/* 盐城车友会 · 官网首页静态版
   视觉方向：海边电影感（海盐蓝 + 落日橙 + 米白） */

:root {
  --sea: #0F2E3D;
  --sea-deep: #081C26;
  --sea-deeper: #06151C;
  --sunset: #F2764B;
  --sunset-soft: #F4A582;
  --sunset-ink: #A84424;
  --cream: #F2F7FB;
  --cream-dark: #DFE9F1;
  --ink: #0B1A22;
  --muted: #5C6C77;
  --cyan: #2ED3E8;
  --cyan-soft: rgba(46, 211, 232, 0.16);
  --line: rgba(11, 26, 34, 0.1);
  --line-light: rgba(247, 243, 236, 0.14);
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --container: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

h1, h2, h3, blockquote, p {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

img.is-broken {
  opacity: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--sunset);
  color: #180F0A;
}

:focus-visible {
  outline: 2px solid var(--sunset);
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--cream);
  color: var(--sea);
  font-size: 13px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 通用 ---------- */

.section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--sunset-ink);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
}

.section-kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.8;
}

h2 {
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 999px;
  font-size: 14px;
  letter-spacing: 0.03em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.35s var(--ease), background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary {
  background: var(--sunset);
  color: #180F0A;
  font-weight: 600;
}

.btn-primary:hover {
  background: #FF8B60;
  box-shadow: 0 12px 30px rgba(242, 118, 75, 0.25);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: rgba(247, 243, 236, 0.36);
  color: var(--cream);
}

.btn-ghost:hover {
  background: rgba(247, 243, 236, 0.1);
  transform: translateY(-2px);
}

.btn-small {
  padding: 10px 20px;
  font-size: 12.5px;
}

.link-more {
  flex: none;
  padding-bottom: 5px;
  border-bottom: 1px solid rgba(242, 118, 75, 0.45);
  color: var(--sunset-soft);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.link-more:hover {
  color: var(--cream);
  border-color: var(--cream);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-head h2 {
  max-width: 760px;
}

/* 滚动淡入：仅在 JS 可用时隐藏，保证爬虫和无 JS 环境能读到内容 */
.js .reveal {
  opacity: 0;
  translate: 0 26px;
}

.js .reveal.is-in {
  animation: revealUp 0.9s var(--ease) forwards;
}

@keyframes revealUp {
  to {
    opacity: 1;
    translate: 0 0;
  }
}

.nowrap {
  white-space: nowrap;
}

/* ---------- 顶部导航 ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  padding: 20px 0;
  color: var(--cream);
  transition: padding 0.35s ease, background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  padding: 11px 0;
  background: rgba(8, 28, 38, 0.9);
  border-bottom-color: rgba(247, 243, 236, 0.08);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--cream);
}

.brand-mark {
  flex: none;
  width: 32px;
  height: 32px;
}

.brand-text strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.brand-text small {
  display: block;
  margin-top: 2px;
  font-size: 8px;
  letter-spacing: 0.22em;
  opacity: 0.55;
}

.nav-desktop {
  display: flex;
  gap: 32px;
  margin-left: auto;
  color: rgba(247, 243, 236, 0.78);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.nav-desktop a {
  position: relative;
  padding: 6px 0;
  transition: color 0.3s ease;
}

.nav-desktop a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--sunset);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}

.nav-desktop a:hover {
  color: var(--cream);
}

.nav-desktop a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta {
  flex: none;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid rgba(247, 243, 236, 0.28);
  border-radius: 50%;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--cream);
  transition: transform 0.35s var(--ease), opacity 0.3s ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.25px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  flex-direction: column;
  padding: 110px 24px 36px;
  background: var(--sea-deep);
  color: var(--cream);
  visibility: hidden;
  transform: translateY(-100%);
  transition: transform 0.55s var(--ease), visibility 0.55s;
}

.mobile-menu.is-open {
  visibility: visible;
  transform: none;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu nav a {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 8vw, 2.4rem);
  letter-spacing: 0.02em;
}

.mobile-menu-note {
  margin-top: auto;
  color: rgba(247, 243, 236, 0.55);
  font-size: 11.5px;
  letter-spacing: 0.12em;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  padding: 150px 0 96px;
  overflow: hidden;
  color: var(--cream);
  background: var(--sea-deep);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media picture {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: kenburns 26s var(--ease) forwards;
}

