/* ==========================================================================
   components.css — 站点导航 / 页头 / 按钮 / 卡片 / 弹窗 / 表单 / 页脚
   ========================================================================== */

/* ==========================================================================
   站点导航
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgba(8, 8, 10, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 100%;
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.site-nav__brand img {
  width: 34px;
  height: auto;
  filter: grayscale(1) brightness(1.6);
  transition: filter 0.35s var(--ease), transform 0.35s var(--ease);
}

.site-nav__brand:hover img {
  filter: grayscale(1) brightness(2.1);
  transform: rotate(-6deg);
}

.site-nav__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-nav__brand-jp {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  white-space: nowrap;
}

.site-nav__brand-en {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.26em;
  color: var(--paper-faint);
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: clamp(0.1rem, 1.1vw, 0.65rem);
}

.site-nav__link {
  position: relative;
  padding: 0.5rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
  white-space: nowrap;
  transition: color 0.28s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.28rem;
  height: 1.5px;
  background: var(--ember);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.32s var(--ease);
}

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

.site-nav__link:hover::after,
.site-nav__link.is-active::after {
  transform: scaleX(1);
}

.site-nav__link.is-active {
  color: var(--paper);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 导航内的「机密」链接：划掉感 */
.site-nav__secret {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--paper-faint);
  text-decoration: line-through;
  padding: 0.45rem 0.35rem;
  transition: color 0.28s var(--ease);
}

.site-nav__secret:hover {
  color: var(--blood);
}

/* 移动端专用入口，桌面隐藏 */
.site-nav__link--mobile,
.site-nav__secret--mobile {
  display: none;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  color: var(--paper);
}

.nav-toggle span {
  position: relative;
  display: block;
  width: 17px;
  height: 1.5px;
  background: currentColor;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s var(--ease);
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  --btn-bg: var(--blood);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.82rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  overflow: hidden;
  isolation: isolate;
  transition:
    background-color 0.3s var(--ease),
    border-color 0.3s var(--ease),
    color 0.3s var(--ease),
    transform 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}

/* 斜切光带扫过 */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.28) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.65s var(--ease);
}

.btn:hover::before {
  transform: translateX(120%);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px -12px rgba(193, 18, 31, 0.85);
}

.btn:active {
  transform: translateY(0);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--paper);
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  border-color: var(--paper);
  background: rgba(242, 239, 233, 0.05);
  box-shadow: none;
}

.btn--quiet {
  --btn-bg: rgba(242, 239, 233, 0.06);
  --btn-fg: var(--paper);
  border-color: var(--line);
}

.btn--quiet:hover {
  --btn-bg: rgba(193, 18, 31, 0.16);
  border-color: rgba(193, 18, 31, 0.5);
  box-shadow: none;
}

.btn--block {
  width: 100%;
}

.btn--sm {
  padding: 0.6rem 1.1rem;
  font-size: 0.68rem;
}

.btn__arrow {
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ==========================================================================
   标签 / 徽章
   ========================================================================== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
}

.tag--blood {
  border-color: rgba(193, 18, 31, 0.55);
  background: rgba(193, 18, 31, 0.12);
  color: #ff8b8b;
}

.tag__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px rgba(193, 18, 31, 0.16);
}

/* ==========================================================================
   面板（替代原先的 notice-alert）
   ========================================================================== */
.panel {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  background:
    linear-gradient(180deg, rgba(242, 239, 233, 0.035), transparent 60%),
    var(--ink-700);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 34px;
  height: 1px;
  background: var(--blood);
}

.panel--alert {
  border-color: rgba(193, 18, 31, 0.32);
  background:
    linear-gradient(180deg, rgba(193, 18, 31, 0.14), transparent 70%),
    var(--ink-700);
}

.panel__label {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ember);
}

.panel__title {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
}

/* 带项目符号的清单 */
.rule-list li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.5rem;
  color: var(--paper-dim);
  border-bottom: 1px dashed var(--line);
}

.rule-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.rule-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.12rem;
  width: 6px;
  height: 6px;
  background: var(--blood);
  transform: rotate(45deg);
}

/* ==========================================================================
   页头（首页 Hero）
   ========================================================================== */
.site-header {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.site-header__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 80% at 78% 30%, rgba(193, 18, 31, 0.4), transparent 62%),
    radial-gradient(ellipse 60% 70% at 12% 82%, rgba(255, 77, 26, 0.16), transparent 60%);
}

/* 斜向条纹 */
.site-header__stripes {
  position: absolute;
  inset: -20% -10%;
  pointer-events: none;
  opacity: 0.5;
  background: repeating-linear-gradient(
    108deg,
    transparent 0 44px,
    rgba(242, 239, 233, 0.028) 44px 45px
  );
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 20%, transparent 78%);
}

