@font-face {
  font-family: "HarmonyOS Sans SC";
  src: url("fonts/harmonyos-sans/HarmonyOS_Sans_SC_Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "HarmonyOS Sans SC";
  src: url("fonts/harmonyos-sans/HarmonyOS_Sans_SC_Bold.woff2") format("woff2");
  font-weight: 800;
  font-display: swap;
}

:root {
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --blue: #0066cc;
  --surface: #f5f5f7;
  --white: #fbfbfd;
  --safe: min(1180px, calc(100vw - 44px));
  --glass-bg: rgba(255, 255, 255, .58);
  --glass-bg-strong: rgba(255, 255, 255, .72);
  --glass-line: rgba(255, 255, 255, .54);
  --glass-shadow: 0 24px 80px rgba(0, 0, 0, .10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden !important;
}

body {
  margin: 0;
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 16% 34%, rgba(0, 113, 227, .08), transparent 28%),
    radial-gradient(circle at 88% 58%, rgba(191, 72, 0, .06), transparent 30%),
    linear-gradient(180deg, #fbfbfd 0%, var(--surface) 36%, #f1f5fb 100%);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-break: strict;
  word-break: normal;
  overflow-x: hidden !important;
}

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

button,
input,
textarea {
  font: inherit;
}

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  background:
    linear-gradient(180deg, rgba(251, 251, 253, .78), rgba(251, 251, 253, .66)),
    rgba(251, 251, 253, .72);
  border-bottom: 1px solid rgba(29, 29, 31, .06);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .54), 0 14px 38px rgba(29, 29, 31, .045);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
}

.topbar::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(29,29,31,.075), transparent);
  pointer-events: none;
}

.topbar-inner {
  position: relative;
  width: var(--safe);
  height: 52px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
}

.brand-logo {
  width: 30px;
  height: 30px;
  object-fit: contain;
  filter: drop-shadow(0 1px 0 rgba(255,255,255,.4));
}

.brand strong {
  display: block;
  overflow: hidden;
  max-width: 260px;
  color: rgba(29,29,31,.86);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.brand span span {
  display: none;
}

.nav {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  min-height: 32px;
  color: rgba(29,29,31,.64);
  font-size: 12px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0;
  white-space: nowrap;
}

.nav a,
.nav-cta {
  transition: color .18s ease, opacity .18s ease;
}

.nav a:hover,
.nav a.active {
  color: #1d1d1f;
}

.nav-cta:hover {
  color: var(--blue);
}

.nav-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 50px;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(0, 113, 227, .96), rgba(0, 95, 199, .92)),
    #0071e3;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 8px 18px rgba(0,113,227,.18);
  color: #fff;
  font-size: 12px;
  line-height: 1;
  text-align: center;
}

.nav-cta:hover {
  color: #fff;
  opacity: .86;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(29, 29, 31, .07);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.82), rgba(255,255,255,.58)),
    rgba(251,251,253,.72);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 8px 22px rgba(29,29,31,.06);
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  width: 15px;
  height: 2px;
  border-radius: 999px;
  background: rgba(29,29,31,.86);
  transition: transform .22s ease;
}

.menu-toggle span:first-child {
  transform: translateY(-4px);
}

.menu-toggle span:last-child {
  transform: translateY(4px);
}

.menu-toggle.is-active span:first-child {
  transform: rotate(45deg);
}

.menu-toggle.is-active span:last-child {
  transform: rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #000;
  color: #fff;
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.72) 0%, rgba(0,0,0,.45) 38%, rgba(0,0,0,.10) 72%),
    linear-gradient(180deg, rgba(0,0,0,.22) 0%, rgba(0,0,0,.12) 52%, rgba(0,0,0,.52) 100%),
    url("hero-energy-campus-clean.jpg") center / cover no-repeat;
  transform: scale(1.03);
  animation: heroDrift 18s ease-out forwards;
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: var(--safe);
  padding-top: 52px;
  animation: heroRise .9s cubic-bezier(.2, .8, .2, 1) both;
}

