
  display: flex; flex-direction: column;
}
.case-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: #cfe4dc; }
.case-thumb {
  aspect-ratio: 16 / 10; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #0d5346, #1a9e7d);
}
.case-thumb::after {
  content: ""; position: absolute; inset: 0; opacity: .14;
  background-image:
    linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 34px 34px;
}
.case-art {
  position: relative; z-index: 1;
  width: 100%; height: 100%; display: block;
}
.case-art text {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  font-weight: 600;
}
.case-tag {
  position: absolute; z-index: 2; top: 12px; right: 12px;
  font-size: 10.6px; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase; color: rgba(255, 255, 255, .93);
  background: rgba(6, 40, 33, .45);
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px; padding: 4px 10px;
}

/* 案例示意图动效 */
.cd-loop  { animation: dash-spin 6s linear infinite; }
.cd-pipe  { animation: dash-flow 3s linear infinite; }
.cd-gear  { animation: spin-slow 14s linear infinite; transform-origin: 200px 125px; }
.cd-bub   { animation: bubble-rise 5.5s ease-in infinite; }
.cd-b2    { animation-duration: 7s;   animation-delay: 1.5s; }
.cd-b3    { animation-duration: 6.2s; animation-delay: 3s; }
@keyframes dash-spin { to { stroke-dashoffset: -64; } }
@keyframes dash-flow { to { stroke-dashoffset: -45; } }

@media (prefers-reduced-motion: reduce) {
  .cd-loop, .cd-pipe, .cd-gear, .cd-bub { animation: none; }
}

/* ---------------------------------------------------------------- 动态插画 */
.card-art, .banner-art { width: 100%; height: 100%; display: block; }
.card-art text, .banner-art text {
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  font-weight: 600;
}

/* 场景带 / 横幅外框 */
.art-band {
  position: relative; overflow: hidden; border-radius: 16px;
  background: linear-gradient(140deg, #0a3b31, #0f6b57);
  box-shadow: 0 14px 34px rgba(10, 59, 49, .20);
  margin: 8px 0 34px;
}
.art-band::after {
  content: ""; position: absolute; inset: 0; opacity: .12; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 32px 32px;
}
.art-band .banner-art { position: relative; z-index: 1; }

/* 小号场景带（用于分组内） */
.art-band.sm { border-radius: 14px; margin: 0 0 30px; box-shadow: none; }

/* 页面顶部横幅 */
.art-band.page { margin: 42px 0 0; }
.art-band svg { position: relative; z-index: 1; width: 100%; height: auto; display: block; }

/* 卡片顶部示意图条 */
.art-strip {
  position: relative; overflow: hidden; border-radius: 10px;
  background: linear-gradient(150deg, #0d5346, #1a9e7d);
  aspect-ratio: 420 / 150; margin-bottom: 18px;
}
.art-strip::after {
  content: ""; position: absolute; inset: 0; opacity: .12; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .7) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .7) 1px, transparent 1px);
  background-size: 30px 30px;
}
.art-strip .card-art { position: relative; z-index: 1; }

/* ---------------- 插画内部动效 ---------------- */
.as-liq   { animation: liq-drift 3.4s linear infinite; }
.as-flow  { animation: dash-flow 2.6s linear infinite; }
.as-fall  { animation: pt-fall 3.2s ease-in infinite; }
.as-pulse { animation: soft-pulse 3s ease-in-out infinite; }
.as-steam { animation: steam-rise 4s ease-in-out infinite; }
.as-slide { animation: slide-push 3.6s ease-in-out infinite; }
.as-spin  {
  animation: spin-slow 12s linear infinite;
  transform-box: fill-box; transform-origin: center;
}
.as-wave-l { animation: wave-left  22s linear infinite; }
.as-wave-r { animation: wave-right 16s linear infinite; }

@keyframes liq-drift { to { transform: translateX(-40px); } }
@keyframes pt-fall {
  0%   { opacity: 0; transform: translateY(-6px); }
  25%  { opacity: .85; }
  100% { opacity: 0; transform: translateY(26px); }
}
@keyframes soft-pulse {
  0%, 100% { opacity: .32; }
  50%      { opacity: 1; }
}
@keyframes steam-rise {
  0%   { opacity: 0; transform: translateY(6px); }
  40%  { opacity: .8; }
  100% { opacity: 0; transform: translateY(-14px); }
}
@keyframes slide-push {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(18px); }
}

@media (prefers-reduced-motion: reduce) {
  .as-liq, .as-flow, .as-fall, .as-pulse, .as-steam,
  .as-slide, .as-spin, .as-wave-l, .as-wave-r { animation: none !important; }
}

