/* ============================================================
   精微能 Jamin Energy System — 电压荧光 · 仪表视觉体系
   纯黑底 / 荧光绿单主色 / 示波器与工程仪器语言
   ============================================================ */

:root {
  --bg-0: #050704;
  --bg-1: #080b06;
  --panel: rgba(20, 27, 14, 0.42);
  --panel-solid: #0b100a;
  --line: rgba(190, 230, 140, 0.13);
  --line-strong: rgba(185, 255, 60, 0.42);
  --ink: #eef4e6;
  --ink-dim: rgba(238, 244, 230, 0.62);
  --ink-faint: rgba(238, 244, 230, 0.36);
  --volt: #b9ff3c;
  --volt-dim: rgba(185, 255, 60, 0.6);
  --volt-glow: rgba(185, 255, 60, 0.28);
  --red: #ff3b30;
  --font-display: "Archivo", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --radius: 2px;
  --header-h: 78px;
  --ease-out: cubic-bezier(0.22, 0.61, 0.21, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg-0);
  line-height: 1.75;
  font-size: 16px;
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 噪点肌理 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection {
  color: #0c1104;
  background: var(--volt);
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-0);
}

::-webkit-scrollbar-thumb {
  border: 2px solid var(--bg-0);
  border-radius: 8px;
  background: rgba(185, 255, 60, 0.3);
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

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

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.section-inner {
  width: min(1180px, calc(100% - 56px));
  margin: 0 auto;
}

/* 荧光高亮词（原 grad-text，仪表风改为纯色荧光） */
.grad-text {
  color: var(--volt);
  text-shadow: 0 0 26px rgba(185, 255, 60, 0.4);
}

/* ------------------------------------------------------------
   顶部导航
   ------------------------------------------------------------ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(28px, calc((100vw - 1180px) / 2));
  color: var(--ink);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled,
.site-header.nav-open {
  background: rgba(5, 7, 4, 0.82);
  border-bottom-color: var(--line);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-width: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  object-fit: contain;
  filter: drop-shadow(0 0 14px rgba(185, 255, 60, 0.2));
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 16px;
  line-height: 1.25;
  letter-spacing: 0.04em;
}

.brand small {
  margin-top: 1px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 38px;
  font-size: 15px;
}

.site-nav a {
  position: relative;
  padding: 10px 0;
  color: var(--ink-dim);
  transition: color 0.25s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 4px;
  height: 1px;
  background: var(--volt);
  transition: right 0.3s var(--ease-out);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--ink);
}

.site-nav a.active {
  color: var(--volt);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  right: 0;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(185, 255, 60, 0.03);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.6px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6.6px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6.6px) rotate(-45deg);
}

/* ------------------------------------------------------------
   首屏 Hero — 仪表粒子球
   ------------------------------------------------------------ */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 64px) 0 120px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 58% 46% at 72% 46%, rgba(74, 110, 24, 0.3), transparent 68%),
    radial-gradient(ellipse 40% 34% at 12% 88%, rgba(50, 84, 30, 0.22), transparent 70%),
    var(--bg-0);
}

/* 蓝图网格 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(185, 255, 60, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 255, 60, 0.05) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 60% 45%, black 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 85% 75% at 60% 45%, black 25%, transparent 78%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 180px;
  z-index: 1;
  background: linear-gradient(to bottom, transparent, var(--bg-0));
  pointer-events: none;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
}

.hero-nebula {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-nebula .blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  animation: blob-drift 26s ease-in-out infinite alternate;
}

.hero-nebula .b1 {
  width: 44vw;
  height: 44vw;
  right: -8vw;
  top: -6vw;
  background: radial-gradient(circle, rgba(126, 188, 44, 0.22), transparent 66%);
}

.hero-nebula .b2 {
  width: 34vw;
  height: 34vw;
  left: -10vw;
  bottom: -12vw;
  background: radial-gradient(circle, rgba(64, 120, 52, 0.2), transparent 66%);
  animation-delay: -9s;
}

@keyframes blob-drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4vw, -3vw, 0) scale(1.12);
  }
}

/* 扫描线 */
.scanline {
  position: absolute;
  left: 0;
  right: 0;
  top: -12%;
  z-index: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(185, 255, 60, 0.55), transparent);
  box-shadow: 0 0 18px rgba(185, 255, 60, 0.35);
  opacity: 0;
  animation: scan 7s linear infinite;
  pointer-events: none;
}

@keyframes scan {
  0% {
    top: -12%;
    opacity: 0;
  }
  8%,
  60% {
    opacity: 0.75;
  }
  72%,
  100% {
    top: 112%;
    opacity: 0;
  }
}

