/* ==========================================================================
   海南和程新能源产业链有限公司 · 全站样式
   双主业：新能源投资 / 环保材料
   ========================================================================== */

:root {
  --teal-950: #04201d;
  --teal-900: #062523;
  --teal-800: #0a3b34;
  --teal-700: #0d5b4f;
  --teal-600: #0e8a7d;
  --teal-500: #12a794;
  --teal-400: #2ec7ad;
  --teal-300: #7fe0cd;
  --teal-200: #b6ece1;
  --teal-100: #e2f7f2;
  --teal-50:  #f2fbf8;

  --green-700: #15803d;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-400: #4ade80;
  --green-300: #86efac;
  --green-100: #dcfce7;
  --green-50:  #f0fdf4;

  --ink:    #08221f;
  --ink-2:  #1f3a37;
  --ink-3:  #3d5753;
  --muted:  #5e7874;
  --muted-2:#8aa3a0;
  --line:   #e3ecea;
  --line-2: #d4e0dd;

  --bg:     #ffffff;
  --bg-soft:#f6fbfa;
  --bg-warm:#f9fbf6;

  --radius:    18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --radius-xl: 36px;

  --shadow-xs: 0 1px 2px rgba(9, 61, 54, 0.05);
  --shadow-sm: 0 2px 10px rgba(9, 61, 54, 0.06), 0 1px 2px rgba(9, 61, 54, 0.04);
  --shadow:    0 14px 38px rgba(9, 61, 54, 0.09), 0 2px 6px rgba(9, 61, 54, 0.04);
  --shadow-lg: 0 28px 64px rgba(9, 61, 54, 0.14), 0 4px 10px rgba(9, 61, 54, 0.05);
  --shadow-xl: 0 40px 90px rgba(6, 37, 35, 0.20), 0 6px 18px rgba(6, 37, 35, 0.08);

  --max: 1240px;
  --max-narrow: 920px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
*::selection { background: var(--teal-200); color: var(--teal-900); }
section[id], div[id] { scroll-margin-top: 100px; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  font-feature-settings: "kern" 1, "palt" 1;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }

/* ---------- 排版基础 ---------- */
h1, h2, h3, h4, h5 {
  margin: 0;
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: clamp(34px, 5.4vw, 60px); line-height: 1.1; letter-spacing: -0.025em; }
h2 { font-size: clamp(26px, 3.4vw, 42px); line-height: 1.18; letter-spacing: -0.02em; }
h3 { font-size: clamp(19px, 1.6vw, 22px); line-height: 1.32; }
h4 { font-size: 17px; line-height: 1.4; }
p  { margin: 0; text-wrap: pretty; }
hr { border: none; border-top: 1px solid var(--line); margin: 0; }

.container { width: min(100% - 48px, var(--max)); margin-inline: auto; }
.container--narrow { width: min(100% - 48px, var(--max-narrow)); margin-inline: auto; }

/* ---------- 通用排版元素 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--teal-600);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--teal-500), var(--green-500));
}
.eyebrow--light { color: var(--teal-300); }
.eyebrow--light::before { background: linear-gradient(90deg, var(--teal-300), var(--green-300)); }
.section--dark .eyebrow { color: var(--teal-300); }
.section--dark .eyebrow::before { background: linear-gradient(90deg, var(--teal-300), var(--green-300)); }

.section { padding: 112px 0; }
.section--tight { padding: 88px 0; }
.section--soft  { background: var(--bg-soft); }
.section--warm  { background: var(--bg-warm); }
.section--dark  {
  background:
    radial-gradient(1100px 560px at 84% -10%, rgba(46, 199, 173, 0.22), transparent 60%),
    radial-gradient(700px 420px at 4% 110%, rgba(34, 197, 94, 0.18), transparent 62%),
    linear-gradient(180deg, var(--teal-900), var(--teal-950));
  color: #e8f5f2;
}

.section-head { max-width: 780px; margin-bottom: 56px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .eyebrow::before { display: none; }

.section-title {
  margin-top: 16px;
  font-size: clamp(28px, 3.4vw, 44px);
  color: var(--ink);
}
.section--dark .section-title { color: #fff; }

.section-desc {
  margin-top: 18px;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.75;
  max-width: 64ch;
}
.section-head--center .section-desc { margin-inline: auto; }
.section--dark .section-desc { color: #a9cdc7; }

