/* ==========================================================================
   components.css — 版式构成与组件
   构成原则：非对称、大留白、每屏保留一个「破格」元素（呼吸光 / 竖排标题 / 描边跑马灯）
   ========================================================================== */

/* ==========================================================================
   1. 顶部导航
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-4) clamp(var(--space-4), 5vw, var(--space-7));
  transition: background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              backdrop-filter var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

/* 滚动后转为毛玻璃条，保证任何背景上的可读性 */
.site-header.is-stuck {
  background-color: var(--scrim-header);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--color-border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  flex-shrink: 0;
}

.brand__mark {
  width: 30px;
  height: 30px;
  color: var(--color-accent);
  filter: drop-shadow(0 0 10px rgba(109, 255, 171, 0.5));
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__cn {
  font-family: var(--font-display-cn);
  font-size: var(--fs-400);
  font-weight: var(--weight-bold);
  letter-spacing: 0.22em;
}

.brand__en {
  font-size: var(--fs-100);
  letter-spacing: var(--tracking-wide);
  color: var(--color-muted);
  text-transform: uppercase;
}

.nav {
  margin-left: auto;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: var(--fs-300);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-soft);
  transition: color var(--dur-fast) var(--ease-out);
}

/* 悬停：下划线从右往左扫过，而不是简单变亮 */
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 16px;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* 汉堡按钮：仅小屏出现 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* 抽屉菜单 */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-content: center;
  gap: var(--space-3);
  padding: var(--space-7) var(--space-5);
  background-color: var(--color-surface);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease-out),
              visibility var(--dur-base) var(--ease-out);
}

.nav-drawer.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-drawer__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-display-cn);
  font-size: var(--fs-700);
  font-weight: var(--weight-black);
  letter-spacing: 0.16em;
  color: var(--color-text);
  text-align: center;
  transition: color var(--dur-fast) var(--ease-out),
              letter-spacing var(--dur-base) var(--ease-out);
}

.nav-drawer__link:hover,
.nav-drawer__link:focus-visible {
  color: var(--color-accent);
  letter-spacing: 0.26em;
}

.nav-drawer__note {
  margin-top: var(--space-4);
  font-size: var(--fs-200);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-muted);
  text-align: center;
}

/* ==========================================================================
   2. 按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-5);
  font-size: var(--fs-300);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  border: 1px solid var(--color-border-firm);
  border-radius: var(--radius-pill);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}

/* 悬停：底色从下往上擦入，边框随之亮起 */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--color-accent);
  transform: translateY(101%);
  transition: transform var(--dur-base) var(--ease-out);
}

.btn:hover::before,
.btn:focus-visible::before {
  transform: translateY(0);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--color-bg-deep);
  border-color: var(--color-accent);
  box-shadow: var(--glow-strong);
}

.btn--solid {
  background: var(--color-accent);
  color: var(--color-bg-deep);
  border-color: var(--color-accent);
  font-weight: var(--weight-bold);
}

.btn--solid::before {
  background: var(--color-accent-soft);
}

.btn--solid:hover,
.btn--solid:focus-visible {
  box-shadow: var(--glow-strong);
}

.btn__arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--dur-base) var(--ease-out);
}

.btn:hover .btn__arrow,
.btn:focus-visible .btn__arrow {
  transform: translate(3px, -3px);
}

/* ==========================================================================
   3. 首屏 —— 主视觉 + 呼吸光缝 + 光屑
   ========================================================================== */
/* 首屏分为「图片区 + 信息条」两行：
   信息条永远在图片之外，不与海报自带的文案（驭浪寻道 / 三枚标记）打架。
   这也是首屏唯一允许出现的结构性承诺 —— 文字不压主视觉。 */
.hero {
  position: relative;
  /* 固定一屏高：避免在超高视口里主视觉被无限拉伸 */
  height: 100vh;
  height: 100svh;
  min-height: 620px;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  background-color: var(--color-bg-deep);
}

.hero__media {
  position: relative;
  overflow: hidden;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% center;
}

