/* =========================================================
   P站视频 · 每一帧皆是态度
   设计系统：Cinematic Paper Cut / 电影纸张冲切
   浅色基底 + 珊瑚橙×水青 非传统撞色
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  --paper: #f8f5ee;
  --paper-deep: #efe9de;
  --coral: #ff6f5e;
  --coral-soft: #ffd2c7;
  --teal: #0ba39b;
  --teal-soft: #d7f0ec;
  --ink: #24474a;
  --ink-deep: #163a3e;
  --sand: #eae3d5;
  --white: #fffcf8;
  --success-check: rgba(11, 163, 155, 0.85);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans SC', system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
  line-height: 1.7;
  letter-spacing: 0.01em;
}

/* 全屏漂浮标记 — 电影画面编号 */
body::after {
  content: 'A F R A M E · 一帧一态度';
  position: fixed;
  bottom: 18px;
  right: -42px;
  transform: rotate(-90deg);
  z-index: 2000;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(11, 163, 155, 0.35);
  background: rgba(255, 252, 248, 0.85);
  padding: 8px 60px 4px 66px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(11, 163, 155, 0.18);
  border-radius: 40px 40px 0 0;
  pointer-events: none;
}

::selection {
  background: var(--coral);
  color: #fff;
}

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

a {
  color: inherit;
}

/* ---------- 核心布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.section {
  padding: 96px 0;
  position: relative;
}

/* 节数标签 微妙的电影打孔视觉 */
.section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 6%;
  width: 110px;
  height: 22px;
  opacity: 0.5;
  background-image: radial-gradient(circle at center, var(--coral) 2px, transparent 3px);
  background-size: 22px 22px;
  background-position: center;
  z-index: 1;
}

.section:nth-child(even) {
  background: var(--paper-deep);
}

.section::after {
  content: '';
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: radial-gradient(circle at 98% 12%, rgba(255, 111, 94, 0.055), transparent 28%),
              radial-gradient(circle at 4% 88%, rgba(11, 163, 155, 0.05), transparent 26%);
  pointer-events: none;
  z-index: 0;
}

/* ---------- 导航 — 固定顶部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(248, 245, 238, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: none;
  box-shadow: 0 1px 0 rgba(11, 163, 155, 0.08), 0 10px 40px -18px rgba(36, 71, 74, 0.2);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--coral) 0%, #ffbe5c 30%, var(--teal) 70%, transparent 100%);
  z-index: 1001;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--ink-deep);
  letter-spacing: -0.04em;
  position: relative;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px 12px 12px 3px;
  background: linear-gradient(135deg, var(--teal), #0b7e7a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #fff;
  box-shadow: 0 8px 18px -6px rgba(11, 163, 155, 0.4);
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: -6px;
  width: 18px;
  height: 18px;
  background: var(--coral);
  border-radius: 50%;
  border: 3px solid var(--paper);
}

.logo span:nth-child(2) em {
  font-style: normal;
  color: var(--coral);
}

.logo small {
  display: block;
  font-size: 0.5rem;
  font-weight: 500;
  letter-spacing: 0.4em;
  margin-top: -4px;
  color: rgba(36, 71, 74, 0.55);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding: 6px 2px;
  transition: color 0.25s ease, letter-spacing 0.25s ease;
  letter-spacing: 0.02em;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--coral), var(--teal));
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav a:not(.nav-cta):hover {
  color: var(--coral);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 20px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, #ff7a5c 0%, #ff5f62 100%);
  box-shadow: 0 6px 16px -6px rgba(255, 111, 94, 0.5);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  letter-spacing: 0.02em;
}

.nav-cta:hover {
  transform: translateY(-2px) rotate(-2deg);
  box-shadow: 0 12px 24px -8px rgba(255, 111, 94, 0.55);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: rgba(11, 163, 155, 0.08);
  border: 1.5px solid rgba(11, 163, 155, 0.2);
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.6rem;
  color: var(--teal);
}

/* ---------- 首页 Hero ---------- */
.hero {
  min-height: 88vh;
  padding-top: 172px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(105deg, rgba(255, 255, 255, 0.25), transparent 60%),
    radial-gradient(ellipse at 20% 10%, rgba(255, 111, 94, 0.13) 0%, transparent 40%),
    radial-gradient(ellipse at 90% 40%, rgba(11, 163, 155, 0.12) 0%, transparent 42%),
    var(--paper);
}