.grad-text {
  background: linear-gradient(100deg, var(--teal-500) 0%, var(--green-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section--dark .grad-text {
  background: linear-gradient(100deg, var(--teal-300) 0%, var(--green-300) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    background 0.28s var(--ease), color 0.28s var(--ease), border-color 0.28s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }

.btn-primary {
  background: linear-gradient(120deg, var(--teal-600), var(--green-600));
  color: #fff;
  box-shadow: 0 12px 26px rgba(14, 138, 125, 0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(14, 138, 125, 0.38); }
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: #fff;
  color: var(--teal-700);
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { border-color: var(--teal-300); transform: translateY(-2px); }

.btn-light {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.34);
  backdrop-filter: blur(8px);
}
.btn-light:hover { background: rgba(255, 255, 255, 0.24); transform: translateY(-2px); }

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  color: var(--teal-600);
}
.btn-link svg { width: 16px; height: 16px; transition: transform 0.25s var(--ease); }
.btn-link:hover svg { transform: translateX(4px); }

/* ---------- 头部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease),
    backdrop-filter 0.3s var(--ease), border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 var(--line), 0 14px 32px rgba(9, 61, 54, 0.06);
  border-bottom-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 80px;
}

.logo { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 19px; color: var(--ink); }
.logo-mark {
  width: 42px; height: 42px;
  border-radius: 13px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--teal-600), var(--green-500));
  box-shadow: 0 10px 22px rgba(14, 138, 125, 0.32);
  flex: none;
  transition: transform 0.3s var(--ease);
}
.logo:hover .logo-mark { transform: rotate(-6deg); }
.logo-mark svg { width: 22px; height: 22px; color: #fff; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text b { letter-spacing: 0.04em; font-weight: 800; }
.logo-text span { font-size: 10.5px; font-weight: 600; letter-spacing: 0.22em; color: var(--teal-600); margin-top: 2px; }

.nav-links { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.nav-links a {
  position: relative;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--teal-700); background: var(--teal-50); }
.nav-links a.active { color: var(--teal-700); background: var(--teal-100); font-weight: 600; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  place-items: center;
  position: relative;
}
.nav-toggle span {
  display: block; width: 18px; height: 2px; background: var(--ink);
  position: relative; border-radius: 2px;
  transition: background 0.2s;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px;
  background: var(--ink); border-radius: 2px; transition: 0.28s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-open span::after  { top: 0; transform: rotate(-45deg); }

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  padding: 192px 0 116px;
  overflow: hidden;
  background:
    radial-gradient(1200px 680px at 86% -10%, rgba(46, 199, 173, 0.36), transparent 62%),
    radial-gradient(820px 520px at -4% 6%, rgba(34, 197, 94, 0.20), transparent 60%),
    linear-gradient(180deg, #f3fcf9 0%, #ffffff 78%);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(14, 138, 125, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14, 138, 125, 0.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 78% 64% at 50% 30%, #000 28%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 64% at 50% 30%, #000 28%, transparent 78%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 60px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.6));
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 880px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 18px 7px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  font-size: 13.5px; font-weight: 600; color: var(--teal-700);
}
.hero-badge i {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-500), var(--green-500));
  display: grid; place-items: center; flex: none;
}
.hero-badge i svg { width: 12px; height: 12px; color: #fff; }

.hero-title {
  margin-top: 28px;
  font-size: clamp(36px, 5.6vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 18ch;
  text-wrap: balance;
}
.hero-title em {
  font-style: normal;
  display: inline-block;
}
.hero-lead {
  margin-top: 26px;
  max-width: 62ch;
  font-size: clamp(16px, 1.4vw, 18.5px);
  line-height: 1.75;
  color: var(--muted);
}
.hero-actions { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 14px; }

