/* ==========================================================================
   网球全链路数字化解决方案 · 官网公共样式
   风格：商务极简 / 运动科技（对标讯飞数字人官网）
   ========================================================================== */

:root {
  /* 色彩系统 */
  --c-bg: #ffffff;
  --c-bg-soft: #f4f7f4;
  --c-bg-mute: #eef2ee;
  --c-dark: #0a1611;
  --c-dark-2: #0f2419;
  --c-dark-3: #123024;
  --c-accent: #c9f25c;
  --c-accent-2: #a9e02f;
  --c-accent-soft: rgba(201, 242, 92, 0.14);
  --c-teal: #1fa97f;
  --c-text: #14201b;
  --c-text-2: #3c4a43;
  --c-muted: #6b7a72;
  --c-line: #e5eae6;
  --c-line-dark: rgba(255, 255, 255, 0.12);

  /* 排版 */
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  /* 尺寸 */
  --nav-h: 72px;
  --radius-s: 10px;
  --radius: 16px;
  --radius-l: 24px;
  --maxw: 1240px;
  --pad: 24px;

  /* 阴影 */
  --shadow-s: 0 2px 10px rgba(15, 36, 25, 0.05);
  --shadow: 0 10px 40px rgba(15, 36, 25, 0.08);
  --shadow-l: 0 24px 70px rgba(15, 36, 25, 0.14);
}

/* ---------------------------------------------------------------- Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

p {
  margin: 0;
}

/* ------------------------------------------------------------ Utilities */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: 108px 0;
}

.section--soft {
  background: var(--c-bg-soft);
}

.section--dark {
  background: var(--c-dark);
  color: #e9f2ec;
}

.section--tight {
  padding: 76px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 56px;
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-teal);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--c-accent-2);
  border-radius: 2px;
}

.section--dark .eyebrow {
  color: var(--c-accent);
}

.section-title {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-title .hl {
  color: var(--c-teal);
}

.section--dark .section-title {
  color: #fff;
}

.section--dark .section-title .hl {
  color: var(--c-accent);
}

.section-desc {
  margin-top: 18px;
  font-size: 16.5px;
  color: var(--c-muted);
  line-height: 1.85;
}

.section--dark .section-desc {
  color: rgba(233, 242, 236, 0.68);
}

.grad-text {
  background: linear-gradient(100deg, var(--c-accent), #7fe3a8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* -------------------------------------------------------------- Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 50px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease,
    color 0.25s ease, border-color 0.25s ease;
  white-space: nowrap;
}

.btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s ease;
}

.btn:hover svg {
  transform: translateX(4px);
}

.btn--accent {
  background: var(--c-accent);
  color: #0b1a12;
}

.btn--accent:hover {
  background: var(--c-accent-2);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(169, 224, 47, 0.32);
}

.btn--dark {
  background: var(--c-dark);
  color: #fff;
}

.btn--dark:hover {
  background: var(--c-dark-3);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(15, 36, 25, 0.25);
}

.btn--ghost {
  border: 1px solid var(--c-line);
  color: var(--c-text);
  background: #fff;
}

.btn--ghost:hover {
  border-color: var(--c-dark);
  transform: translateY(-2px);
}

.btn--ghost-light {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
}

.btn--ghost-light:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  transform: translateY(-2px);
}

.btn--sm {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.btn--block {
  width: 100%;
}

/* ------------------------------------------------------------- Nav bar */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--c-line);
  box-shadow: 0 6px 26px rgba(15, 36, 25, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--c-dark);
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c-dark-2), var(--c-teal));
  display: grid;
  place-items: center;
  flex: none;
}

.brand__mark svg {
  width: 20px;
  height: 20px;
}

.brand__sub {
  display: block;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--c-muted);
  text-transform: uppercase;
  line-height: 1;
  margin-top: 3px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-text-2);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--c-dark);
  background: var(--c-bg-soft);
}

