/* ==========================================================================
   云暖·肆芳 — 苹果式高级感设计系统
   Monochrome + 大留白 + 单图大视觉 + 克制排版
   ========================================================================== */
:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-dark: #101012;
  --ink: #1d1d1f;
  --ink-soft: #3a3a3c;
  --ink-mute: #6e6e73;
  --ink-faint: #86868b;
  --line: rgba(0, 0, 0, .08);
  --line-strong: rgba(0, 0, 0, .14);
  --gold: #b8893f;
  --gold-soft: #c9a05a;
  --white-70: rgba(255, 255, 255, .72);
  --white-55: rgba(255, 255, 255, .55);
  --radius: 20px;
  --radius-lg: 28px;
  --container: 1120px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --serif: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", serif;
  --sans: "Inter", "SF Pro Display", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.serif { font-family: var(--serif); }

/* ===== 排版 ===== */
.eyebrow { display: inline-block; font-size: 12px; letter-spacing: .28em; text-transform: uppercase; color: var(--ink-faint); font-weight: 600; }
.eyebrow.gold { color: var(--gold); }
.h-display { font-family: var(--sans); font-weight: 700; letter-spacing: -.01em; line-height: 1.12; font-size: clamp(34px, 5.2vw, 64px); }
.h-display em { font-style: normal; }
.h-title { font-family: var(--sans); font-weight: 700; letter-spacing: -.01em; line-height: 1.2; font-size: clamp(26px, 3.6vw, 40px); }
.lead { font-size: clamp(16px, 1.4vw, 18px); line-height: 1.8; color: var(--ink-mute); }
.lead b { color: var(--ink); font-weight: 600; }
.small { font-size: 13.5px; color: var(--ink-faint); }

section { padding: clamp(84px, 12vw, 148px) 0; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto clamp(44px, 6vw, 68px); }
.section-head .eyebrow { margin-bottom: 18px; }
.section-head h2 { margin-top: 14px; }
.section-head p { margin-top: 18px; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 15px 32px; border-radius: 980px; font-size: 15px; font-weight: 600; transition: all .35s var(--ease); white-space: nowrap; }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; transform: translateY(-1px); }
.btn-light { background: rgba(255,255,255,.92); color: var(--ink); }
.btn-light:hover { background: #fff; transform: translateY(-1px); }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); background: var(--bg-soft); }
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: #a97a33; transform: translateY(-1px); }
.btn-line-light { border: 1px solid rgba(255,255,255,.35); color: #fff; }
.btn-line-light:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn em { font-style: normal; transition: transform .3s var(--ease); display: inline-block; margin-left: 2px; }
.btn:hover em { transform: translateX(4px); }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.78); backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; }
.logo-img { width: 150px; height: auto; display: block; }
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav-link { font-size: 14px; color: var(--ink-soft); padding: 9px 14px; border-radius: 100px; transition: all .3s var(--ease); font-weight: 500; }
.nav-link:hover { color: var(--ink); background: var(--bg-soft); }
.nav-link.active { color: var(--ink); font-weight: 600; }
.nav-cta { font-size: 14px; font-weight: 600; color: #fff; background: var(--ink); padding: 9px 20px; border-radius: 100px; transition: all .3s var(--ease); white-space: nowrap; }
.nav-cta:hover { background: #000; transform: translateY(-1px); }
.nav-burger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto; }
.nav-burger span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }

/* 语言切换器 */
.lang { position: relative; flex-shrink: 0; }
.lang-btn { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 600; color: var(--ink-soft); padding: 8px 12px; border-radius: 100px; transition: all .3s var(--ease); white-space: nowrap; }
.lang-btn svg { width: 15px; height: 15px; color: var(--ink-mute); }
.lang-btn:hover, .lang.is-open .lang-btn { color: var(--ink); background: var(--bg-soft); }
.lang-menu { position: absolute; top: calc(100% + 10px); right: 0; z-index: 300; min-width: 200px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 18px 50px rgba(0,0,0,.14); padding: 8px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: all .25s var(--ease); }
.lang.is-open .lang-menu { opacity: 1; transform: none; pointer-events: auto; }
.lang-item { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; padding: 9px 12px; border-radius: 10px; font-size: 13.5px; color: var(--ink); transition: background .2s; }
.lang-item:hover { background: var(--bg-soft); }
.lang-item .lang-name { font-weight: 600; }
.lang-item .lang-native { color: var(--ink-faint); font-size: 12px; }
.lang-item.on { color: var(--ink); }
.lang-item.on::after { content: "✓"; color: var(--gold); font-weight: 700; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 92vh; min-height: 92svh; display: flex; align-items: center; overflow: hidden; color: #fff; isolation: isolate; }
.hero-img { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: center; transform: scale(1.05); animation: slowZoom 20s var(--ease) forwards; }
@keyframes slowZoom { to { transform: scale(1); } }
.hero-veil { position: absolute; inset: 0; z-index: -1; background: linear-gradient(105deg, rgba(10,10,12,.82) 0%, rgba(10,10,12,.42) 48%, rgba(10,10,12,.72) 100%); }
.hero-content { padding: 90px 0 100px; max-width: 720px; }
.hero-title { font-weight: 700; letter-spacing: -.015em; font-size: clamp(40px, 6.4vw, 72px); line-height: 1.08; margin: 20px 0 22px; }
.hero-sub { font-size: clamp(16px, 1.6vw, 19px); line-height: 1.9; color: var(--white-70); max-width: 560px; }
.hero-actions { display: flex; gap: 14px; margin-top: 38px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: clamp(28px, 5vw, 60px); margin-top: 64px; padding-top: 34px; border-top: 1px solid rgba(255,255,255,.2); flex-wrap: wrap; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats b { font-family: var(--serif); font-weight: 600; font-size: clamp(28px, 3.6vw, 42px); color: #fff; line-height: 1; letter-spacing: -.01em; }
.hero-stats span { font-size: 12.5px; letter-spacing: .1em; color: var(--white-55); margin-top: 8px; }
.hero-scroll { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); font-size: 11px; letter-spacing: .3em; color: var(--white-55); display: flex; flex-direction: column; align-items: center; gap: 10px; }
.hero-scroll i { width: 1px; height: 38px; background: linear-gradient(#fff, transparent); position: relative; display: block; font-style: normal; }
.hero-scroll i::after { content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 5px; height: 5px; border-radius: 50%; background: #fff; animation: drop 2s var(--ease) infinite; }
@keyframes drop { 0% { top: 0; opacity: 1; } 100% { top: 38px; opacity: 0; } }

/* ===== 亮区/暗区交替 ===== */
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--bg-dark); color: #fff; }
.section-dark .lead { color: var(--white-70); }
.section-dark .eyebrow { color: var(--white-55); }
.section-dark .eyebrow.gold { color: var(--gold-soft); }

/* ===== 卡片栅格 ===== */
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 32px; transition: all .4s var(--ease); }
.card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0,0,0,.08); border-color: var(--line-strong); }
.card.gold { border-top: 3px solid var(--gold); }
.card-ic { width: 48px; height: 48px; border-radius: 14px; background: var(--bg-soft); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--ink); }
.card h3 { font-size: 20px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--ink-mute); line-height: 1.8; }
.card b { color: var(--ink); }

/* ===== 大数字 ===== */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.fact { text-align: center; }
.fact b { font-family: var(--serif); font-size: clamp(40px, 5vw, 60px); font-weight: 600; color: var(--ink); line-height: 1; display: block; letter-spacing: -.01em; }
.fact.gold b { color: var(--gold); }
.fact span { display: block; font-size: 13.5px; color: var(--ink-mute); margin-top: 12px; }
.section-dark .fact b { color: #fff; }
.section-dark .fact.gold b { color: var(--gold-soft); }
.section-dark .fact span { color: var(--white-55); }

/* ===== 大图视觉块 ===== */
.media { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: clamp(320px, 46vw, 560px); background-size: cover; background-position: center; display: flex; align-items: flex-end; isolation: isolate; }
.media::before { content: ""; position: absolute; inset: 0; z-index: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.55) 100%); }
.media-body { position: relative; z-index: 1; padding: clamp(26px, 4vw, 44px); color: #fff; }

