:root {
  --ink: #172120;
  --muted: #697371;
  --paper: #f5f3ee;
  --white: #fff;
  --mist: #e8f1f0;
  --teal: #147f83;
  --teal-deep: #0c555b;
  --aqua: #5bb8bc;
  --sky: #b8dfe3;
  --alert: #e83246;
  --alert-on-dark: #ffd43b;
  --line: rgba(23, 33, 32, 0.14);
  --shadow: 0 24px 70px rgba(14, 68, 70, 0.13);
  --serif: "Noto Serif TC", "Libre Caslon Display", serif;
  --sans: "Noto Sans TC", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.75; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--serif); font-weight: 500; letter-spacing: .02em; }
h2 { margin-bottom: 24px; font-size: clamp(38px, 5vw, 64px); line-height: 1.22; }
.section-inner { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; padding: 10px 14px; color: white; background: var(--teal-deep); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.eyebrow { margin-bottom: 18px; color: var(--teal-deep); font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }

.site-header { position: fixed; z-index: 100; top: 0; left: 0; right: 0; display: flex; align-items: center; justify-content: space-between; min-height: 88px; padding: 14px 5vw; border-bottom: 1px solid transparent; transition: background .2s, border-color .2s, min-height .2s; }
.site-header.scrolled { min-height: 70px; border-color: var(--line); background: rgba(255,255,255,.93); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 13px; color: var(--ink); text-decoration: none; }
.brand img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; mix-blend-mode: multiply; }
.brand span { display: flex; flex-direction: column; line-height: 1.2; }
.brand strong { font-family: "Libre Caslon Display", Georgia, serif; font-size: 16px; font-weight: 400; letter-spacing: .05em; text-transform: uppercase; }
.brand small { margin-top: 4px; font-size: 10px; letter-spacing: .34em; }
.site-nav { display: flex; align-items: center; gap: 25px; }
.site-nav a { font-size: 14px; font-weight: 500; text-decoration: none; }
.site-nav a:not(.nav-cta):hover { color: var(--teal); }
.nav-cta { padding: 10px 18px; color: white; background: var(--teal-deep); border-radius: 999px; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; }
.menu-toggle span { display: block; width: 23px; height: 1px; margin: 7px auto; background: var(--ink); transition: transform .2s; }

.hero { position: relative; min-height: 820px; overflow: hidden; display: flex; align-items: center; padding: 150px 5vw 115px; isolation: isolate; background: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.91) 41%, rgba(255,255,255,.28) 72%), url("../assets/phu-quoc-sunrise-hero.png") center/cover; }
.hero::after { position: absolute; z-index: -1; right: -8vw; bottom: -36%; width: 62vw; height: 62vw; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; content: ""; box-shadow: inset 0 0 90px rgba(22,127,131,.22); }
.hero-wash { position: absolute; z-index: -1; top: -24%; left: -12%; width: 53vw; height: 54vw; border-radius: 42% 58% 60% 40% / 54% 34% 66% 46%; opacity: .94; background: radial-gradient(circle at 68% 58%, rgba(255,255,255,.75) 0 24%, rgba(184,223,227,.8) 45%, rgba(20,127,131,.76) 76%, transparent 78%); filter: blur(2px); }
.hero-content { width: min(830px, 75%); }
.hero h1 { margin-bottom: 25px; font-size: clamp(52px, 6.9vw, 88px); line-height: 1.12; }
.hero-lead { margin-bottom: 28px; font-size: clamp(17px, 2vw, 23px); letter-spacing: .08em; }
.date-lockup { display: flex; align-items: center; gap: 15px; margin: 12px 0 34px; }
.date-lockup > span { padding: 7px 9px; border: 1px solid var(--ink); font-size: 12px; font-weight: 700; letter-spacing: .1em; }
.date-lockup strong { font-family: "Libre Caslon Display", Georgia, serif; font-size: 25px; font-weight: 400; }
.date-lockup i { width: 48px; height: 1px; background: var(--ink); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 13px 24px; border: 1px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 600; text-decoration: none; transition: transform .18s, background .18s, color .18s, border-color .18s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--teal-deep); }
.button-primary:hover { background: var(--teal); }
.button-quiet { border-color: rgba(23,33,32,.35); background: rgba(255,255,255,.6); }
.hero-note { position: absolute; right: 5vw; bottom: 24px; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; max-width: 540px; }
.hero-note span { padding: 7px 13px; border: 1px solid rgba(255,255,255,.65); border-radius: 999px; color: white; background: rgba(12,85,91,.48); backdrop-filter: blur(8px); font-size: 12px; }

