:root {
  --ink: #17211f;
  --muted: #59645e;
  --line: #d4ddd7;
  --paper: #f7f9f7;
  --panel: #ffffff;
  --green: #1f634c;
  --green-deep: #123c30;
  --aqua: #287b86;
  --clay: #a85135;
  --gold: #c18b2f;
  --soft: #eef4f1;
  --blueprint: #20333a;
  --shadow: 0 8px 22px rgba(18, 42, 34, 0.08);
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.7;
}

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

a {
  color: var(--green);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: 0.65rem 0.85rem;
  background: var(--green-deep);
  color: #fff;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 249, 247, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-inner,
.section-inner,
.footer-inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  text-decoration: none;
  min-width: 220px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(18, 60, 48, 0.22);
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(18, 42, 34, 0.12);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand strong,
.brand span {
  display: block;
}

.brand .brand-mark {
  display: grid;
}

.brand > span:not(.brand-mark) {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 6px;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  font-size: 0.94rem;
}

.site-nav a {
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--soft);
  color: var(--green-deep);
}

.hero {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  align-items: stretch;
}

.hero-copy {
  padding: clamp(3rem, 6vw, 5rem) clamp(1.5rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--clay);
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.22;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2rem, 3.6vw, 3.35rem);
  max-width: 11.5em;
}

.hero-copy .lead {
  max-width: 680px;
  margin: 1.3rem 0 0;
  color: #33423a;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.65rem;
}

.trust-panel {
  width: min(640px, 100%);
  margin-top: 1.55rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid rgba(31, 99, 76, 0.22);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: none;
}

.trust-panel div {
  min-width: 0;
  padding: 0.95rem;
  border-right: 1px solid rgba(31, 99, 76, 0.16);
}

.trust-panel div:last-child {
  border-right: 0;
}

.trust-panel strong,
.trust-panel span {
  display: block;
}

.trust-panel strong {
  color: var(--green-deep);
  line-height: 1.35;
}

.trust-panel span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1rem;
  border: 1px solid var(--green);
  border-radius: 6px;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

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

.button:hover {
  border-color: var(--green-deep);
  background: var(--green-deep);
  color: #fff;
}

.hero-media {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

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

.media-badge {
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 1;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.38);
  background: rgba(18, 42, 34, 0.86);
  color: #fff;
}

.media-badge strong,
.media-badge span {
  display: block;
}

.media-badge span {
  margin-top: 0.2rem;
  color: #dcebe4;
  font-size: 0.92rem;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-item {
  padding: 1.3rem 1rem;
  background: #fff;
  text-align: center;
}

.proof-item strong {
  display: block;
  color: var(--green-deep);
  font-size: 1.2rem;
}

.proof-item span {
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section.dense {
  padding-top: clamp(2.5rem, 5vw, 4rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section.alt {
  background: var(--soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-head h2,
.page-title h1 {
  font-size: clamp(1.8rem, 3.2vw, 3rem);
}

.section-head p,
.page-title p {
  color: var(--muted);
  margin: 0.8rem 0 0;
  font-size: 1.05rem;
}

.page-title {
  padding: clamp(3.2rem, 7vw, 5rem) 0;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.grid {
  display: grid;
  gap: 1rem;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.contact-panel,
.spec-table,
.timeline-item,
.benefit-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: none;
}

.card,
.benefit-item {
  transition: border-color 160ms ease;
}

.card:hover,
.benefit-item:hover {
  border-color: rgba(31, 99, 76, 0.35);
}

.card {
  overflow: hidden;
}

.card-body {
  padding: 1.35rem;
}

.card h3,
.contact-panel h2,
.timeline-item h3 {
  font-size: 1.25rem;
}

.card p,
.timeline-item p {
  margin: 0.6rem 0 0;
  color: var(--muted);
}

.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.decision-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid rgba(31, 99, 76, 0.18);
  background: #fff;
}

.decision-copy h2 {
  font-size: clamp(1.65rem, 2.6vw, 2.55rem);
}

.decision-copy p {
  color: var(--muted);
  margin: 1rem 0 0;
}

.system-visual {
  display: block;
  margin-top: 1.4rem;
  overflow: hidden;
  border: 1px solid rgba(31, 99, 76, 0.18);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: none;
}

.system-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.benefit-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.benefit-item {
  padding: 1rem;
}

.benefit-item strong,
.benefit-item span {
  display: block;
}

.benefit-item strong {
  color: var(--green-deep);
  line-height: 1.35;
}

.benefit-item span {
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1fr);
  gap: clamp(1.5rem, 5vw, 3rem);
  align-items: center;
}

.split img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: none;
}

.notice-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.notice-box strong,
.notice-box span {
  display: block;
}

