:root {
  --ink: #172027;
  --muted: #61717c;
  --line: #dfe7e5;
  --paper: #f6f9f8;
  --white: #fff;
  --teal: #08766f;
  --blue: #315c9a;
  --red: #c94f37;
  --gold: #aa7a20;
  --green: #6d8c31;
  --shadow: 0 18px 52px rgba(25, 39, 47, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 70px;
  padding: 0 5vw;
  background: rgba(246, 249, 248, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 128px;
}

.brand img {
  display: block;
  width: clamp(128px, 13vw, 178px);
  height: auto;
  max-height: 42px;
  object-fit: contain;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

nav a:hover,
.footer a:hover,
.news-card a:hover {
  color: var(--teal);
}

.hero {
  position: relative;
  min-height: 650px;
  display: grid;
  align-items: center;
  padding: 92px 5vw 120px;
  overflow: hidden;
  background: #111b20;
}

.hero img,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero img {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(13, 24, 27, 0.92), rgba(13, 24, 27, 0.56) 48%, rgba(13, 24, 27, 0.12)),
    linear-gradient(0deg, rgba(13, 24, 27, 0.55), rgba(13, 24, 27, 0));
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(790px, 100%);
  color: var(--white);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #99e5d8;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(56px, 9vw, 118px);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.14;
  letter-spacing: 0;
}

.hero-content p:not(.eyebrow) {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: var(--white);
  background: var(--teal);
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.12);
}

.section {
  padding: 74px 5vw;
}

.section-head,
.news-list,
.video-grid {
  width: min(1180px, 100%);
  margin-inline: auto;
}

.section-head {
  margin-bottom: 28px;
}

.section-head.row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.youtube-section {
  background: #eef5f2;
  border-block: 1px solid var(--line);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-grid div,
.news-card,
.video-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 26px rgba(25, 39, 47, 0.06);
}

.stat-grid div {
  min-height: 124px;
  padding: 22px;
}

.stat-grid strong {
  display: block;
  font-size: 38px;
  line-height: 1;
}

.stat-grid span {
  color: var(--muted);
}

.select-label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

select {
  min-width: 210px;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}

.news-list {
  display: grid;
  gap: 14px;
}

.news-card {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 18px;
  padding: 22px;
}

.news-index {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 8px;
  color: var(--white);
  background: var(--ink);
  font-weight: 900;
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.news-meta span,
.news-meta strong,
.advice span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 0 10px;
  color: var(--muted);
  background: #eef4f3;
  font-size: 12px;
  font-weight: 850;
}

.news-meta strong {
  color: var(--red);
  background: rgba(201, 79, 55, 0.11);
}

.news-card h2 {
  margin-bottom: 10px;
  font-size: clamp(21px, 2.3vw, 30px);
}

.summary {
  color: var(--muted);
}

.original-title {
  margin: -2px 0 12px;
  color: var(--muted);
  font-size: 14px;
}

.advice {
  margin: 16px 0;
  padding: 16px;
  border-left: 4px solid var(--teal);
  background: #f3f8f7;
}

.advice p {
  margin: 8px 0 0;
}

.news-card a {
  color: var(--teal);
  font-weight: 850;
}

.video-grid {
  width: min(1180px, 100%);
  margin-inline: auto;
}

.video-meta span {
  color: var(--muted);
  font-size: 13px;
}

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

.video-card {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  padding: 22px;
}

.video-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
}

.video-top span,
.video-top strong,
.video-summary span {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 850;
}

.video-top span {
  color: var(--blue);
  background: rgba(49, 92, 154, 0.11);
}

.video-top strong {
  color: var(--red);
  background: rgba(201, 79, 55, 0.11);
}

.video-card h3 {
  margin-bottom: 12px;
  font-size: 21px;
  line-height: 1.25;
}

.video-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 16px;
}

.video-reason {
  color: var(--muted);
}

.video-summary {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.video-summary span {
  color: var(--green);
  background: rgba(109, 140, 49, 0.12);
}

.video-summary p {
  margin: 8px 0 0;
}

.video-advice {
  margin-bottom: 14px;
}

.video-card a {
  color: var(--teal);
  font-weight: 850;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 34px 5vw;
  color: rgba(255, 255, 255, 0.72);
  background: #152129;
}

.footer strong,
.footer a {
  color: var(--white);
}

@media (max-width: 900px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 14px;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 3px;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: 680px;
    padding-top: 80px;
  }

  .stat-grid,
  .news-card {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: 56px;
  }

  .section-head.row {
    align-items: flex-start;
    flex-direction: column;
  }

  .control-row {
    width: 100%;
  }

  .control-row .select-label {
    width: 100%;
  }

  select {
    width: 100%;
    min-width: 0;
  }

  .news-index {
    width: 50px;
    height: 50px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}