/* ==========================================================================
   西瓜 · 个人主页
   简约新中式 / 深浅双主题
   色板取自参考图（酒红 + 米黄）并转译为「朱砂 + 宣纸」
   ========================================================================== */

/* --------------------------------------------------------------- 设计令牌 */
:root {
  --paper:        #F7F3EA;   /* 宣纸 */
  --paper-2:      #FFFDF9;   /* 卡片 */
  --paper-3:      #F1EBDF;   /* 浅块 */
  --ink:          #1B1815;   /* 墨 */
  --ink-2:        #4A443C;
  --ink-3:        #8A8177;
  --cinnabar:     #8E2323;   /* 朱砂 */
  --cinnabar-2:   #6E1A1A;
  --cinnabar-soft:rgba(142, 35, 35, .08);
  --gold:         #B08D57;   /* 描金 */
  --line:         rgba(27, 24, 21, .13);
  --line-soft:    rgba(27, 24, 21, .07);
  --shadow-sm:    0 1px 2px rgba(27,24,21,.05);
  --shadow:       0 2px 4px rgba(27,24,21,.04), 0 16px 40px -16px rgba(27,24,21,.18);
  --shadow-lg:    0 30px 70px -30px rgba(27,24,21,.35);
  --hero-veil:    rgba(255,253,249,.55);

  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong",
                "SimSun", Georgia, "Times New Roman", serif;
  --font-sans:  system-ui, -apple-system, "Segoe UI", "PingFang SC",
                "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --maxw: 1180px;
  --nav-h: 68px;
  --radius: 4px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

[data-theme="dark"] {
  --paper:        #14110E;
  --paper-2:      #1C1815;
  --paper-3:      #221D19;
  --ink:          #EDE6D8;
  --ink-2:        #C4BAA9;
  --ink-3:        #8C8377;
  --cinnabar:     #C24A3E;
  --cinnabar-2:   #9E3A30;
  --cinnabar-soft:rgba(194, 74, 62, .14);
  --gold:         #C9A96A;
  --line:         rgba(237, 230, 216, .15);
  --line-soft:    rgba(237, 230, 216, .08);
  --shadow-sm:    0 1px 2px rgba(0,0,0,.4);
  --shadow:       0 2px 4px rgba(0,0,0,.35), 0 16px 40px -16px rgba(0,0,0,.7);
  --shadow-lg:    0 30px 70px -30px rgba(0,0,0,.85);
  --hero-veil:    rgba(20,17,14,.55);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s var(--ease), color .35s var(--ease);
}

/* 宣纸质感：极淡的经纬纹理 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .5;
  background-image:
    repeating-linear-gradient(0deg,   var(--line-soft) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg,  var(--line-soft) 0 1px, transparent 1px 3px);
  background-size: 4px 4px, 4px 4px;
  mix-blend-mode: multiply;
}
[data-theme="dark"] body::before { mix-blend-mode: screen; opacity: .28; }

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s var(--ease), opacity .2s var(--ease);
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: .01em;
  margin: 0;
}

p { margin: 0 0 1em; }

::selection { background: var(--cinnabar); color: #FFFDF9; }

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

/* ---------------------------------------------------------------- 布局 */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  position: relative;
  z-index: 1;
}

.section { padding: clamp(56px, 8vw, 110px) 0; }
.section--tight { padding: clamp(40px, 5vw, 70px) 0; }

.rule {
  height: 1px;
  border: 0;
  background: var(--line);
  margin: 0;
}

/* ------------------------------------------------------------- 顶部导航 */
.nav {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background-color .35s var(--ease), border-color .35s var(--ease);
}

/* 首页：导航压在满屏 Hero 之上，先透明，向下滚动后转为毛玻璃实底 */
body.is-home .nav {
  background: transparent;
  border-bottom-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.is-home .nav.is-solid {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border-bottom-color: var(--line);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 34px);
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .06em;
  white-space: nowrap;
}

/* 印章式字标 */
.brand__seal {
  width: 30px;
  height: 30px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--cinnabar);
  color: #FFF6EE;
  font-size: 15px;
  line-height: 1;
  border-radius: 3px;
  letter-spacing: 0;
  box-shadow: 0 2px 8px -3px var(--cinnabar);
}

.brand__en {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.nav__links {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 30px);
  margin-left: auto;
}