.hero-stats {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
}
.hero-stats::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 25% 100%;
  pointer-events: none;
}
.hero-stats .stat { padding: 30px 26px; position: relative; }
.hero-stats .stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 18%; bottom: 18%; width: 1px;
  background: var(--line);
}
.stat-num {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
  background: linear-gradient(120deg, var(--teal-600), var(--green-600));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  display: flex; align-items: baseline; gap: 2px;
}
.stat-num sup {
  font-size: 0.42em;
  font-weight: 700;
  letter-spacing: 0;
  margin-left: 4px;
  background: none; -webkit-text-fill-color: var(--teal-600);
  color: var(--teal-600);
}
.stat-label {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- 双主业 支柱卡 ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.pillar {
  position: relative;
  padding: 44px 40px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.pillar::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
  background: linear-gradient(90deg, var(--teal-500), var(--green-500));
}
.pillar::after {
  content: "";
  position: absolute; right: -80px; top: -80px;
  width: 280px; height: 280px; border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 167, 148, 0.10), transparent 70%);
  pointer-events: none;
}
.pillar:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pillar--materials::before { background: linear-gradient(90deg, var(--green-600), #8fd14f); }
.pillar--materials::after  { background: radial-gradient(circle, rgba(34, 197, 94, 0.10), transparent 70%); }

.pillar-icon {
  width: 60px; height: 60px; border-radius: 16px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--teal-600), var(--teal-400));
  box-shadow: 0 14px 30px rgba(14, 138, 125, 0.28);
  margin-bottom: 24px;
  position: relative; z-index: 1;
}
.pillar--materials .pillar-icon {
  background: linear-gradient(135deg, var(--green-600), #7ed957);
  box-shadow: 0 14px 30px rgba(22, 163, 74, 0.28);
}
.pillar-icon svg { width: 28px; height: 28px; color: #fff; }

.pillar-tag {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--teal-500);
  text-transform: uppercase;
}
.pillar--materials .pillar-tag { color: var(--green-600); }
.pillar-title { margin-top: 8px; font-size: 26px; letter-spacing: -0.02em; }
.pillar-text {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.72;
  max-width: 38ch;
}

.pillar-list { margin-top: 24px; display: grid; gap: 13px; }
.pillar-list li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 15px; color: var(--ink-2); line-height: 1.55;
}
.pillar-list svg {
  width: 19px; height: 19px; flex: none; margin-top: 4px;
  color: var(--teal-500);
}
.pillar--materials .pillar-list svg { color: var(--green-600); }

.pillar-foot {
  margin-top: 30px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px dashed var(--line);
}
.link-arrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-weight: 600; font-size: 15px; color: var(--teal-600);
  transition: gap 0.25s var(--ease);
}
.link-arrow:hover { gap: 11px; }
.link-arrow svg { width: 16px; height: 16px; }
.pillar--materials .link-arrow { color: var(--green-600); }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; gap: 26px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.cards--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 36px 30px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--teal-300);
}

.card-visual {
  height: 144px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
}
.card-visual svg { width: 64px; height: 64px; color: #fff; position: relative; z-index: 1; }
.card-visual--sun    { background: linear-gradient(135deg, #0d5b4f 0%, #12a794 60%, #2ec7ad 100%); }
.card-visual--truck  { background: linear-gradient(135deg, #0a3b34 0%, #0e8a7d 60%, #4ade80 100%); }
.card-visual--ship   { background: linear-gradient(135deg, #0c4a6e 0%, #1d8fbf 55%, #2ec7ad 100%); }
.card-visual--green  { background: linear-gradient(135deg, #15803d 0%, #22c55e 60%, #bef264 100%); }
.card-visual--leaf   { background: linear-gradient(135deg, #14532d 0%, #16a34a 60%, #86efac 100%); }
.card-visual--recycle{ background: linear-gradient(135deg, #0f766e 0%, #14b8a6 60%, #86efac 100%); }

.card-visual::before {
  content: ""; position: absolute; inset: -36% -10% auto auto;
  width: 200px; height: 200px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}
.card-visual::after {
  content: ""; position: absolute; inset: auto auto -56px -36px;
  width: 168px; height: 168px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.card-title { font-size: 20.5px; letter-spacing: -0.01em; }
.card-text  { margin-top: 12px; color: var(--muted); font-size: 14.8px; line-height: 1.7; }
.card-tags  { margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--teal-700);
  background: var(--teal-50);
  border: 1px solid var(--teal-100);
}
.tag--green {
  color: var(--green-700);
  background: var(--green-50);
  border-color: var(--green-100);
}

/* ---------- 图文分栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1.04fr 1fr;
  gap: 64px;
  align-items: center;
}
.split--reverse .split-media { order: 2; }