@keyframes kenburns {
  from {
    transform: scale(1.09) translate3d(0, 1.5%, 0);
  }
  to {
    transform: scale(1) translate3d(0, 0, 0);
  }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(6, 20, 27, 0.64) 0%, rgba(6, 20, 27, 0.24) 52%, rgba(6, 20, 27, 0) 78%),
    linear-gradient(180deg, rgba(6, 20, 27, 0.58) 0%, rgba(6, 20, 27, 0.12) 32%, rgba(6, 20, 27, 0.6) 66%, rgba(6, 20, 27, 0.95) 100%),
    radial-gradient(58% 50% at 76% 26%, rgba(242, 118, 75, 0.24), transparent 70%);
}

#fireflies {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 980px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--sunset-soft);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 36px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}

.hero h1 {
  font-weight: inherit;
}

.h1-brand {
  display: block;
  margin-bottom: 18px;
  color: rgba(247, 243, 236, 0.62);
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.3em;
}

.h1-line {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2.7rem, 6.6vw, 5.8rem);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.h1-accent {
  color: var(--sunset-soft);
}

.hero-sub {
  max-width: 570px;
  margin-top: 26px;
  color: rgba(247, 243, 236, 0.8);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-note {
  margin-top: 26px;
  color: rgba(247, 243, 236, 0.52);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}

.hero-scroll {
  position: absolute;
  right: 48px;
  bottom: 40px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: rgba(247, 243, 236, 0.5);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  writing-mode: vertical-rl;
}

.hero-scroll i {
  display: block;
  width: 1px;
  height: 46px;
  background: linear-gradient(180deg, rgba(247, 243, 236, 0.1), rgba(247, 243, 236, 0.8));
  animation: scrollLine 2.4s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(0.35); opacity: 0.4; }
  50% { transform: scaleY(1); opacity: 1; }
}

.hero-coord {
  position: absolute;
  left: 48px;
  bottom: 40px;
  z-index: 3;
  color: rgba(247, 243, 236, 0.55);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
}

/* 颗粒质感 */
.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px 160px;
  mix-blend-mode: overlay;
}

/* ---------- 三个“不” ---------- */

.beliefs {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--cream);
}

.beliefs-title {
  max-width: 760px;
}

.beliefs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(48px, 6vw, 76px);
  border-top: 1px solid var(--line);
}

.beliefs-grid article {
  padding: 30px 36px 0 0;
}

.beliefs-grid article + article {
  padding-left: 36px;
  border-left: 1px solid var(--line);
}

.belief-no {
  display: block;
  margin-bottom: 22px;
  color: var(--sunset-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.beliefs-grid h3 {
  margin-bottom: 12px;
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 600;
  line-height: 1.4;
}

.beliefs-grid p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.beliefs-note {
  margin-top: clamp(48px, 6vw, 72px);
  padding-left: 20px;
  border-left: 3px solid var(--sunset);
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.8;
}

/* ---------- 活动 ---------- */

.events {
  padding: clamp(80px, 10vw, 132px) 0;
  background: var(--sea-deep);
  color: var(--cream);
}

.events .section-kicker {
  color: var(--sunset-soft);
}

.events h2 {
  color: var(--cream);
}

.event-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2.2vw, 28px);
}

.event-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: rgba(247, 243, 236, 0.045);
  border: 1px solid var(--line-light);
  color: var(--cream);
  transition: transform 0.5s var(--ease), background 0.35s ease, border-color 0.35s ease;
}

.event-card:hover {
  background: rgba(247, 243, 236, 0.07);
  border-color: rgba(247, 243, 236, 0.24);
  transform: translateY(-4px);
}

.event-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #183844, #0B1F29);
}

.event-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.event-card:hover .event-media img {
  transform: scale(1.045);
}

.date-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 48px;
  padding: 8px 10px;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.05;
}

.date-badge b {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
}

.date-badge small {
  margin-top: 4px;
  font-size: 9px;
  letter-spacing: 0.12em;
}

.event-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: clamp(16px, 2vw, 24px);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tags span {
  padding: 3px 8px;
  border: 1px solid rgba(247, 243, 236, 0.22);
  color: rgba(247, 243, 236, 0.75);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.event-body h3 {
  margin-bottom: 10px;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 1.7vw, 1.45rem);
  font-weight: 600;
  line-height: 1.42;
}

.event-meta {
  color: rgba(247, 243, 236, 0.55);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.event-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(247, 243, 236, 0.1);
}

.spots {
  color: var(--sunset-soft);
  font-size: 12px;
}

.spots-open {
  color: #9FD3B6;
}

.arrow {
  font-size: 16px;
  transition: transform 0.35s var(--ease);
}

.event-card:hover .arrow {
  transform: translateX(4px);
}

.events-note {
  margin-top: clamp(28px, 4vw, 40px);
  color: rgba(247, 243, 236, 0.58);
  font-size: 12.5px;
  line-height: 1.8;
}

