:root {
  --ink: #151a20;
  --muted: #637083;
  --line: #d8dee6;
  --paper: #f6f8fa;
  --panel: #ffffff;
  --nav: #0d1520;
  --navy: #173a5e;
  --header-bg: #f7f8fa;
  --footer-blue: #173a5e;
  --gold: #b89052;
  --gold-dark: #8c6838;
  --blue: #24364b;
  --shadow: 0 18px 50px rgba(17, 28, 42, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.68;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 248, 250, .96);
  color: var(--ink);
  border-bottom: 1px solid rgba(36, 54, 75, .12);
  box-shadow: 0 10px 30px rgba(20, 32, 46, .08);
  backdrop-filter: blur(14px);
}
.nav-shell {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}
.brand {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}
.brand-logo {
  width: clamp(240px, 28vw, 346px);
  height: auto;
  max-height: 42px;
  object-fit: contain;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: #2f3b49; font-size: 15px; font-weight: 700; }
.nav-links a.active, .nav-links a:hover { color: var(--blue); }
.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-item > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-item > a::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .72;
}
.nav-submenu {
  position: absolute;
  top: calc(100% + 18px);
  left: 50%;
  min-width: 146px;
  transform: translateX(-50%) translateY(8px);
  padding: 8px;
  background: #fff;
  border: 1px solid rgba(36, 54, 75, .12);
  box-shadow: 0 18px 42px rgba(20, 32, 46, .16);
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.nav-submenu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -18px;
  height: 18px;
}
.nav-submenu a {
  display: block;
  padding: 10px 12px;
  white-space: nowrap;
  color: #2f3b49;
  font-size: 14px;
}
.nav-submenu a:hover,
.nav-submenu a.active {
  background: #f3f6f9;
  color: var(--gold-dark);
}
.nav-item:hover .nav-submenu,
.nav-item:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-links .login-link {
  padding: 9px 16px;
  background: var(--gold);
  color: #111923;
  font-weight: 700;
}
.menu-toggle {
  display: none;
  border: 1px solid rgba(36, 54, 75, .25);
  background: transparent;
  color: var(--blue);
  padding: 8px 10px;
}

.hero {
  min-height: 670px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(9, 15, 23, .88), rgba(9, 15, 23, .42), rgba(9, 15, 23, .2)),
    url("../img/qogir-hero-optimized.jpg") center / cover no-repeat;
  display: flex;
  align-items: flex-end;
}
.home-hero {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  align-items: stretch;
  background:
    radial-gradient(circle at 74% 26%, rgba(184, 144, 82, .28), transparent 26%),
    linear-gradient(90deg, rgba(7, 13, 22, .94) 0%, rgba(10, 20, 34, .76) 42%, rgba(10, 20, 34, .28) 100%),
    linear-gradient(180deg, rgba(8, 13, 20, .22), rgba(8, 13, 20, .74)),
    url("../img/qogir-hero-optimized.jpg") center / cover no-repeat;
}
.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(255, 255, 255, .06) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, transparent, rgba(4, 10, 18, .32));
  background-size: 120px 120px, auto;
  pointer-events: none;
}
.home-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 190px;
  background: linear-gradient(180deg, transparent, rgba(246, 248, 250, .98));
  pointer-events: none;
}
.hero-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 92px;
}
.home-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 64px;
  align-items: end;
  padding: 160px 0 170px;
}
.hero-copy {
  max-width: 760px;
}
.eyebrow {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 14px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(48px, 7vw, 92px);
  line-height: 1.04;
  font-weight: 700;
}
.home-hero h1 {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  font-size: clamp(58px, 8vw, 108px);
  font-weight: 800;
  letter-spacing: 0;
  text-shadow: 0 24px 60px rgba(0, 0, 0, .34);
}
.hero p {
  max-width: 620px;
  margin: 22px 0 30px;
  font-size: 22px;
  color: #e5ebf2;
}
.home-hero .hero-copy > p:not(.eyebrow) {
  max-width: 680px;
  font-size: clamp(20px, 2vw, 26px);
  color: #eef3f8;
}
.hero-button {
  min-width: 138px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, .26);
}
.hero-philosophy {
  position: relative;
  padding: 30px 30px 32px;
  border: 1px solid rgba(232, 238, 246, .24);
  border-top: 3px solid var(--gold);
  background: rgba(13, 24, 38, .58);
  box-shadow: 0 28px 70px rgba(0, 0, 0, .28);
  backdrop-filter: blur(12px);
}
.hero-philosophy span {
  display: block;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}
.hero-philosophy strong {
  display: block;
  color: #fff;
  font-size: 24px;
  line-height: 1.45;
}
.hero-philosophy p {
  margin: 16px 0 0;
  color: #d8e1ec;
  font-size: 15px;
  line-height: 1.9;
}
.hero-trust-strip {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 38px;
  width: min(1180px, calc(100% - 48px));
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(248, 250, 252, .92);
  box-shadow: 0 24px 70px rgba(15, 28, 42, .18);
  backdrop-filter: blur(10px);
}
.hero-trust-strip div {
  padding: 22px 28px;
  border-right: 1px solid rgba(36, 54, 75, .13);
}
.hero-trust-strip div:last-child { border-right: 0; }
.hero-trust-strip strong {
  display: block;
  color: var(--navy);
  font-size: 18px;
  font-weight: 800;
}
.hero-trust-strip span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 14px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  background: var(--gold);
  color: #111923;
  font-weight: 700;
  border: 0;
  cursor: pointer;
}
.button.ghost {
  background: transparent;
  color: var(--gold-dark);
  border: 1px solid var(--gold);
}