.site-header__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-block: clamp(2.75rem, 7vw, 5.5rem);
}

.site-header__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ember);
}

.site-header__eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.site-header__crest {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.site-header__crest img {
  width: clamp(52px, 7vw, 76px);
  filter: grayscale(1) brightness(1.5) drop-shadow(0 0 18px rgba(193, 18, 31, 0.35));
}

.site-header__title {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 1.15rem + 2.35vw, 3.35rem);
  letter-spacing: 0.02em;
  line-height: 1.06;
}

.site-header__title em {
  display: block;
  font-family: var(--font-display);
  font-style: normal;
  font-size: 0.3em;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--paper-faint);
  margin-top: 0.85rem;
}

.site-header__lead {
  max-width: 46ch;
  margin-top: 1.4rem;
  color: var(--paper-dim);
  font-size: var(--step-1);
  line-height: 1.7;
}

.site-header__lead strong {
  color: var(--paper);
  background: linear-gradient(transparent 62%, rgba(193, 18, 31, 0.4) 62%);
}

.site-header__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* Hero 右侧：档案卡 */
.hero-card {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background:
    linear-gradient(150deg, rgba(242, 239, 233, 0.06), transparent 52%),
    rgba(10, 10, 12, 0.78);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: 0 34px 70px -40px rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(6px);
}

/* 四角裁切标记 */
.hero-card::before,
.hero-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid rgba(193, 18, 31, 0.75);
  pointer-events: none;
}

.hero-card::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.hero-card::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

.hero-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1rem;
}

.hero-card__no {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--paper-faint);
}

.hero-card__stamp {
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(193, 18, 31, 0.7);
  color: #ff9a9a;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  transform: rotate(-2.5deg);
}

.stat-list {
  display: grid;
  gap: 0.15rem;
}

.stat-list__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--line);
}

.stat-list__row:last-child {
  border-bottom: 0;
}

.stat-list dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--paper-faint);
  text-transform: uppercase;
}

.stat-list dd {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.stat-list dd .unit {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--paper-faint);
  margin-left: 0.25rem;
}

.hero-card__foot {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--paper-faint);
}

/* 跑马灯 */
.marquee {
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.5);
  padding-block: 0.5rem;
}

.marquee__track {
  display: flex;
  width: max-content;
  gap: 2.5rem;
  animation: marquee 34s linear infinite;
}

.marquee__track span {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--paper-faint);
  white-space: nowrap;
}

.marquee__track span::after {
  content: "◆";
  color: var(--blood);
  font-size: 0.5rem;
}

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

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

/* ==========================================================================
   首页内容卡片
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: clamp(1rem, 2.2vw, 1.75rem);
}

.overview {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.25rem, 3.5vw, 2.75rem);
  align-items: start;
}

.overview__lead {
  font-family: var(--font-serif);
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--paper);
}

.overview__lead strong {
  color: #fff;
  text-decoration: underline;
  text-decoration-color: var(--blood);
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
}

.overview__body {
  margin-top: 1rem;
  color: var(--paper-dim);
}

/* 校规触发器 */
.rule-trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.5rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-left: 2px solid var(--blood);
  background: rgba(242, 239, 233, 0.025);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  color: var(--paper-dim);
  text-align: left;
  transition:
    background-color 0.28s var(--ease),
    border-color 0.28s var(--ease),
    color 0.28s var(--ease);
}

.rule-trigger:hover {
  background: rgba(193, 18, 31, 0.1);
  border-color: rgba(193, 18, 31, 0.45);
  color: var(--paper);
}

.rule-trigger__icon {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  border: 1px solid currentColor;
  font-size: 0.7rem;
  transition: transform 0.35s var(--ease);
}

.rule-trigger[aria-expanded="true"] .rule-trigger__icon {
  transform: rotate(45deg);
}

/* 折叠区 */
.collapse {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.42s var(--ease);
}

.collapse[data-open="true"] {
  grid-template-rows: 1fr;
}

.collapse__inner {
  min-height: 0;
  overflow: hidden;
}

.collapse__content {
  padding-top: 0.75rem;
}

/* 编号章节列表（入学指南） */
.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
}

.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line);
}

.steps li:last-child {
  border-bottom: 0;
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blood);
  padding-top: 0.28rem;
}

.steps h4 {
  font-size: var(--step-0);
  letter-spacing: 0.02em;
}

.steps p {
  margin-top: 0.22rem;
  font-size: var(--step--1);
  color: var(--paper-dim);
}

/* 学生卡 */
.students {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 268px), 1fr));
  gap: clamp(0.85rem, 2vw, 1.35rem);
}