.hero::before {
  content: '';
  position: absolute;
  width: 46%;
  height: 100%;
  top: 0;
  right: -5%;
  background-image: 
    repeating-linear-gradient(0deg, rgba(11, 163, 155, 0.06) 1px, transparent 2px);
  opacity: 0.8;
  pointer-events: none;
}

.hero::after {
  content: '“每一次播放，都是一次剪辑态度”';
  position: absolute;
  bottom: 70px;
  right: 26px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  writing-mode: vertical-rl;
  color: rgba(36, 71, 74, 0.28);
  border-right: 1px solid rgba(36, 71, 74, 0.1);
  padding-right: 12px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 72px;
  align-items: center;
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 5;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 6px 16px 6px 12px;
  border-radius: 80px;
  background: var(--white);
  border: 1px solid rgba(11, 163, 155, 0.16);
  color: var(--teal);
  box-shadow: 0 8px 16px -12px rgba(36, 71, 74, 0.3);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 10px 0 0 rgba(11, 163, 155, 0.9);
}

.hero h1 {
  font-family: 'Noto Sans SC', system-ui, sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.055em;
  color: var(--ink-deep);
  margin-bottom: 28px;
}

.hero h1::after {
  content: '';
  display: block;
  width: 96px;
  height: 8px;
  margin-top: 24px;
  background: linear-gradient(90deg, var(--coral), var(--teal));
  border-radius: 20px;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.68;
  max-width: 500px;
  margin-bottom: 38px;
  letter-spacing: 0.01em;
  border-left: 3px solid var(--coral);
  padding-left: 18px;
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 32px 72px -32px rgba(36, 71, 74, 0.28);
  transform: rotate(2deg);
  border: 1px solid rgba(255, 255, 255, 0.7);
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 163, 155, 0.15), var(--coral));
  opacity: 0.12;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.hero-image::after {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 84px;
  height: 84px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--coral);
  z-index: 3;
  box-shadow: 0 2px 28px rgba(255, 111, 94, 0.6);
  transition: transform 0.3s;
}

.hero-image:hover::after {
  transform: translate(-50%, -50%) scale(1.12);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.28s ease;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, transparent 50%, rgba(255, 255, 255, 0.3) 50%, transparent 60%);
  background-size: 250% 100%;
  transition: background-position 0.4s;
  pointer-events: none;
}

.btn:hover::after {
  background-position: 100% 0;
}

.btn-primary {
  background: linear-gradient(135deg, var(--coral) 0%, #f64a45 100%);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-3px) skew(0deg);
  box-shadow: 0 14px 36px -14px rgba(255, 111, 94, 0.65);
}

.btn-outline {
  background: rgba(255, 252, 248, 0.7);
  border: 2px solid var(--teal);
  color: var(--teal);
  backdrop-filter: blur(6px);
}

.btn-outline:hover {
  background: var(--teal);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -18px rgba(11, 163, 155, 0.75);
}

/* ---------- 标签 + 标题 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--coral);
  margin-bottom: 14px;
  text-transform: uppercase;
  background: rgba(255, 111, 94, 0.08);
  padding: 5px 16px;
  border-radius: 40px;
  border: 1px solid rgba(255, 111, 94, 0.18);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.18;
  color: var(--ink-deep);
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}

.section-desc {
  max-width: 600px;
  color: var(--ink);
  opacity: 0.62;
  margin-bottom: 44px;
  font-weight: 400;
  font-size: 1rem;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  position: relative;
  z-index: 2;
}

.category-card {
  border-radius: 8px 28px 8px 28px;
  padding: 32px 28px;
  background: var(--white);
  border: 1.5px solid rgba(36, 71, 74, 0.06);
  box-shadow: 0 8px 26px -14px rgba(36, 71, 74, 0.12);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s, border-radius 0.3s;
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(11, 163, 155, 0.14), transparent 70%);
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
}

.category-card:nth-child(odd) {
  background: linear-gradient(140deg, rgba(255,210,199,0.4), var(--white) 40%);
}

.category-card:nth-child(even) {
  background: linear-gradient(140deg, rgba(215,240,236,0.5), var(--white) 40%);
}

.category-card:hover {
  transform: translateY(-8px) rotate(0.6deg);
  box-shadow: 0 30px 44px -24px rgba(36, 71, 74, 0.28);
  border-radius: 28px 8px 28px 8px;
}