/* ---------------------------------------------------------------- 工艺链（紧凑胶囊式） */
.flowline-wrap {
  margin-top: 22px; border: 1px solid var(--line); border-radius: 14px;
  background: linear-gradient(180deg, #fbfdfc 0%, #f1f8f5 100%); overflow: hidden;
}
.flowline-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; padding: 11px 18px;
  border-bottom: 1px dashed #d9e8e2;
}
.flowline-head b { font-size: 13.5px; letter-spacing: .4px; color: var(--brand-3); }
.flowline-head i {
  font-style: normal; font-size: 11.8px; color: var(--brand-3);
  background: #fff; border: 1px solid #cfe4dc; border-radius: 999px;
  padding: 3px 11px; white-space: nowrap;
}
.flowline {
  display: flex; flex-wrap: wrap; align-items: center;
  row-gap: 9px; padding: 13px 16px;
}
.fstep {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 13px 6px 8px; border-radius: 999px;
  background: #fff; border: 1px solid #d3e5de;
  font-size: 13px; font-weight: 600; color: var(--ink-2);
  white-space: nowrap; box-shadow: 0 1px 4px rgba(13, 27, 42, .05);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.fstep:hover {
  border-color: var(--brand-2);
  box-shadow: 0 4px 10px rgba(15, 107, 87, .14);
}
.fstep svg { width: 15px; height: 15px; color: var(--brand); flex: 0 0 auto; }
.fstep i {
  font-style: normal; width: 17px; height: 17px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand);
  font-size: 10.5px; font-weight: 700; display: grid; place-items: center;
}
.fstep.end {
  background: linear-gradient(120deg, var(--brand-2), var(--brand));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 12px rgba(15, 107, 87, .28);
}
.fstep.end svg { color: #fff; }
.fstep.end i { background: rgba(255, 255, 255, .22); color: #fff; }
.fsep { display: inline-flex; padding: 0 5px; color: #8fc3b2; flex: 0 0 auto; }
.fsep svg { width: 12px; height: 12px; display: block; }

/* ---------------------------------------------------------------- 图标砖 */
.ico-tile {
  width: 32px; height: 32px; border-radius: 9px; margin-bottom: 12px;
  display: grid; place-items: center; flex: 0 0 auto;
  background: var(--brand-soft); color: var(--brand); border: 1px solid #d9ece5;
  transition: transform .22s ease;
}
.ico-tile svg { width: 16px; height: 16px; }
.card:hover .ico-tile { transform: scale(1.06); }

.sec-h2 { display: flex; align-items: center; gap: 10px; }
.sec-ico {
  width: 28px; height: 28px; border-radius: 8px; flex: 0 0 auto;
  display: grid; place-items: center;
  background: linear-gradient(140deg, var(--brand-2), var(--brand));
  color: #fff; box-shadow: 0 3px 9px rgba(15, 107, 87, .22);
}
.sec-ico svg { width: 15px; height: 15px; }

/* ---------------------------------------------------------------- 业绩表 */
.perf-table {
  width: 100%; border-collapse: collapse; background: #fff;
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); min-width: 640px;
}
.perf-table thead tr { background: var(--brand-soft); }
.perf-table th {
  text-align: left; padding: 14px; font-size: 13px;
  color: var(--brand-3); font-weight: 600; white-space: nowrap;
}
.case-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { margin: 0 0 9px; font-size: 16.6px; line-height: 1.5; }
.case-body p { margin: 0 0 14px; color: var(--muted); font-size: 14.2px; flex: 1; }
.case-meta {
  display: flex; gap: 8px; flex-wrap: wrap; font-size: 12.4px; color: var(--brand);
}
.case-meta i {
  font-style: normal; background: var(--brand-soft); border-radius: 6px;
  padding: 3px 9px;
}

/* ---------------------------------------------------------------- 资质卡 */
.qual-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; background: #fff; text-align: center; transition: .2s;
  height: 100%;
}
.qual-card:hover { border-color: #cfe4dc; box-shadow: var(--shadow-sm); }
.qual-doc {
  aspect-ratio: 3 / 4; border-radius: 9px; margin-bottom: 14px;
  background: #fff; border: 1px solid var(--line); overflow: hidden;
  display: block; position: relative; transition: .2s;
}
.qual-doc::before {
  content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(15, 107, 87, .06);
  border-radius: 9px; pointer-events: none; z-index: 2;
}
.qual-doc img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .4s ease;
}
.qual-card:hover .qual-doc img { transform: scale(1.03); }
.qual-card h4 { margin: 0; font-size: 14.6px; font-weight: 600; line-height: 1.6; }