.section { padding: 84px 24px; }
.section.white { background: #fff; }
.home-value-section {
  position: relative;
  padding-top: 104px;
  background:
    linear-gradient(180deg, #f6f8fa 0%, #ffffff 34%, #ffffff 100%);
}
.home-value-section::before {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(184, 144, 82, .45), transparent);
}
.home-news-section {
  background:
    linear-gradient(180deg, #eef2f6 0%, #f7f9fb 100%);
}
.container { max-width: 1180px; margin: 0 auto; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}
.section-head h2, .page-title h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.18;
}
.home-value-section .section-head h2,
.home-news-section .section-head h2 {
  color: var(--navy);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  font-weight: 800;
}
.section-head p, .page-title p, .lead { color: var(--muted); max-width: 760px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 34px; align-items: start; }
.value-card, .news-card, .contact-card, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.value-grid { gap: 26px; }
.value-card {
  position: relative;
  min-height: 300px;
  padding: 34px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border: 0;
  background-position: center;
  background-size: cover;
  box-shadow: 0 24px 54px rgba(23, 45, 68, .16);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.value-card::before {
  content: "";
  position: absolute;
  inset: 0;
  height: auto;
  background:
    linear-gradient(180deg, rgba(8, 16, 28, .08) 0%, rgba(8, 16, 28, .46) 46%, rgba(8, 16, 28, .86) 100%),
    linear-gradient(90deg, rgba(8, 16, 28, .34), transparent 58%);
}
.value-card::after {
  content: "";
  position: absolute;
  left: 34px;
  bottom: 118px;
  width: 52px;
  height: 3px;
  background: var(--gold);
  transform: none;
}
.value-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 64px rgba(23, 45, 68, .22);
}
.value-card-longterm { background-image: url("../img/value-longterm-card.jpg"); }
.value-card-discipline { background-image: url("../img/value-discipline-card.jpg"); }
.value-card-compliance { background-image: url("../img/value-compliance-card.jpg"); }
.value-card > * {
  position: relative;
  z-index: 1;
}
.value-card h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  text-shadow: 0 12px 30px rgba(0, 0, 0, .26);
}
.value-card p {
  color: #dce5ee;
  line-height: 1.8;
  max-width: 92%;
}
.value-card h3, .news-card h3, .panel h3 { margin: 0 0 12px; line-height: 1.35; }
.news-card p, .panel p { color: var(--muted); margin: 0; }
.value-card p { margin: 0; }

.home-news-section .section-head {
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(36, 54, 75, .12);
}
.news-card {
  padding: 28px;
  border-color: #dbe3eb;
  box-shadow: 0 18px 42px rgba(23, 45, 68, .07);
}
.home-news-section .news-card {
  background: rgba(255, 255, 255, .9);
}
.news-card .meta { color: var(--gold-dark); font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.news-card .news-title-link { display: inline; margin-top: 0; color: inherit; font-weight: inherit; }
.news-card .news-title-link:hover { color: var(--gold-dark); }
.news-card a { display: inline-block; margin-top: 18px; color: var(--gold-dark); font-weight: 700; }

.page-hero {
  background: linear-gradient(135deg, var(--nav), var(--blue));
  color: #fff;
  padding: 90px 24px 70px;
}
.page-title { max-width: 1180px; margin: 0 auto; }
.page-title p { color: #cbd5df; }
.content-block {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 56px 0;
}
.about-section-card {
  max-width: 1040px;
  margin: 0 auto;
  padding: 44px 50px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.about-section-card h2 {
  margin: 0 0 22px;
  font-size: 24px;
  color: var(--ink);
  text-align: center;
}
.about-section-card h3 {
  margin: 30px 0 14px;
  font-size: 22px;
  color: var(--ink);
}
.about-section-card p {
  margin: 0 0 18px;
  color: #465466;
  font-size: 17px;
  line-height: 1.9;
  text-align: justify;
  text-indent: 2em;
}
.about-org-chart {
  display: flex;
  justify-content: center;
  margin: 8px 0 30px;
}
.about-org-chart img {
  max-width: min(100%, 620px);
  height: auto;
}
.split-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 42px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}
.split-card h2 { margin: 0; color: var(--blue); }
.split-card p { margin-top: 0; color: #3e4855; }
.timeline, .honor-list { padding-left: 18px; color: #3e4855; }
.timeline li, .honor-list li { margin-bottom: 12px; }