.category-card:hover::after {
  opacity: 1;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px 16px 16px 4px;
  background: linear-gradient(145deg, var(--coral), #ffb16b);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: #fff;
  box-shadow: 0 10px 16px -8px rgba(255, 111, 94, 0.5);
}

.category-card:nth-child(even) .card-icon {
  background: linear-gradient(145deg, var(--teal), #0bd1c6);
  box-shadow: 0 10px 16px -8px rgba(11, 163, 155, 0.45);
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--coral);
  border-bottom: 2px dotted var(--coral);
  padding-bottom: 4px;
  transition: border-color 0.2s;
}

.card-link:hover {
  border-bottom-style: solid;
}

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.feature-image {
  border-radius: 80px 20px 80px 20px;
  overflow: hidden;
  box-shadow: 0 32px 60px -32px rgba(36, 71, 74, 0.3);
  position: relative;
}

.feature-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, transparent 70%, rgba(255, 111, 94, 0.2));
  z-index: 1;
}

.feature-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.6s;
}

.feature-image:hover img {
  transform: scale(1.04);
}

.feature-text {
  position: relative;
  z-index: 2;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  color: var(--ink-deep);
}

.feature-text h2 i {
  font-style: normal;
  color: var(--coral);
}

.feature-list {
  list-style: none;
  margin-top: 22px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--ink);
  font-size: 1rem;
}

.feature-list li::before {
  content: '';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  background: var(--teal-soft);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  color: var(--teal);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 8 20 16'%3E%3Cpath fill='%230ba39b' d='M16.7 3.3 8 12.7l-4.1-4.3-2.6 2.5L8 18l11.3-12.2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px;
  border: 0;
}

/* ---------- 数据条 ---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
  position: relative;
  z-index: 2;
}

.stat-item {
  padding: 30px 16px;
  border-radius: 30px 8px 8px 8px;
  background: var(--white);
  border: 0;
  text-align: center;
  box-shadow: 0 6px 30px -18px rgba(36, 71, 74, 0.8);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}

.stat-item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 6px;
  width: 100%;
  background: linear-gradient(90deg, var(--coral), var(--teal));
  opacity: 0;
  transition: opacity 0.3s;
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px -20px rgba(36, 71, 74, 0.4);
}

.stat-item:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--ink-deep);
  line-height: 1.1;
  font-family: 'Noto Sans SC', system-ui, sans-serif;
}

.stat-number[data-deco="true"]::after {
  content: '+';
  color: var(--coral);
  font-size: 0.7em;
  vertical-align: 0.4em;
  margin-left: 4px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--ink);
  opacity: 0.52;
  margin-top: 8px;
  letter-spacing: 0.12em;
  font-weight: 500;
}

/* ---------- 内容墙 ---------- */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
  position: relative;
  z-index: 2;
}

.content-wall-item {
  border-radius: 8px 24px 8px 24px;
  overflow: hidden;
  background: var(--white);
  border: 0;
  box-shadow: 0 8px 28px -18px rgba(36, 71, 74, 0.4);
  position: relative;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s;
}

.content-wall-item::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--coral) 0%, var(--teal) 100%);
  z-index: 5;
  opacity: 0;
  transition: opacity 0.3s;
}

.content-wall-item:hover {
  transform: translateY(-8px) rotate(0.3deg);
  box-shadow: 0 26px 52px -24px rgba(36, 71, 74, 0.25);
}

.content-wall-item:hover::before {
  opacity: 1;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.content-wall-item:hover img {
  transform: scale(1.07);
}

.content-wall-body {
  padding: 22px;
  background: var(--white);
  position: relative;
}

.content-wall-body::before {
  content: attr(data-duration);
  position: absolute;
  top: 0;
  right: 0;
 background: var(--coral-soft);
  font-size: 0.7rem;
  padding: 4px 14px;
  border-radius: 0 0 0 8px;
  color: #c93c28;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 40px auto 0;
  display: grid;
  gap: 14px;
  position: relative;
  z-index: 2;
}

.faq-item {
  background: var(--white);
  border-radius: 4px 20px 4px 20px;
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 4px 14px -6px rgba(36, 71, 74, 0.1);
  border: 1px solid rgba(36, 71, 74, 0.04);
  transition: box-shadow 0.3s, background 0.3s;
}