/* ---------------------------------------------------------------- 数据条 */
.stats-band {
  background: linear-gradient(120deg, var(--brand-3), var(--brand));
  color: #fff; padding: 58px 0;
}
.stats-band .grid { gap: 30px; }
.stats-band b { display: block; font-size: 34px; line-height: 1.1; font-weight: 700; }
.stats-band span { font-size: 13.5px; color: rgba(255, 255, 255, .72); }

/* ---------------------------------------------------------------- 流程 */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin-top: 12px; }
.flow-step { position: relative; padding: 0 16px 0 0; }
.flow-step:last-child { padding-right: 0; }
.flow-step .dot {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: #fff; border: 2px solid var(--brand-2); color: var(--brand);
  font-weight: 700; font-size: 14px; margin-bottom: 14px; position: relative; z-index: 2;
}
.flow-step::before {
  content: ""; position: absolute; top: 20px; left: 40px; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--brand-2), #d8e8e2);
}
.flow-step:last-child::before { display: none; }
.flow-step h4 { margin: 0 0 6px; font-size: 15.5px; }
.flow-step p { margin: 0; font-size: 13.8px; color: var(--muted); line-height: 1.75; }

/* ---------------------------------------------------------------- 新闻 */
.news-item {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 22px;
  padding: 24px 0; border-bottom: 1px solid var(--line); align-items: start;
  transition: .2s;
}
.news-item:hover { background: #fbfdfc; }
.news-date {
  border-radius: 10px; background: var(--brand-soft); text-align: center;
  padding: 10px 6px; color: var(--brand-3);
}
.news-date b { display: block; font-size: 21px; line-height: 1.15; }
.news-date span { font-size: 11.5px; letter-spacing: .6px; }
.news-item h3 { margin: 0 0 7px; font-size: 17px; line-height: 1.55; }
.news-item p { margin: 0; color: var(--muted); font-size: 14.4px; }
.news-tag {
  font-size: 12.4px; color: var(--brand); background: var(--brand-soft);
  border-radius: 6px; padding: 4px 10px; white-space: nowrap; align-self: center;
}

/* ---------------------------------------------------------------- CTA */
.cta-band {
  background:
    radial-gradient(700px 300px at 84% 0%, rgba(26, 158, 125, .35), transparent 65%),
    linear-gradient(120deg, #0a3b31, #0d5346);
  color: #fff; padding: 62px 0;
}
.cta-band .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 30px; flex-wrap: wrap;
}
.cta-band h2 { margin: 0 0 8px; font-size: clamp(22px, 2.8vw, 30px); }
.cta-band p { margin: 0; color: rgba(255, 255, 255, .78); font-size: 15px; }

/* ---------------------------------------------------------------- 页面头 */
.page-head {
  background:
    radial-gradient(800px 340px at 82% -20%, rgba(26, 158, 125, .5), transparent 62%),
    linear-gradient(140deg, #0a3b31, #0f6b57);
  color: #fff; padding: 66px 0 60px; position: relative; overflow: hidden;
}
.page-head::after {
  content: ""; position: absolute; inset: 0; opacity: .14;
  background-image:
    linear-gradient(rgba(255, 255, 255, .6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .6) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(circle at 76% 20%, #000, transparent 70%);
          mask-image: radial-gradient(circle at 76% 20%, #000, transparent 70%);
}
.page-head .wrap { position: relative; z-index: 2; }
.page-head h1 { margin: 0 0 12px; font-size: clamp(26px, 3.6vw, 40px); letter-spacing: -.3px; }
.page-head p { margin: 0; color: rgba(255, 255, 255, .8); max-width: 680px; font-size: 16px; }
.crumb { font-size: 13px; color: rgba(255, 255, 255, .62); margin-bottom: 16px; }
.crumb a:hover { color: #fff; }

/* ---------------------------------------------------------------- 富文本 */
.prose { max-width: 860px; }
.prose h2 { font-size: 24px; margin: 40px 0 14px; }
.prose h3 { font-size: 19px; margin: 30px 0 10px; }
.prose p { margin: 0 0 16px; color: var(--ink-2); }
.prose ul { margin: 0 0 18px; }
.prose ul li {
  position: relative; padding-left: 20px; margin-bottom: 9px; color: var(--ink-2);
}
.prose ul li::before {
  content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 7px;
  border-radius: 2px; background: var(--brand-2); transform: rotate(45deg);
}
.note {
  background: var(--brand-soft); border-left: 3px solid var(--brand-2);
  border-radius: 0 10px 10px 0; padding: 16px 20px; color: var(--ink-2);
  font-size: 14.6px; margin: 0 0 22px;
}