.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(140deg, #0a3b34 0%, #0d5b4f 45%, #12a794 100%);
  min-height: 380px;
  display: grid; place-items: center;
  position: relative;
}
.split-media svg { width: 124px; height: 124px; color: rgba(255, 255, 255, 0.94); position: relative; z-index: 1; }
.split-media::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.12) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000, transparent 80%);
}
.split-media::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 60% at 80% 0%, rgba(255,255,255,0.18), transparent 70%);
  pointer-events: none;
}
.split-media--materials { background: linear-gradient(140deg, #14532d 0%, #16a34a 45%, #86efac 100%); }
.split-media--ocean    { background: linear-gradient(140deg, #0c4a6e 0%, #1d8fbf 45%, #2ec7ad 100%); }

.split-body .section-title { font-size: clamp(26px, 3vw, 38px); }
.split-body p + p { margin-top: 14px; }
.split-body .split-lead {
  margin-top: 18px; color: var(--muted); font-size: 16.5px; line-height: 1.78;
  max-width: 56ch;
}

.checks { margin-top: 28px; display: grid; gap: 16px; }
.checks li { display: flex; gap: 14px; align-items: flex-start; }
.checks i {
  width: 26px; height: 26px; border-radius: 50%; flex: none;
  background: var(--teal-100); color: var(--teal-600);
  display: grid; place-items: center; margin-top: 1px;
}
.checks i svg { width: 14px; height: 14px; }
.checks b { font-weight: 700; color: var(--ink); }
.checks span { display: block; color: var(--muted); font-size: 14.5px; line-height: 1.65; margin-top: 2px; }

/* ---------- 数据表 ---------- */
.spec-table-wrap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.8px;
}
.spec-table th, .spec-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th { font-weight: 600; color: var(--ink-2); }
.spec-table thead th {
  background: linear-gradient(180deg, var(--teal-50), #fff);
  color: var(--teal-800);
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--line-2);
}
.spec-table tbody tr:last-child td { border-bottom: none; }
.spec-table tbody tr { transition: background 0.2s; }
.spec-table tbody tr:hover { background: var(--teal-50); }

/* ---------- 流程步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
  position: relative;
}
.steps::before {
  content: ""; position: absolute;
  top: 36px; left: 12%; right: 12%;
  height: 2px;
  background-image: linear-gradient(90deg, var(--teal-200) 50%, transparent 50%);
  background-size: 14px 2px;
  z-index: 0;
}
.step {
  position: relative;
  padding: 30px 24px 28px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  z-index: 1;
}
.step-no {
  width: 46px; height: 46px; border-radius: 14px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 17px;
  color: #fff;
  background: linear-gradient(135deg, var(--teal-600), var(--green-500));
  box-shadow: 0 10px 22px rgba(14, 138, 125, 0.28);
  margin-bottom: 20px;
}
.step h4 { font-size: 17.5px; }
.step p  { margin-top: 10px; color: var(--muted); font-size: 14.5px; line-height: 1.7; }