.faq-item:hover {
  box-shadow: 0 12px 34px -16px rgba(36, 71, 74, 0.45);
}

.faq-item.open {
  background: linear-gradient(135deg, rgba(215,240,236,0.6), rgba(255,252,248,0.9));
  border-left: 4px solid var(--teal);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink-deep);
  letter-spacing: -0.01em;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--coral);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: var(--teal);
}

.faq-item .faq-answer {
  padding: 0 26px 18px;
  display: none;
  color: var(--ink);
  opacity: 0.6;
  font-size: 0.95rem;
  line-height: 1.95;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ---------- CTA横幅 ---------- */
.cta-banner {
  padding: 88px 24px;
  text-align: center;
  border-radius: 80px 20px 80px 20px;
  background: linear-gradient(115deg, #ff7f5c 0%, #ff6c5e 40%, #f7766f 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 28px 72px -20px rgba(255, 111, 94, 0.45);
  z-index: 2;
}

.cta-banner::before {
  content: 'PLAY ●';
  position: absolute;
  font-size: 6rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.08);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  font-family: monospace;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 140%;
  height: 60px;
  bottom: -50px;
  left: -10%;
  background: repeating-linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.08) 0px,
    rgba(255, 255, 255, 0.08) 10px,
    transparent 10px,
    transparent 16px
  );
  transform: rotate(-4deg);
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.04em;
  margin-bottom: 16px;
}

.cta-banner h2::after {
  content: '';
  display: block;
  width: 52px;
  height: 5px;
  background: rgba(255, 255, 255, 0.7);
  margin: 20px auto 0;
  border-radius: 8px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #f85a4a;
  border: 0;
  box-shadow: none;
  margin-top: 20px;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 34px -14px rgba(36, 71, 74, 0.7);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 72px 0 24px;
  background: var(--teal-soft);
  position: relative;
  z-index: 2;
  margin-top: -24px;
  background: linear-gradient(
    165deg,
    #e9f5f2 0%,
    #d8efed 60%,
    #f3ece1 100%
  );
}

.site-footer .container {
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
}

.footer-brand {
  padding-right: 20px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  font-weight: 900;
  font-size: 1.3rem;
}

.footer-brand .logo-icon {
  width: 32px;
  height: 32px;
  font-size: 0.7rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--ink);
  opacity: 0.65;
}

.footer-brand p strong {
  display: block;
  font-size: 1rem;
  opacity: 1;
  color: var(--teal);
  margin-bottom: 6px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col::before {
  content: attr(data-footer-heading);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--teal);
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(11, 163, 155, 0.3);
}

.footer-col a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  opacity: 0.7;
  transition: all 0.2s;
  padding: 2px 0;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--coral);
  transform: translateX(6px);
}

.footer-bottom {
  border-top: 1px solid rgba(11, 163, 155, 0.2);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink);
  opacity: 0.5;
  letter-spacing: 0.05em;
}

/* ---------- 工具类 ---------- */
.text-accent {
  color: var(--coral);
  font-weight: 900;
}

.text-center {
  text-align: center;
}

.seo-description {
  max-width: 640px;
  margin: 0 auto 48px;
  color: var(--ink);
  opacity: 0.6;
  font-size: 1rem;
  line-height: 1.9;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section {
    padding: 72px 0;
  }

  .hero .container {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero::after {
    display: none;
  }

  .feature-block {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }

  .feature-block {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .site-footer .container {
    padding-bottom: 20px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    gap: 6px;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    background: rgba(248, 245, 238, 0.98);
    padding: 20px 24px;
    border-bottom: 1px solid rgba(11, 163, 155, 0.12);
    box-shadow: 0 30px 40px -30px rgba(36, 71, 74, 0.2);
  }

  .main-nav.open li {
    width: 100%;
  }

  .main-nav.open a {
    display: block;
    padding: 12px 4px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(36, 71, 74, 0.06);
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .hero {
    padding-top: 120px;
    min-height: auto;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .hero-image img {
    height: 320px;
  }

  .section-label {
    font-size: 0.68rem;
  }

  body::after {
    display: none;
  }

  .content-wall-item img {
    height: 180px;
  }

  .cta-banner {
    padding: 60px 20px;
    border-radius: 32px 10px 32px 10px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .section {
    padding: 56px 0;
  }

  .feature-block {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .feature-image img {
    height: 240px;
  }
}