:root {
  color-scheme: dark;
  --bg: #05060a;
  --panel: rgba(11, 16, 28, 0.74);
  --panel-strong: rgba(14, 21, 36, 0.92);
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(216, 176, 92, 0.42);
  --text: #f7f4ec;
  --muted: #aab1bf;
  --gold: #d8b05c;
  --cyan: #47d6ff;
  --blue: #2f69ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 14% 16%, rgba(216, 176, 92, 0.1), transparent 18rem),
    radial-gradient(circle at 86% 8%, rgba(71, 214, 255, 0.1), transparent 20rem),
    radial-gradient(circle, rgba(255, 255, 255, 0.72) 0 0.8px, transparent 1.5px) 0 0 / 130px 130px,
    radial-gradient(circle, rgba(255, 255, 255, 0.32) 0 0.8px, transparent 1.7px) 48px 62px / 220px 220px,
    linear-gradient(180deg, #05060a 0%, #070914 46%, #030407 100%);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  letter-spacing: 0;
}

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

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

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

.site-header {
  position: absolute;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 16px clamp(18px, 4vw, 66px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(2, 4, 12, 0.72), rgba(2, 4, 12, 0));
  backdrop-filter: none;
}

.brand {
  display: inline-flex;
  min-width: 240px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(216, 176, 92, 0.72);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 28%, rgba(216, 176, 92, 0.42), rgba(47, 105, 255, 0.16) 58%, rgba(0, 0, 0, 0.2));
  color: #fff4cf;
  font-weight: 900;
}

.brand strong {
  display: block;
  font-size: 18px;
  line-height: 1.2;
}

.brand small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.main-nav a,
.header-call {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 13px;
  color: rgba(247, 244, 236, 0.84);
  font-size: 14px;
}

.main-nav a:hover,
.header-call:hover {
  border-color: var(--line-strong);
  background: rgba(216, 176, 92, 0.08);
  color: #fff;
}

.header-call {
  border-color: rgba(216, 176, 92, 0.5);
  color: #ffe09a;
  white-space: nowrap;
}

.hero {
  position: relative;
  display: flex;
  min-height: 100svh;
  align-items: flex-end;
  width: 100%;
  margin: 0;
  padding: 150px clamp(18px, 6vw, 92px) 54px;
  overflow: hidden;
  background: #02040a;
}

.hero::after { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(2,4,12,.9) 0%, rgba(2,4,12,.54) 39%, rgba(2,4,12,.08) 72%), linear-gradient(0deg, rgba(2,4,12,.86) 0%, transparent 45%); }
.hero::after { background: linear-gradient(0deg, rgba(0, 0, 0, 0.26), transparent 34%); }
.hero-copy { display: none; }

.eyebrow {
  margin-bottom: 15px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.04;
  text-wrap: balance;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.14;
  text-wrap: balance;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-lede,
.section-heading p,
.scenario-grid p,
.case-feature p,
.advantage-list p,
.process-list p,
.faq-grid p,
.contact-copy p,
.site-footer p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.82;
}

.hero-lede {
  max-width: 680px;
  color: #dfe6f2;
  font-size: clamp(17px, 1.6vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 24px;
  font-weight: 900;
}

.btn-primary {
  background: linear-gradient(135deg, #ffdf8e, var(--gold) 44%, #47d6ff 118%);
  box-shadow: 0 18px 48px rgba(216, 176, 92, 0.26);
  color: #071018;
}

.btn-secondary {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 42px;
}

.proof-strip div,
.scenario-grid article,
.advantage-list article,
.process-list li,
.faq-grid article,
.contact-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.78), rgba(6, 10, 18, 0.7));
  box-shadow: var(--shadow);
}

.proof-strip div {
  border-radius: 16px;
  padding: 20px;
}

.proof-strip strong {
  display: block;
  color: #ffe09a;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
}

.proof-strip span {
  display: block;
  margin-top: 8px;
  color: #d9dfeb;
  font-size: 13px;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: url("media/juxian-hero-fireworks-poster.jpg") center / cover no-repeat;
  box-shadow: none;
  aspect-ratio: auto;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  pointer-events: none;
}

.hero-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  filter: saturate(1.16) contrast(1.08) brightness(1);
}

/* Keep the first viewport continuous: navigation overlays the hero media. */
.premium-home .site-header {
  position: absolute !important;
  inset: 0 0 auto !important;
  background: linear-gradient(180deg, rgba(2, 4, 10, 0.68), rgba(2, 4, 10, 0.08)) !important;
  backdrop-filter: none !important;
}

.hero-intro {
  width: min(1200px, calc(100% - 36px));
  margin: 0 auto;
  padding: 106px 0 88px;
}

.hero-intro > p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.82;
}

.media-caption {
  display: none;
}

.media-caption span,
.case-feature span,
.case-list span,
.process-list span {
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.media-caption strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(20px, 2.4vw, 32px);
}

.section {
  width: min(1200px, calc(100% - 36px));
  margin: 0 auto;
  padding: 96px 0;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 38px;
}