/* HUD 仪表读数 */
.hud {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  pointer-events: none;
}

.hud-live {
  top: calc(var(--header-h) + 26px);
  right: max(28px, calc((100vw - 1180px) / 2));
}

.hud-coords {
  right: max(28px, calc((100vw - 1180px) / 2));
  bottom: 32px;
}

.hud .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 10px rgba(255, 59, 48, 0.9);
  animation: blink 1.7s ease-in-out infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.25;
  }
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
  color: var(--volt);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
}

.eyebrow::before,
.eyebrow::after {
  color: var(--volt-dim);
  font-weight: 400;
}

.eyebrow::before {
  content: "[";
}

.eyebrow::after {
  content: "]";
}

h1 {
  max-width: 15em;
  margin-bottom: 28px;
  font-size: clamp(42px, 6vw, 78px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.01em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(29px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.01em;
}

h3 {
  margin-bottom: 12px;
  font-size: 19px;
  line-height: 1.45;
}

.hero-lead {
  max-width: 620px;
  margin-bottom: 42px;
  color: var(--ink-dim);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
  will-change: transform;
}

.btn-primary {
  color: #0e1404;
  background: var(--volt);
  box-shadow: 0 8px 30px rgba(185, 255, 60, 0.22);
}

.btn-primary:hover {
  background: #c9ff5e;
  box-shadow: 0 12px 44px rgba(185, 255, 60, 0.4);
}

.btn-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: rgba(185, 255, 60, 0.03);
}

.btn-ghost:hover {
  color: var(--volt);
  background: rgba(185, 255, 60, 0.09);
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 30px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transform: translateX(-50%);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.scroll-hint i {
  position: relative;
  width: 1px;
  height: 54px;
  overflow: hidden;
  background: rgba(185, 255, 60, 0.16);
}

.scroll-hint i::after {
  content: "";
  position: absolute;
  left: 0;
  top: -30%;
  width: 100%;
  height: 30%;
  background: var(--volt);
  animation: scroll-drop 2.2s var(--ease-out) infinite;
}

@keyframes scroll-drop {
  0% {
    top: -30%;
  }
  70%,
  100% {
    top: 110%;
  }
}

/* ------------------------------------------------------------
   跑马灯 — 标尺带
   ------------------------------------------------------------ */

.marquee {
  position: relative;
  z-index: 2;
  overflow: hidden;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, rgba(185, 255, 60, 0.07) 0 1px, transparent 1px 76px),
    rgba(185, 255, 60, 0.015);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 32s linear infinite;
}

.marquee:hover .marquee-track {
  animation-play-state: paused;
}

.marquee-group {
  display: flex;
  align-items: center;
  gap: 46px;
  padding-right: 46px;
}

.marquee-group span {
  white-space: nowrap;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.22em;
}

.marquee-group i {
  color: var(--volt);
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 13px;
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ------------------------------------------------------------
   通用 Section
   ------------------------------------------------------------ */

.section {
  position: relative;
  padding: 128px 0;
}

.section-alt {
  background:
    radial-gradient(ellipse 50% 42% at 88% 8%, rgba(74, 110, 24, 0.16), transparent 70%),
    var(--bg-1);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  max-width: 780px;
  margin-bottom: 64px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.section-head.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-head.centered .eyebrow {
  justify-content: center;
}

.section-no {
  display: block;
  margin-bottom: 16px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3em;
}

.section-no b {
  color: var(--volt);
  font-weight: 500;
}

.section-no b::before,
.section-no b::after {
  color: var(--volt-dim);
  font-weight: 400;
}

.section-no b::before {
  content: "[";
}

.section-no b::after {
  content: "]";
}

.section-head > p:not(.eyebrow):not(.section-no) {
  color: var(--ink-dim);
  font-size: 17px;
}

/* ------------------------------------------------------------
   卡片：问题 / 方法 / 行业 — 直角 + 括弧角标
   ------------------------------------------------------------ */

.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.spot-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: transform 0.35s var(--ease-out), border-color 0.35s ease, box-shadow 0.35s ease;
}

/* 光标光斑 */
.spot-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(185, 255, 60, 0.09), transparent 65%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

/* 悬停时四角括弧 */
.spot-card::after {
  content: "";
  position: absolute;
  inset: 9px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  background:
    linear-gradient(var(--volt), var(--volt)) left top / 13px 1px,
    linear-gradient(var(--volt), var(--volt)) left top / 1px 13px,
    linear-gradient(var(--volt), var(--volt)) right top / 13px 1px,
    linear-gradient(var(--volt), var(--volt)) right top / 1px 13px,
    linear-gradient(var(--volt), var(--volt)) left bottom / 13px 1px,
    linear-gradient(var(--volt), var(--volt)) left bottom / 1px 13px,
    linear-gradient(var(--volt), var(--volt)) right bottom / 13px 1px,
    linear-gradient(var(--volt), var(--volt)) right bottom / 1px 13px;
  background-repeat: no-repeat;
}