.hero-brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.hero-logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: drop-shadow(0 8px 22px rgba(0,0,0,.26));
}

.hero-brand {
  margin: 0;
  color: rgba(255,255,255,.88);
  font-size: clamp(20px, 2.1vw, 30px);
  font-weight: 800;
  letter-spacing: -.02em;
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.16;
  letter-spacing: -.012em;
  font-weight: 800;
}

.hero-subtitle {
  max-width: 610px;
  margin: 22px 0 0;
  color: rgba(255,255,255,.82);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.72;
  letter-spacing: 0;
}

.hero-actions,
.link-row,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  margin-top: 26px;
}

.hero-actions a,
.link-row a,
.depth-copy a,
.form-actions a {
  color: #2997ff;
  font-size: 21px;
  font-weight: 500;
}

.hero-actions a::after,
.link-row a::after,
.depth-copy a::after,
.form-actions a::after {
  content: " >";
}

.hero-actions a.nav-cta::after {
  content: none;
}

.hero-actions a.nav-cta {
  color: #fff;
  font-size: 17px;
  min-height: 44px;
  padding: 0 18px;
}

.hero-actions a.nav-cta:hover {
  text-decoration: none;
  color: #fff;
}

.hero-actions a:hover,
.link-row a:hover,
.depth-copy a:hover,
.form-actions a:hover {
  text-decoration: underline;
}

.statement {
  width: var(--safe);
  margin: 0 auto;
  padding: 110px 0 96px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: #bf4800;
  font-size: 18px;
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: .01em;
}

.statement h2,
.story h2,
.depth-copy h2,
.apply h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.16;
  letter-spacing: -.012em;
  font-weight: 800;
}

.statement > p:not(.eyebrow),
.story-text p:not(.eyebrow),
.depth-copy p:not(.eyebrow),
.apply-copy p:not(.eyebrow) {
  max-width: 680px;
  margin: 20px auto 0;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.72;
  letter-spacing: 0;
}

.statement .link-row {
  justify-content: center;
}

.support-carousel {
  position: relative;
  width: min(1180px, 100%);
  margin: 64px auto 0;
  overflow: visible;
  padding-bottom: 54px;
}

.carousel-track {
  position: relative;
  min-height: 640px;
  overflow: visible;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(980px, 82vw);
  height: 640px;
  margin: 0;
  opacity: 0;
  border: 1px solid rgba(255,255,255,.70);
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 34px 90px rgba(0,0,0,.12);
  transform: translateX(-50%) scale(.78) rotateY(0deg);
  transition: opacity .86s ease, transform .86s cubic-bezier(.16,1,.3,1), filter .86s ease, box-shadow .86s ease;
  pointer-events: none;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 3;
  filter: none;
  box-shadow: 0 46px 130px rgba(0,0,0,.14), inset 0 1px 0 rgba(255,255,255,.86);
  transform: translateX(-50%) scale(1) rotateY(0deg);
  pointer-events: auto;
}

.carousel-slide.prev {
  opacity: .72;
  z-index: 2;
  filter: saturate(.86) brightness(.94) blur(.2px);
  transform: translateX(calc(-50% - 520px)) scale(.82) rotateY(3deg);
}

.carousel-slide.next {
  opacity: .72;
  z-index: 2;
  filter: saturate(.86) brightness(.94) blur(.2px);
  transform: translateX(calc(-50% + 520px)) scale(.82) rotateY(-3deg);
}

.carousel-slide.far-prev {
  opacity: .42;
  z-index: 1;
  filter: saturate(.72) brightness(.88) blur(.6px);
  transform: translateX(calc(-50% - 880px)) scale(.68) rotateY(5deg);
}