.intro { padding: 120px 0; background: white; }
.intro-grid { display: grid; grid-template-columns: 1fr .85fr; gap: 10%; align-items: start; }
.intro-copy { padding-top: 45px; color: var(--muted); font-size: 18px; }
.flight-line { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 74px; }
.flight-line article { padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); }
.flight-date { display: flex; align-items: baseline; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); font-family: "Libre Caslon Display", Georgia, serif; font-size: 26px; }
.flight-date span { font-family: var(--sans); color: var(--muted); font-size: 11px; letter-spacing: .14em; }
.flight-route { display: grid; grid-template-columns: 1fr 1.2fr 1fr; align-items: center; gap: 12px; padding: 28px 0 20px; text-align: center; }
.flight-route strong { display: block; font-family: "Libre Caslon Display", Georgia, serif; font-size: 33px; font-weight: 400; line-height: 1; }
.flight-route span { color: var(--muted); font-size: 12px; }
.route-mark { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 6px; }
.route-mark i { height: 1px; background: var(--aqua); }
.flight-line article > p { margin: 0; color: var(--muted); font-size: 12px; text-align: center; }

.included-section { padding: 120px 0; background: var(--paper); }
.section-heading { max-width: 700px; margin-bottom: 55px; }
.section-heading > p:last-child { color: var(--muted); font-size: 18px; }
.section-heading.centered { margin-right: auto; margin-left: auto; text-align: center; }
.included-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.included-grid article { min-height: 265px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.42); transition: background .2s, transform .2s; }
.included-grid article:hover { z-index: 1; background: white; transform: translateY(-4px); box-shadow: var(--shadow); }
.included-grid article > span { color: var(--teal); font-family: "Libre Caslon Display", serif; font-size: 14px; }
.included-grid h3 { margin: 31px 0 15px; font-family: var(--serif); font-size: 23px; font-weight: 500; line-height: 1.45; }
.included-grid p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.hotel-section { display: grid; grid-template-columns: 1.08fr .92fr; min-height: 610px; background: var(--teal-deep); color: white; }
.hotel-image { overflow: hidden; }
.hotel-image img { width: 100%; height: 100%; object-fit: cover; }
.hotel-copy { display: flex; flex-direction: column; justify-content: center; padding: 8vw; }
.hotel-copy .eyebrow { color: var(--sky); }
.hotel-copy h2 { font-size: clamp(40px, 5vw, 68px); }
.hotel-copy > p:not(.eyebrow) { color: rgba(255,255,255,.72); }
.hotel-copy .hotel-name { margin-bottom: 8px !important; color: white !important; font-family: "Libre Caslon Display", serif; font-size: 23px; }
.hotel-copy a { margin-top: 20px; color: white; text-underline-offset: 5px; }

.plans-section { padding: 130px 0; background: white; }
.plans-section .section-heading { max-width: 980px; }
.section-heading.centered .price-alert { max-width: 900px; margin: 12px auto 0; color: var(--alert); font-size: 22px; font-weight: 700; line-height: 1.6; letter-spacing: .025em; }
.plan-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 980px; margin: 0 auto; }
.plan-card { position: relative; display: flex; flex-direction: column; padding: 48px; border: 1px solid var(--line); border-radius: 28px; background: var(--paper); box-shadow: 0 16px 50px rgba(23,33,32,.06); }
.plan-featured { color: white; background: var(--teal-deep); box-shadow: var(--shadow); }
.plan-label { position: absolute; top: 20px; right: 20px; padding: 6px 11px; border-radius: 999px; color: var(--teal-deep); background: var(--sky); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.plan-kicker { margin-bottom: 10px; color: var(--teal); font-size: 11px; font-weight: 700; letter-spacing: .2em; }
.plan-featured .plan-kicker { color: var(--sky); }
.plan-card h3 { margin-bottom: 12px; font-family: var(--serif); font-size: 38px; font-weight: 500; }
.plan-desc { min-height: 52px; color: var(--muted); }
.plan-featured .plan-desc, .plan-featured .room-total, .plan-featured li { color: rgba(255,255,255,.72); }
.price { margin: 26px 0 5px; }
.price .currency-label { display: flex; align-items: baseline; gap: 8px; color: var(--alert); font-size: 22px; font-weight: 700; line-height: 1.2; letter-spacing: .04em; }
.price .currency-label small { font-size: 14px; font-weight: 600; letter-spacing: .02em; }
.plan-featured .price .currency-label { color: var(--alert-on-dark); }
.price strong { display: block; margin-top: 4px; font-family: "Libre Caslon Display", Georgia, serif; font-size: clamp(54px, 6vw, 78px); font-weight: 400; line-height: 1; letter-spacing: -.025em; }
.room-total { padding-bottom: 24px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.plan-featured .room-total { border-color: rgba(255,255,255,.18); }
.plan-card ul { flex: 1; margin: 12px 0 32px; padding: 0; list-style: none; }
.plan-card li { position: relative; padding: 9px 0 9px 24px; color: var(--muted); font-size: 14px; }
.plan-card li::before { position: absolute; left: 0; color: var(--teal); content: "✓"; }
.plan-featured li::before { color: var(--sky); }
.plan-featured .button-primary { color: var(--teal-deep); background: white; }
.button-outline { border-color: var(--teal-deep); color: var(--teal-deep); }
.button-outline:hover { color: white; background: var(--teal-deep); }
.notes-section { padding: 120px 0; background: var(--mist); }
.notes-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 9%; }
.notes-list details { border-top: 1px solid rgba(12,85,91,.18); }
.notes-list details:last-child { border-bottom: 1px solid rgba(12,85,91,.18); }
.notes-list summary { padding: 23px 34px 23px 0; cursor: pointer; font-family: var(--serif); font-size: 19px; font-weight: 600; list-style: none; }
.notes-list summary::-webkit-details-marker { display: none; }
.notes-list summary::after { float: right; color: var(--teal); content: "+"; font-family: var(--sans); }
.notes-list details[open] summary::after { content: "−"; }
.notes-list details p { padding-right: 40px; color: var(--muted); font-size: 14px; }
.notes-list details .booking-warning { padding-right: 0; color: var(--alert); font-size: 20px; font-weight: 700; line-height: 1.65; }

