/* ============================================================
   小草 · 百日宴电子请柬
   清雅中式现代风 / 移动端竖屏优先
   ============================================================ */

:root {
  /* 基础层 */
  --background: #F7F9F5;
  --foreground: #26332B;
  /* 表面层 */
  --card: #FFFFFF;
  --card-foreground: #26332B;
  --card-soft: #F1F4EE;
  /* 强调色 */
  --primary: #5E7D63;
  --primary-foreground: #FFFFFF;
  --primary-soft: #E7EDE4;
  --accent: #C08A63;
  /* 边框 */
  --border: #DDE6D8;
  --border-strong: #C6D3C0;
  /* 字体（全部本地系统字体栈，零外网依赖） */
  --font-serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "Georgia", serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;

  --page-width: 460px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  overflow-x: hidden;
  background-color: #EDF1EA;
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 屏幕底纹：极淡的对角细线，宽屏时两侧不空 */
@media (min-width: 720px) {
  body {
    background-image:
      repeating-linear-gradient(45deg, rgba(94, 125, 99, .045) 0 1px, transparent 1px 14px);
  }
}

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

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

/* ---------------- 页面画幅 ---------------- */

.page {
  position: relative;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  background-color: var(--background);
  overflow: hidden;
  isolation: isolate;
}

@media (min-width: 720px) {
  .page {
    margin: 40px auto;
    border: 1px solid var(--border);
    box-shadow:
      0 1px 0 rgba(255, 255, 255, .8) inset,
      0 40px 90px -60px rgba(38, 51, 43, .55);
  }
}

/* 纸质颗粒：内联 SVG 噪声，无外部请求 */
.page__grain {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: .5;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.86' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
}

/* ---------------- 通用排版 ---------------- */

.serif { font-family: var(--font-serif); }

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 11px;
  letter-spacing: .42em;
  text-indent: .42em;
  color: var(--primary);
}

.eyebrow::before,
.eyebrow::after {
  content: "";
  width: 34px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-strong));
}

.eyebrow::after {
  background: linear-gradient(to left, transparent, var(--border-strong));
}

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

.cover {
  position: relative;
  padding: 46px 30px 42px;
  text-align: center;
}

.cover__frame {
  position: absolute;
  inset: 18px 18px auto;
  height: calc(100% - 36px);
  border: 1px solid var(--border);
  pointer-events: none;
}

.cover__frame::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(192, 138, 99, .18);
}

/* 四角小点 */
.cover__frame .dot {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .55;
}
.cover__frame .dot:nth-child(1) { top: -3px; left: -3px; }
.cover__frame .dot:nth-child(2) { top: -3px; right: -3px; }
.cover__frame .dot:nth-child(3) { bottom: -3px; left: -3px; }
.cover__frame .dot:nth-child(4) { bottom: -3px; right: -3px; }

.cover__inner {
  position: relative;
  z-index: 2;
}

/* 头像 */
.portrait {
  position: relative;
  width: clamp(172px, 47vw, 208px);
  margin: 26px auto 0;
}

.portrait__ring {
  position: relative;
  padding: 9px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: rgba(255, 255, 255, .7);
}

.portrait__ring::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  border: 1px solid rgba(192, 138, 99, .35);
  pointer-events: none;
}

.portrait__frame {
  position: relative;
  overflow: hidden;
  border-radius: 50%;
  aspect-ratio: 1 / 1;
  background: var(--card-soft);
}

.portrait__frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}

/* 头像旁的手绘草叶 */
.portrait__leaf {
  position: absolute;
  width: 74px;
  color: var(--primary);
  opacity: .5;
  pointer-events: none;
}
.portrait__leaf--left  { top: -14px; left: -46px; transform: rotate(-8deg); }
.portrait__leaf--right { bottom: -10px; right: -48px; transform: rotate(172deg); }

@media (max-width: 380px) {
  .portrait__leaf { width: 58px; }
  .portrait__leaf--left { left: -30px; }
  .portrait__leaf--right { right: -32px; }
}

/* 姓名与标题 */
.cover__name {
  margin: 26px 0 0;
  font-family: var(--font-serif);
  /* 三字大名：字号略收、字距放松，保证主视觉分量与居中平衡 */
  font-size: clamp(33px, 9.2vw, 40px);
  font-weight: 600;
  letter-spacing: .16em;
  text-indent: .16em;
  line-height: 1.24;
  white-space: nowrap;
  color: var(--foreground);
}

.cover__sub {
  margin: 12px 0 0;
  font-size: 12.5px;
  letter-spacing: .5em;
  text-indent: .5em;
  color: var(--primary);
}

.cover__date {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 22px;
  padding: 7px 18px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-serif);
  font-size: 15px;
  letter-spacing: .16em;
  color: var(--foreground);
}

.cover__date em {
  font-style: normal;
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--accent);
}

/* 向下滑动提示 */
.scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 30px;
  font-size: 10.5px;
  letter-spacing: .3em;
  text-indent: .3em;
  color: #98A69A;
}

.scroll-hint svg {
  width: 12px;
  height: 18px;
  animation: nudge 2.6s ease-in-out infinite;
}

@keyframes nudge {
  0%, 100% { transform: translateY(0); opacity: .5; }
  50%      { transform: translateY(5px); opacity: 1; }
}