/* ---------------------------------------------------------------- 联系方式 */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px; align-items: start; }
.info-row {
  display: flex; gap: 15px; padding: 19px 0; border-bottom: 1px solid var(--line);
}
.info-row:last-child { border-bottom: 0; }
.info-row .ico {
  width: 42px; height: 42px; flex: 0 0 auto; border-radius: 11px;
  background: var(--brand-soft); color: var(--brand); display: grid; place-items: center;
}
.info-row .ico svg { width: 20px; height: 20px; }
.info-row dt { font-size: 13px; color: var(--muted); margin-bottom: 2px; }
.info-row dd { margin: 0; font-size: 16px; font-weight: 600; word-break: break-all; }

.map-box {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--bg); aspect-ratio: 4 / 3; display: grid; place-items: center;
  text-align: center; padding: 24px;
}
.map-box p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }

/* ---------------------------------------------------------------- 页脚 */
.site-footer { background: #08151f; color: rgba(255, 255, 255, .62); padding: 62px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 36px;
  padding-bottom: 44px;
}
.site-footer h4 {
  color: #fff; font-size: 15px; margin: 0 0 16px; letter-spacing: .4px;
}
.site-footer .logo-txt strong { color: #fff; }
.site-footer .logo-txt span { color: rgba(255, 255, 255, .45); }
.footer-about p { margin: 16px 0 0; font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer-links li { margin-bottom: 9px; }
.footer-links a { font-size: 14.2px; transition: .18s; }
.footer-links a:hover { color: #fff; padding-left: 3px; }
.footer-contact li { margin-bottom: 11px; font-size: 14.2px; line-height: 1.7; }
.footer-contact b { color: rgba(255, 255, 255, .85); font-weight: 600; }
.footer-contact a { margin-left: 8px; color: rgba(255, 255, 255, .82); }
.footer-contact a:hover { color: #fff; }

/* 顶栏多联系人：中窄屏只留主联系人 */
@media (max-width: 1080px) {
  .topbar .tb-extra { display: none; }
}
.copyright {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0;
  font-size: 13px; display: flex; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; color: rgba(255, 255, 255, .45);
}
.copyright a:hover { color: #fff; }
/* ICP 备案号：比正文亮一点，悬停加下划线，容易被看到也点得准 */
.copyright .icp { color: rgba(255, 255, 255, .62); transition: .18s; }
.copyright .icp:hover { color: #fff; text-decoration: underline; }

/* 返回顶部 */
.to-top {
  position: fixed; right: 22px; bottom: 26px; width: 44px; height: 44px;
  border-radius: 50%; background: var(--brand); color: #fff; border: 0;
  display: grid; place-items: center; cursor: pointer; opacity: 0;
  pointer-events: none; transition: .25s; box-shadow: 0 8px 22px rgba(15, 107, 87, .35);
  z-index: 40;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--brand-3); }

/* ---------------------------------------------------------------- 待填标记 */
.tbd {
  background: #fff7e6; color: #a5731a; border-bottom: 1px dashed #d8a53a;
  padding: 0 4px; border-radius: 3px; font-style: normal;
}

/* ---------------------------------------------------------------- 响应式 */
@media (max-width: 1024px) {
  .hero-grid { gap: 26px; }
  .hero-art svg { max-width: 380px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .flow-step::before { display: none; }
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-copy .lead { max-width: 640px; }
  .hero-copy h1 { font-size: clamp(26px, 7vw, 38px); }
  .hero-art svg { max-width: 340px; }
  .hero-stats { margin-top: 44px; }
}

@media (max-width: 560px) {
  .hero-art { display: none; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed; inset: var(--header-h) 0 auto 0; background: #fff;
    flex-direction: column; align-items: stretch; padding: 14px 18px 22px;
    border-bottom: 1px solid var(--line); gap: 2px;
    transform: translateY(-130%); transition: .28s; box-shadow: var(--shadow);
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 13px 12px; font-size: 16px; }
  .nav .nav-cta { margin: 8px 0 0; text-align: center; }
  .nav-toggle { display: flex; }
  .section { padding: 60px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero .wrap { padding-top: 60px; padding-bottom: 66px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 74px 1fr; }
  .news-tag { grid-column: 2; justify-self: start; margin-top: 6px; }
}

@media (max-width: 560px) {
  .topbar .tb-right { display: none; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .cta-band .wrap { flex-direction: column; align-items: flex-start; }
}

/* 打印（报价/资料打印友好） */
@media print {
  .topbar, .site-header, .to-top, .cta-band, .site-footer { display: none; }
  body { color: #000; }
  .hero, .page-head { background: #fff !important; color: #000 !important; }
}