.spot-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.spot-card:hover::before,
.spot-card:hover::after {
  opacity: 1;
}

.info-card {
  min-height: 300px;
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
}

.card-index {
  display: block;
  margin-bottom: auto;
  padding-bottom: 38px;
  font-family: var(--font-mono);
  font-size: 46px;
  font-weight: 500;
  line-height: 1;
  color: rgba(185, 255, 60, 0.14);
}

@supports ((-webkit-text-stroke: 1px black)) {
  .card-index {
    color: transparent;
    -webkit-text-stroke: 1px rgba(185, 255, 60, 0.45);
  }
}

.spot-card p {
  margin-bottom: 0;
  color: var(--ink-dim);
  font-size: 15px;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 72px;
  align-items: start;
}

.sticky-head {
  position: sticky;
  top: calc(var(--header-h) + 40px);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.method-card {
  min-height: 208px;
  padding: 28px;
}

.method-card .tag {
  display: inline-block;
  margin-bottom: 20px;
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--volt);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.industry-card {
  min-height: 320px;
  padding: 34px 30px;
}

.card-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(185, 255, 60, 0.05);
  color: var(--volt);
  box-shadow: 0 0 26px rgba(185, 255, 60, 0.08) inset;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ------------------------------------------------------------
   结果列表 / 原则列表
   ------------------------------------------------------------ */

.result-list,
.principle-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.result-list p,
.principle-list p {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
  padding: 21px 6px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-dim);
  transition: color 0.3s ease, padding-left 0.3s var(--ease-out), background 0.3s ease;
}

.result-list p::before,
.principle-list p::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--volt);
  box-shadow: 0 0 10px rgba(185, 255, 60, 0.9);
}

.result-list p:hover,
.principle-list p:hover {
  padding-left: 16px;
  color: var(--ink);
  background: rgba(185, 255, 60, 0.03);
}

/* ------------------------------------------------------------
   CTA / 页脚
   ------------------------------------------------------------ */

.cta {
  position: relative;
  overflow: hidden;
  padding: 140px 0;
  text-align: center;
  background:
    radial-gradient(ellipse 46% 60% at 50% 110%, rgba(126, 188, 44, 0.18), transparent 70%),
    var(--bg-0);
}

.cta::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: min(680px, 80vw);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.cta h2 {
  max-width: 780px;
  margin: 0 auto 40px;
  font-size: clamp(30px, 4vw, 52px);
}

.site-footer {
  padding: 44px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  background: var(--bg-1);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.site-footer strong {
  color: var(--ink);
  letter-spacing: 0.04em;
}

.site-footer p {
  margin: 6px 0 0;
}

/* ------------------------------------------------------------
   子页面 Hero
   ------------------------------------------------------------ */

.page-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 96px) 0 108px;
  background:
    radial-gradient(ellipse 52% 46% at 82% 12%, rgba(74, 110, 24, 0.24), transparent 70%),
    radial-gradient(ellipse 38% 34% at 8% 90%, rgba(50, 84, 30, 0.18), transparent 70%),
    var(--bg-0);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(185, 255, 60, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 255, 60, 0.04) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(ellipse 90% 85% at 60% 40%, black 20%, transparent 80%);
  mask-image: radial-gradient(ellipse 90% 85% at 60% 40%, black 20%, transparent 80%);
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 130px;
  z-index: 1;
  background: linear-gradient(to bottom, transparent, var(--bg-0));
  pointer-events: none;
}

.page-hero.compact {
  padding-bottom: 88px;
}

.page-hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
}

.page-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 880px;
}

.page-hero p:not(.eyebrow) {
  max-width: 720px;
  color: var(--ink-dim);
  font-size: 17px;
}

/* ------------------------------------------------------------
   关于页
   ------------------------------------------------------------ */

.narrative-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 22px;
  align-items: stretch;
}

.narrative-block {
  padding: 40px 36px;
}

.narrative-block > p:last-child {
  margin-bottom: 0;
  color: var(--ink-dim);
}

.highlight-block {
  display: flex;
  align-items: center;
  border-color: var(--line-strong);
  background:
    radial-gradient(ellipse 80% 90% at 90% 0%, rgba(185, 255, 60, 0.1), transparent 60%),
    linear-gradient(150deg, #0b110a, #101a0a);
  box-shadow: 0 0 60px rgba(185, 255, 60, 0.05) inset;
}

