:root {
  --ink: #11181c;
  --ink-2: #253238;
  --muted: #607078;
  --quiet: #87949a;
  --line: #d8e0df;
  --paper: #f4f7f6;
  --white: #ffffff;
  --green: #0a6f64;
  --green-deep: #064e49;
  --green-soft: #e6f1ef;
  --blue: #1d4f73;
  --charcoal: #0f171b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 64px);
  background: rgba(244, 247, 246, 0.94);
  border-bottom: 1px solid rgba(216, 224, 223, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--charcoal);
  font-size: 18px;
  font-weight: 800;
}

.brand span + span {
  padding-left: 10px;
  color: var(--green);
  border-left: 1px solid var(--line);
}

nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

nav a {
  transition: color 0.18s ease;
}

nav a:hover {
  color: var(--green);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.72fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
  padding: clamp(70px, 8vw, 116px) clamp(20px, 4vw, 64px) clamp(52px, 6vw, 88px);
}

.hero-copy {
  max-width: 940px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 940px;
  margin-bottom: 24px;
  color: var(--charcoal);
  font-size: clamp(44px, 6vw, 82px);
  font-weight: 850;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-proof {
  display: grid;
  gap: 8px;
  max-width: 820px;
  margin: 0 0 28px;
  padding: 22px 24px;
  color: var(--white);
  background: var(--charcoal);
  border-left: 5px solid #69cbbf;
  border-radius: 6px;
}

.hero-proof span {
  color: #85d8ce;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.hero-proof strong {
  max-width: 760px;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.2;
}

.hero-proof p {
  margin: 0;
  color: #c4d0d2;
  font-size: 15px;
}

h2 {
  margin-bottom: 0;
  color: var(--charcoal);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 820;
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  color: inherit;
  font-size: 21px;
  font-weight: 780;
  line-height: 1.28;
}

.lead {
  max-width: 820px;
  margin-bottom: 0;
  color: var(--ink-2);
  font-size: clamp(18px, 2vw, 22px);
}

.secondary-lead {
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(17px, 1.8vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--green);
  border-radius: 6px;
  font-weight: 780;
  transition:
    transform 0.18s ease,
    background 0.18s ease,
    color 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

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

.button.secondary {
  color: var(--green);
  background: transparent;
}

.hero-card {
  display: grid;
  gap: 18px;
  padding: 32px;
  color: var(--white);
  background: linear-gradient(180deg, var(--charcoal), #162126);
  border: 1px solid rgba(17, 24, 28, 0.08);
  border-radius: 8px;
}

.hero-card p {
  margin: 0;
  color: #c4d0d2;
  font-size: 15px;
}

.hero-card strong {
  color: var(--white);
  font-size: 28px;
  line-height: 1.28;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.hero-metrics span {
  display: grid;
  align-content: start;
  min-height: 88px;
  padding: 14px 12px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.35;
}

.hero-portrait {
  align-self: stretch;
  display: grid;
  min-height: 560px;
  background: var(--charcoal);
  border: 1px solid rgba(17, 24, 28, 0.08);
  border-radius: 8px;
  overflow: hidden;
}

.hero-portrait img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  object-position: 50% 38%;
  filter: saturate(0.9) contrast(1.02);
}

.portrait-caption {
  padding: 24px;
  color: var(--white);
  background: var(--charcoal);
}

.portrait-caption strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.3;
}

.portrait-caption span {
  color: #c4d0d2;
  font-size: 15px;
}

.proof-strip {
  display: grid;
  grid-template-columns: 0.72fr 0.72fr 1fr 1.28fr;
  gap: 1px;
  padding: 0 clamp(20px, 4vw, 64px) clamp(64px, 7vw, 96px);
}

.proof-strip div {
  min-height: 142px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}

.proof-strip span {
  display: block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 850;
  line-height: 1;
}

.proof-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.practice {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.78fr);
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
  background: #fbfcfc;
}

.practice-copy p {
  max-width: 860px;
  color: var(--ink-2);
  font-size: clamp(17px, 1.9vw, 21px);
}

.practice-copy h2 {
  max-width: 960px;
  margin-bottom: 24px;
}

.proof-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.proof-cards article {
  min-height: 152px;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.proof-cards strong {
  display: block;
  margin-bottom: 14px;
  color: var(--green);
  font-size: 18px;
  line-height: 1.24;
}

.proof-cards span {
  color: var(--muted);
  font-size: 14px;
}

.award-photo {
  margin: 0;
  overflow: hidden;
  background: var(--charcoal);
  border: 1px solid rgba(17, 24, 28, 0.08);
  border-radius: 8px;
  box-shadow: 0 28px 60px rgba(15, 23, 27, 0.12);
}

.award-photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 40%;
}

.award-photo figcaption {
  padding: 20px 22px;
  color: #d5e0df;
  font-size: 14px;
}

.english-identity {
  padding-top: clamp(42px, 5vw, 70px);
  padding-bottom: clamp(42px, 5vw, 70px);
  background: var(--paper);
}

.english-identity h2 {
  max-width: 900px;
  margin-bottom: 18px;
  font-size: clamp(26px, 3vw, 40px);
}

.english-identity p:not(.eyebrow) {
  max-width: 960px;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 17px;
}

.section {
  padding: clamp(68px, 8vw, 112px) clamp(20px, 4vw, 64px);
  background: var(--white);
  border-top: 1px solid var(--line);
}