.section-heading.with-action {
  display: flex;
  max-width: none;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
}

.text-link {
  color: var(--cyan);
  font-weight: 900;
  white-space: nowrap;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.scenario-grid article,
.advantage-list article,
.process-list li,
.faq-grid article {
  border-radius: 18px;
  padding: 24px;
}

.scenario-grid span {
  display: inline-flex;
  margin-bottom: 26px;
  color: var(--gold);
  font-weight: 900;
}

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

.case-feature,
.case-list a {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  background: #05060a;
  box-shadow: var(--shadow);
}

.case-feature {
  min-height: 320px;
}

.case-feature div {
  padding: 26px;
}

.case-feature h3 {
  margin: 9px 0 0;
  font-size: 22px;
  line-height: 1.2;
}

.case-feature p {
  display: none;
}

.case-feature picture,
.case-feature img,
.case-feature video,
.case-list picture,
.case-list img,
.case-list video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-feature::after,
.case-list a::after,
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 24%, rgba(3, 4, 7, 0.88) 100%);
}

.case-feature div {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  padding: clamp(24px, 4vw, 44px);
}

.case-feature h3 {
  max-width: 720px;
  margin-top: 10px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.08;
}

.case-list {
  display: contents;
}

.case-list a {
  min-height: 320px;
  padding: 28px;
}

.case-list a span,
.case-list a strong {
  position: relative;
  z-index: 2;
  display: block;
}

.case-list a strong {
  margin-top: 10px;
  font-size: 20px;
}

.advantage {
  display: grid;
  grid-template-columns: minmax(320px, 0.86fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.advantage-text-only {
  grid-template-columns: minmax(0, 1fr);
}

.advantage-text-only .split-copy {
  width: min(100%, 1080px);
}

.split-media {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.split-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.split-media picture {
  display: block;
  width: 100%;
  height: 100%;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 34px;
  border-radius: 28px;
  padding: clamp(24px, 4vw, 48px);
  background:
    radial-gradient(circle at 92% 8%, rgba(216, 176, 92, 0.14), transparent 18rem),
    linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(6, 10, 18, 0.82));
}

.contact-copy dl {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
}

.contact-copy dl div {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
}

.contact-copy dt {
  color: var(--muted);
}

.contact-copy dd {
  margin: 0;
}

.contact-form {
  display: grid;
  gap: 15px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #f7f4ec;
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 14px;
  background: rgba(2, 6, 18, 0.68);
  color: var(--text);
  font: inherit;
  outline: none;
  padding: 15px 16px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(216, 176, 92, 0.12);
}

.contact-form button {
  min-height: 52px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffdf8e, var(--gold), var(--cyan));
  color: #071018;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--cyan);
  font-size: 14px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 42px clamp(18px, 4vw, 64px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 4, 7, 0.94);
}

.site-footer strong {
  display: block;
  margin-bottom: 8px;
}

.footer-meta {
  max-width: 580px;
  text-align: right;
}

.footer-meta p {
  margin-bottom: 6px;
  font-size: 13px;
}

.footer-meta a {
  color: var(--cyan);
  font-size: 13px;
}

@media (hover: hover) {
  .btn,
  .case-feature img,
  .case-list img {
    transition: transform 0.28s ease, box-shadow 0.28s ease;
  }

  .btn:hover {
    transform: translateY(-2px);
  }

  .case-feature:hover img,
  .case-list a:hover img {
    transform: scale(1.035);
  }
}

@media (max-width: 1080px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .hero,
  .advantage,
  .contact-card,
  .case-layout {
    grid-template-columns: 1fr;
  }

  .scenario-grid,
  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-media,
  .case-feature {
    min-height: 430px;
  }
}

@media (max-width: 700px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand {
    min-width: 0;
  }

  .brand strong {
    font-size: 16px;
  }

  .main-nav a,
  .header-call {
    padding: 8px 10px;
    font-size: 13px;
  }

  .hero { width: 100%; min-height: 100svh; padding: 126px 22px 32px; }

  .hero-intro { width: min(100% - 28px, 1200px); padding: 70px 0; }

  .hero-media video {
    display: none;
  }

  .hero-media { background: url("media/juxian-hero-fireworks-poster.jpg") center / cover no-repeat; aspect-ratio: auto; min-height: 0; }

  h1 {
    font-size: clamp(38px, 12vw, 56px);
  }

  h2 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .hero-actions,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .proof-strip,
  .scenario-grid,
  .advantage-list,
  .process-list,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .section {
    width: min(100% - 28px, 1200px);
    padding: 70px 0;
  }

  .section-heading.with-action {
    align-items: flex-start;
    flex-direction: column;
  }

  .case-feature,
  .case-list a,
  .split-media {
    min-height: 320px;
  }

  .contact-copy dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-meta {
    text-align: left;
  }
}

/* Keep all six project cards at the same compact reading scale. */
.case-layout .case-feature div { padding: 26px; }
.case-layout .case-feature h3 { margin: 9px 0 0; font-size: 22px; line-height: 1.2; }
.case-layout .case-feature p { display: none; }