.final-cta { position: relative; overflow: hidden; padding: 130px 0; color: white; background: #0d454b; text-align: center; isolation: isolate; }
.final-cta .section-inner { position: relative; z-index: 1; }
.final-cta .eyebrow { color: var(--sky); }
.final-cta h2 { font-size: clamp(44px, 6.5vw, 82px); }
.final-cta p:not(.eyebrow) { color: rgba(255,255,255,.72); }
.final-orb { position: absolute; top: -160px; left: 50%; width: 680px; height: 680px; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; background: radial-gradient(circle at 35% 30%, rgba(91,184,188,.55), rgba(12,85,91,.1) 62%, transparent 65%); transform: translateX(-50%); }
.button-light { margin-top: 16px; color: var(--teal-deep); background: white; }

footer { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 42px 5vw; background: white; }
.footer-brand img { width: 42px; height: 42px; }
footer > div { display: flex; gap: 22px; }
footer > div a { color: var(--muted); font-size: 13px; text-decoration: none; }
footer > p { grid-column: 1 / -1; margin: 0; color: #87908e; font-size: 11px; }

@media (max-width: 900px) {
  .site-header { min-height: 74px; background: rgba(255,255,255,.92); }
  .brand strong { font-size: 13px; }
  .menu-toggle { display: block; z-index: 2; }
  .site-nav { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; gap: 26px; opacity: 0; visibility: hidden; background: rgba(245,243,238,.98); transition: opacity .2s, visibility .2s; }
  .site-nav.open { opacity: 1; visibility: visible; }
  .site-nav a { font-family: var(--serif); font-size: 25px; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero { min-height: 760px; align-items: flex-start; padding-top: 150px; background: linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.82) 55%, rgba(12,85,91,.2) 100%), url("../assets/phu-quoc-sunrise-hero.png") 62% center/cover; }
  .hero-content { width: 100%; }
  .hero-note { left: 24px; right: 24px; justify-content: flex-start; }
  .intro-grid, .notes-grid { grid-template-columns: 1fr; gap: 24px; }
  .intro-copy { padding-top: 0; }
  .included-grid { grid-template-columns: 1fr 1fr; }
  .hotel-section { grid-template-columns: 1fr; }
  .hotel-image { height: 390px; }
  .hotel-copy { padding: 70px 8vw; }
  .plan-card { padding: 38px 30px; }
}

@media (max-width: 680px) {
  .section-inner { width: min(100% - 32px, 1160px); }
  .brand small { display: none; }
  .hero { min-height: 720px; padding: 130px 20px 130px; }
  .hero h1 { font-size: 40px; }
  .hero-wash { width: 110vw; height: 100vw; }
  .date-lockup { gap: 9px; }
  .date-lockup i { width: 28px; }
  .button { width: 100%; }
  .hero-note span { padding: 6px 10px; }
  .intro, .included-section, .plans-section, .notes-section, .final-cta { padding: 85px 0; }
  .flight-line, .plan-grid { grid-template-columns: 1fr; }
  .flight-line article { padding: 22px 16px; }
  .flight-route strong { font-size: 28px; }
  .included-grid { grid-template-columns: 1fr; }
  .included-grid article { min-height: auto; }
  .hotel-image { height: 300px; }
  .plan-card { padding: 38px 24px; }
  .price strong { font-size: 58px; }
  .section-heading.centered .price-alert { font-size: 20px; line-height: 1.55; }
  .notes-list details .booking-warning { font-size: 18px; }
  footer { grid-template-columns: 1fr; }
  footer > div { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}