.section.muted {
  background: var(--paper);
}

.section.dark {
  color: var(--white);
  background: var(--charcoal);
  border-top: 0;
}

.section.dark h2,
.section.dark h3 {
  color: var(--white);
}

.section.dark .eyebrow {
  color: #78d2c7;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(30px, 6vw, 96px);
  align-items: start;
}

.section-title {
  max-width: 900px;
}

.section-title.narrow {
  max-width: 860px;
  margin-bottom: 40px;
}

.section-title.narrow p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
}

.body-copy {
  max-width: 820px;
}

.body-copy p {
  color: var(--ink-2);
  font-size: clamp(18px, 2vw, 22px);
}

.body-copy p:last-child {
  margin-bottom: 0;
}

.diagnosis-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 42px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.diagnosis-grid article {
  min-height: 245px;
  padding: 28px;
  background: #162126;
}

.diagnosis-grid span,
.service-list span {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--green);
  font-size: 13px;
  font-weight: 850;
}

.section.dark .diagnosis-grid span {
  color: #78d2c7;
}

.diagnosis-grid p {
  margin: 0;
  color: #c4d0d2;
}

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

.service-list article {
  padding: 30px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-list p {
  margin: 0;
  color: var(--muted);
}

.fit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.74fr);
  gap: 28px;
  align-items: stretch;
}

.check-list,
.boundary-card ul {
  display: grid;
  gap: 14px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink-2);
  font-size: 18px;
}

.check-list li,
.boundary-card li {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.boundary-card {
  padding: 32px;
  color: var(--white);
  background: var(--green-deep);
  border-radius: 8px;
}

.boundary-card h2,
.boundary-card .eyebrow {
  color: var(--white);
}

.boundary-card ul {
  color: #d5e5e2;
  font-size: 16px;
}

.boundary-card li {
  border-color: rgba(255, 255, 255, 0.18);
}

.self-check {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
}

.self-check p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.inquiry {
  background: linear-gradient(180deg, #ffffff 0%, #f4f7f6 100%);
}

.inquiry-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.42fr);
  gap: 28px;
  align-items: stretch;
  max-width: 1160px;
  margin-bottom: 28px;
}

.contact-lead {
  color: var(--ink-2) !important;
  font-size: clamp(20px, 2.2vw, 26px) !important;
  font-weight: 780;
}

.contact-copy {
  display: grid;
  gap: 14px;
  max-width: 860px;
}

.contact-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.wechat-card {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 28px;
  color: var(--white);
  background: var(--charcoal);
  border-radius: 8px;
}

.wechat-card h3 {
  margin: 0;
  color: var(--white);
}

.wechat-card .eyebrow {
  margin-bottom: 0;
  color: #78d2c7;
}

.wechat-card strong {
  color: #85d8ce;
  font-size: 24px;
  line-height: 1.25;
}

.wechat-card p {
  margin: 0;
  color: #c4d0d2;
}

.wechat-qr {
  width: 100%;
  max-width: 310px;
  height: auto;
  padding: 8px;
  background: var(--white);
  border-radius: 6px;
}

.wechat-card .wechat-id {
  color: var(--white);
  font-size: 18px;
}

.wechat-card .wechat-id b {
  color: #85d8ce;
}

.contact-form {
  max-width: 1060px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 22px 50px rgba(15, 23, 27, 0.05);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}

.field-grid label,
.field-full {
  display: grid;
  gap: 10px;
}

.field-full {
  margin-top: 18px;
}

.contact-form span,
.radio-field legend {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 16px 18px;
  color: var(--ink);
  background: #fbfcfc;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  line-height: 1.5;
  outline: none;
}

.radio-field {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}

.radio-field legend {
  flex-basis: 100%;
  margin-bottom: 10px;
}

.radio-field label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 16px;
  background: #fbfcfc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.radio-field input {
  width: auto;
  padding: 0;
  accent-color: var(--green);
}

.radio-field span {
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0;
  text-transform: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(10, 111, 100, 0.12);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 18px;
}

.contact-form-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.7fr);
  gap: 38px;
  align-items: start;
  background: var(--charcoal);
}

.contact h2,
.contact .eyebrow {
  color: var(--white);
}

.contact-panel {
  padding: 32px;
  color: #d6e0e0;
  background: #172226;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
}

.contact-panel strong {
  display: block;
  margin: 12px 0 18px;
  color: #85d8ce;
  font-size: 26px;
  line-height: 1.25;
}

.contact-panel p {
  margin-bottom: 0;
}

@media (max-width: 1040px) {
  .hero,
  .practice,
  .inquiry-grid,
  .split,
  .fit-grid,
  .contact,
  .self-check {
    grid-template-columns: 1fr;
  }

  .proof-strip,
  .proof-cards,
  .diagnosis-grid,
  .service-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-portrait {
    max-width: 620px;
    min-height: auto;
  }
}

@media (max-width: 700px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  h1 {
    font-size: clamp(38px, 12vw, 58px);
  }

  .hero {
    padding-top: 48px;
  }

  .proof-strip,
  .proof-cards,
  .diagnosis-grid,
  .service-list {
    grid-template-columns: 1fr;
  }

  .hero-portrait img {
    min-height: 360px;
  }

  .diagnosis-grid article {
    min-height: auto;
  }

  .field-grid,
  .contact-form-footer {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 20px;
  }

  .wechat-card {
    padding: 22px;
  }

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

  .button {
    width: 100%;
  }
}