.carousel-slide.far-next {
  opacity: .42;
  z-index: 1;
  filter: saturate(.72) brightness(.88) blur(.6px);
  transform: translateX(calc(-50% + 880px)) scale(.68) rotateY(-5deg);
}

.carousel-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.06);
  transition: transform 5.2s cubic-bezier(.16,1,.3,1);
}

.carousel-slide.active img {
  transform: scale(1);
}

.carousel-slide::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 38%;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.42));
  pointer-events: none;
}

.carousel-slide figcaption {
  position: absolute;
  left: 34px;
  bottom: 30px;
  z-index: 2;
  max-width: 420px;
  margin: 0;
  color: #fff;
  font-size: clamp(22px, 2.4vw, 34px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -.04em;
  text-align: left;
}

.carousel-controls {
  position: absolute;
  left: 50%;
  right: auto;
  bottom: 0;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
}

.carousel-dot {
  border: 0;
  cursor: pointer;
}

.carousel-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  padding: 0;
  background: rgba(0,0,0,.18);
  transition: transform .22s ease, background .22s ease, opacity .22s ease;
}

.carousel-dot.active {
  background: #111;
  transform: scale(1.2);
}

.story {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(420px, 1.1fr);
  gap: 42px;
  align-items: center;
  width: var(--safe);
  margin: 0 auto 18px;
  padding: 88px 0;
  border-top: 1px solid rgba(0,0,0,.08);
}

.story-text {
  position: sticky;
  top: 98px;
}

.steps {
  display: grid;
  gap: 10px;
  border-radius: 36px;
  border: 1px solid rgba(255,255,255,.64);
  background:
    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.52)),
    rgba(255,255,255,.42);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,.88);
  backdrop-filter: blur(30px) saturate(150%);
  -webkit-backdrop-filter: blur(30px) saturate(150%);
  padding: 12px;
  overflow: hidden;
}

.steps span {
  position: relative;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 8px 18px;
  align-items: center;
  padding: 22px 24px;
  border: 1px solid transparent;
  border-radius: 24px;
  color: var(--ink);
  background: rgba(255,255,255,.36);
  transition: background .22s ease, transform .22s ease, color .22s ease;
}

.steps em {
  grid-row: span 2;
  color: #86868b;
  font-size: 13px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: .08em;
}

.steps strong {
  display: block;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1;
  letter-spacing: -.045em;
}

.steps small {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.45;
}

.steps span:hover {
  border-color: rgba(255,255,255,.56);
  background: rgba(255,255,255,.64);
  color: var(--blue);
  transform: translateX(6px);
}

.depth {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
  gap: 48px;
  align-items: center;
  width: var(--safe);
  min-height: 720px;
  margin: 0 auto;
  padding: 82px 0;
}

.depth-visual {
  position: relative;
  min-height: 560px;
  border-radius: 44px;
  border: 1px solid rgba(255,255,255,.72);
  background:
    radial-gradient(circle at 50% 44%, rgba(0,113,227,.18), transparent 29%),
    linear-gradient(180deg, rgba(255,255,255,.86), rgba(234,242,255,.56)),
    rgba(255,255,255,.42);
  box-shadow: 0 32px 100px rgba(0, 72, 160, .10), inset 0 1px 0 rgba(255,255,255,.92);
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  overflow: hidden;
  transform: translateZ(0);
}

.depth-visual::before {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: 1;
  border-radius: 43px;
  background:
    linear-gradient(120deg, rgba(255,255,255,.40), transparent 34%),
    linear-gradient(180deg, transparent 58%, rgba(0,0,0,.16));
  pointer-events: none;
}

.depth-photo {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  filter: saturate(1.02) contrast(1.02);
}

.depth-copy {
  padding-right: 18px;
}

.apply {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(420px, 1.18fr);
  gap: 48px;
  width: var(--safe);
  margin: 0 auto;
  padding: 112px 0 120px;
  border-top: 1px solid rgba(0,0,0,.08);
}