/* ---------- 路线 ---------- */

.routes {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--cream);
}

.routes .link-more {
  color: var(--sea);
  border-bottom-color: rgba(15, 46, 61, 0.28);
}

.routes .link-more:hover {
  color: var(--sunset);
  border-bottom-color: var(--sunset);
}

.route-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.4vw, 32px);
  row-gap: clamp(32px, 4vw, 48px);
}

.route-card {
  display: block;
  color: var(--ink);
}

.route-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 3px;
  background: linear-gradient(135deg, #D9D2C4, #B9C4C4);
}

.route-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease);
}

.route-card:hover .route-media img {
  transform: scale(1.05);
}

.scene-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 9px;
  background: rgba(247, 243, 236, 0.92);
  color: var(--sea);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.route-no {
  position: absolute;
  right: 12px;
  bottom: 10px;
  color: rgba(247, 243, 236, 0.82);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.route-body {
  padding-top: 16px;
}

.route-meta {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}

.route-body h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-weight: 600;
  line-height: 1.45;
  transition: color 0.3s ease;
}

.route-card:hover h3 {
  color: var(--sunset-ink);
}

/* ---------- 车友故事 ---------- */

.stories {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--sea);
  color: var(--cream);
}

.stories .section-kicker {
  color: var(--sunset-soft);
}

.stories h2 {
  color: var(--cream);
}

.story-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(40px, 5vw, 64px);
}

.story-media {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: 3px;
  background: linear-gradient(135deg, #1B4553, #0A2029);
}

.story-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}

.story-card:hover .story-media img {
  transform: scale(1.03);
}

.story-card blockquote {
  margin: 20px 0 10px;
  color: var(--cream);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: 1.8;
}

.story-name {
  color: var(--sunset-soft);
  font-size: 11.5px;
  letter-spacing: 0.08em;
}

.story-feature {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: clamp(40px, 5vw, 64px);
  padding: 20px 0;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
  color: var(--cream);
}

.story-feature span {
  flex: none;
  color: rgba(247, 243, 236, 0.6);
  font-size: 10.5px;
  letter-spacing: 0.16em;
}

.story-feature strong {
  flex: 1;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  font-weight: 500;
  transition: color 0.3s ease;
}

.story-feature i {
  font-style: normal;
  font-size: 18px;
  transition: transform 0.35s var(--ease);
}

.story-feature:hover strong {
  color: var(--sunset-soft);
}

.story-feature:hover i {
  transform: translateX(5px);
}

/* ---------- 盐城地图 ---------- */

.places {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--cream);
}

.places-intro {
  max-width: 620px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.place-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  max-width: 1020px;
  margin-top: clamp(32px, 4vw, 48px);
}

.place-list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--sea);
  font-size: 13.5px;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease);
}

.place-list a span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.place-list a:hover {
  background: var(--sea);
  border-color: var(--sea);
  color: var(--cream);
  transform: translateY(-2px);
}

.place-list a:hover span {
  color: var(--sunset-soft);
}

/* ---------- 新人三步 ---------- */

.start {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--cream-dark);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(40px, 5vw, 64px);
}

.steps li {
  padding-top: 24px;
  border-top: 1px solid rgba(15, 46, 61, 0.18);
}

.step-no {
  display: block;
  margin-bottom: 18px;
  color: var(--sunset-ink);
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  line-height: 1;
}

.steps h3 {
  margin-bottom: 10px;
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 1.8vw, 1.45rem);
  font-weight: 600;
}

.steps p {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

.start-cta {
  margin-top: clamp(36px, 4vw, 52px);
}

/* ---------- 常见问题 ---------- */

.faq {
  padding: clamp(88px, 11vw, 150px) 0;
  background: var(--cream);
}

.faq-list {
  max-width: 860px;
  margin-top: clamp(32px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex: none;
  color: var(--sunset-ink);
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s var(--ease);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  max-width: 720px;
  padding: 0 48px 24px 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

/* ---------- 加入 ---------- */

.join {
  position: relative;
  padding: clamp(100px, 13vw, 170px) 0;
  overflow: hidden;
  color: var(--cream);
  background: var(--sea-deep);
}

.join-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

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

.join-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(6, 20, 27, 0.94) 0%, rgba(6, 20, 27, 0.78) 52%, rgba(6, 20, 27, 0.52) 100%),
    linear-gradient(0deg, rgba(6, 20, 27, 0.8), rgba(6, 20, 27, 0.2));
}