/* 压暗层：顶部保证导航可读，底部让图片与信息条自然衔接 */
.hero__vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(2, 18, 10, 0.78) 0%, rgba(2, 18, 10, 0) 22%),
    linear-gradient(0deg, rgba(2, 18, 10, 0.5) 0%, rgba(2, 18, 10, 0) 16%),
    radial-gradient(130% 90% at 50% 45%, rgba(1, 11, 6, 0) 45%, rgba(1, 11, 6, 0.5) 100%);
}

/* 记忆点：与海报裂缝同位的呼吸光，让静态主视觉「活着」 */
.hero__breathe {
  position: absolute;
  left: 61%;
  top: 50%;
  width: clamp(150px, 17vw, 280px);
  height: 78vh;
  transform: translate(-50%, -50%);
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(168, 255, 203, 0.5),
              rgba(109, 255, 171, 0.26) 45%, rgba(0, 196, 106, 0) 78%);
  filter: blur(18px);
  opacity: 0.55;
  animation: breathe 9s var(--ease-in-out) infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(0.94); }
  50%      { opacity: 0.86; transform: translate(-50%, -50%) scale(1.06); }
}

/* 光屑：沿裂缝缓慢上浮，纯装饰 */
.hero__particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero__particle {
  position: absolute;
  left: var(--x);
  bottom: -8px;
  width: var(--s);
  height: var(--s);
  border-radius: 50%;
  background: var(--color-accent-soft);
  box-shadow: 0 0 8px rgba(109, 255, 171, 0.85);
  opacity: 0;
  animation: drift var(--d) linear var(--delay) infinite;
}

@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) scale(0.5); opacity: 0; }
  12%  { opacity: var(--o); }
  80%  { opacity: var(--o); }
  100% { transform: translate3d(var(--dx), -82vh, 0) scale(1.1); opacity: 0; }
}

/* 信息条：深色独立一行，从图片色渐变沉降到页面底色 */
.hero__base {
  position: relative;
  z-index: 3;
  width: 100%;
  padding-block: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(4, 26, 18, 0.92), var(--color-bg-deep) 62%);
}

.hero__base-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.hero__title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.hero__title-cn {
  font-family: var(--font-display-cn);
  font-size: var(--fs-600);
  font-weight: var(--weight-black);
  letter-spacing: 0.2em;
  line-height: 1.1;
}

.hero__title-en {
  font-size: var(--fs-100);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-muted);
}

.hero__meta {
  margin-top: var(--space-2);
  font-size: var(--fs-300);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-soft);
}

.hero__scroll {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  font-size: var(--fs-100);
  letter-spacing: var(--tracking-wider);
  color: var(--color-muted);
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out);
}

.hero__scroll:hover {
  color: var(--color-accent);
}

.hero__scroll svg {
  width: 14px;
  height: 14px;
  animation: nudge 2.6s var(--ease-in-out) infinite;
}

@keyframes nudge {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50%      { transform: translateY(6px); opacity: 1; }
}

/* ==========================================================================
   4. 区块通用骨架
   ========================================================================== */
.section {
  position: relative;
  padding-block: clamp(var(--space-6), 12vh, var(--space-8));
  /* 固定顶栏约 76px，锚点跳转时留出呼吸位 */
  scroll-margin-top: 88px;
}

/* 每节左侧的竖排编号 —— 仪式感的来源，也充当章节锚点 */
.section__index {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  font-size: var(--fs-200);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-muted);
}

.section__index::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.section__title {
  font-family: var(--font-display-cn);
  font-size: var(--fs-700);
  font-weight: var(--weight-black);
  line-height: var(--lh-heading);
  letter-spacing: var(--tracking-tight);
}

/* ==========================================================================
   5. 理念 —— 非对称双栏，左栏竖排巨型中文
   ========================================================================== */
.creed {
  background:
    radial-gradient(80% 60% at 8% 0%, rgba(0, 196, 106, 0.1), transparent 62%),
    var(--color-bg);
}

.creed__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(var(--space-5), 8vw, var(--space-8));
  align-items: start;
}