.process {
  counter-reset: step;
  display: grid;
  gap: 14px;
}
.process li {
  list-style: none;
  background: #fff;
  border: 1px solid var(--line);
  padding: 18px 20px 18px 62px;
  position: relative;
}
.process li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: #111923;
  font-weight: 800;
}

.form {
  display: grid;
  gap: 16px;
}
.form label { display: grid; gap: 7px; color: #324052; font-weight: 700; }
.form input, .form textarea, .form select {
  width: 100%;
  border: 1px solid var(--line);
  padding: 13px 14px;
  font: inherit;
  background: #fff;
}
.input-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.message { min-height: 26px; color: var(--gold-dark); }

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.data-table th, .data-table td {
  border-bottom: 1px solid var(--line);
  padding: 15px 14px;
  text-align: left;
}
.data-table th { background: #edf1f5; color: #28384a; }

.login-dev-note {
  margin: 22px 0 0;
  padding: 10px 14px;
  border-left: 4px solid var(--gold);
  background: #f7f4ee;
  color: var(--navy);
  font-size: 13px;
  line-height: 1.45;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contact-page-layout {
  display: grid;
  gap: 26px;
}
.contact-info-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  min-height: 260px;
  align-items: center;
  padding: 34px 64px 30px;
  border: 1px solid #d9e0e8;
  border-top: 4px solid var(--gold);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 252, .94)),
    linear-gradient(120deg, #edf2f6 0%, #f7f9fb 55%, #e2ebf3 100%);
  box-shadow: 0 20px 46px rgba(25, 48, 73, .08);
}
.contact-info-title {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 0 0 18px;
  border-right: 0;
  text-align: center;
}
.contact-info-title span {
  color: var(--gold-dark);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0;
}
.contact-info-title strong {
  color: var(--navy);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  font-size: 32px;
  line-height: 1.25;
  font-weight: 800;
  white-space: nowrap;
}
.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  width: 100%;
}
.contact-info-grid div {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 84px;
  align-items: center;
  min-width: 0;
  padding: 18px 0;
  border-top: 1px solid rgba(36, 54, 75, .16);
  text-align: left;
}
.contact-info-grid dt {
  margin: 0;
  color: #172231;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
  white-space: nowrap;
}
.contact-info-grid dd {
  margin: 0;
  color: #354354;
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.55;
  white-space: nowrap;
}
.contact-info-grid a {
  color: #24364b;
  text-decoration: none;
}
.contact-info-grid a:hover {
  color: var(--gold-dark);
}
.contact-content-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 34px;
  align-items: stretch;
}
.contact-message-form {
  min-height: 360px;
  height: 360px;
  box-sizing: border-box;
  gap: 10px;
  padding: 22px !important;
  align-content: start;
}
.contact-message-form h3 { margin-bottom: 4px; }
.contact-message-form label {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  font-size: 14px;
  line-height: 1.35;
}
.contact-message-form input,
.contact-message-form textarea {
  padding: 9px 12px;
  box-sizing: border-box;
}
.contact-message-form textarea {
  height: 72px;
  min-height: 72px;
  resize: vertical;
}
.contact-message-form .button {
  justify-self: end;
  margin-top: 2px;
}
.contact-compliance-panel {
  grid-column: 1 / -1;
}
.contact-card { padding: 30px; }
.contact-list { display: grid; gap: 16px; margin: 0; }
.contact-list div { display: grid; grid-template-columns: 90px 1fr; gap: 14px; }
.contact-list dt { color: var(--muted); }
.contact-list dd { margin: 0; font-weight: 700; }
.map-box {
  min-height: 360px;
  background: linear-gradient(135deg, #e7edf4, #f8fafc);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  padding: 28px;
}
.amap-map-box {
  position: relative;
  overflow: hidden;
  display: block;
  padding: 0;
  background: #eef3f8;
  min-height: 360px;
  height: 360px;
}
.amap-tiles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #e8edf3;
}
.amap-tiles img {
  position: absolute;
  width: 256px;
  height: 256px;
  user-select: none;
  pointer-events: none;
}
.amap-marker {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  transform: translate(-50%, -100%);
  display: flex;
  align-items: flex-end;
  gap: 10px;
}
.amap-pin {
  width: 22px;
  height: 22px;
  border-radius: 50% 50% 50% 0;
  background: #c29b5a;
  border: 3px solid #fff;
  box-shadow: 0 8px 20px rgba(17, 35, 52, .28);
  transform: rotate(-45deg);
}
.amap-pin::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: #173b60;
}
.amap-marker-label {
  min-width: 220px;
  max-width: 320px;
  padding: 12px 14px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 12px 30px rgba(17, 35, 52, .18);
  text-align: left;
  transform: translateY(-8px);
}
.amap-marker-label strong {
  display: block;
  color: var(--navy);
  font-size: 16px;
  line-height: 1.3;
}
.amap-marker-label small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}
.amap-open-link {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 3;
  padding: 9px 14px;
  border-radius: 4px;
  background: rgba(23, 59, 96, .92);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 10px 24px rgba(17, 35, 52, .18);
}
.amap-open-link:hover { color: #fff; background: #173b60; }