.nav__link svg {
  width: 12px;
  height: 12px;
  transition: transform 0.25s ease;
}

.nav__item:hover > .nav__link svg {
  transform: rotate(180deg);
}

/* Dropdown */
.nav__item {
  position: relative;
}

.dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 340px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-l);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
}

.nav__item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown__item {
  display: flex;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  transition: background 0.2s ease;
}

.dropdown__item:hover {
  background: var(--c-bg-soft);
}

.dropdown__icon {
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 10px;
  background: var(--c-accent-soft);
  color: var(--c-dark);
  display: grid;
  place-items: center;
}

.dropdown__icon svg {
  width: 19px;
  height: 19px;
}

.dropdown__title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-text);
}

.dropdown__desc {
  font-size: 12.5px;
  color: var(--c-muted);
  line-height: 1.55;
}

.nav__cta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: 8px;
}

.nav__burger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: var(--c-dark);
  place-items: center;
}

.nav__burger svg {
  width: 22px;
  height: 22px;
}

/* Mobile nav panel */
.mobile-nav {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: #fff;
  padding: 20px var(--pad) 40px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__group {
  border-bottom: 1px solid var(--c-line);
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 2px;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-dark);
}

.mobile-nav__sub {
  padding: 0 0 12px 4px;
  display: none;
}

.mobile-nav__sub.is-open {
  display: block;
}

.mobile-nav__sub a {
  display: block;
  padding: 11px 0;
  font-size: 15px;
  color: var(--c-muted);
}

.mobile-nav__sub a:hover {
  color: var(--c-teal);
}

.mobile-nav .btn {
  margin-top: 26px;
}

/* ---------------------------------------------------------------- Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 80px;
  color: #fff;
  overflow: hidden;
  background: var(--c-dark);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url("../images/hero-tennis.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
  animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
  to {
    transform: scale(1);
  }
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
      100deg,
      rgba(6, 20, 14, 0.7) 0%,
      rgba(6, 20, 14, 0.42) 42%,
      rgba(6, 20, 14, 0.1) 100%
    ),
    linear-gradient(0deg, rgba(6, 20, 14, 0.55), transparent 42%);
}

.hero__glow {
  position: absolute;
  width: 620px;
  height: 620px;
  right: -120px;
  top: -120px;
  background: radial-gradient(circle, rgba(201, 242, 92, 0.22), transparent 62%);
  filter: blur(20px);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px 8px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
}

.hero__badge b {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--c-accent);
  color: #0b1a12;
  font-size: 12px;
  font-weight: 700;
}

.hero__title {
  font-size: clamp(36px, 5.4vw, 66px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: #fff;
}

.hero__title em {
  font-style: normal;
  color: var(--c-accent);
}

.hero__sub {
  margin-top: 26px;
  font-size: clamp(16px, 1.5vw, 19px);
  color: rgba(255, 255, 255, 0.78);
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.hero__sub span {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.hero__sub span::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-accent);
}

.hero__sub span:last-child::after {
  display: none;
}

.hero__actions {
  margin-top: 42px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__stats {
  position: relative;
  z-index: 2;
  margin-top: 74px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.hero__stat {
  display: block;
  transition: transform 0.3s ease;
}

.hero__stat b {
  display: block;
  font-size: clamp(19px, 2vw, 25px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  line-height: 1.25;
  transition: color 0.3s ease;
}

.hero__stat b i {
  font-style: normal;
  color: var(--c-accent);
}

.hero__stat span {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.3s ease;
}

.hero__stat:hover {
  transform: translateY(-3px);
}

.hero__stat:hover b {
  color: var(--c-accent);
}

.hero__stat:hover span {
  color: rgba(255, 255, 255, 0.82);
}

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

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

/* 支持平台 */
.plat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
  margin-top: 8px;
}

.plat {
  background: #fff;
  border: 1px solid rgba(10, 22, 17, 0.08);
  border-radius: var(--radius-l);
  padding: 30px 24px;
  text-align: center;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.plat:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-l);
  border-color: rgba(31, 169, 127, 0.35);
}

