/* ─── RESET & BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black:     #000000;
  --white:     #FFFFFF;
  --cream:     #F5F0EB;
  --gray-light: #E8E4E0;
  --gray-mid:  #888888;
  --text:      #111111;
  --text-muted: #888888;
  --border:    #D8D3CE;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Noto Sans TC', sans-serif;
  --font-mono:  'DM Mono', monospace;

  --radius-sm: 2px;
  --radius-md: 2px;
  --radius-lg: 0px;

  --shadow-sm: 0 2px 12px rgba(0,0,0,.06);
  --shadow-md: 0 8px 40px rgba(0,0,0,.10);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.15);

  --transition: 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  font-weight: 300;
  background: var(--cream);
  color: var(--text);
  line-height: 1.8;
  letter-spacing: 0.03em;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; object-fit: cover; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ─── UTILITIES ─── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 40px;
}

.text-accent { color: var(--gray-mid); }

.mono {
  font-family: var(--font-mono);
  font-size: .85em;
  letter-spacing: .04em;
}

.section-eyebrow {
  font-size: .7rem;
  font-weight: 400;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 56px;
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 400;
  letter-spacing: 0.12em;
  font-size: .8rem;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--sm  { padding: 10px 20px; }
.btn--lg  { padding: 16px 36px; }
.btn--full { width: 100%; }

.btn--primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.btn--primary:hover {
  background: var(--white);
  color: var(--black);
  border-color: var(--black);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn--ghost:hover {
  background: var(--white);
  color: var(--black);
}

/* ─── NAVBAR ─── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar__logo {
  display: flex;
  align-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--black);
  letter-spacing: 0.05em;
}
.logo-accent { color: var(--gray-mid); }

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 40px;
  font-size: .72rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.navbar__nav a:not(.btn) {
  color: var(--text);
  position: relative;
}
.navbar__nav a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--black);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.navbar__nav a:not(.btn):hover::after { transform: scaleX(1); }

.navbar__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}
.navbar__burger span {
  display: block;
  width: 24px; height: 1px;
  background: var(--black);
  transition: var(--transition);
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding: 160px 0 100px;
  max-width: 760px;
}

.hero__eyebrow {
  font-size: .7rem;
  font-weight: 300;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: 24px;
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
  margin-bottom: 28px;
}
.hero__subtitle {
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,.8);
  margin-bottom: 48px;
  line-height: 2;
  letter-spacing: 0.06em;
  max-width: 540px;
}
.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero__badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.badge {
  padding: 7px 16px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.3);
  font-size: .7rem;
  font-weight: 300;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.85);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: .65rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  animation: fadeInUp 1s ease 1s both;
}
.scroll-arrow {
  width: 16px; height: 16px;
  border-right: 1px solid rgba(255,255,255,.5);
  border-bottom: 1px solid rgba(255,255,255,.5);
  transform: rotate(45deg);
  animation: bounce 2s ease infinite;
}
@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50%       { transform: rotate(45deg) translateY(5px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.br-desktop { display: inline; }

/* ─── PAIN ─── */
.pain {
  position: relative;
  padding: 120px 0;
  color: var(--white);
  text-align: center;
  overflow: hidden;
}
.pain__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.pain__bg img { width: 100%; height: 100%; object-fit: cover; }
.pain__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
}
.pain .container { position: relative; z-index: 1; }

.pain .section-eyebrow { color: rgba(255,255,255,.5); }
.pain .section-title { color: var(--white); }
.pain .text-accent { color: rgba(255,255,255,.5); }

.pain__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.1);
  margin-bottom: 64px;
  border: 1px solid rgba(255,255,255,.1);
}
.pain__card {
  background: rgba(0,0,0,.3);
  padding: 40px 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.pain__card:hover {
  background: rgba(255,255,255,.05);
}

.pain__icon-wrap {
  width: 60px; height: 60px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,.2);
}
.pain__icon-wrap img { width: 100%; height: 100%; object-fit: cover; }

.pain__card p {
  font-size: .88rem;
  font-weight: 300;
  color: rgba(255,255,255,.8);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

.pain__conclusion {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255,255,255,.85);
  letter-spacing: 0.05em;
}
.pain__conclusion strong {
  font-weight: 500;
  color: var(--white);
}

/* ─── SERVICES ─── */
.services {
  padding: 120px 0;
  background: var(--white);
  text-align: center;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-light);
  border: 1px solid var(--gray-light);
}

.service-card {
  position: relative;
  background: var(--white);
  text-align: left;
  transition: var(--transition);
  overflow: hidden;
}
.service-card:hover { background: var(--cream); }
.service-card--featured { background: var(--cream); }
.service-card--featured:hover { background: #EDE8E2; }

.service-card__badge {
  position: absolute;
  top: 16px; right: 16px;
  z-index: 2;
  background: var(--black);
  color: var(--white);
  font-size: .65rem;
  font-weight: 400;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 5px 14px;
}

.service-card__img {
  width: 100%;
  height: 200px;
  overflow: hidden;
}
.service-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.service-card:hover .service-card__img img { transform: scale(1.04); }

.service-card__body {
  padding: 32px 32px 36px;
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.service-card p {
  font-size: .88rem;
  font-weight: 300;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.9;
}
.service-card__features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.service-card__features li {
  font-size: .82rem;
  font-weight: 300;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.03em;
}
.service-card__features li::before {
  content: '—';
  color: var(--gray-mid);
  flex-shrink: 0;
}
.service-card__tag {
  display: inline-block;
  font-size: .65rem;
  font-weight: 400;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ─── WHY ME ─── */
.why-me {
  position: relative;
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
}
.why-me__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.why-me__bg img { width: 100%; height: 100%; object-fit: cover; }
.why-me__overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.88);
}
.why-me .container { position: relative; z-index: 1; }
.why-me .section-title { margin-bottom: 64px; }
.why-me .text-accent { color: var(--gray-mid); }

