:root {
  color-scheme: light;
  --navy-950: #071128;
  --navy-900: #0b1838;
  --navy-800: #14234c;
  --navy-700: #203468;
  --ink: #172039;
  --muted: #69738b;
  --line: #dce2ec;
  --surface: #f4f7fb;
  --white: #ffffff;
  --gold: #f6b941;
  --gold-deep: #e7a726;
  --teal: #1c9baa;
  --shadow: 0 18px 60px rgba(7, 17, 40, 0.16);
  --radius-lg: 28px;
  --radius-md: 18px;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 100;
  padding: 10px 16px;
  color: var(--white);
  background: var(--navy-900);
  border-radius: 8px;
}

.skip-link:focus { top: 12px; }

.shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(20px, calc((100vw - 1180px) / 2));
  color: var(--white);
  background: rgba(7, 17, 40, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand-home {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: var(--navy-900);
  background: var(--gold);
  font-weight: 900;
  font-size: 19px;
}

.brand-name { display: grid; line-height: 1.15; }
.brand-name strong { font-size: 15px; letter-spacing: 0.06em; }
.brand-name small { margin-top: 3px; color: rgba(255,255,255,.68); font-size: 11px; letter-spacing: .08em; }

.anchor-nav { display: flex; align-items: center; gap: 6px; }
.anchor-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  color: rgba(255,255,255,.8);
  font-size: 14px;
  text-decoration: none;
}
.anchor-nav a:hover,
.anchor-nav a:focus-visible { color: var(--white); background: rgba(255,255,255,.1); }

.hero {
  position: relative;
  min-height: 760px;
  display: grid;
  align-items: center;
  padding: 126px 0 72px;
  color: var(--white);
  background: var(--navy-950) url("assets/port-hero.webp") center / cover no-repeat;
  overflow: hidden;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7,17,40,.94) 0%, rgba(7,17,40,.72) 48%, rgba(7,17,40,.32) 100%),
    linear-gradient(0deg, rgba(7,17,40,.78), transparent 52%);
}

.hero-content { position: relative; z-index: 1; }
.eyebrow,
.section-index,
.role,
.brand-en {
  margin: 0;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow { margin-bottom: 22px; color: rgba(255,255,255,.78); }

.hero-panel {
  width: min(720px, 100%);
  padding: clamp(28px, 5vw, 58px);
  color: var(--navy-950);
  background: rgba(246, 185, 65, .96);
  border-radius: 8px 48px 48px 48px;
  box-shadow: var(--shadow);
}
.brand-en { color: var(--navy-700); }
.hero h1 {
  margin: 8px 0 0;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1;
  letter-spacing: -.06em;
}
.hero-kicker { margin: 12px 0 32px; font-size: clamp(19px, 3vw, 29px); font-weight: 800; }
.hero-statement { margin: 0; font-size: clamp(25px, 4vw, 42px); line-height: 1.35; font-weight: 900; letter-spacing: -.03em; }

.quick-links {
  width: min(820px, 100%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}
.quick-links a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 14px;
  color: var(--white);
  background: rgba(7,17,40,.62);
  backdrop-filter: blur(12px);
  text-decoration: none;
  font-weight: 700;
}
.quick-links a:hover,
.quick-links a:focus-visible { border-color: var(--gold); background: rgba(11,24,56,.92); }
.quick-links span { color: var(--gold); font-size: 12px; letter-spacing: .12em; }

.section { padding: clamp(76px, 10vw, 128px) 0; }
.section-heading { width: min(780px, 100%); margin-bottom: 48px; }
.team-section .section-heading,
.demo-section .section-heading { width: 100%; }
.section-index { margin-bottom: 10px; color: var(--gold-deep); }
.section h2 {
  margin: 0 0 18px;
  color: var(--navy-900);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.18;
  letter-spacing: -.045em;
}
.section-heading > p:last-child,
.plan-copy > p { color: #556078; font-size: 18px; }