.plat__icon {
  width: 58px;
  height: 58px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  margin: 0 auto 18px;
  background: #fff;
  border: 1px solid rgba(10, 22, 17, 0.08);
}

.plat__icon svg {
  width: 30px;
  height: 30px;
}

.plat__icon img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.plat__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-dark);
  margin-bottom: 10px;
}

.plat__desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--c-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.p-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 32px 28px 30px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.3, 1), box-shadow 0.35s ease,
    border-color 0.35s ease;
}

.p-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent-2), var(--c-teal));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.p-card:hover {
  transform: translateY(-8px);
  border-color: transparent;
  box-shadow: var(--shadow-l);
}

.p-card:hover::before {
  transform: scaleX(1);
}

.p-card__no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  margin-bottom: 22px;
}

.p-card__icon {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--c-bg-mute), #fff);
  border: 1px solid var(--c-line);
  color: var(--c-dark);
  margin-bottom: 22px;
  transition: background 0.35s ease, color 0.35s ease, border-color 0.35s ease;
}

.p-card:hover .p-card__icon {
  background: linear-gradient(135deg, var(--c-dark-2), var(--c-teal));
  border-color: transparent;
  color: var(--c-accent);
}

.p-card__icon svg {
  width: 26px;
  height: 26px;
}

.p-card__title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.p-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.p-card__tag {
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--c-accent-soft);
  color: #3f5b1a;
  font-size: 12.5px;
  font-weight: 600;
}

.p-card__desc {
  margin-top: 18px;
  font-size: 14.5px;
  color: var(--c-muted);
  line-height: 1.85;
  flex: 1;
}

.p-card__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-dark);
}

.p-card__more svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s ease;
}

.p-card:hover .p-card__more svg {
  transform: translateX(5px);
}

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

.value-card {
  position: relative;
  padding: 38px 32px;
  border-radius: var(--radius-l);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-line-dark);
  transition: background 0.35s ease, transform 0.35s ease, border-color 0.35s ease;
}

.value-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(201, 242, 92, 0.4);
  transform: translateY(-6px);
}

.value-card__role {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 20px;
}

.value-card__role svg {
  width: 18px;
  height: 18px;
}

.value-card h3 {
  font-size: 21px;
  color: #fff;
  margin-bottom: 18px;
}

.value-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 13px;
  font-size: 14.5px;
  color: rgba(233, 242, 236, 0.72);
  line-height: 1.75;
}

.value-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-accent);
}

/* ---------------------------------------------------------------- Cases */
.case-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.3, 1), box-shadow 0.35s ease;
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-l);
}

.case-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--c-bg-mute);
}

.case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.case-card:hover .case-card__media img {
  transform: scale(1.06);
}

.case-card__cat {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(10, 22, 17, 0.78);
  backdrop-filter: blur(6px);
  color: var(--c-accent);
  font-size: 12.5px;
  font-weight: 600;
}

.case-card__body {
  padding: 28px 26px 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-card__title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.case-card__desc {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--c-muted);
  line-height: 1.8;
  flex: 1;
}

.case-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.case-card__meta span {
  padding: 4px 12px;
  border-radius: 8px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  font-size: 12.5px;
  color: var(--c-text-2);
}

.case-card__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--c-dark);
}

.case-card__more svg {
  width: 15px;
  height: 15px;
  transition: transform 0.3s ease;
}

.case-card:hover .case-card__more svg {
  transform: translateX(5px);
}

/* ------------------------------------------------------------------ FAQ */
.faq {
  max-width: 860px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq__item.is-open {
  border-color: rgba(31, 169, 127, 0.4);
  box-shadow: var(--shadow-s);
}

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--c-text);
}

.faq__icon {
  width: 30px;
  height: 30px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  display: grid;
  place-items: center;
  transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease,
    color 0.3s ease;
}