/* ---------- 优势列表（深色区） ---------- */
.advantages { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantage {
  padding: 32px 28px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(6px);
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.advantage:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(127, 224, 205, 0.3);
}
.advantage i {
  width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(46, 199, 173, 0.3), rgba(34, 197, 94, 0.3));
  border: 1px solid rgba(127, 224, 205, 0.35);
}
.advantage i svg { width: 22px; height: 22px; color: var(--teal-300); }
.advantage h4 { font-size: 18px; color: #fff; }
.advantage p  { margin-top: 10px; font-size: 14.5px; line-height: 1.7; color: #a9cdc7; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-xl);
  padding: 72px 64px;
  overflow: hidden;
  background:
    radial-gradient(700px 320px at 90% 10%, rgba(46, 199, 173, 0.45), transparent 60%),
    radial-gradient(560px 280px at 0% 100%, rgba(34, 197, 94, 0.32), transparent 62%),
    linear-gradient(120deg, var(--teal-800) 0%, var(--teal-700) 50%, var(--green-700) 100%);
  color: #fff;
  box-shadow: var(--shadow-xl);
  isolation: isolate;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.10) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 100% at 12% 50%, #000, transparent 74%);
  -webkit-mask-image: radial-gradient(ellipse 80% 100% at 12% 50%, #000, transparent 74%);
}
.cta-inner {
  position: relative;
  display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
}
.cta-inner h2 { font-size: clamp(26px, 3vw, 38px); color: #fff; max-width: 22ch; }
.cta-inner p  { margin-top: 14px; color: rgba(255, 255, 255, 0.86); max-width: 56ch; line-height: 1.7; }
.cta-actions { margin-left: auto; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 内页 Hero ---------- */
.page-hero {
  position: relative;
  padding: 172px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(1000px 500px at 84% -18%, rgba(46, 199, 173, 0.32), transparent 62%),
    linear-gradient(180deg, #eefaf6 0%, #ffffff 84%);
}
.page-hero--materials {
  background:
    radial-gradient(1000px 500px at 84% -18%, rgba(34, 197, 94, 0.28), transparent 62%),
    linear-gradient(180deg, #f1fbf3 0%, #ffffff 84%);
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(14, 138, 125, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14, 138, 125, 0.05) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 78% 70% at 50% 24%, #000 22%, transparent 76%);
  -webkit-mask-image: radial-gradient(ellipse 78% 70% at 50% 24%, #000 22%, transparent 76%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero h1 {
  margin-top: 18px;
  font-size: clamp(32px, 4.4vw, 50px);
  letter-spacing: -0.025em;
  max-width: 18ch;
}
.page-hero .lead {
  margin-top: 20px;
  max-width: 64ch;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.78;
}

.breadcrumb {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--muted);
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.breadcrumb a:hover { color: var(--teal-600); }
.breadcrumb svg { width: 13px; height: 13px; opacity: 0.55; }
.breadcrumb .current { color: var(--teal-700); font-weight: 600; }

/* ---------- 标签页（新能源/材料页内） ---------- */
.tabs {
  display: inline-flex;
  padding: 5px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 4px;
}
.tabs > * {
  padding: 9px 20px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--ink-2);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  transition: 0.22s var(--ease);
}
.tabs > *:hover { color: var(--teal-700); }
.tabs > *.active {
  background: #fff;
  color: var(--teal-700);
  box-shadow: 0 6px 16px rgba(14, 138, 125, 0.16);
}

/* ---------- 新闻 ---------- */
.news-filter { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.news-filter button {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.22s var(--ease);
}
.news-filter button:hover { border-color: var(--teal-300); color: var(--teal-600); }
.news-filter button.active {
  background: linear-gradient(120deg, var(--teal-600), var(--green-600));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px rgba(14, 138, 125, 0.28);
}

.news-list { display: grid; gap: 20px; }
.news-item {
  display: grid;
  grid-template-columns: 104px 1fr auto;
  gap: 30px;
  align-items: center;
  padding: 30px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--teal-300); }
.news-date {
  text-align: center;
  border-right: 1px solid var(--line);
  padding-right: 22px;
}
.news-date b { display: block; font-size: 32px; font-weight: 800; color: var(--teal-600); line-height: 1; letter-spacing: -0.02em; }
.news-date span { display: block; font-size: 13px; color: var(--muted); margin-top: 6px; letter-spacing: 0.04em; }
.news-body h3 { font-size: 19px; transition: color 0.22s; }
.news-item:hover .news-body h3 { color: var(--teal-600); }
.news-body p  { margin-top: 10px; color: var(--muted); font-size: 14.6px; line-height: 1.7; }
.news-meta { display: flex; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.news-tag {
  font-size: 12px; font-weight: 700; padding: 4px 11px; border-radius: 999px;
  background: var(--teal-50); color: var(--teal-700); border: 1px solid var(--teal-100);
  letter-spacing: 0.04em;
}
.news-tag--green { background: var(--green-50); color: var(--green-700); border-color: var(--green-100); }
.news-more { color: var(--teal-600); transition: transform 0.25s var(--ease); }
.news-item:hover .news-more { transform: translateX(4px); }
.news-more svg { width: 22px; height: 22px; }
.news-item.is-hidden { display: none; }

/* ---------- 联系方式 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}
.contact-card {
  padding: 38px 36px 36px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.contact-list { display: grid; gap: 22px; margin-top: 28px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; }
.contact-list i {
  width: 44px; height: 44px; border-radius: 13px; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--teal-50), var(--teal-100));
  color: var(--teal-600);
  border: 1px solid var(--teal-100);
}
.contact-list i svg { width: 20px; height: 20px; }
.contact-list b { display: block; font-size: 13px; color: var(--muted); font-weight: 500; margin-bottom: 2px; }
.contact-list span { font-size: 16px; font-weight: 600; color: var(--ink); line-height: 1.5; }