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 0 64px;
  border-block: 1px solid var(--line);
}
.proof-grid div { padding: 26px 24px; border-right: 1px solid var(--line); }
.proof-grid div:first-child { padding-left: 0; }
.proof-grid div:last-child { border-right: 0; }
.proof-grid strong { display: block; color: var(--navy-900); font-size: 32px; line-height: 1.2; }
.proof-grid span { display: block; margin-top: 6px; color: var(--muted); font-size: 14px; }

.leader-card {
  display: grid;
  grid-template-columns: minmax(320px, .9fr) 1.1fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
  padding: clamp(22px, 4vw, 42px);
  background: var(--surface);
  border-radius: var(--radius-lg);
}
.leader-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-md);
}
.role { color: var(--gold-deep); }
.leader-card h3,
.member-card h3,
.video-placeholder h3 {
  margin: 4px 0 14px;
  color: var(--navy-900);
  font-size: 28px;
  line-height: 1.25;
}
.clean-list { margin: 20px 0 0; padding: 0; list-style: none; }
.clean-list li { position: relative; padding-left: 20px; margin-top: 6px; color: #4e5870; }
.clean-list li::before { content: ""; position: absolute; left: 0; top: .75em; width: 8px; height: 2px; background: var(--gold-deep); }

.member-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.member-card {
  display: grid;
  grid-template-columns: 144px 1fr;
  gap: 24px;
  align-items: center;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.member-card img { width: 144px; aspect-ratio: 1 / 1.13; object-fit: cover; object-position: top; border-radius: 14px; background: #eef1f6; }
.member-card p:last-child { margin-bottom: 0; color: #586177; }

.full-story { margin-top: 28px; border: 1px solid var(--line); border-radius: var(--radius-md); overflow: clip; }
.full-story summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  color: var(--navy-900);
  background: var(--white);
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}
.full-story summary::-webkit-details-marker { display: none; }
.full-story summary:hover { background: var(--surface); }
.summary-icon { font-size: 25px; transition: transform .2s ease; }
.full-story[open] .summary-icon { transform: rotate(45deg); }
.story-body { padding: 8px clamp(24px, 5vw, 64px) 52px; background: var(--surface); }
.story-body h3 { margin: 40px 0 10px; color: var(--navy-900); font-size: 23px; }
.story-body p { max-width: 860px; color: #4e5870; }

.plan-section { color: var(--white); background: var(--navy-900); }
.plan-layout { display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(40px, 8vw, 92px); align-items: center; }
.plan-section h2 { color: var(--white); }
.plan-copy > p { color: rgba(255,255,255,.72); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 800;
}
.button-primary { color: var(--navy-900); background: var(--gold); }
.button-primary:hover { background: #ffc95f; }
.button-secondary { color: var(--white); border-color: rgba(255,255,255,.3); }
.button-secondary:hover { background: rgba(255,255,255,.08); }
.plan-cover {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-lg);
  box-shadow: 0 28px 70px rgba(0,0,0,.28);
}
.plan-cover img { width: 100%; height: auto; object-fit: contain; object-position: left center; transition: transform .35s ease; }
.plan-cover:hover img { transform: scale(1.025); }
.plan-cover span { position: absolute; right: 16px; bottom: 16px; padding: 8px 12px; border-radius: 999px; color: var(--navy-900); background: var(--gold); font-size: 13px; font-weight: 800; }