.faq__icon svg {
  width: 14px;
  height: 14px;
}

.faq__item.is-open .faq__icon {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: var(--c-accent);
  transform: rotate(180deg);
}

.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq__a p {
  padding: 0 26px 24px;
  font-size: 15px;
  color: var(--c-muted);
  line-height: 1.9;
}

/* ------------------------------------------------------------ Consulting */
.consult {
  position: relative;
  overflow: hidden;
  background: var(--c-dark);
  color: #fff;
  border-radius: var(--radius-l);
  padding: 64px;
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 56px;
  align-items: stretch;
}

.consult::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  right: -140px;
  bottom: -180px;
  background: radial-gradient(circle, rgba(31, 169, 127, 0.35), transparent 65%);
  pointer-events: none;
}

.consult__info {
  position: relative;
  z-index: 2;
}

.consult__info h2 {
  font-size: clamp(26px, 3vw, 38px);
  color: #fff;
  letter-spacing: -0.02em;
}

.consult__info > p {
  margin-top: 18px;
  color: rgba(233, 242, 236, 0.7);
  font-size: 16px;
  max-width: 480px;
  line-height: 1.85;
}

.consult__contacts {
  margin-top: 40px;
  display: grid;
  gap: 16px;
}

.consult__contact {
  display: flex;
  align-items: center;
  gap: 16px;
}

.consult__contact-icon {
  width: 46px;
  height: 46px;
  flex: none;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--c-line-dark);
  display: grid;
  place-items: center;
  color: var(--c-accent);
}

.consult__contact-icon svg {
  width: 20px;
  height: 20px;
}

.consult__contact-label {
  display: block;
  font-size: 12.5px;
  color: rgba(233, 242, 236, 0.55);
  letter-spacing: 0.04em;
}

.consult__contact-value {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.form-card {
  position: relative;
  z-index: 2;
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 32px;
  color: var(--c-text);
}

.form-card__title {
  font-size: 19px;
  font-weight: 700;
}

.form-card__desc {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--c-muted);
}

.form-row {
  margin-top: 18px;
}

.form-row label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--c-text-2);
  margin-bottom: 8px;
}

.form-row label i {
  font-style: normal;
  color: #e06a6a;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 15px;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.form-textarea {
  min-height: 96px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #9aa8a1;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--c-teal);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(31, 169, 127, 0.12);
}

.form-check {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.form-check__item {
  position: relative;
}

.form-check__item input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.form-check__item span {
  display: inline-block;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--c-line);
  background: var(--c-bg-soft);
  font-size: 13.5px;
  color: var(--c-text-2);
  cursor: pointer;
  transition: all 0.25s ease;
}

.form-check__item input:checked + span {
  background: var(--c-dark);
  border-color: var(--c-dark);
  color: var(--c-accent);
}

.form-note {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--c-muted);
  text-align: center;
  line-height: 1.7;
}

/* --------------------------------------------------------------- Footer */
.footer {
  background: var(--c-dark);
  color: rgba(233, 242, 236, 0.66);
  padding: 76px 0 34px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--c-line-dark);
}

.footer .brand {
  color: #fff;
}

.footer__about {
  margin-top: 22px;
  font-size: 14px;
  line-height: 1.85;
  max-width: 320px;
}

.footer__title {
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer__links li {
  margin-bottom: 13px;
}

.footer__links a {
  font-size: 14px;
  color: rgba(233, 242, 236, 0.66);
}

.footer__links a:hover {
  color: var(--c-accent);
}

.footer__contact li {
  display: flex;
  gap: 11px;
  margin-bottom: 15px;
  font-size: 14px;
}

.footer__contact svg {
  width: 17px;
  height: 17px;
  flex: none;
  margin-top: 3px;
  color: var(--c-accent);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 28px;
  font-size: 13px;
}