.highlight-block p {
  margin: 0;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.8;
}

.highlight-block p::before {
  content: "“";
  display: block;
  height: 44px;
  color: var(--volt);
  font-family: Georgia, serif;
  font-size: 64px;
  line-height: 0.8;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.capability-item {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 108px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: transform 0.35s var(--ease-out), border-color 0.3s ease, box-shadow 0.3s ease;
}

.capability-item .no {
  color: var(--volt);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
}

.capability-item .no::before {
  content: "/";
  color: var(--volt-dim);
}

.capability-item:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}

/* ------------------------------------------------------------
   联系页
   ------------------------------------------------------------ */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
  gap: 22px;
  align-items: start;
}

.contact-form {
  padding: 38px 34px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 18px;
}

label {
  display: grid;
  gap: 9px;
  margin-bottom: 20px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 15px;
  color: var(--ink);
  background: rgba(185, 255, 60, 0.025);
  font: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23b9ff3c' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

select option {
  color: var(--ink);
  background: var(--panel-solid);
}

input::placeholder,
textarea::placeholder {
  color: var(--ink-faint);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--line-strong);
  background: rgba(185, 255, 60, 0.05);
  box-shadow: 0 0 0 4px rgba(185, 255, 60, 0.09);
}

textarea {
  resize: vertical;
}

.form-message {
  min-height: 26px;
  margin: 16px 0 0;
  color: var(--volt);
  font-weight: 700;
}

.contact-panel {
  position: sticky;
  top: calc(var(--header-h) + 30px);
  padding: 38px 34px;
  border-color: var(--line-strong);
  background:
    radial-gradient(ellipse 90% 70% at 100% 0%, rgba(185, 255, 60, 0.08), transparent 62%),
    var(--panel);
}

.contact-lines {
  display: grid;
  margin-top: 30px;
}

.contact-lines p {
  margin: 0;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-dim);
}

.contact-lines p:last-child {
  border-bottom: 0;
}

.contact-lines span {
  display: block;
  margin-bottom: 5px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}

.contact-lines a {
  color: var(--volt);
  transition: color 0.2s ease;
}

.contact-lines a:hover {
  color: #d4ff5e;
}

/* ------------------------------------------------------------
   滚动显现动画
   ------------------------------------------------------------ */

.js .reveal {
  opacity: 0;
  transform: translateY(30px);
  filter: blur(8px);
  transition:
    opacity 0.9s var(--ease-out),
    transform 0.9s var(--ease-out),
    filter 0.9s var(--ease-out);
  transition-delay: var(--d, 0s);
}

.js .reveal.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */

@media (max-width: 1020px) {
  .split-layout,
  .contact-layout,
  .narrative-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .sticky-head,
  .contact-panel {
    position: static;
  }

  .problem-grid,
  .industry-grid,
  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 68px;
  }

  body {
    font-size: 15px;
  }

  .section-inner {
    width: calc(100% - 36px);
  }

  .site-header {
    padding: 0 18px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand strong {
    font-size: 15px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    left: 16px;
    right: 16px;
    top: calc(var(--header-h) + 10px);
    display: grid;
    gap: 2px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(5, 7, 4, 0.97);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.25s ease, transform 0.25s var(--ease-out);
  }

  .site-header.nav-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 13px 14px;
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a.active {
    background: rgba(185, 255, 60, 0.07);
    color: var(--volt);
  }

  .hero {
    min-height: auto;
    padding: calc(var(--header-h) + 88px) 0 130px;
  }

  h1 {
    font-size: clamp(34px, 9.4vw, 44px);
  }

  .hero-lead {
    font-size: 16px;
  }

  .scroll-hint,
  .hud-coords {
    display: none;
  }

  .hud-live {
    right: 18px;
  }

  .section {
    padding: 88px 0;
  }

  .section-head {
    margin-bottom: 44px;
  }

  .problem-grid,
  .method-grid,
  .industry-grid,
  .capability-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .info-card,
  .method-card,
  .industry-card {
    min-height: auto;
  }

  .card-index {
    padding-bottom: 26px;
    font-size: 38px;
  }

  .page-hero {
    padding: calc(var(--header-h) + 72px) 0 84px;
  }

  .contact-form,
  .contact-panel,
  .narrative-block {
    padding: 28px 22px;
  }

  .highlight-block p {
    font-size: 18px;
  }

  .cta {
    padding: 96px 0;
  }

  .cta .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .brand span:last-child {
    max-width: 172px;
  }

  .brand strong,
  .brand small {
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

/* ------------------------------------------------------------
   降低动态偏好
   ------------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }
}