.site-footer {
  background: var(--footer-blue);
  color: #e8eef6;
  padding: 42px 24px;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 30px;
}
.footer-inner strong { color: #fff; }
.footer-inner p { margin: 8px 0 0; color: #c7d4e3; }

@media (max-width: 1100px) {
  .home-hero-inner {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-bottom: 210px;
  }
  .hero-philosophy {
    max-width: 620px;
  }
  .contact-info-band {
    padding-left: 42px;
    padding-right: 42px;
  }
  .contact-info-grid div {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 42px;
  }
}

@media (max-width: 860px) {
  .home-hero {
    min-height: auto;
  }
  .home-hero-inner {
    width: min(100% - 36px, 1180px);
    padding: 104px 0 300px;
  }
  .home-hero h1 {
    font-size: clamp(48px, 16vw, 72px);
  }
  .home-hero .hero-copy > p:not(.eyebrow) {
    font-size: 18px;
  }
  .hero-philosophy {
    padding: 24px;
  }
  .hero-philosophy strong {
    font-size: 20px;
  }
  .hero-trust-strip {
    bottom: 24px;
    grid-template-columns: 1fr;
    width: calc(100% - 36px);
  }
  .hero-trust-strip div {
    padding: 16px 20px;
    border-right: 0;
    border-bottom: 1px solid rgba(36, 54, 75, .13);
  }
  .hero-trust-strip div:last-child {
    border-bottom: 0;
  }
  .home-value-section {
    padding-top: 76px;
  }
  .value-card {
    min-height: 0;
  }
  .contact-info-band {
    grid-template-columns: 1fr;
    gap: 16px;
    min-height: 0;
    padding: 28px 20px;
  }
  .contact-info-title {
    padding-bottom: 18px;
  }
  .contact-info-title strong {
    font-size: 24px;
    white-space: normal;
  }
  .contact-info-grid {
    grid-template-columns: 1fr;
  }
  .contact-info-grid div {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 0;
  }
  .contact-info-grid dt { font-size: 17px; }
  .contact-info-grid dd { font-size: 15px; }
  .contact-info-grid dd {
    white-space: normal;
  }
  .contact-content-grid {
    grid-template-columns: 1fr;
  }
  .contact-message-form {
    height: auto;
    min-height: 0;
  }
  .contact-message-form label {
    grid-template-columns: 1fr;
    gap: 5px;
  }
  .contact-message-form .button {
    justify-self: stretch;
  }
  .amap-map-box { min-height: 380px; }
  .amap-marker {
    width: calc(100% - 32px);
    justify-content: center;
  }
  .amap-marker-label {
    min-width: 0;
    max-width: min(320px, calc(100vw - 88px));
  }
  .amap-open-link {
    left: 16px;
    right: auto;
  }
  .menu-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 76px;
    padding: 18px 24px 26px;
    background: var(--header-bg);
    border-bottom: 1px solid rgba(36, 54, 75, .12);
    box-shadow: 0 18px 34px rgba(20, 32, 46, .12);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-item {
    display: grid;
    gap: 10px;
    width: 100%;
  }
  .nav-item > a::after {
    display: none;
  }
  .nav-submenu {
    position: static;
    visibility: visible;
    opacity: 1;
    transform: none;
    min-width: 0;
    width: 100%;
    padding: 6px 0 0 12px;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .nav-submenu::before {
    display: none;
  }
  .nav-submenu a {
    padding: 7px 0;
    font-size: 14px;
  }
  .about-section-card {
    padding: 28px 22px;
  }
  .brand-logo { width: min(260px, 68vw); max-height: 38px; }
  .hero { min-height: 590px; }
  .grid-3, .grid-2, .split-card { grid-template-columns: 1fr; }
  .section-head, .footer-inner { display: block; }
  .input-row { grid-template-columns: 1fr; }
  .data-table { font-size: 14px; }
}