.footer__bottom span {
  color: rgba(233, 242, 236, 0.5);
}

.footer__beian {
  color: rgba(233, 242, 236, 0.5);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__beian:hover {
  color: rgba(233, 242, 236, 0.9);
}

/* ------------------------------------------------------------ Inner page */
.page-banner {
  position: relative;
  padding: calc(var(--nav-h) + 96px) 0 92px;
  background: linear-gradient(118deg, rgba(201, 242, 92, 0.82) 0%, rgba(155, 227, 107, 0.46) 48%, rgba(31, 169, 127, 0.72) 100%);
  color: #0b1a12;
  overflow: hidden;
}

.page-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.85;
}

.page-banner__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    rgba(255, 255, 255, 0.74),
    rgba(255, 255, 255, 0.34) 55%,
    rgba(255, 255, 255, 0.06)
  );
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(11, 26, 18, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 26, 18, 0.06) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(circle at 25% 40%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 25% 40%, #000, transparent 72%);
  pointer-events: none;
}

.page-banner__inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.crumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: rgba(11, 26, 18, 0.6);
  margin-bottom: 22px;
}

.crumb a:hover {
  color: var(--c-accent);
}

.crumb svg {
  width: 13px;
  height: 13px;
  opacity: 0.6;
}

.page-banner h1 {
  font-size: clamp(30px, 4.2vw, 52px);
  color: #0b1a12;
  letter-spacing: -0.025em;
}

.page-banner__sub {
  margin-top: 22px;
  font-size: 17px;
  color: rgba(11, 26, 18, 0.82);
  line-height: 1.85;
  max-width: 640px;
}

.page-banner__tags {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-banner__tag {
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid rgba(11, 26, 18, 0.22);
  background: rgba(255, 255, 255, 0.5);
  font-size: 13.5px;
  color: rgba(11, 26, 18, 0.9);
}

/* Overview split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split--reverse .split__media {
  order: 2;
}

.split__media {
  position: relative;
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-l);
}

.split__media img {
  width: 100%;
  aspect-ratio: 1200 / 704;
  object-fit: cover;
}

.split__content h2 {
  font-size: clamp(26px, 3vw, 36px);
  letter-spacing: -0.02em;
}

.split__content > p {
  margin-top: 20px;
  font-size: 16px;
  color: var(--c-muted);
  line-height: 1.9;
}

.split__points {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}

.split__point {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--c-text-2);
}

.split__point svg {
  width: 20px;
  height: 20px;
  flex: none;
  margin-top: 3px;
  color: var(--c-teal);
}

/* Capability cards */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.cap-card {
  position: relative;
  padding: 34px 32px;
  border-radius: var(--radius-l);
  background: #fff;
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.cap-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-l);
  border-color: transparent;
}

.cap-card__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.cap-card__no {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-teal);
  letter-spacing: 0.04em;
  padding: 5px 12px;
  border-radius: 9px;
  background: var(--c-accent-soft);
  flex: none;
}

.cap-card__title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.cap-card__desc {
  font-size: 14.5px;
  color: var(--c-muted);
  line-height: 1.85;
}

.cap-card__icon {
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 108px;
  height: 108px;
  color: var(--c-bg-mute);
  opacity: 0.85;
  transition: color 0.35s ease, transform 0.35s ease;
}

.cap-card:hover .cap-card__icon {
  color: var(--c-accent-soft);
  transform: rotate(-8deg) scale(1.06);
}

/* Scenario chips */
.scene-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.scene-chip {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--c-line);
  font-size: 15.5px;
  font-weight: 500;
  color: var(--c-text);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.scene-chip:hover {
  transform: translateY(-4px);
  border-color: var(--c-teal);
  box-shadow: var(--shadow-s);
}

.scene-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent-2);
  flex: none;
}

/* Feature list (dark band) */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feat-card {
  padding: 34px 30px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-line-dark);
  transition: background 0.3s ease, transform 0.3s ease;
}