.notice-box strong {
  color: var(--green-deep);
}

.notice-box span {
  margin-top: 0.35rem;
  color: var(--muted);
}

.text-flow p {
  color: var(--muted);
  margin: 0.85rem 0;
}

.check-list,
.project-list {
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.check-list li,
.project-list li {
  position: relative;
  padding-left: 1.3rem;
  margin: 0.55rem 0;
  color: #37463e;
}

.check-list li::before,
.project-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--gold);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  padding: 1.25rem;
}

.project-categories {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.project-category {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: none;
}

.project-category.wide {
  grid-column: 1 / -1;
}

.project-category h3 {
  font-size: 1.35rem;
}

.project-category p:not(.eyebrow) {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.project-category ul {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.project-category li {
  padding: 0.38rem 0.62rem;
  border: 1px solid rgba(31, 99, 76, 0.18);
  border-radius: 999px;
  background: var(--soft);
  color: #33423a;
  font-size: 0.92rem;
  line-height: 1.45;
}

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

.method-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: none;
}

.method-grid article {
  padding: 1.1rem;
  border-top: 4px solid var(--green);
}

.method-grid strong,
.method-grid span {
  display: block;
}

.method-grid strong {
  color: var(--green-deep);
  font-size: 1.05rem;
}

.method-grid span {
  margin-top: 0.45rem;
  color: var(--muted);
}

.spec-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
}

.spec-table th,
.spec-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 30%;
  color: var(--green-deep);
  background: #f7faf8;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: none;
}

.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: var(--green-deep);
  color: #fff;
}

.compare-table tbody th {
  width: 18%;
  color: var(--green-deep);
  background: #f7faf8;
}

.compare-table td {
  color: var(--muted);
}

.compare-table tr:last-child th,
.compare-table tr:last-child td {
  border-bottom: 0;
}

.cta-band {
  background: var(--green-deep);
  color: #fff;
  padding: clamp(2.4rem, 6vw, 4rem) 0;
}

.sticky-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 12;
  display: flex;
  gap: 0.55rem;
}

.sticky-contact a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  background: var(--green-deep);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(18, 42, 34, 0.22);
}

.sticky-contact a:last-child {
  background: var(--clay);
}

.cta-band .section-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.cta-band p {
  margin: 0.55rem 0 0;
  color: #dbeae4;
}

.cta-band .button {
  border-color: #fff;
  background: #fff;
  color: var(--green-deep);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: 1rem;
  align-items: start;
}

.contact-panel {
  padding: 1.4rem;
}

.contact-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}

.contact-list li:last-child {
  border-bottom: 0;
}

.notice-box {
  margin-top: 1rem;
  padding: 1rem;
  background: #f9fbf9;
}

.notice-box {
  border-left: 4px solid var(--gold);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: none;
}

.faq-list summary {
  cursor: pointer;
  padding: 1rem 1.15rem;
  color: var(--green-deep);
  font-weight: 800;
  list-style-position: outside;
}

.faq-list p {
  margin: 0;
  padding: 0 1.15rem 1rem;
  color: var(--muted);
}

.site-footer {
  background: #111915;
  color: #dce4df;
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer a {
  color: #fff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.small {
  color: #94a39b;
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .menu-button {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    white-space: normal;
  }

  .hero-grid,
  .split,
  .contact-grid,
  .decision-grid,
  .project-categories {
    grid-template-columns: 1fr;
  }

  .project-category.wide {
    grid-column: auto;
  }

  .hero-grid {
    min-height: 0;
  }

  .hero-media {
    min-height: 320px;
  }

  .proof-strip,
  .grid.three,
  .grid.two,
  .grid.four,
  .benefit-list,
  .method-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cta-band .section-inner,
  .footer-inner {
    display: block;
  }

  .footer-links {
    margin-top: 1rem;
  }
}

@media (max-width: 560px) {
  .header-inner,
  .section-inner,
  .footer-inner {
    width: min(100% - 24px, 1120px);
  }

  .brand {
    min-width: 0;
  }

  .brand > span:not(.brand-mark) {
    display: none;
  }

  .brand-mark {
    display: grid;
  }

  .proof-strip,
  .grid.three,
  .grid.two,
  .grid.four,
  .benefit-list,
  .trust-panel,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .trust-panel div {
    border-right: 0;
    border-bottom: 1px solid rgba(31, 99, 76, 0.16);
  }

  .trust-panel div:last-child {
    border-bottom: 0;
  }

  .hero-copy {
    padding: 2.6rem 1rem;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .sticky-contact {
    display: none;
  }

  .sticky-contact a {
    flex: 1;
  }

  .site-footer {
    padding-bottom: 2rem;
  }

  .spec-table,
  .spec-table tbody,
  .spec-table tr,
  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }
}