.form { display: block; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: block; margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-2);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 16px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  transition: 0.22s var(--ease);
}
.field textarea { resize: vertical; min-height: 124px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--teal-400);
  box-shadow: 0 0 0 4px rgba(18, 167, 148, 0.16);
}
.form-note { margin-top: 14px; font-size: 13px; color: var(--muted); }
.form-msg {
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--teal-50);
  border: 1px solid var(--teal-100);
  color: var(--teal-700);
  font-size: 14px;
  font-weight: 600;
  display: none;
}
.form-msg.show { display: block; }

/* ---------- 时间线（关于我们） ---------- */
.timeline { position: relative; margin-top: 32px; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: linear-gradient(180deg, var(--teal-300), var(--green-300) 80%, transparent);
}
.timeline li { position: relative; padding-bottom: 22px; }
.timeline li::before {
  content: ""; position: absolute; left: -25px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff;
  border: 3px solid var(--teal-500);
  box-shadow: 0 0 0 4px rgba(18, 167, 148, 0.12);
}
.timeline li b {
  display: inline-block;
  font-weight: 700;
  color: var(--teal-700);
  font-size: 14px;
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}
.timeline li p { color: var(--muted); font-size: 14.5px; line-height: 1.7; }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background:
    radial-gradient(900px 460px at 14% 0%, rgba(46, 199, 173, 0.10), transparent 60%),
    radial-gradient(700px 380px at 90% 100%, rgba(34, 197, 94, 0.08), transparent 60%),
    var(--teal-900);
  color: #b9d8d3;
  padding: 80px 0 0;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 56px;
}
.footer-brand .logo { color: #fff; }
.footer-brand .logo-text span { color: var(--teal-300); }
.footer-brand p { margin-top: 22px; font-size: 14.5px; line-height: 1.75; max-width: 36ch; color: #9bc1bc; }
.footer-col h4 { font-size: 15px; color: #fff; margin-bottom: 20px; letter-spacing: 0.04em; }
.footer-col li + li { margin-top: 12px; }
.footer-col a { font-size: 14.3px; transition: color 0.2s; }
.footer-col a:hover { color: var(--teal-300); }
.footer-contact li { font-size: 14.3px; display: flex; gap: 10px; align-items: flex-start; line-height: 1.55; }
.footer-contact svg { width: 16px; height: 16px; flex: none; margin-top: 4px; color: var(--teal-300); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13.4px;
  color: #86a8a3;
}
.footer-bottom a:hover { color: var(--teal-300); }

/* ---------- 滚动入场 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .steps::before { display: none; }
}

@media (max-width: 1080px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .cards--4 { grid-template-columns: repeat(2, 1fr); }
  .advantages { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .nav-toggle { display: grid; }
  .nav-links {
    position: absolute;
    top: 80px; left: 12px; right: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-left: 0;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 13px 16px; border-radius: 12px; }
  .nav .btn { display: none; }

  .split { grid-template-columns: 1fr; gap: 36px; }
  .split--reverse .split-media { order: 0; }
  .pillars { grid-template-columns: 1fr; }
  .cards--3 { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
  .section--tight { padding: 64px 0; }
  .hero { padding: 152px 0 84px; }
  .page-hero { padding: 140px 0 64px; }
  .cta-band { padding: 52px 36px; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 32px, var(--max)); }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .cards--4 { grid-template-columns: 1fr; }
  .advantages, .steps { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 16px; padding: 24px; }
  .news-date { border-right: none; border-bottom: 1px solid var(--line); padding: 0 0 14px; text-align: left; display: flex; align-items: baseline; gap: 12px; }
  .news-date b { font-size: 26px; }
  .news-more { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .pillar, .card, .contact-card { padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats { margin-top: 56px; }
  .hero-stats .stat + .stat::before { display: none; }
  .hero-stats::before { display: none; }
  .section { padding: 68px 0; }
  .section-head { margin-bottom: 40px; }
  .cta-actions { margin-left: 0; width: 100%; }
  .cta-actions .btn { flex: 1; }
}