.feat-card:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-6px);
}

.feat-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--c-accent-soft);
  color: var(--c-accent);
  margin-bottom: 20px;
}

.feat-card__icon svg {
  width: 23px;
  height: 23px;
}

.feat-card h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 12px;
}

.feat-card p {
  font-size: 14.5px;
  color: rgba(233, 242, 236, 0.68);
  line-height: 1.8;
}

/* Numbered flow */
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.flow-item {
  position: relative;
  padding-top: 26px;
  border-top: 2px solid var(--c-line);
}

.flow-item::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--c-teal);
  margin-bottom: 14px;
}

.flow-item h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.flow-item p {
  font-size: 14px;
  color: var(--c-muted);
  line-height: 1.8;
}

/* CTA band */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  padding: 68px 56px;
  background: linear-gradient(115deg, var(--c-dark-2), var(--c-dark) 60%, #06110c);
  color: #fff;
  text-align: center;
}

.cta-band::before {
  content: "";
  position: absolute;
  width: 640px;
  height: 640px;
  left: 50%;
  top: -320px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(201, 242, 92, 0.2), transparent 62%);
  pointer-events: none;
}

.cta-band__inner {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
}

.cta-band h2 {
  font-size: clamp(26px, 3.2vw, 38px);
  color: #fff;
  letter-spacing: -0.02em;
}

.cta-band p {
  margin-top: 18px;
  color: rgba(233, 242, 236, 0.7);
  font-size: 16px;
  line-height: 1.85;
}

.cta-band__actions {
  margin-top: 36px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* -------------------------------------------------------------- Reveal */
/* 仅在脚本确认可接管后再隐藏，确保 JS 异常/被禁用时内容依然完整可见 */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.3, 1),
    transform 0.7s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.js-reveal .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------- Back to top */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--c-dark);
  color: var(--c-accent);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-l);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.to-top.is-show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top svg {
  width: 20px;
  height: 20px;
}

/* ------------------------------------------------------------ Responsive */
@media (max-width: 1080px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
  .consult {
    grid-template-columns: 1fr;
    padding: 48px 40px;
    gap: 40px;
  }
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
  }
  .flow {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (max-width: 900px) {
  .nav__menu,
  .nav__cta .btn {
    display: none;
  }
  .nav__burger {
    display: grid;
  }
  .section {
    padding: 78px 0;
  }
  .grid-3,
  .value-grid,
  .feat-grid {
    grid-template-columns: 1fr;
  }
  .grid-2,
  .cap-grid {
    grid-template-columns: 1fr;
  }
  .split {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .split--reverse .split__media {
    order: 0;
  }
  .hero__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 20px;
    margin-top: 56px;
  }
  .hero {
    min-height: auto;
    padding: calc(var(--nav-h) + 64px) 0 72px;
  }
  .cta-band {
    padding: 48px 28px;
  }
}

@media (max-width: 640px) {
  :root {
    --pad: 20px;
  }
  .section {
    padding: 64px 0;
  }
  .grid-4 {
    grid-template-columns: 1fr;
  }
  .grid-5 {
    grid-template-columns: 1fr;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .hero__sub {
    gap: 10px;
  }
  .hero__sub span {
    gap: 10px;
  }
  .hero__actions {
    margin-top: 32px;
  }
  .hero__actions .btn {
    flex: 1;
    min-width: 0;
    padding: 0 18px;
  }
  .consult {
    padding: 36px 22px;
  }
  .form-card {
    padding: 26px 20px;
  }
  .footer__top {
    grid-template-columns: 1fr;
  }
  .flow {
    grid-template-columns: 1fr;
  }
  .page-banner {
    padding: calc(var(--nav-h) + 64px) 0 64px;
  }
  .cap-card,
  .p-card {
    padding: 26px 22px;
  }
  .to-top {
    right: 18px;
    bottom: 18px;
  }
}

/* --------------------------------------------------------------- Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js-reveal .reveal {
    opacity: 1;
    transform: none;
  }
}