.nav__link {
  position: relative;
  font-size: 14.5px;
  letter-spacing: .04em;
  color: var(--ink-2);
  padding: 4px 0;
  white-space: nowrap;
}

/* G. 朱砂指示线：由 JS 驱动，跟随鼠标滑向悬停项，移开后滑回当前页 */
.nav__ind {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 1.5px;
  background: var(--cinnabar);
  opacity: 0;
  pointer-events: none;
  transition: left .34s var(--ease), width .34s var(--ease), opacity .3s var(--ease);
}

.nav__link:hover { color: var(--ink); }
.nav__link[aria-current="page"] { color: var(--ink); font-weight: 600; }

.nav__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: clamp(8px, 1.6vw, 20px);
  border-left: 1px solid var(--line);
}

/* 语言切换：分段控件 */
.seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px;
  background: var(--paper-2);
}

.seg__btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-3);
  font: inherit;
  font-size: 12.5px;
  letter-spacing: .06em;
  padding: 4px 11px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s var(--ease);
}

.seg__btn[aria-pressed="true"] {
  background: var(--cinnabar);
  color: #FFF6EE;
}

/* 主题切换 */
.icon-btn {
  appearance: none;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  cursor: pointer;
  transition: all .2s var(--ease);
}

.icon-btn:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn .i-sun { display: none; }
[data-theme="dark"] .icon-btn .i-sun { display: block; }
[data-theme="dark"] .icon-btn .i-moon { display: none; }

/* ------------------------------------------------------------------ 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 14.5px;
  letter-spacing: .05em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .25s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--cinnabar);
  color: #FFF6EE;
  box-shadow: 0 10px 26px -12px var(--cinnabar);
}
.btn--primary:hover {
  background: var(--cinnabar-2);
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -14px var(--cinnabar);
}

.btn--ghost {
  border-color: var(--line);
  color: var(--ink-2);
  background: var(--paper-2);
}
.btn--ghost:hover {
  border-color: var(--cinnabar);
  color: var(--cinnabar);
  transform: translateY(-2px);
}

.btn svg { width: 15px; height: 15px; }

/* ------------------------------------------------------------------ Hero */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background: var(--paper-3);
}

/* 首页：Hero 顶到视口最上方（照片越过导航），文字垫到导航之下 */
body.is-home .hero {
  margin-top: calc(-1 * var(--nav-h));
  padding-top: var(--nav-h);
}

/* 满屏照片 + 左缘模糊延伸：延伸与照片出自同一张合成图，接缝天然无缝 */
.hero__bleed {
  position: absolute;
  inset: 0 0 -22% 0;      /* 底部多留空间，供滚动视差下移 */
  z-index: 0;
  will-change: transform;
}

.hero__bleed picture { display: contents; }

.hero__bleed img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}

/* 深色主题：对整张背景图统一压低亮度（同一张图，不会露出接缝） */
[data-theme="dark"] .hero__bleed img {
  filter: brightness(.46) saturate(.9);
}

/* 左侧用主题纸色做薄纱保证文字对比；底部渐隐接入正文 */
.hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg,
      color-mix(in srgb, var(--paper) 78%, transparent) 0%,
      color-mix(in srgb, var(--paper) 46%, transparent) 30%,
      color-mix(in srgb, var(--paper) 12%, transparent) 52%,
      transparent 68%),
    linear-gradient(180deg,
      transparent 58%,
      color-mix(in srgb, var(--paper) 72%, transparent) 88%,
      var(--paper) 100%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero__text {
  max-width: min(700px, 44vw);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cinnabar);
  font-weight: 600;
  margin-bottom: 20px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1.5px;
  background: currentColor;
  flex: none;
}

/* 主标语：全站最大字号 */
.hero__tagline {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(44px, 7.4vw, 104px);
  line-height: 1.06;
  letter-spacing: .1em;
  color: var(--ink);
  margin: 0 0 14px;
  text-shadow: 0 2px 26px color-mix(in srgb, var(--paper) 55%, transparent);
}

/* 副标题：中等字号 */
.hero__subtitle {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.1vw, 28px);
  letter-spacing: .14em;
  color: var(--ink-2);
  margin: 0 0 28px;
}

.hero__intro {
  color: var(--ink-2);
  font-size: 16px;
  max-width: 44ch;
  margin-bottom: 32px;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* --------------------------------------------------------- 区块小标题 */
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.sec-head__num {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--gold);
  display: block;
  margin-bottom: 10px;
}

