/* V5.1 — Hero · 终南山山门 */

.hero {
  overflow: hidden;
  background-color: var(--color-bg);
  padding-inline: var(--hero-padding);
  padding-block: calc(var(--hero-padding) + env(safe-area-inset-top, 0px))
    calc(var(--hero-padding) + env(safe-area-inset-bottom, 0px));
}

/* ── 五层背景场景 + Pack 01 高清图 ── */

.hero__scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Layer 1：终南山山门摄影背景（桌面 16:9） */
.hero__scene::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: var(--color-bg);
  background-image: url("../assets/backgrounds/hero/hero-bg-mystic-v2.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__layer {
  position: absolute;
  inset: 0;
}

/* 摄影背景下隐藏 SVG 山峦与松枝，避免重复 */
.hero__layer--mountain-far,
.hero__layer--mountain-mid,
.hero__layer--mountain-near,
.hero__pine {
  display: none;
}

/* Layer 2：宣纸肌理（叠在摄影上极淡） */
.hero__layer--paper {
  z-index: 1;
  background: url("../assets/svg/paper.svg") center / 480px repeat;
  opacity: 0.012;
}

/* Layer 3：山雾 */
.hero__layer--mist {
  z-index: 2;
  background: url("../assets/svg/yunwen.svg") center 35% / 120% auto no-repeat;
  opacity: 0.035;
  filter: blur(8px);
  animation: hero-mist var(--duration-hero-mist) ease-in-out infinite alternate;
}

/* Layer 4：星图呼吸 */
.hero__layer--stars {
  z-index: 2;
  background: url("../assets/svg/xingtu.svg") center / cover no-repeat;
  opacity: 0.025;
  animation: hero-stars-breathe var(--duration-hero-stars) ease-in-out infinite;
}

/* ── 内容区 ── */

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 28px;
  width: 100%;
  max-width: var(--content-max);
  min-height: calc(100dvh - var(--hero-padding) * 2 - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  text-align: left;
}

/* 左侧文字区压暗，保证可读 */
.hero__inner::before {
  content: "";
  position: absolute;
  inset: -32px -20px -32px -32px;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    rgba(16, 14, 12, 0.82) 0%,
    rgba(16, 14, 12, 0.48) 55%,
    transparent 100%
  );
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ── 入场淡入 ── */

.hero__enter {
  opacity: 0;
  animation: hero-enter 400ms var(--ease-out) forwards;
  animation-delay: calc(var(--enter-order, 0) * 200ms);
}

.hero__logo.hero__enter {
  animation-duration: var(--duration-hero-logo);
  animation-delay: 0ms;
}

/* ── Logo：守 / 一 + 朱砂印 ── */

.hero__logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.hero__logo-char {
  font-family: var(--font-serif);
  font-size: var(--hero-logo-size);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.hero__logo-seal {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
  color: var(--color-vermilion);
  border: 1.5px solid var(--color-vermilion);
  border-radius: 3px;
}

/* ── 副标题 ── */

.hero__motto {
  margin-top: -8px;
  font-family: var(--font-serif);
  font-size: var(--hero-motto-size);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: var(--hero-motto-tracking);
  color: var(--color-text-muted);
}

/* ── 主文案 ── */

.hero__title {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
}

.hero__title-line {
  font-size: clamp(1.625rem, 7vw, 2rem);
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

/* ── 说明 ── */

.hero__desc {
  max-width: 19em;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

/* ── 铜令牌 CTA ── */

.hero__cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  width: 100%;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 58px;
  padding: 14px 28px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.12em;
  color: var(--color-text);
  background: transparent;
  border: 2px solid var(--color-bronze);
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fade) var(--ease-out);
}

.hero__cta:hover {
  background-color: color-mix(in srgb, var(--color-bronze) 28%, var(--color-bg));
}

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

.hero__cta-note {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.04em;
  text-align: center;
  color: var(--color-text-muted);
}

/* ── 底部继续 ── */

.hero__scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--font-serif);
  animation: hero-scroll-pulse 3s ease-in-out infinite;
}

.hero__scroll-arrow {
  font-size: 14px;
  line-height: 1;
  color: var(--color-text-muted);
}

.hero__scroll-text {
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.24em;
  color: var(--color-text-muted);
}

/* ── 移动端 375px · 9:16 竖图 ── */

@media (max-width: 768px) {
  .hero__scene::before {
    background-image: url("../assets/backgrounds/hero/hero-bg-pavilion-mist-mobile.png");
    background-position: center top;
  }

  .hero__inner::before {
    inset: -24px -16px -24px -24px;
    background: linear-gradient(
      180deg,
      rgba(16, 14, 12, 0.78) 0%,
      rgba(16, 14, 12, 0.42) 42%,
      transparent 72%
    );
  }
}

@media (max-width: 430px) {
  .hero {
    padding-inline: var(--hero-padding);
  }

  .hero__logo-char {
    font-size: var(--hero-logo-size-mobile);
  }
}

@media (min-width: 431px) {
  .hero__inner {
    max-width: 420px;
  }

  .hero__cta-wrap {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__layer--mist {
    animation: none;
    filter: blur(6px);
  }
}

/* V34 · 移动端背景可见性：降低内容区黑色蒙层，不牺牲核心文字对比度 */
@media (max-width: 767px) {
  .hero__inner::before,
  .consultation__inner::before,
  .loading__inner::before,
  .result__inner::before,
  .unlock__inner::before {
    background: linear-gradient(180deg, rgba(12,10,8,.68) 0%, rgba(12,10,8,.48) 52%, rgba(12,10,8,.30) 100%);
  }
  .hero__scene::before,
  .consultation__scene::before,
  .loading__scene::before { filter: brightness(1.08) saturate(1.06); }
}