/* ===== 特性列表（对比/流程用） ===== */
.feature { display: grid; grid-template-columns: 92px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); align-items: flex-start; }
.feature:last-child { border-bottom: none; }
.feature-no { font-family: var(--serif); font-size: 34px; font-weight: 500; color: var(--ink-faint); line-height: 1; }
.feature h3 { font-size: 19px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 6px; }
.feature p { font-size: 14.5px; color: var(--ink-mute); line-height: 1.8; max-width: 680px; }

/* ===== 时间轴（逐日行程） ===== */
.days { display: grid; grid-template-columns: 118px 36px 1fr; }
.day { display: contents; }
.day-line { text-align: right; padding: 2px 16px 0 0; }
.day-no { font-weight: 700; font-size: 13px; letter-spacing: .08em; color: var(--ink); }
.day-date { font-size: 12px; color: var(--ink-faint); margin-top: 3px; }
.day-axis { position: relative; display: flex; justify-content: center; }
.day-axis::before { content: ""; position: absolute; top: 8px; bottom: -14px; left: 50%; width: 1px; background: var(--line-strong); }
.day:last-child .day-axis::before { bottom: auto; height: 22px; }
.day-dot { position: relative; z-index: 1; width: 14px; height: 14px; margin-top: 6px; border-radius: 50%; background: var(--bg); border: 2px solid var(--gold); }
.day-card { background: var(--bg-soft); border-radius: var(--radius); padding: 24px 26px; margin-bottom: 24px; }
.day-card.hi { background: #fff; border: 1px solid var(--line); box-shadow: 0 12px 34px rgba(0,0,0,.05); }
.day-title { font-size: 19px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 3px; }
.day-place { font-size: 11.5px; letter-spacing: .1em; color: var(--gold); font-weight: 600; margin-bottom: 13px; text-transform: uppercase; }
.day-act { padding: 10px 0; border-bottom: 1px dashed var(--line-strong); font-size: 14px; }
.day-act:last-child { border-bottom: none; }
.day-act b { color: var(--ink); font-weight: 600; margin-right: 10px; font-size: 12.5px; white-space: nowrap; }
.day-act span { color: var(--ink-mute); line-height: 1.75; }

/* ===== 对比三栏 ===== */
.compare { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 20px; }
.c-col { border-radius: var(--radius-lg); padding: 34px 30px; }
.c-col.main { background: var(--ink); color: #fff; }
.c-col.main .c-title { color: #fff; }
.c-col.main .c-item { color: var(--white-70); border-color: rgba(255,255,255,.14); }
.c-col.main .c-item::before { background: var(--gold-soft); }
.c-col.side { background: var(--bg-soft); }
.c-title { font-size: 15px; font-weight: 700; margin-bottom: 22px; }
.c-item { display: flex; gap: 10px; padding: 9px 0; font-size: 13.5px; color: var(--ink-mute); border-bottom: 1px solid var(--line); align-items: flex-start; }
.c-item:last-child { border-bottom: none; }
.c-item::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--ink-faint); margin-top: 8px; flex-shrink: 0; }
.c-item.good { color: var(--ink); }
.c-item.good::before { background: var(--gold); }
.side .c-item::before { background: #d2d2d5; }

/* ===== 品牌 logo 动效 ===== */
.brand-logo .logo-img { animation: logoRise .9s var(--ease) both; }
@keyframes logoRise { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.brand-logo:hover .logo-img { transform: scale(1.02); transition: transform .3s var(--ease); }
.f-brand .logo-img { filter: brightness(0) invert(1); opacity: .9; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.72); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 52px; }
.f-brand .brand-cn { font-family: var(--serif); font-size: 24px; color: #fff; font-weight: 600; letter-spacing: .02em; }
.f-brand .dot { color: var(--gold-soft); }
.f-desc { margin-top: 14px; font-size: 13.5px; line-height: 1.9; max-width: 300px; color: rgba(255,255,255,.55); }
.footer-grid h4 { font-size: 12px; letter-spacing: .22em; color: var(--gold-soft); font-weight: 600; margin-bottom: 18px; text-transform: uppercase; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid li a { font-size: 14px; color: rgba(255,255,255,.68); transition: color .3s; }
.footer-grid li a:hover { color: #fff; }
.footer-base { border-top: 1px solid rgba(255,255,255,.12); padding: 22px 28px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12px; color: rgba(255,255,255,.42); }