.creed__lead {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* 竖排标题：直接呼应海报里竖排的「破界生光」 */
.creed__cn {
  writing-mode: vertical-rl;
  font-family: var(--font-display-cn);
  font-size: var(--fs-800);
  font-weight: var(--weight-black);
  line-height: 1;
  letter-spacing: 0.14em;
  padding-block: var(--space-2);
  background: linear-gradient(180deg, #ffffff 0%, var(--color-accent) 58%,
              var(--color-accent-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 26px rgba(109, 255, 171, 0.24));
}

.creed__latin {
  font-family: var(--font-display-latin);
  font-style: italic;
  font-weight: var(--weight-light);
  font-size: var(--fs-600);
  color: var(--color-accent);
  letter-spacing: 0.01em;
}

.creed__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding-top: var(--space-6);
}

.creed__en {
  max-width: 46ch;
  font-family: var(--font-display-latin);
  font-size: var(--fs-500);
  line-height: 1.85;
  color: var(--color-text-soft);
}

.creed__cn-text {
  max-width: 30ch;
  font-size: var(--fs-600);
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.creed__cn-text em {
  font-style: normal;
  color: var(--color-accent);
}

/* ==========================================================================
   6. 信条三支柱 —— 横行列表，不用卡片
   ========================================================================== */
.pillars {
  background:
    radial-gradient(72% 52% at 92% 8%, rgba(0, 196, 106, 0.09), transparent 62%),
    var(--color-bg);
}

.pillars__list {
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.pillar {
  position: relative;
  display: grid;
  grid-template-columns: 4rem 2.75rem minmax(13rem, 0.85fr) minmax(0, 1.15fr);
  align-items: center;
  gap: var(--space-4) var(--space-5);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

/* 悬停时从左擦入的极淡绿光 */
.pillar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(109, 255, 171, 0.11), transparent 68%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.pillar:hover::before,
.pillar:focus-within::before {
  opacity: 1;
}

.pillar__num {
  font-size: var(--fs-200);
  letter-spacing: var(--tracking-wide);
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.pillar__icon {
  width: 34px;
  height: 34px;
  color: var(--color-muted);
  transition: color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              filter var(--dur-base) var(--ease-out);
}

.pillar:hover .pillar__icon {
  color: var(--color-accent);
  transform: translateY(-3px);
  filter: drop-shadow(0 0 14px rgba(109, 255, 171, 0.6));
}

.pillar__name {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-display-cn);
  font-size: var(--fs-600);
  font-weight: var(--weight-bold);
  letter-spacing: 0.14em;
  line-height: 1.3;
}

.pillar__name span {
  font-family: var(--font-display-latin);
  font-style: italic;
  font-size: var(--fs-400);
  font-weight: var(--weight-light);
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.pillar__desc {
  max-width: 44ch;
  font-size: var(--fs-400);
  line-height: 1.85;
  color: var(--color-text-soft);
  transition: transform var(--dur-base) var(--ease-out);
}

.pillar:hover .pillar__desc {
  transform: translateX(8px);
}

/* ==========================================================================
   7. 描边跑马灯 —— 页面中段的一次破格
   ========================================================================== */
.marquee {
  overflow: hidden;
  padding-block: var(--space-5);
  border-block: 1px solid var(--color-border);
  background: var(--color-bg-deep);
}

.marquee__track {
  display: flex;
  gap: var(--space-6);
  width: max-content;
  animation: marquee 46s linear infinite;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

.marquee__group {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.marquee__word {
  font-family: var(--font-display-cn);
  font-size: var(--fs-700);
  font-weight: var(--weight-black);
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-border-firm);
}

/* 交错：描边字与实心强调字交替，形成节奏 */
.marquee__word--lit {
  color: var(--color-accent);
  -webkit-text-stroke: 0;
  opacity: 0.9;
}

.marquee__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-deep);
  flex-shrink: 0;
}

/* ==========================================================================
   8. 行动区 —— 中央光缝，呼应首屏
   ========================================================================== */
.cta {
  position: relative;
  overflow: hidden;
  text-align: center;
  background: var(--color-bg);
}