.join-inner {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 60px;
}

.join-copy {
  max-width: 620px;
}

.join .section-kicker {
  color: var(--sunset-soft);
}

.join h2 {
  margin-bottom: 22px;
  color: var(--cream);
  font-size: clamp(2.6rem, 5.6vw, 4.6rem);
  line-height: 1.12;
}

.join-copy > p:not(.section-kicker) {
  max-width: 480px;
  color: rgba(247, 243, 236, 0.8);
  font-size: 15px;
  line-height: 1.9;
}

.join-rules {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 32px;
}

.join-rules li {
  padding: 6px 12px;
  border: 1px solid rgba(247, 243, 236, 0.24);
  color: rgba(247, 243, 236, 0.8);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.qr-card {
  justify-self: end;
  width: min(300px, 100%);
  padding: 18px 18px 16px;
  background: var(--cream);
  border-radius: 4px;
  color: var(--ink);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  transform: rotate(-1.5deg);
  transition: transform 0.45s var(--ease);
}

.qr-card:hover {
  transform: rotate(0deg) translateY(-3px);
}

.qr-box {
  padding: 10px;
  background: #fff;
  border: 1px solid rgba(26, 26, 26, 0.08);
}

.qr-box img,
.qr-box svg {
  display: block;
  width: 100%;
  height: auto;
}

.qr-title {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: center;
}

.qr-note {
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

/* ---------- 页脚 ---------- */

.site-footer {
  padding: 64px 0 28px;
  background: var(--sea-deeper);
  color: rgba(247, 243, 236, 0.62);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(247, 243, 236, 0.1);
}

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-brand p {
  color: rgba(247, 243, 236, 0.55);
  font-size: 12.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.footer-links a {
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--cream);
}

.footer-contact {
  font-size: 12.5px;
  line-height: 1.9;
}

.footer-contact a:hover {
  color: var(--cream);
}

.footer-note {
  color: rgba(247, 243, 236, 0.5);
  font-size: 11.5px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  color: rgba(247, 243, 236, 0.5);
  font-size: 11px;
}

.footer-bottom a {
  margin-left: 16px;
}

.footer-bottom a:hover {
  color: var(--cream);
}

/* ---------- 二维码弹窗与提示 ---------- */

.qr-dialog {
  width: min(340px, calc(100% - 40px));
  padding: 26px 24px 22px;
  border: 0;
  border-radius: 4px;
  background: var(--cream);
  color: var(--ink);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.45);
}

.qr-dialog::backdrop {
  background: rgba(4, 14, 19, 0.74);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.qr-dialog-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
  color: rgba(26, 26, 26, 0.5);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.qr-dialog-close:hover {
  color: var(--ink);
}

.qr-dialog-img {
  width: 100%;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--line);
}

.qr-dialog h3 {
  margin: 16px 0 6px;
  color: var(--sea);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
}

.qr-dialog-note {
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.7;
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  z-index: 130;
  max-width: calc(100% - 40px);
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(8, 28, 38, 0.96);
  color: var(--cream);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  text-align: center;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 14px);
  transition: opacity 0.3s ease, transform 0.4s var(--ease), visibility 0.3s;
}

.toast.is-show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* ---------- 响应式 ---------- */

@media (max-width: 1080px) {
  .nav-desktop {
    gap: 24px;
  }

  .hero-content {
    max-width: 820px;
  }

  .join-inner {
    gap: 40px;
  }
}

@media (max-width: 900px) {
  .nav-desktop,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-header {
    padding: 16px 0;
  }

  .site-header.is-scrolled {
    padding: 10px 0;
  }

  .hero {
    padding: 122px 0 80px;
  }

  .hero-scroll,
  .hero-coord {
    display: none;
  }

  .beliefs-grid {
    grid-template-columns: 1fr;
    border-top: none;
  }

  .beliefs-grid article {
    padding: 24px 0;
    border-top: 1px solid var(--line);
  }

  .beliefs-grid article + article {
    padding-left: 0;
    border-left: none;
  }

  .beliefs-grid article:first-child {
    padding-top: 0;
    border-top: none;
  }

  .route-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    row-gap: 32px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

  .steps li {
    padding: 24px 0 0;
  }

  .steps li:first-child {
    padding-top: 24px;
  }

  .join-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .qr-card {
    justify-self: start;
    width: 260px;
    transform: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .container {
    width: calc(100% - 36px);
  }