/* ---------------- 正文区 ---------------- */

.section {
  position: relative;
  padding: 0 30px;
}

.invite {
  padding-top: 8px;
  padding-bottom: 52px;
  text-align: center;
}

.section__label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 0 0 24px;
  font-size: 10.5px;
  letter-spacing: .38em;
  text-indent: .38em;
  color: var(--accent);
}

.section__label::before,
.section__label::after {
  content: "";
  width: 18px;
  height: 1px;
  background: rgba(192, 138, 99, .45);
}

.invite__text {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 2.15;
  letter-spacing: .04em;
  color: #3D4C42;
  text-align: justify;
  text-justify: inter-ideograph;
}

.invite__text + .invite__text { margin-top: 16px; }

.invite__text strong {
  font-weight: 600;
  color: var(--primary);
}

/* 分隔草叶 */
.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 34px auto 0;
  width: 100%;
  color: var(--border-strong);
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  max-width: 96px;
  height: 1px;
  background: var(--border);
}

.divider svg { width: 46px; height: 20px; color: var(--primary); opacity: .55; }

/* ---------------- 时间地点卡 ---------------- */

.info { padding-bottom: 46px; }

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 30px 24px 26px;
  box-shadow: 0 24px 50px -42px rgba(38, 51, 43, .5);
}

.card::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(192, 138, 99, .16);
  pointer-events: none;
}

.card__row {
  position: relative;
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--border);
}

.card__row:first-of-type { padding-top: 4px; }

.card__icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 4px;
  color: var(--primary);
}

.card__icon svg { width: 100%; height: 100%; }

.card__body { flex: 1 1 auto; min-width: 0; }

.card__label {
  display: block;
  margin-bottom: 7px;
  font-size: 10.5px;
  letter-spacing: .32em;
  text-indent: .32em;
  color: var(--accent);
}

.card__main {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(19px, 5.4vw, 22px);
  line-height: 1.45;
  letter-spacing: .03em;
  color: var(--foreground);
}

.card__main .num {
  font-weight: 600;
  letter-spacing: .05em;
}

.card__sub {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.9;
  letter-spacing: .02em;
  color: #617065;
}

.card__actions {
  position: relative;
  margin-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  min-height: 50px;
  padding: 14px 18px;
  border-radius: 2px;
  font-size: 14.5px;
  letter-spacing: .14em;
  text-decoration: none;
  transition: background-color .25s ease, color .25s ease, transform .25s ease, box-shadow .25s ease;
}

.btn svg { width: 16px; height: 16px; }

.btn--primary {
  background: var(--primary);
  color: var(--primary-foreground);
  box-shadow: 0 14px 24px -18px rgba(94, 125, 99, .9);
}

.btn--primary:hover { background: #4E6B54; }
.btn--primary:active { transform: translateY(1px); }

.btn--ghost {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--border-strong);
  min-height: 46px;
  font-size: 13.5px;
}

.btn--ghost:hover { background: var(--primary-soft); }

.card__note {
  position: relative;
  margin: 20px 0 0;
  font-size: 11.5px;
  line-height: 1.9;
  letter-spacing: .04em;
  color: #8A988C;
  text-align: center;
}

/* ---------------- 收尾 ---------------- */

.closing {
  padding-top: 6px;
  padding-bottom: 56px;
  text-align: center;
}

.closing__call {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(26px, 7.6vw, 32px);
  font-weight: 600;
  letter-spacing: .32em;
  text-indent: .32em;
  color: var(--primary);
}

.closing__leaf {
  width: 60px;
  height: 26px;
  margin: 20px auto 18px;
  color: var(--accent);
  opacity: .8;
}

.closing__signature {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 14.5px;
  letter-spacing: .14em;
  color: var(--foreground);
}

.closing__en {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: 10.5px;
  letter-spacing: .3em;
  color: #9AA79C;
}

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

.footer {
  padding: 0 30px 40px;
  text-align: center;
}

.footer__line {
  margin: 0 auto 14px;
  width: 1px;
  height: 34px;
  background: linear-gradient(to bottom, transparent, var(--border-strong));
}

.footer p {
  margin: 0;
  font-size: 10px;
  letter-spacing: .26em;
  text-indent: .26em;
  color: #A2AEA4;
}

/* ---------------- 复制提示 ---------------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 36px;
  z-index: 50;
  transform: translate(-50%, 12px);
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(38, 51, 43, .92);
  color: #F7F9F5;
  font-size: 12.5px;
  letter-spacing: .12em;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
}

.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------------- 入场 / 滚动显隐 ---------------- */

.entry {
  opacity: 0;
  transform: translateY(14px);
  animation: entry-in .95s cubic-bezier(.22, .61, .36, 1) forwards;
}

@keyframes entry-in {
  to { opacity: 1; transform: none; }
}

.entry--d1 { animation-delay: .10s; }
.entry--d2 { animation-delay: .22s; }
.entry--d3 { animation-delay: .36s; }
.entry--d4 { animation-delay: .48s; }
.entry--d5 { animation-delay: .60s; }
.entry--d6 { animation-delay: .74s; }

.reveal.is-armed {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 1s cubic-bezier(.22, .61, .36, 1), transform 1s cubic-bezier(.22, .61, .36, 1);
  will-change: opacity, transform;
}

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

/* 无 JS 兜底：未加 .is-armed 时内容始终可见 */

@media (prefers-reduced-motion: reduce) {
  .entry { animation: none; opacity: 1; transform: none; }
  .reveal,
  .reveal.is-armed { opacity: 1; transform: none; transition: none; }
  .scroll-hint svg { animation: none; }
}