.cta__glow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(1000px, 130vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none;
  background: radial-gradient(circle, rgba(109, 255, 171, 0.18),
              rgba(0, 196, 106, 0.08) 42%, transparent 64%);
}

/* 竖直光缝：页面首屏的那道光在这里收束 */
.cta__seam {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(109, 255, 171, 0.5) 42%,
              rgba(109, 255, 171, 0.5) 58%, transparent);
}

.cta__seam::after {
  content: "";
  position: absolute;
  inset: 12% -22px;
  background: linear-gradient(180deg, transparent, rgba(109, 255, 171, 0.24), transparent);
  filter: blur(14px);
}

.cta__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

.cta__title {
  font-family: var(--font-display-cn);
  font-size: var(--fs-900);
  font-weight: var(--weight-black);
  /* 中文字形占满 em 框，行高不能压到 1 以下，否则上下行会咬在一起 */
  line-height: 1.06;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, #ffffff 22%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 40px rgba(109, 255, 171, 0.22));
}

.cta__desc {
  max-width: 34ch;
  font-size: var(--fs-400);
  line-height: 1.9;
  color: var(--color-text-soft);
}

.cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

/* ==========================================================================
   9. 页脚
   ========================================================================== */
.site-footer {
  padding-block: var(--space-6) var(--space-5);
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-footer__brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  font-family: var(--font-display-cn);
  font-size: var(--fs-500);
  font-weight: var(--weight-bold);
  letter-spacing: 0.18em;
}

.site-footer__brand span {
  font-family: var(--font-body);
  font-size: var(--fs-100);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-wide);
  color: var(--color-muted);
  text-transform: uppercase;
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--fs-200);
  color: var(--color-muted);
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__link:hover,
.site-footer__link:focus-visible {
  color: var(--color-accent);
}

/* ==========================================================================
   10. 响应式意图
   820px 以下：首屏从「满屏裁切」转为「整幅呈现 + 文字独立成栏」，
   保证竖版手机上主视觉完整可见，而非被裁掉大半。
   ========================================================================== */
@media (max-width: 1000px) {
  .pillar {
    grid-template-columns: 3rem 2.5rem minmax(0, 1fr);
    row-gap: var(--space-3);
  }

  .pillar__desc {
    grid-column: 1 / -1;
  }
}

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

  .nav__cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 820px) {
  /* 小屏改为「整幅海报 + 信息条」，主视觉按原始比例完整呈现，
     不会被裁掉右侧的竖排品牌字 */
  .hero {
    height: auto;
    min-height: 0;
    grid-template-rows: auto auto;
  }

  .hero__media {
    aspect-ratio: 1080 / 604;
  }

  .hero__breathe {
    left: 61%;
    width: 40vw;
    height: 70%;
  }

  .hero__vignette {
    background:
      linear-gradient(180deg, rgba(2, 18, 10, 0.82) 0%, rgba(2, 18, 10, 0) 16%),
      linear-gradient(0deg, rgba(2, 18, 10, 0.42) 0%, rgba(2, 18, 10, 0) 10%);
  }

  .hero__base {
    padding-block: var(--space-4) var(--space-5);
  }

  .hero__base-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .creed__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }

  /* 竖排在小屏改为横排，避免占满整屏高度 */
  .creed__cn {
    writing-mode: horizontal-tb;
    font-size: var(--fs-700);
    letter-spacing: 0.18em;
  }

  .creed__latin {
    max-width: none;
  }

  .creed__body {
    padding-top: 0;
  }
}

@media (max-width: 560px) {
  .pillar {
    grid-template-columns: 2.75rem minmax(0, 1fr);
  }

  .pillar__icon {
    grid-row: 1;
    grid-column: 1;
  }

  .pillar__num {
    grid-row: 1;
    grid-column: 2;
  }

  .pillar__name {
    grid-column: 1 / -1;
    font-size: var(--fs-500);
  }

  .marquee__word {
    font-size: var(--fs-600);
  }
}