  .brand-text strong {
    font-size: 14.5px;
  }

  .brand-text small {
    display: none;
  }

  .brand-mark {
    width: 28px;
    height: 28px;
  }

  .hero {
    padding: 110px 0 64px;
  }

  .eyebrow {
    margin-bottom: 18px;
    font-size: 10px;
    letter-spacing: 0.22em;
  }

  .h1-brand {
    margin-bottom: 14px;
    font-size: 10px;
    letter-spacing: 0.24em;
  }

  .h1-line {
    font-size: clamp(2.15rem, 9.4vw, 3rem);
    line-height: 1.16;
  }

  .hero-sub {
    margin-top: 20px;
    font-size: 14px;
    line-height: 1.85;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 26px;
  }

  .hero-actions .btn {
    padding: 12px 18px;
    font-size: 13px;
  }

  .hero-note {
    margin-top: 20px;
    font-size: 10.5px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  h2 {
    font-size: 1.9rem;
  }

  .event-grid {
    gap: 10px;
  }

  .event-body {
    padding: 12px;
  }

  .event-body h3 {
    font-size: 0.98rem;
    line-height: 1.4;
  }

  .event-meta {
    font-size: 10.5px;
  }

  .tags {
    gap: 4px;
    margin-bottom: 8px;
  }

  .tags span {
    padding: 2px 6px;
    font-size: 9px;
  }

  .date-badge {
    top: 10px;
    left: 10px;
    min-width: 42px;
    padding: 6px 7px;
  }

  .date-badge b {
    font-size: 13px;
  }

  .date-badge small {
    font-size: 8px;
  }

  .event-foot {
    padding-top: 10px;
  }

  .spots {
    font-size: 10.5px;
  }

  .arrow {
    font-size: 14px;
  }

  .events-note {
    font-size: 11.5px;
  }

  .route-grid {
    gap: 12px;
    row-gap: 24px;
  }

  .route-body {
    padding-top: 12px;
  }

  .route-meta {
    font-size: 10px;
  }

  .route-body h3 {
    font-size: 0.95rem;
    line-height: 1.4;
  }

  .scene-tag {
    top: 8px;
    left: 8px;
    padding: 3px 7px;
    font-size: 9px;
  }

  .route-no {
    right: 8px;
    bottom: 6px;
    font-size: 9px;
  }

  .story-grid {
    gap: 12px;
  }

  .story-card blockquote {
    margin: 12px 0 8px;
    font-size: 0.92rem;
    line-height: 1.7;
  }

  .story-name {
    font-size: 9.5px;
    letter-spacing: 0.04em;
  }

  .story-feature {
    gap: 10px;
    padding: 16px 0;
  }

  .story-feature span {
    font-size: 9px;
    letter-spacing: 0.1em;
  }

  .story-feature strong {
    font-size: 0.95rem;
  }

  .place-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .place-list a {
    gap: 7px;
    padding: 8px 12px;
    font-size: 12px;
  }

  .places-intro {
    font-size: 14px;
  }

  .faq-item summary {
    padding: 18px 0;
    font-size: 1rem;
  }

  .faq-item p {
    padding: 0 28px 20px 0;
    font-size: 13.5px;
  }

  .join {
    padding: 88px 0;
  }

  .join h2 {
    font-size: 2.5rem;
  }

  .qr-card {
    width: 238px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }

  .footer-bottom a:first-child {
    margin-left: 0;
  }
}

@media (max-width: 360px) {
  .h1-line {
    font-size: 1.85rem;
  }

  .hero-actions .btn {
    padding: 11px 15px;
    font-size: 12.5px;
  }
}

/* ---------- 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    translate: none;
    animation: none;
  }

  #fireflies {
    display: none;
  }
}

/* ---------- 2026 视觉升级 ---------- */

body {
  background-color: #F5F8FC;
  background-image: radial-gradient(90% 60% at 50% 0%, #E9F1F8 0%, rgba(245, 248, 252, 0) 62%);
  background-repeat: no-repeat;
  background-attachment: fixed;
}

h2,
.h1-line,
.hero-title {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.btn-primary {
  background: linear-gradient(135deg, #FF9A6B 0%, #F2764B 58%, #E85F33 100%);
  box-shadow: 0 10px 26px -14px rgba(232, 95, 51, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #FFA87C 0%, #F88156 58%, #EF6A3E 100%);
  box-shadow: 0 16px 34px -14px rgba(232, 95, 51, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.05);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.site-header.is-scrolled {
  background: rgba(6, 20, 28, 0.84);
  border-bottom-color: rgba(46, 211, 232, 0.2);
  box-shadow: 0 14px 44px -28px rgba(2, 10, 15, 0.9);
}