.sec-head__title {
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: .03em;
}

.sec-head__en {
  display: block;
  font-family: var(--font-sans);
  font-size: 11.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 10px;
  font-weight: 500;
}

.sec-head__more {
  font-size: 13.5px;
  letter-spacing: .06em;
  color: var(--cinnabar);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}
.sec-head__more:hover { gap: 12px; }

.sec-head__desc {
  font-size: 14.5px;
  color: var(--ink-3);
  margin: 0;
  max-width: 40ch;
}

/* -------------------------------------------------------------- 关于我 */
.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.about__card {
  padding-top: 26px;
  border-top: 2px solid var(--ink);
  display: flex;
  flex-direction: column;
}

.about__card:nth-child(2) { border-top-color: var(--cinnabar); }
.about__card:nth-child(3) { border-top-color: var(--gold); }

.about__num {
  font-family: var(--font-serif);
  font-size: 36px;
  line-height: 1;
  color: var(--ink);
  opacity: .17;
  margin-bottom: 14px;
  letter-spacing: .02em;
}

.about__title {
  font-size: 19px;
  margin-bottom: 6px;
}

.about__title-en {
  font-family: var(--font-sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  margin-bottom: 16px;
}

.about__text {
  color: var(--ink-2);
  font-size: 15px;
  margin: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.tag {
  font-size: 12px;
  letter-spacing: .05em;
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-3);
  background: var(--paper-2);
}

/* ---------------------------------------------------------------- 影像 */
/* 三行拼成严丝合缝的矩形：3 横 / 3 竖 / 1 通栏，每张比例不变、零裁切 */
.works__grid {
  --work-gap: clamp(10px, 1.4vw, 18px);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--work-gap);
}

.work {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--paper-3);
  border: 0;
  padding: 0;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
  will-change: transform;
  aspect-ratio: 3 / 2;                       /* 第 1 行：横图 */
}

.work:nth-child(4),
.work:nth-child(5),
.work:nth-child(6) { aspect-ratio: 2 / 3; }  /* 第 2 行：竖图 */

.work:nth-child(7) {                         /* 第 3 行：通栏横幅 */
  grid-column: 1 / -1;
  aspect-ratio: 3 / 2;
}

.work img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease), filter .5s var(--ease);
}

.work:hover img { transform: scale(1.05); }

/* A. 遮罩自下而上推入，露出标题 */
.work__veil {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 64%;
  display: flex;
  align-items: flex-end;
  padding: 20px 18px;
  background: linear-gradient(180deg, transparent, rgba(11, 8, 7, .88) 62%);
  transform: translateY(100%);
  transition: transform .52s var(--ease);
  pointer-events: none;
}

.work:hover .work__veil,
.work:focus-visible .work__veil { transform: none; }

.work__title {
  font-family: var(--font-serif);
  font-size: clamp(16px, 1.5vw, 20px);
  letter-spacing: .14em;
  color: #F7F3EA;
  text-shadow: 0 2px 16px rgba(0, 0, 0, .55);
}

/* C. 3D 倾斜时跟随光标的柔光 */
.work__glare {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(230px circle at var(--mx, 50%) var(--my, 50%),
              rgba(255, 255, 255, .26), transparent 62%);
  transition: opacity .35s var(--ease);
}

.work:hover .work__glare { opacity: 1; }

/* B. 光标跟随的放大预览 */
.peek {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  width: clamp(240px, 22vw, 360px);
  pointer-events: none;
  opacity: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper-2);
  box-shadow: 0 34px 70px -22px rgba(0, 0, 0, .62);
  transition: opacity .3s var(--ease);
  will-change: transform;
}

.peek.is-on { opacity: 1; }
.peek img { display: block; width: 100%; height: auto; }

/* 触屏：无 hover，标题常显，光标预览与倾斜不启用 */
@media (hover: none), (pointer: coarse) {
  .work__veil {
    transform: none;
    height: auto;
    padding: 14px 14px 12px;
    background: linear-gradient(180deg, transparent, rgba(11, 8, 7, .9));
  }
  .work__glare { display: none; }
  .peek { display: none; }
}

/* ---------------------------------------------------------------- 创作 */
.creative {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.creative__item {
  width: 100%;
  max-width: 600px;
}

.creative__frame {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-2);
  overflow: hidden;
  cursor: zoom-in;
  box-shadow: var(--shadow);
}

.creative__frame img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform .7s var(--ease);
}

.creative__frame:hover img { transform: scale(1.02); }

.creative__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.creative__title {
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: .04em;
}

.creative__kind {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
}

.creative__hint {
  font-size: 13px;
  color: var(--ink-3);
  margin: 8px 0 0;
}

/* -------------------------------------------------------------- 文章卡片 */
.grid-articles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2vw, 24px);
}

.acard {
  display: flex;
  flex-direction: column;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 2.6vw, 32px);
  transition: all .3s var(--ease);
  position: relative;
  overflow: hidden;
}

.acard::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--cinnabar);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .35s var(--ease);
}

.acard:hover {
  border-color: color-mix(in srgb, var(--cinnabar) 32%, var(--line));
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.acard:hover::before { transform: scaleY(1); }

.acard__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-3);
  margin-bottom: 14px;
  text-transform: uppercase;
}

.acard__date { font-variant-numeric: tabular-nums; }

.acard__title {
  font-size: clamp(19px, 2.2vw, 24px);
  margin-bottom: 8px;
  letter-spacing: .02em;
}

.acard__title-en {
  font-family: var(--font-sans);
  font-size: 12.5px;
  color: var(--ink-3);
  letter-spacing: .04em;
  margin-bottom: 14px;
  font-weight: 400;
}

.acard__sum {
  color: var(--ink-2);
  font-size: 14.5px;
  margin: 0 0 20px;
  flex-grow: 1;
}

.acard__more {
  font-size: 13px;
  letter-spacing: .07em;
  color: var(--cinnabar);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.acard:hover .acard__more { gap: 12px; }

/* -------------------------------------------------------- 文章列表页 */
.page-head {
  padding: clamp(48px, 7vw, 96px) 0 clamp(20px, 3vw, 36px);
}

.page-head__title {
  font-size: clamp(38px, 7vw, 78px);
  letter-spacing: .04em;
  line-height: 1;
  margin-bottom: 14px;
}

.page-head__en {
  font-family: var(--font-sans);
  font-size: 11.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.page-head__desc {
  color: var(--ink-2);
  max-width: 60ch;
  margin-top: 22px;
  font-size: 15.5px;
}

.alist { border-top: 1px solid var(--line); }

.aitem {
  display: grid;
  grid-template-columns: 128px 1fr auto;
  gap: clamp(16px, 3vw, 44px);
  align-items: start;
  padding: clamp(24px, 3vw, 40px) 0;
  border-bottom: 1px solid var(--line);
  transition: background-color .3s var(--ease);
}

.aitem:hover { background: var(--paper-2); }

.aitem__date {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  padding-top: 5px;
  white-space: nowrap;
}

.aitem__title {
  font-size: clamp(20px, 2.6vw, 29px);
  margin-bottom: 7px;
  letter-spacing: .02em;
}

.aitem__title-en {
  font-family: var(--font-sans);
  font-size: 12.5px;
  color: var(--ink-3);
  margin-bottom: 12px;
  letter-spacing: .04em;
}

.aitem__sum {
  color: var(--ink-2);
  font-size: 14.5px;
  margin: 0 0 14px;
  max-width: 62ch;
}

.aitem__tags { display: flex; flex-wrap: wrap; gap: 7px; }

.aitem__go {
  color: var(--ink-3);
  padding-top: 4px;
  transition: all .28s var(--ease);
}
.aitem:hover .aitem__go { color: var(--cinnabar); transform: translateX(5px); }
.aitem__go svg { width: 20px; height: 20px; }

/* ------------------------------------------------------------ 文章正文 */
.article {
  max-width: 720px;
  margin: 0 auto;
}

.article__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ink-3);
  margin-bottom: 28px;
}
.article__back:hover { color: var(--cinnabar); }
.article__back svg { width: 15px; height: 15px; }

.article__title {
  font-size: clamp(30px, 5vw, 50px);
  letter-spacing: .02em;
  margin-bottom: 12px;
}

.article__title-en {
  font-family: var(--font-sans);
  font-size: 13.5px;
  color: var(--ink-3);
  letter-spacing: .05em;
  margin-bottom: 22px;
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-bottom: 26px;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: .06em;
}

.article__body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 2.05;
  letter-spacing: .015em;
  color: var(--ink);
}

.article__body > p { margin: 0 0 1.5em; text-indent: 2em; }

.article__body > p.noindent { text-indent: 0; }

.article__body figure { margin: 2.2em 0; }
.article__body figure img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.article__body figcaption {
  font-family: var(--font-sans);
  font-size: 12.5px;
  color: var(--ink-3);
  text-align: center;
  margin-top: 10px;
  text-indent: 0;
}

.article__note {
  margin-top: 40px;
  padding: 16px 20px;
  border-left: 3px solid var(--gold);
  background: var(--paper-3);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.7;
}

.article__foot {
  margin-top: 48px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--ink-3);
}

.article__homelink {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cinnabar);
  letter-spacing: .06em;
  white-space: nowrap;
}
.article__homelink:hover { gap: 13px; }
.article__homelink svg { width: 17px; height: 17px; flex: none; }

.article__pn {
  display: flex;
  gap: 22px;
  margin-left: auto;
  flex-wrap: wrap;
}
.article__pn a { color: var(--ink-3); }
.article__pn a:hover { color: var(--cinnabar); }
.article__pn span { display: block; }

/* 评论占位 */
.comments {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.comments__title {
  font-size: 19px;
  margin-bottom: 8px;
}

.comments__hint {
  font-size: 13.5px;
  color: var(--ink-3);
  background: var(--paper-3);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  line-height: 1.75;
}

.comments__hint code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px;
  background: var(--paper);
  padding: 1px 6px;
  border-radius: 3px;
  border: 1px solid var(--line);
}

/* -------------------------------------------------------------- 联系页 */
.contact__hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
}

.contact__avatar {
  width: clamp(120px, 15vw, 168px);
  height: clamp(120px, 15vw, 168px);
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--paper-2);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(36px, 5vw, 58px);
}

.ccard {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 2.6vw, 30px);
  display: flex;
  flex-direction: column;
  transition: all .3s var(--ease);
}

.ccard:hover {
  border-color: color-mix(in srgb, var(--cinnabar) 32%, var(--line));
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.ccard__label {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 12px;
}

.ccard__value {
  font-family: var(--font-serif);
  font-size: clamp(17px, 2vw, 21px);
  letter-spacing: .02em;
  word-break: break-all;
  margin-bottom: 6px;
}

.ccard__hint {
  font-size: 13px;
  color: var(--ink-3);
  margin: 0;
}

.ccard__row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 18px;
}

.copy-btn {
  appearance: none;
  font: inherit;
  font-size: 12px;
  letter-spacing: .06em;
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-2);
  cursor: pointer;
  transition: all .2s var(--ease);
}
.copy-btn:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.copy-btn[data-done="1"] { border-color: var(--cinnabar); color: var(--cinnabar); }

.contact__note {
  margin-top: clamp(34px, 4vw, 52px);
  padding: 20px 24px;
  border-left: 3px solid var(--cinnabar);
  background: var(--paper-3);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-2);
  font-size: 14.5px;
}

/* ------------------------------------------------------------------ 页脚 */
.footer {
  margin-top: clamp(60px, 8vw, 110px);
  border-top: 1px solid var(--line);
  padding: clamp(40px, 5vw, 64px) 0 34px;
  background: var(--paper-2);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: clamp(24px, 4vw, 60px);
  margin-bottom: 40px;
}

.footer__name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 26px;
  letter-spacing: .05em;
  margin-bottom: 8px;
}

.footer__tag {
  font-size: 13.5px;
  color: var(--cinnabar);
  letter-spacing: .05em;
  margin-bottom: 16px;
}

.footer__desc {
  font-size: 13.5px;
  color: var(--ink-3);
  max-width: 34ch;
  margin: 0;
}

.footer__h {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 600;
  margin-bottom: 16px;
  font-family: var(--font-sans);
}

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__list a, .footer__list span {
  font-size: 14px;
  color: var(--ink-2);
}
.footer__list a:hover { color: var(--cinnabar); }

.footer__bottom {
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--ink-3);
  letter-spacing: .04em;
}

/* --------------------------------------------------------- 开屏引导页 */
html.is-splashing,
html.is-splashing body { overflow: hidden; }

.splash {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #0A0807;
  cursor: none;
  opacity: 1;
  transition: opacity .8s var(--ease), transform 1s var(--ease);
}

.splash[hidden] { display: none; }

/* 同一会话内已看过：HTML 解析阶段就隐藏，避免闪一下 */
html.splash-skip .splash { display: none; }

.splash picture { display: contents; }

.splash__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
}

.splash__scrim {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(115% 85% at 50% 48%, rgba(8,6,5,.20), rgba(8,6,5,.66) 78%),
    linear-gradient(180deg, rgba(8,6,5,.52) 0%, rgba(8,6,5,.22) 38%, rgba(8,6,5,.72) 100%);
}

.splash__inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 24px;
  color: #F7F3EA;
  transition: transform .8s var(--ease), opacity .5s var(--ease);
}

.splash__title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(28px, 6vw, 72px);
  letter-spacing: .2em;
  text-indent: .2em;
  line-height: 1.4;
  margin: 0;
  text-shadow: 0 4px 40px rgba(0, 0, 0, .55);
}

.splash__en {
  font-family: var(--font-sans);
  font-size: clamp(10.5px, 1.25vw, 13px);
  letter-spacing: .26em;
  text-transform: uppercase;
  color: rgba(247, 243, 234, .7);
  margin-top: 20px;
}

/* 自定义光标：这行提示字本身跟着鼠标走 */
.splash__hint {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3;
  pointer-events: none;
  white-space: nowrap;
  padding: 9px 18px;
  border: 1px solid rgba(247, 243, 234, .45);
  border-radius: 999px;
  background: rgba(247, 243, 234, .10);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  color: #F7F3EA;
  font-size: 12.5px;
  letter-spacing: .2em;
  transform: translate3d(-50%, -50%, 0);
  opacity: 0;
  transition: opacity .35s var(--ease), border-color .25s var(--ease),
              background-color .25s var(--ease);
  will-change: transform;
}

.splash__hint.is-on { opacity: 1; }
.splash__hint.is-press {
  border-color: var(--gold);
  background: rgba(201, 169, 106, .22);
}

/* 触屏 / 无指针设备：提示行回到文字下方常态显示，不再跟随 */
@media (hover: none), (pointer: coarse) {
  .splash { cursor: auto; }
  .splash__hint {
    position: static;
    display: inline-block;
    transform: none;
    margin-top: 30px;
    opacity: 1;
    animation: hintPulse 2.6s ease-in-out infinite;
  }
}

@keyframes hintPulse {
  0%, 100% { opacity: .62; }
  50%      { opacity: 1; }
}

/* 揭开 */
.splash.is-leaving {
  opacity: 0;
  transform: scale(1.045);
  pointer-events: none;
}

.splash.is-leaving .splash__inner {
  transform: translateY(-26px);
  opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
  .splash__hint {
    position: static;
    display: inline-block;
    transform: none;
    margin-top: 30px;
    opacity: 1;
    animation: none;
  }
}

/* -------------------------------------------------------------- 灯箱 */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(12, 9, 8, .93);
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 56px);
  backdrop-filter: blur(6px);
}

.lightbox[open], .lightbox.is-open { display: flex; }

.lightbox__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  object-fit: contain;
  border-radius: 3px;
  box-shadow: 0 40px 90px -30px #000;
}

/* 超长图（如内务小贴士长图）：完整显示并允许纵向滚动 */
.lightbox.is-tall {
  align-items: flex-start;
  overflow-y: auto;
  padding-top: clamp(24px, 5vw, 64px);
  padding-bottom: clamp(24px, 5vw, 64px);
}

.lightbox.is-tall .lightbox__img {
  max-height: none;
  width: min(680px, 100%);
  height: auto;
}

.lightbox__close {
  position: fixed;
  top: 18px; right: 20px;
  z-index: 4;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.28);
  background: rgba(255,255,255,.08);
  color: #FFF6EE;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
}
.lightbox__close:hover { background: rgba(255,255,255,.18); }

/* 翻页按钮 */
.lightbox__nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: clamp(38px, 4vw, 50px);
  height: clamp(38px, 4vw, 50px);
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.26);
  background: rgba(255,255,255,.08);
  color: #FFF6EE;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}
.lightbox__nav:hover {
  background: rgba(255,255,255,.2);
  border-color: rgba(255,255,255,.5);
}
.lightbox__nav--prev { left: clamp(8px, 2.2vw, 30px); }
.lightbox__nav--next { right: clamp(8px, 2.2vw, 30px); }

/* 计数 */
.lightbox__counter {
  position: fixed;
  top: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: 12.5px;
  letter-spacing: .2em;
  color: rgba(255,246,238,.72);
  font-variant-numeric: tabular-nums;
}

/* 缩略图条 */
.lightbox__thumbs {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  display: flex;
  gap: 8px;
  justify-content: flex-start;
  padding: 16px clamp(12px, 3vw, 30px) 18px;
  background: linear-gradient(transparent, rgba(8,6,5,.78));
  overflow-x: auto;
  scrollbar-width: none;
}
.lightbox__thumbs::-webkit-scrollbar { display: none; }
@media (min-width: 900px) { .lightbox__thumbs { justify-content: center; } }

.lightbox__thumb {
  flex: 0 0 auto;
  width: 56px; height: 56px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 3px;
  overflow: hidden;
  background: none;
  cursor: pointer;
  opacity: .5;
  transition: opacity .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.lightbox__thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.lightbox__thumb:hover { opacity: .85; }
.lightbox__thumb[aria-current="true"] {
  opacity: 1;
  border-color: var(--gold);
  transform: translateY(-3px);
}

/* 画廊模式：给底部缩略图条让位；单张模式隐藏翻页相关元素 */
.lightbox:not(.is-single) { padding-bottom: clamp(96px, 12vh, 132px); }

.lightbox.is-single .lightbox__nav,
.lightbox.is-single .lightbox__counter,
.lightbox.is-single .lightbox__thumbs { display: none; }

.lightbox__cap {
  position: fixed;
  bottom: 20px;
  left: 0; right: 0;
  z-index: 3;
  text-align: center;
  color: rgba(255,246,238,.78);
  font-size: 13px;
  letter-spacing: .08em;
  pointer-events: none;
}

.lightbox:not(.is-single) .lightbox__cap { bottom: 92px; }

/* ---------------------------------------------------------- 入场动画 */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ------------------------------------------------------------ 诗句排版 */
.poem {
  margin: 0;
  padding-left: 18px;
  border-left: 2px solid color-mix(in srgb, var(--cinnabar) 42%, transparent);
}

.poem__line {
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 2.15;
  letter-spacing: .03em;
  color: var(--ink-2);
  margin: 0;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
  transition-delay: calc(var(--i, 0) * 95ms);
}

.poem.is-in .poem__line { opacity: 1; transform: none; }

.poem__gap { display: block; height: .9em; }

/* -------------------------------------------------- B. 标题逐字浮现 */
[data-split] .ch {
  display: inline-block;
  opacity: 0;
  transform: translateY(.34em);
  filter: blur(7px);
  transition: opacity .75s var(--ease), transform .75s var(--ease), filter .75s var(--ease);
  transition-delay: calc(var(--i, 0) * 75ms);
}

[data-split].is-shown .ch { opacity: 1; transform: none; filter: none; }

/* ------------------------------------------------ D. 右侧印章进度条 */
.rail {
  position: fixed;
  right: clamp(14px, 2vw, 30px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: none;
}

@media (min-width: 1200px) { .rail { display: block; } }

.rail__track {
  position: relative;
  width: 1px;
  height: clamp(160px, 28vh, 280px);
  background: var(--line);
}

.rail__fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 0;
  background: var(--cinnabar);
  opacity: .55;
}

.rail__seal {
  position: absolute;
  left: 50%;
  top: 0;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--cinnabar);
  color: #FFF6EE;
  font-family: var(--font-serif);
  font-size: 11px;
  line-height: 1;
  box-shadow: 0 3px 10px -3px var(--cinnabar);
}

.rail__dot {
  position: absolute;
  left: 50%;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--line);
  cursor: pointer;
  transition: background-color .25s var(--ease), transform .25s var(--ease);
}
.rail__dot:hover { background: var(--cinnabar); transform: scale(1.8); }
.rail__dot[aria-current="true"] { background: var(--gold); }

.rail__label {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translate(6px, -50%);
  white-space: nowrap;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--ink-3);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease), color .25s var(--ease);
}
.rail__dot:hover .rail__label,
.rail__dot:focus-visible .rail__label {
  opacity: 1;
  transform: translate(0, -50%);
  color: var(--cinnabar);
}

/* ------------------------------------------ E. 主题切换圆形揭示 */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* ---------------------------------------------------------- H. 彩蛋 */
.footer__seal {
  position: relative;
  width: 30px;
  height: 30px;
  flex: none;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 3px;
  background: var(--cinnabar);
  color: #FFF6EE;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 2px 8px -3px var(--cinnabar);
}

.footer__seal .seal-ring {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  border: 2px solid var(--cinnabar);
  opacity: 0;
  pointer-events: none;
}

.footer__seal.is-stamp { animation: sealStamp .7s var(--ease); }
.footer__seal.is-stamp .seal-ring { animation: sealRing .72s var(--ease); }

@keyframes sealStamp {
  0%   { transform: scale(1) rotate(0deg); }
  26%  { transform: scale(1.45) rotate(-10deg); }
  56%  { transform: scale(.92) rotate(4deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes sealRing {
  0%   { opacity: .9; transform: scale(1); }
  100% { opacity: 0; transform: scale(2.4); }
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 16px);
  z-index: 300;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--cinnabar);
  color: #FFF6EE;
  font-size: 13.5px;
  letter-spacing: .08em;
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 18px 40px -16px var(--cinnabar);
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

.melon {
  position: fixed;
  z-index: 300;
  font-size: 26px;
  pointer-events: none;
  animation: melonUp 1.7s var(--ease) forwards;
}

@keyframes melonUp {
  0%   { opacity: 0; transform: translateY(0) scale(.5) rotate(0deg); }
  16%  { opacity: 1; }
  100% { opacity: 0; transform: translateY(-190px) scale(1.15) rotate(26deg); }
}

/* 降低动效时直接显示，避免依赖观察器 */
@media (prefers-reduced-motion: reduce) {
  .poem__line,
  [data-split] .ch {
    opacity: 1;
    transform: none;
    filter: none;
  }
}

/* -------------------------------------------------------------- 响应式 */
@media (min-width: 1500px) {
  .hero__text { max-width: min(780px, 42vw); }
}

@media (max-width: 1000px) {
  .about__grid { grid-template-columns: 1fr; gap: 26px; }
  .about__card { padding-top: 20px; }
  .about__num { font-size: 28px; margin-bottom: 8px; }
  /* 手机：2 列等格（4:5），最后一张通栏，仍保持矩形 */
  .works__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work,
  .work:nth-child(4),
  .work:nth-child(5),
  .work:nth-child(6) { aspect-ratio: 4 / 5; }
  .work:nth-child(7) { grid-column: 1 / -1; aspect-ratio: 8 / 5; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  /* Hero 改为竖构图满铺 + 文字压底 */
  .hero { align-items: flex-end; }
  .hero__bleed img { object-position: center 35%; }
  .hero__veil {
    background:
      linear-gradient(180deg,
        color-mix(in srgb, var(--paper) 34%, transparent) 0%,
        transparent 20%,
        color-mix(in srgb, var(--paper) 58%, transparent) 58%,
        color-mix(in srgb, var(--paper) 92%, transparent) 90%,
        var(--paper) 100%);
  }
  .hero__text { max-width: none; padding-bottom: 44px; }
  .hero__tagline { font-size: clamp(34px, 10.5vw, 56px); letter-spacing: .08em; }
  .hero__subtitle { font-size: clamp(16px, 4.2vw, 21px); letter-spacing: .1em; }
  .hero__intro { max-width: none; }
  .grid-articles { grid-template-columns: 1fr; }
  .aitem { grid-template-columns: 1fr; gap: 12px; }
  .aitem__date { padding-top: 0; }
  .aitem__go { display: none; }
  .contact__grid { grid-template-columns: 1fr; }
  .nav__links { gap: 14px; }
  .brand__en { display: none; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; }
  :root { --nav-h: 60px; }
  .brand__name { display: none; }
  .nav__inner { height: 60px; gap: 10px; }
  .nav__link { font-size: 13.5px; }
  .nav__tools { padding-left: 8px; }
  .seg__btn { padding: 4px 8px; font-size: 12px; }
  .contact__hero { grid-template-columns: 1fr; }
  .contact__avatar { order: -1; }
  .footer__grid { grid-template-columns: 1fr; }
  .article__body { font-size: 16px; line-height: 1.95; }
  .works__grid { --work-gap: 8px; }
  .splash__title { letter-spacing: .14em; text-indent: .14em; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}