.apply-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 32px;
  border-radius: 34px;
  border: 1px solid rgba(255,255,255,.66);
  background:
    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.56)),
    rgba(255,255,255,.46);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,.90);
  backdrop-filter: blur(30px) saturate(155%);
  -webkit-backdrop-filter: blur(30px) saturate(155%);
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row.full {
  grid-column: 1 / -1;
}

label {
  color: #424245;
  font-size: 13px;
  font-weight: 800;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.62);
  border-radius: 14px;
  padding: 14px 15px;
  outline: none;
  background:
    linear-gradient(180deg, rgba(255,255,255,.66), rgba(255,255,255,.42)),
    rgba(245,245,247,.48);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.76), inset 0 -1px 0 rgba(0,0,0,.03);
  color: var(--ink);
  backdrop-filter: blur(16px) saturate(135%);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
}

textarea {
  min-height: 116px;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: #0071e3;
  box-shadow: 0 0 0 4px rgba(0,113,227,.13);
}

.form-actions {
  grid-column: 1 / -1;
  margin-top: 8px;
}

.form-actions button {
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  padding: 0 22px;
  background:
    linear-gradient(180deg, rgba(0, 113, 227, .98), rgba(0, 95, 199, .94)),
    #0071e3;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.24), 0 12px 26px rgba(0,113,227,.20);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
  transition: transform .18s ease, opacity .18s ease;
}

.form-actions button:hover {
  transform: translateY(-1px);
  opacity: .9;
}

.footer {
  border-top: 1px solid rgba(0,0,0,.08);
  background: var(--surface);
}

.footer-inner {
  width: var(--safe);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0;
  color: #6e6e73;
  font-size: 12px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 50;
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  padding: 13px 18px;
  border-radius: 999px;
  background: rgba(29,29,31,.92);
  color: #fff;
  transition: .22s ease;
}

.toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

.apply-demo-page {
  background:
    radial-gradient(circle at 12% 18%, rgba(0, 113, 227, .10), transparent 28%),
    radial-gradient(circle at 90% 38%, rgba(52, 199, 89, .08), transparent 30%),
    linear-gradient(180deg, #fbfbfd 0%, #f4f8fd 48%, #eef4fb 100%);
}

.embedded-view.apply-demo-page,
html.embedded-view {
  background: transparent;
}

.embedded-view.apply-demo-page .topbar,
.embedded-view.apply-demo-page .footer {
  display: none;
}

.embedded-view.apply-demo-page .apply-demo-hero {
  min-height: 0;
  padding: 24px 0 72px;
}

.embedded-view.apply-demo-page .apply-demo-flow {
  padding-bottom: 72px;
}

.embedded-view.apply-demo-page .apply-demo-form-section {
  padding-top: 72px;
}

.apply-demo-hero {
  width: var(--safe);
  min-height: 680px;
  margin: 0 auto;
  padding: 124px 0 82px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, .62fr);
  align-items: center;
  gap: 42px;
}

.apply-demo-copy h1,
.apply-demo-flow h2 {
  max-width: 780px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.16;
  letter-spacing: -.012em;
  font-weight: 800;
}

.apply-demo-copy p:not(.eyebrow),
.apply-demo-flow > p:not(.eyebrow) {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.72;
  letter-spacing: 0;
  text-wrap: pretty;
}

.apply-demo-panel,
.apply-demo-steps article {
  border: 1px solid rgba(255,255,255,.68);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.82), rgba(255,255,255,.58)),
    rgba(255,255,255,.48);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,.88);
  backdrop-filter: blur(28px) saturate(155%);
  -webkit-backdrop-filter: blur(28px) saturate(155%);
}

.apply-demo-panel {
  padding: 30px;
}

.apply-demo-ai-card {
  position: relative;
  min-height: 360px;
  padding: 0;
  overflow: hidden;
  border-color: rgba(255,255,255,.76);
  background: #07111d;
}