.demo-section { background: #eef3f8; }
.demo-heading { margin-bottom: 36px; }
.video-frame {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--navy-950);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.video-frame iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; }
.video-grid {
  position: absolute;
  inset: 0;
  opacity: .34;
  background-image:
    linear-gradient(rgba(246,185,65,.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246,185,65,.15) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}
.video-frame::before,
.video-frame::after {
  content: "";
  position: absolute;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(246,185,65,.2);
  border-radius: 50%;
}
.video-frame::before { left: -120px; bottom: -130px; }
.video-frame::after { right: -100px; top: -140px; }
.video-placeholder { position: relative; z-index: 1; width: min(560px, calc(100% - 40px)); text-align: center; }
.play-symbol { width: 72px; height: 72px; display: grid; place-items: center; margin: 0 auto 22px; padding-left: 5px; border-radius: 50%; color: var(--navy-950); background: var(--gold); font-size: 23px; }
.video-status { margin: 0; color: var(--gold); font-size: 14px; font-weight: 800; letter-spacing: .14em; }
.video-placeholder h3 { margin: 6px 0 0; color: var(--white); font-size: clamp(36px, 6vw, 64px); }

.decision-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; }
.decision-flow li { padding: 18px 14px; color: var(--navy-900); background: var(--white); border-radius: 12px; font-weight: 800; font-size: 14px; text-align: center; }
.decision-flow span { display: block; margin-bottom: 4px; color: var(--gold-deep); font-size: 11px; letter-spacing: .1em; }

.site-footer { padding: 34px 0; color: rgba(255,255,255,.72); background: var(--navy-950); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.footer-inner div { display: grid; }
.footer-inner strong { color: var(--white); }
.footer-inner span { font-size: 13px; }
.footer-inner a { color: var(--gold); text-decoration: none; font-weight: 700; }

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

@media (max-width: 860px) {
  .hero { min-height: 720px; }
  .leader-card,
  .plan-layout { grid-template-columns: 1fr; }
  .member-grid { grid-template-columns: 1fr; }
  .leader-card img { max-height: 420px; }
  .plan-cover { max-width: 640px; }
  .video-frame { min-height: 430px; }
}

@media (min-width: 861px) {
  .team-section .section-heading h2,
  .demo-section .section-heading h2 { white-space: nowrap; }
}

@media (max-width: 620px) {
  html { scroll-padding-top: 68px; }
  body { font-size: 16px; }
  .shell { width: min(100% - 28px, 1180px); }
  .site-header { height: 64px; padding-inline: 14px; }
  .brand-name small { display: none; }
  .anchor-nav { gap: 0; }
  .anchor-nav a { padding: 7px 8px; font-size: 13px; }
  .hero { min-height: 690px; padding: 100px 0 42px; background-position: 61% center; }
  .hero-shade { background: linear-gradient(90deg, rgba(7,17,40,.94), rgba(7,17,40,.58)); }
  .hero-panel { padding: 30px 24px 34px; border-radius: 6px 32px 32px 32px; }
  .hero h1 { font-size: clamp(48px, 17vw, 68px); }
  .hero-kicker { margin-bottom: 24px; }
  .quick-links { grid-template-columns: 1fr; gap: 8px; }
  .quick-links a { min-height: 48px; }
  .section { padding: 74px 0; }
  .section-heading { margin-bottom: 34px; }
  .section-heading > p:last-child,
  .plan-copy > p { font-size: 16px; }
  .proof-grid { grid-template-columns: 1fr; margin-bottom: 38px; }
  .proof-grid div,
  .proof-grid div:first-child { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .proof-grid div:last-child { border-bottom: 0; }
  .leader-card { padding: 16px; }
  .leader-card > div { padding: 4px 8px 14px; }
  .member-card { grid-template-columns: 94px 1fr; gap: 16px; padding: 16px; align-items: start; }
  .member-card img { width: 94px; }
  .member-card h3 { font-size: 22px; }
  .member-card p:last-child { font-size: 14px; }
  .story-body { padding-bottom: 34px; }
  .button-row { display: grid; grid-template-columns: 1fr 1fr; }
  .video-frame { min-height: 360px; border-radius: 20px; }
  .decision-flow { grid-template-columns: 1fr 1fr; }
  .decision-flow li:last-child { grid-column: 1 / -1; }
  .footer-inner { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}