/* ===== 吸底联系栏 ===== */
.contact-bar { position: sticky; bottom: 0; z-index: 90; background: rgba(16,16,18,.92); backdrop-filter: blur(14px); color: #fff; border-top: 1px solid rgba(255,255,255,.1); }
.cb-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 11px 28px; max-width: var(--container); margin: 0 auto; }
.cb-label { font-size: 11.5px; letter-spacing: .18em; color: var(--gold-soft); display: block; }
.cb-line { font-size: 12px; color: rgba(255,255,255,.6); }
.cb-actions { display: flex; gap: 10px; align-items: center; }
.cb-btn { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; padding: 9px 16px; border-radius: 100px; transition: all .3s var(--ease); white-space: nowrap; }
.cb-btn b { font-weight: 600; }
.cb-call { background: rgba(255,255,255,.08); color: #fff; }
.cb-call:hover { background: rgba(255,255,255,.16); }
.cb-primary { background: var(--gold); color: #fff; font-weight: 600; }
.cb-primary:hover { background: #a97a33; }

/* ===== 滚动入场 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 语言框架占位页 ===== */
.shell { min-height: 78vh; display: flex; align-items: center; justify-content: center; padding: 90px 24px; }
.shell-card { max-width: 680px; text-align: center; }
.shell-card h1 { font-weight: 700; letter-spacing: -.01em; font-size: clamp(30px, 4.4vw, 46px); margin: 18px 0; line-height: 1.2; }
.shell-card p { color: var(--ink-mute); font-size: 16px; line-height: 1.9; margin-bottom: 34px; }
.shell-langs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 40px; padding-top: 34px; border-top: 1px solid var(--line); }
.shell-langs a { font-size: 13px; color: var(--ink-mute); padding: 8px 14px; border-radius: 100px; transition: all .2s; }
.shell-langs a:hover { background: var(--bg-soft); color: var(--ink); }
.shell-langs a.on { background: var(--ink); color: #fff; font-weight: 600; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .grid4 { grid-template-columns: repeat(2, 1fr); }
  .facts { grid-template-columns: repeat(2, 1fr); gap: 34px; }
  .compare { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 15px; }
  .container { padding: 0 20px; }
  .nav, .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .nav { position: fixed; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 4px; background: var(--bg); padding: 14px 20px 22px; border-bottom: 1px solid var(--line); box-shadow: 0 18px 40px rgba(0,0,0,.1); display: none; margin: 0; }
  .nav.open { display: flex; }
  .nav-link { padding: 13px 14px; font-size: 15px; }
  .lang-menu { position: fixed; top: 68px; right: 12px; left: 12px; min-width: 0; }
  .lang-menu .lang-item { justify-content: flex-start; gap: 10px; }
  .lang-menu .lang-item.on::after { margin-left: auto; }
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-base { flex-direction: column; }
  .cb-info { display: none; }
  .cb-inner { justify-content: center; }
  .hero-stats { gap: 20px 30px; }
  .hero-scroll { display: none; }
  .feature { grid-template-columns: 56px 1fr; gap: 16px; }
  .days { grid-template-columns: 78px 30px 1fr; }
  .day-act b { display: block; margin-bottom: 3px; }
}
@media (max-width: 520px) {
  .grid4 { grid-template-columns: 1fr; }
  .cb-btn .cb-name { display: none; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ===== CTA 包装 ===== */
.more { text-align: center; }

/* ===== 右下角浮动联系 ===== */
.fab-float { position: fixed; right: 20px; bottom: 92px; z-index: 95; display: flex; flex-direction: column; gap: 12px; }
.fab { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; box-shadow: 0 8px 24px rgba(0,0,0,.28); transition: all .3s var(--ease); }
.fab svg { display: block; }
.fab-call { background: var(--gold); }
.fab-call:hover { background: #a0782f; transform: translateY(-2px); }
.fab-chat { background: var(--ink); }
.fab-chat:hover { background: #000; transform: translateY(-2px); }
@media (max-width: 640px) { .fab-float { bottom: 78px; right: 16px; } .fab { width: 48px; height: 48px; } }