.apply-demo-ai-card img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  object-position: center;
}

.apply-demo-ai-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(4,13,24,.08) 28%, rgba(4,13,24,.48) 62%, rgba(4,13,24,.88) 100%),
    linear-gradient(90deg, rgba(4,13,24,.48), rgba(4,13,24,.08) 55%, rgba(4,13,24,.18));
}

.apply-demo-ai-copy {
  position: absolute;
  left: 26px;
  right: 28px;
  bottom: 26px;
  z-index: 1;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.apply-demo-ai-copy strong {
  margin: 0;
  color: #fff;
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.06;
  letter-spacing: -.025em;
  text-shadow: 0 8px 24px rgba(0,0,0,.28);
}

.apply-demo-ai-copy p {
  max-width: 360px;
  margin: 12px 0 0;
  color: rgba(255,255,255,.84);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.58;
  letter-spacing: 0;
  text-shadow: 0 8px 24px rgba(0,0,0,.28);
}

.apply-demo-panel strong {
  display: block;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.16;
  letter-spacing: -.012em;
}

.apply-demo-panel .apply-demo-ai-copy strong {
  margin: 0;
  color: #fff;
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.06;
  letter-spacing: -.025em;
}

.apply-demo-panel ol {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-left: 20px;
  color: #424245;
  line-height: 1.68;
}

.apply-demo-flow {
  width: var(--safe);
  margin: 0 auto;
  padding: 0 0 106px;
}

.apply-demo-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.apply-demo-steps article {
  min-height: 220px;
  padding: 26px;
}

.apply-demo-steps span {
  color: #0066cc;
  font-size: 13px;
  font-weight: 900;
}

.apply-demo-steps strong {
  display: block;
  margin-top: 28px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.16;
  letter-spacing: -.012em;
}

.apply-demo-steps p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.72;
  letter-spacing: 0;
}

.apply-demo-form-section {
  padding-top: 100px;
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(26px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.08);
  }
  to {
    transform: scale(1.01);
  }
}

@keyframes logoFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 900px) {
  .topbar-inner {
    width: calc(100vw - 24px);
    min-height: 56px;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
  }

  .brand {
    min-width: 0;
  }

  .nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    width: 100vw;
    max-width: none;
    min-width: 0;
    padding: 22px max(28px, calc((100vw - 520px) / 2)) 32px;
    border: 0;
    border-top: 1px solid rgba(29,29,31,.055);
    border-radius: 0 0 30px 30px;
    background:
      linear-gradient(180deg, rgba(251,251,253,.92), rgba(251,251,253,.82)),
      rgba(251,251,253,.86);
    box-shadow: 0 28px 70px rgba(29,29,31,.10), inset 0 1px 0 rgba(255,255,255,.72);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-14px);
    transform-origin: top center;
    pointer-events: none;
    transition: opacity .24s ease, transform .28s cubic-bezier(.2,.8,.2,1), visibility .24s ease;
  }

  .topbar.is-menu-open .nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    max-width: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0);
    pointer-events: auto !important;
  }

  .nav a {
    justify-content: flex-start;
    min-height: 56px;
    padding: 0;
    border-radius: 0;
    border-bottom: 1px solid rgba(29,29,31,.07);
    color: #1d1d1f;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -.025em;
  }

  .nav a:last-child {
    border-bottom: 0;
  }

  .nav-cta {
    min-height: 32px;
    padding: 0 13px;
  }

  .menu-toggle {
    position: relative;
    display: inline-flex;
  }

  .brand strong {
    max-width: min(52vw, 190px);
  }

  .hero {
    align-items: end;
    min-height: 720px;
    height: 720px;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(0,0,0,.18) 0%, rgba(0,0,0,.54) 58%, rgba(0,0,0,.78) 100%),
      url("hero-energy-campus-clean.jpg") center / cover no-repeat;
  }