.why-me__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.why-card {
  background: var(--white);
  padding: 48px 36px;
  text-align: left;
  transition: var(--transition);
}
.why-card:hover { background: var(--cream); }

.why-card__number {
  font-size: 3rem;
  font-weight: 500;
  color: var(--gray-light);
  margin-bottom: 24px;
  line-height: 1;
  letter-spacing: 0;
}
.why-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.5;
}
.why-card p {
  font-size: .88rem;
  font-weight: 300;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.9;
}
.why-card p strong { font-weight: 500; color: var(--text); }
.why-card__note {
  font-size: .78rem !important;
  font-weight: 300 !important;
  color: var(--gray-mid) !important;
  border-left: 2px solid var(--border);
  padding-left: 12px;
  margin-bottom: 0 !important;
  letter-spacing: 0.04em;
}

/* ─── ABOUT ─── */
.about {
  padding: 120px 0;
  background: var(--cream);
}
.about__inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 80px;
  align-items: start;
}
.about__avatar-wrap {
  position: sticky;
  top: 100px;
}
.about__avatar {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--border);
}
.avatar-placeholder {
  width: 100%; height: 100%;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-mid);
  font-size: .82rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.about__content .section-title { margin-bottom: 28px; }
.about__content p {
  font-weight: 300;
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: .95rem;
  line-height: 2;
  letter-spacing: 0.04em;
}

.about__stats {
  display: flex;
  gap: 48px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.stat__num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1;
  margin-bottom: 8px;
}
.stat__unit { font-size: 1rem; font-family: var(--font-sans); }
.stat__label {
  font-size: .72rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ─── CONTACT ─── */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 80vh;
}
.contact__img-panel {
  position: relative;
  overflow: hidden;
}
.contact__img-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact__right {
  background: var(--white);
  padding: 80px 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 40px;
}

.contact__copy .section-title { margin-bottom: 16px; }
.contact__copy > p {
  font-weight: 300;
  color: var(--text-muted);
  margin-bottom: 36px;
  font-size: .9rem;
  letter-spacing: 0.04em;
}
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contact__item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.contact__label {
  font-size: .65rem;
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--black);
  padding: 5px 12px;
  min-width: 64px;
  text-align: center;
}
.contact__link {
  font-size: .88rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: 0.04em;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.contact__link:hover { border-bottom-color: var(--text); }

/* form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text);
}
.form-group input,
.form-group textarea {
  padding: 12px 0;
  border: none;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: .9rem;
  font-weight: 300;
  color: var(--text);
  background: transparent;
  transition: var(--transition);
  resize: none;
  outline: none;
  letter-spacing: 0.04em;
}
.form-group input:focus,
.form-group textarea:focus {
  border-bottom-color: var(--black);
}
.form-group input.error,
.form-group textarea.error {
  border-bottom-color: #c0392b;
}
.form-note {
  font-size: .72rem;
  font-weight: 300;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.06em;
}
.form-success {
  background: transparent;
  border: 1px solid var(--border);
  padding: 16px;
  text-align: center;
  font-size: .82rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: 0.08em;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--black);
  color: rgba(255,255,255,.7);
  padding: 64px 0 0;
}
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  gap: 40px;
  flex-wrap: wrap;
}
.footer__logo { color: var(--white) !important; }
.footer__logo .logo-accent { color: rgba(255,255,255,.4); }
.footer__brand p {
  font-size: .78rem;
  font-weight: 300;
  color: rgba(255,255,255,.4);
  letter-spacing: 0.06em;
  margin-top: 12px;
}
.footer__links {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.footer__links a {
  font-size: .72rem;
  font-weight: 300;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  transition: var(--transition);
}
.footer__links a:hover { color: var(--white); }
.footer__bottom {
  padding: 20px 0;
  text-align: center;
}
.footer__bottom p {
  font-size: .72rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,.25);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .pain__grid { grid-template-columns: repeat(2, 1fr); }
  .why-me__grid { grid-template-columns: repeat(2, 1fr); }
  .about__inner { grid-template-columns: 200px 1fr; gap: 48px; }
  .contact { grid-template-columns: 1fr; }
  .contact__img-panel { height: 320px; }
  .contact__right { padding: 60px 40px; }
}

@media (max-width: 768px) {
  .container { padding: 0 24px; }

  .navbar__nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 24px;
    gap: 0;
    border-bottom: 1px solid var(--gray-light);
    box-shadow: var(--shadow-md);
  }
  .navbar__nav.open { display: flex; }
  .navbar__nav a:not(.btn) {
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-light);
    font-size: .8rem;
  }
  .navbar__nav a:not(.btn)::after { display: none; }
  .navbar__nav .btn { margin-top: 16px; width: 100%; justify-content: center; }
  .navbar__burger { display: flex; }
  .navbar__burger.open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
  .navbar__burger.open span:nth-child(2) { opacity: 0; }
  .navbar__burger.open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

  .hero__inner { padding: 140px 0 80px; }
  .br-desktop { display: none; }

  .pain__grid { grid-template-columns: 1fr 1fr; }
  .services__grid { grid-template-columns: 1fr; }
  .why-me__grid { grid-template-columns: 1fr; }

  .about__inner { grid-template-columns: 1fr; gap: 40px; }
  .about__avatar-wrap { position: static; max-width: 180px; margin: 0 auto; }
  .about__stats { gap: 24px; }

  .contact__right { padding: 48px 24px; }
}

@media (max-width: 480px) {
  .pain__grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; }
  .hero__badges { gap: 8px; }
  .about__stats { flex-direction: column; gap: 20px; }
  .section-title { font-size: 1.7rem; }
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }