/* =========================================================
   高中 · 被光记住的三年
   浅色杂志 / 年鉴风：纸张、细线、大字号、图版
   ========================================================= */

:root {
  --paper: #f4f0e6;
  --paper-2: #eae4d5;
  --ink: #17181c;
  --muted: #6d685e;
  --line: #d8d1c0;
  --accent: #b4442f;
  --blue: #2b4360;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: "Inter", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pad: clamp(1.2rem, 5vw, 4.5rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
blockquote {
  font-family: var(--serif);
  font-weight: 600;
  margin: 0;
  line-height: 1.12;
  letter-spacing: 0.01em;
}

p {
  margin: 0;
}

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

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

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
}

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

.kick {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ---------------- 顶栏 ---------------- */

.top {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem var(--pad);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 240, 230, 0.9);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--serif);
  letter-spacing: 0.08em;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-size: 0.9rem;
}

.brand__text em {
  font-style: normal;
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin-left: 0.5em;
}

.top__nav {
  display: flex;
  gap: clamp(1rem, 2.4vw, 2.2rem);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.top__nav a {
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s;
}

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

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

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

.top__meta {
  font-family: var(--sans);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.top__meta b {
  color: var(--ink);
  font-weight: 600;
}

/* ---------------- 封面 ---------------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding: clamp(3rem, 7vw, 6rem) var(--pad) clamp(2.5rem, 6vw, 5rem);
  max-width: 1440px;
  margin-inline: auto;
}

.hero__text h1 {
  margin: 0.5rem 0 1.4rem;
  font-size: clamp(2.8rem, 6.6vw, 6.2rem);
  letter-spacing: -0.015em;
  line-height: 1.02;
}

.hero__text h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero__lead {
  max-width: 34ch;
  color: var(--muted);
  font-size: clamp(0.95rem, 0.4vw + 0.86rem, 1.08rem);
  line-height: 2;
}

.hero__foot {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  margin-top: clamp(1.8rem, 3vw, 2.6rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.9em 1.6em;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.84rem;
  letter-spacing: 0.12em;
  transition: background-color 0.35s, color 0.35s, transform 0.35s var(--ease);
}

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

.hero__hint {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.hero__hint b {
  color: var(--ink);
}

.hero__visual {
  position: relative;
  padding-bottom: 3rem;
}

.cover {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  background: var(--paper-2);
  padding: 10px;
  box-shadow: 0 30px 60px -40px rgba(23, 24, 28, 0.55), 0 0 0 1px var(--line);
}

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

.cover--inset {
  position: absolute;
  left: -4%;
  bottom: 0;
  width: 34%;
  aspect-ratio: 3 / 4;
  transform: rotate(-3deg);
  box-shadow: 0 26px 50px -30px rgba(23, 24, 28, 0.6), 0 0 0 1px var(--line);
  background: #fff;
  padding: 8px;
}

.cover__label {
  position: absolute;
  right: 0;
  bottom: 0;
  font-size: 0.6rem;
  letter-spacing: 0.26em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ---------------- 胶片条 ---------------- */

.strip {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 12px 0;
  background: var(--paper-2);
  mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
}

.strip__track {
  display: flex;
  gap: 10px;
  width: max-content;
  animation: strip 70s linear infinite;
}

.strip:hover .strip__track {
  animation-play-state: paused;
}

.strip img {
  height: 108px;
  width: auto;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.02);
  border: 1px solid rgba(23, 24, 28, 0.12);
}

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

/* ---------------- 内页 ---------------- */

.spread {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(4rem, 9vw, 8rem) var(--pad);
  max-width: 1440px;
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
}

.spread__rail {
  position: sticky;
  top: 110px;
  align-self: start;
}

.spread__no {
  display: block;
  font-family: var(--serif);
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px rgba(23, 24, 28, 0.25);
  margin-bottom: 1.2rem;
}

.spread__rail h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 1.2rem;
}

.spread__rail p {
  color: var(--muted);
  max-width: 30ch;
}

.spread__rail p + p {
  margin-top: 0.8rem;
}

.spread__figures {
  display: grid;
  gap: clamp(1.4rem, 3vw, 2.4rem);
}

.fig {
  margin: 0;
  background: #fff;
  padding: 10px;
  box-shadow: 0 26px 60px -40px rgba(23, 24, 28, 0.55), 0 0 0 1px var(--line);
}

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

.fig--tall {
  width: 72%;
  aspect-ratio: 3 / 4;
}

.fig--wide {
  width: 88%;
  aspect-ratio: 4 / 3;
  margin-left: auto;
}

.pull {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
  border-left: 2px solid var(--accent);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  line-height: 1.8;
  color: var(--ink);
}

/* ---------------- 图版 ---------------- */

.plates {
  padding: clamp(4rem, 9vw, 7rem) var(--pad) clamp(5rem, 10vw, 8rem);
  max-width: 1440px;
  margin-inline: auto;
}

.plates__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(1.6rem, 3vw, 2.6rem);
}

.plates__head h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-top: 0.4rem;
}

.plates__note {
  max-width: 38ch;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
}

.plates__note code {
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  background: var(--paper-2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: clamp(150px, 16vw, 250px);
  grid-auto-flow: dense;
  gap: clamp(0.6rem, 1.2vw, 0.9rem);
}

.plate {
  position: relative;
  grid-column: span 4;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  background: var(--paper-2);
  cursor: zoom-in;
  -webkit-tap-highlight-color: transparent;
}

.plate:nth-child(6n + 1) {
  grid-column: span 8;
}


.plate img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.001);
  transition: transform 1s var(--ease), filter 0.6s;
  filter: saturate(0.92);
}

.plate::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(23, 24, 28, 0.12);
  pointer-events: none;
  transition: border-color 0.35s;
}

.plate:hover img {
  transform: scale(1.04);
  filter: saturate(1.02);
}

.plate:hover::after {
  border-color: var(--accent);
}

.plate__no {
  position: absolute;
  left: 10px;
  top: 8px;
  z-index: 2;
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: #fff;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
  mix-blend-mode: difference;
}

.empty {
  padding: 4rem 0;
  text-align: center;
  color: var(--muted);
  font-family: var(--serif);
}

/* ---------------- 页脚 ---------------- */

.foot {
  padding: clamp(2rem, 4vw, 3rem) var(--pad) 2.4rem;
  border-top: 1px solid var(--line);
  background: var(--paper-2);
}

.foot__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}

.foot__brand {
  font-family: var(--serif);
  letter-spacing: 0.1em;
}

.foot__links {
  display: flex;
  gap: 1.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

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

.foot__count {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.foot__count b {
  color: var(--ink);
}

.foot__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  padding-top: 1.1rem;
  font-size: 0.72rem;
  color: var(--muted);
}

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

.police {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.police img {
  height: 18px;
  width: auto;
}

/* ---------------- 共享灯箱主题（浅色） ---------------- */

.lb {
  --lb-bg: rgba(244, 240, 230, 0.96);
  --lb-blur: blur(14px);
  --lb-ink: var(--ink);
  --lb-muted: rgba(23, 24, 28, 0.55);
  --lb-accent: var(--accent);
  --lb-accent-ink: #fff;
  --lb-line: rgba(23, 24, 28, 0.22);
  --lb-btn: rgba(255, 255, 255, 0.6);
  --lb-radius: 0;
  --lb-btn-size: 40px;
  --lb-img-radius: 0;
  --lb-shadow: 0 40px 90px -50px rgba(23, 24, 28, 0.8);
  --lb-font: var(--serif);
}

.lb__nav {
  border-radius: 0;
}

/* ---------------- 图片槽位 ---------------- */

[data-slot] {
  background: var(--paper-2);
  overflow: hidden;
}

[data-slot] img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------------- 响应式 ---------------- */

@media (max-width: 1080px) {
  .top__nav {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    gap: 2.4rem;
  }
  .hero__text h1 {
    font-size: clamp(2.6rem, 10vw, 4.4rem);
  }
  .hero__visual {
    max-width: 620px;
  }
  .spread {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .spread__rail {
    position: static;
  }
  .spread__rail p {
    max-width: 46ch;
  }
  .fig--tall {
    width: 60%;
  }
  .fig--wide {
    width: 78%;
  }
}

@media (max-width: 760px) {
  .top {
    padding: 0.7rem 1.1rem;
  }
  .brand__text em {
    display: none;
  }
  .top__meta {
    font-size: 0.6rem;
    letter-spacing: 0.16em;
  }
  .hero {
    padding: 2.2rem 1.1rem 2rem;
  }
  .hero__text h1 {
    font-size: clamp(2.4rem, 13vw, 3.4rem);
  }
  .cover--inset {
    left: 0;
    width: 38%;
  }
  .strip img {
    height: 78px;
  }
  .spread,
  .plates {
    padding-inline: 1.1rem;
  }
  .plates__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .plates__note {
    text-align: left;
  }
  .grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-auto-rows: 132px;
    gap: 0.5rem;
  }
  .plate {
    grid-column: span 3;
  }
  .plate:nth-child(6n + 1) {
    grid-column: span 6;
  }
  .foot {
    padding-inline: 1.1rem;
  }
}

/* ---------------- 下载弹窗（共享组件） ---------------- */

.foot__dl {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  letter-spacing: 0.14em;
}

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

.dlm {
  --dlm-bg: #faf7ef;
  --dlm-ink: var(--ink);
  --dlm-muted: var(--muted);
  --dlm-line: var(--line);
  --dlm-accent: var(--accent);
  --dlm-accent-ink: #fff;
  --dlm-hover: rgba(180, 68, 47, 0.06);
  --dlm-radius: 2px;
  --dlm-font: var(--sans);
  --dlm-title-font: var(--serif);
  --dlm-backdrop: rgba(244, 240, 230, 0.72);
}