  .hero-copy {
    padding: 0 0 56px;
  }

  .carousel-track {
    min-height: 470px;
    overflow: hidden;
    border-radius: 28px;
  }

  .carousel-slide {
    width: 100%;
    height: 470px;
    border-radius: 28px;
  }

  .carousel-slide.prev {
    transform: translateX(calc(-50% - 86vw)) scale(.84);
  }

  .carousel-slide.next {
    transform: translateX(calc(-50% + 86vw)) scale(.84);
  }

  .carousel-slide.far-prev {
    opacity: .22;
    transform: translateX(calc(-50% - 132vw)) scale(.70);
  }

  .carousel-slide.far-next {
    opacity: .22;
    transform: translateX(calc(-50% + 132vw)) scale(.70);
  }

  .carousel-slide figcaption {
    left: 22px;
    right: 22px;
    bottom: 72px;
  }

  .carousel-controls {
    right: 18px;
    bottom: 18px;
  }

  .story,
  .depth,
  .apply,
  .apply-demo-hero,
  .apply-demo-steps {
    grid-template-columns: 1fr;
    padding: 72px 0;
  }

  .apply-demo-hero {
    min-height: auto;
    padding-top: 104px;
  }

  .apply-demo-copy h1,
  .apply-demo-flow h2 {
    font-size: clamp(42px, 12vw, 64px);
  }

  .apply-demo-flow {
    padding-bottom: 72px;
  }

  .story-text {
    position: static;
  }

  .depth {
    min-height: auto;
  }

  .depth-visual {
    min-height: 420px;
    order: 2;
  }

  .depth-photo {
    min-height: 420px;
  }

  .apply-form {
    grid-template-columns: 1fr;
    padding: 22px;
  }
}

/* 工具中心：延续首页的 Apple 风格，但以操作为主 */
.tools-page {
  background:
    radial-gradient(circle at 10% 16%, rgba(0, 113, 227, .10), transparent 26%),
    radial-gradient(circle at 88% 52%, rgba(191, 72, 0, .05), transparent 30%),
    linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 42%, #eef4fb 100%);
  overflow-x: hidden !important;
}

.tools-hero {
  position: relative;
  width: var(--safe);
  margin: 0 auto;
  padding: 104px 0 34px;
  color: var(--ink);
}

.tools-hero-copy {
  position: relative;
  z-index: 0;
  width: min(920px, 100%);
  padding-top: 0;
  animation: heroRise .9s cubic-bezier(.2, .8, .2, 1) both;
}

.tools-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.16;
  letter-spacing: -.012em;
}

.tools-hero p:not(.eyebrow) {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.72;
  letter-spacing: 0;
}

.tool-library {
  width: var(--safe);
  margin: 0 auto 46px;
  scroll-margin-top: 126px;
}

.tool-library.is-active {
  width: min(1220px, calc(100vw - 44px));
  margin-bottom: 10px;
}

.tool-library.is-active .center-copy,
.tool-library.is-active .tool-card-grid {
  display: none;
}

.tool-library.is-active .tool-strip {
  width: 100%;
  padding: 6px;
  box-shadow: 0 14px 44px rgba(0,0,0,.07), inset 0 1px 0 rgba(255,255,255,.84);
}

.tool-card-grid {
  display: flex;
  align-items: stretch;
  gap: 16px;
  margin: 30px auto 20px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.tool-card-grid::-webkit-scrollbar {
  display: none;
}

.tool-library-card {
  flex: 0 0 222px;
  min-height: 184px;
  display: grid;
  align-content: space-between;
  gap: 16px;
  padding: 20px;
  border: 1px solid rgba(29, 29, 31, .045);
  border-radius: 24px;
  background: rgba(255, 255, 255, .92);
  box-shadow:
    0 1px 1px rgba(29, 29, 31, .018);
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background .22s ease;
}

.tool-library-card:hover {
  background: rgba(255, 255, 255, .96);
  border-color: rgba(0, 113, 227, .14);
  transform: translateY(-2px);
  box-shadow:
    0 1px 2px rgba(29, 29, 31, .028),
    0 4px 10px rgba(29, 29, 31, .028);
}

.tool-library-card span,
.tool-library-card em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}

.tool-library-card strong {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.16;
  letter-spacing: -.035em;
}

.tool-library-card em {
  color: var(--blue);
}

.tool-strip {
  position: sticky;
  top: 64px;
  z-index: 18;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,.62);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.50)),
    rgba(255,255,255,.44);
  box-shadow: 0 18px 56px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.84);
  backdrop-filter: blur(28px) saturate(155%);
  -webkit-backdrop-filter: blur(28px) saturate(155%);
}

.tool-strip.is-visible {
  display: flex;
}

.tool-poster {
  position: relative;
  width: var(--safe);
  min-height: 430px;
  margin: 24px auto 46px;
  overflow: hidden;
  border-radius: 34px;
  background: #f5f5f7;
  box-shadow: 0 28px 100px rgba(0,0,0,.08);
}

.tool-poster[hidden] {
  display: none !important;
}

.tool-poster img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tool-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,.96) 0%, rgba(255,255,255,.84) 36%, rgba(255,255,255,.16) 68%, rgba(255,255,255,.02) 100%);
}

.tool-poster-copy {
  position: relative;
  z-index: 1;
  max-width: 520px;
  padding: 54px 58px;
}

.tool-poster-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 5.2vw, 64px);
  line-height: 1.16;
  letter-spacing: -.012em;
}

.tool-poster-copy p:not(.eyebrow) {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.72;
  letter-spacing: 0;
}

.tool-section[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.embedded-page-section {
  width: 100%;
  margin-left: 0;
  padding-top: 8px;
}

.embedded-page-frame {
  width: 100%;
  max-width: 100%;
  min-height: 900px;
  height: auto;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.embedded-page-frame iframe {
  display: block;
  width: 100%;
  min-height: 900px;
  border: 0;
  background: transparent;
}

.tool-strip a {
  min-width: 0;
  max-width: min(210px, 26vw);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  border-radius: 999px;
  padding: 0 13px;
  color: #1d1d1f;
  font-size: 12px;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}

.tool-strip a:hover {
  background: rgba(255,255,255,.70);
  color: var(--blue);
}

.tool-strip span {
  flex: 0 0 auto;
  color: #86868b;
  font-size: 11px;
  font-weight: 800;
}

.tool-strip strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 800;
}

.tool-section {
  width: var(--safe);
  margin: 0 auto;
  padding: 28px 0;
  border-bottom: 0;
  scroll-margin-top: 156px;
}

.tool-section.embedded-page-section {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  padding-top: 8px;
}

.tool-section.split {
  display: grid;
  grid-template-columns: minmax(260px, .78fr) minmax(420px, 1.22fr);
  gap: 22px;
  align-items: start;
  margin-top: 0;
  margin-bottom: 22px;
  padding: 22px;
  border: 1px solid rgba(255,255,255,.66);
  border-radius: 30px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.80), rgba(255,255,255,.56)),
    rgba(255,255,255,.46);
  box-shadow: 0 16px 54px rgba(0,0,0,.055), inset 0 1px 0 rgba(255,255,255,.88);
  backdrop-filter: blur(24px) saturate(145%);
  -webkit-backdrop-filter: blur(24px) saturate(145%);
}

.external-tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.66);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.56)),
    rgba(255,255,255,.46);
  box-shadow: 0 24px 80px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.88);
  backdrop-filter: blur(30px) saturate(155%);
  -webkit-backdrop-filter: blur(30px) saturate(155%);
}

.external-tool-card {
  display: grid;
  gap: 46px;
  min-height: 190px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.68);
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.66)),
    rgba(255,255,255,.52);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.92);
  transition: transform .2s ease, box-shadow .2s ease;
}

.external-tool-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 54px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.92);
}

.external-tool-card span {
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.035em;
}

.external-tool-card strong {
  color: var(--blue);
  font-size: 15px;
}

.tool-copy {
  position: sticky;
  top: 128px;
  padding: 8px 0 0;
}

.tool-copy h2,
.center-copy h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.16;
  letter-spacing: -.012em;
}

.tool-copy p:not(.eyebrow),
.center-copy p:not(.eyebrow) {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.55vw, 20px);
  line-height: 1.72;
  letter-spacing: 0;
}

.center-copy {
  max-width: 780px;
  margin: 0 auto 22px;
  text-align: center;
}

.center-copy p:not(.eyebrow) {
  margin-left: auto;
  margin-right: auto;
}

.tool-surface,
.material-rail article {
  border: 1px solid rgba(255,255,255,.68);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.86), rgba(255,255,255,.66)),
    rgba(255,255,255,.52);
  box-shadow: 0 12px 38px rgba(0,0,0,.045), inset 0 1px 0 rgba(255,255,255,.92);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}

.tool-surface {
  padding: 18px;
}

.check-grid,
.calc-grid,
.draft-grid {
  display: grid;
  gap: 10px;
}

.calc-grid,
.draft-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.check-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 15px 16px;
  border: 1px solid rgba(255,255,255,.62);
  border-radius: 18px;
  background: rgba(255,255,255,.42);
  cursor: pointer;
  transition: transform .18s ease, background .18s ease;
}

.check-item:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,.62);
}

.check-item input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  accent-color: #0071e3;
}

.check-item strong,
.check-item small {
  display: block;
}

.check-item strong {
  color: #1d1d1f;
  font-size: 15px;
}

.check-item small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.score-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.score-row div {
  padding: 14px 15px;
  border-radius: 18px;
  background: rgba(255,255,255,.48);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.70);
}

.score-row strong,
.score-row span {
  display: block;
}

.score-row strong {
  color: #0071e3;
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: -.04em;
}

.score-row span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.material-rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.66);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.56)),
    rgba(255,255,255,.46);
  box-shadow: 0 24px 80px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.88);
  backdrop-filter: blur(30px) saturate(155%);
  -webkit-backdrop-filter: blur(30px) saturate(155%);
}

.material-rail article {
  min-height: 240px;
  padding: 22px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.90);
}

.material-rail span {
  color: #86868b;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.material-rail strong {
  display: block;
  margin-top: 54px;
  color: #1d1d1f;
  font-size: 22px;
  line-height: 1.12;
  letter-spacing: -.035em;
}

.material-rail p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.quiet-button {
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  padding: 0 22px;
  background: rgba(255,255,255,.56);
  color: #0071e3;
  font-weight: 800;
  cursor: pointer;
}

.profit-section .score-row,
.draft-section .form-actions {
  margin-top: 18px;
}

.tools-page .footer {
  background: transparent;
}

@media (max-width: 900px) {
  .tools-hero {
    min-height: auto;
    padding: 100px 0 38px;
  }

  .tools-hero-copy {
    padding: 0;
  }

  .tool-strip {
    position: static;
    justify-content: flex-start;
    width: 100%;
    max-width: calc(100vw - 24px);
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: 999px;
    margin-top: 18px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tool-strip::-webkit-scrollbar {
    display: none;
  }

  .tool-strip a {
    flex: 0 0 auto;
    max-width: min(230px, 64vw);
  }

  .tool-section,
  .tool-section.split {
    grid-template-columns: 1fr;
    padding: 64px 0;
  }

  .tool-copy {
    position: static;
  }

  .material-rail,
  .calc-grid,
  .draft-grid,
  .score-row {
    grid-template-columns: 1fr;
  }

  .material-rail article {
    min-height: 220px;
  }

  .material-rail strong {
    margin-top: 42px;
  }
}