.student {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.35rem;
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    border-color 0.35s var(--ease),
    background-color 0.35s var(--ease),
    transform 0.35s var(--ease);
}

/* 左侧红色进度条 */
.student::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--blood), transparent);
  opacity: 0.55;
  transition: opacity 0.35s var(--ease);
}

.student:hover {
  transform: translateY(-3px);
  background: var(--ink-600);
  border-color: rgba(193, 18, 31, 0.45);
}

.student:hover::before {
  opacity: 1;
}

.student__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.student__id {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--paper-faint);
}

.student__grade {
  display: grid;
  place-items: center;
  min-width: 40px;
  height: 40px;
  padding-inline: 0.4rem;
  border: 1px solid rgba(193, 18, 31, 0.5);
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: #ff8b8b;
  background: rgba(193, 18, 31, 0.12);
}

.student__name {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
}

.student__talent {
  display: block;
  margin-top: 0.3rem;
  font-size: var(--step--1);
  color: var(--paper-dim);
}

.student__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--paper-faint);
  text-transform: uppercase;
}

/* 被涂黑的名字 */
.censored {
  padding: 0 0.28em;
  background: #000;
  color: transparent;
  border-radius: 1px;
  cursor: help;
  user-select: none;
  transition:
    color 0.3s var(--ease),
    background-color 0.3s var(--ease);
}

.censored:hover,
.censored:focus-visible {
  background: var(--blood);
  color: var(--paper);
}

/* 设施列表 */
.facilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 270px), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.facility {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: clamp(1.15rem, 2.6vw, 1.6rem);
  background: var(--ink-800);
  transition: background-color 0.35s var(--ease);
}

.facility:hover {
  background: var(--ink-600);
}

.facility__no {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  color: var(--blood);
}

.facility__name {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
}

.facility__desc {
  font-size: var(--step--1);
  color: var(--paper-dim);
}

/* 通知 */
.notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(0.9rem, 2.5vw, 1.5rem);
  padding: clamp(1.15rem, 3vw, 1.6rem);
  border: 1px solid var(--line);
  border-left: 2px solid var(--blood);
  background: rgba(242, 239, 233, 0.022);
  transition: background-color 0.3s var(--ease);
}

.notice:hover {
  background: rgba(193, 18, 31, 0.06);
}

.notice__date {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  color: var(--paper-faint);
  white-space: nowrap;
  padding-top: 0.2rem;
}

.notice__date b {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--paper);
  line-height: 1;
}

.notice__title {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  margin-bottom: 0.4rem;
}

.notice__body {
  font-size: var(--step--1);
  color: var(--paper-dim);
}

.notice__body + .notice__body {
  margin-top: 0.45rem;
}

.notice--urgent .notice__date b {
  color: var(--ember);
}

.notice-list {
  display: grid;
  gap: 0.85rem;
}

/* ==========================================================================
   弹窗
   ========================================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(7px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.32s var(--ease),
    visibility 0.32s var(--ease);
}

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

.modal__dialog {
  position: relative;
  width: min(100%, 560px);
  max-height: min(88vh, 760px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: clamp(1.35rem, 4vw, 2.1rem);
  background:
    linear-gradient(165deg, rgba(242, 239, 233, 0.05), transparent 46%),
    var(--ink-700);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--blood);
  border-radius: var(--radius);
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.95);
  transform: translateY(16px) scale(0.985);
  transition: transform 0.36s var(--ease);
}

.modal.is-open .modal__dialog {
  transform: none;
}

.modal--wide .modal__dialog {
  width: min(100%, 780px);
}

.modal__close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  color: var(--paper-dim);
  font-size: 1.05rem;
  line-height: 1;
  transition:
    color 0.28s var(--ease),
    border-color 0.28s var(--ease),
    background-color 0.28s var(--ease);
}

.modal__close:hover {
  color: #fff;
  border-color: var(--blood);
  background: rgba(193, 18, 31, 0.25);
}

.modal__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ember);
}

.modal__title {
  font-family: var(--font-serif);
  font-size: var(--step-2);
  padding-right: 2rem;
}

.modal__text {
  margin-top: 1rem;
  color: var(--paper-dim);
  font-size: var(--step--1);
}

.modal__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.modal__field {
  margin-top: 1.1rem;
}

.modal__field label {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.modal__error {
  display: none;
  margin-top: 0.5rem;
  font-size: var(--step--1);
  color: #ff7a7a;
}

.modal__error.is-shown {
  display: block;
}

.modal__hint {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--paper-faint);
}

/* 文档弹窗内的正文段落 */
.doc-text {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.1rem;
  font-size: var(--step--1);
  line-height: 1.85;
  color: var(--paper-dim);
  text-align: justify;
}

.doc-text strong {
  color: #fff;
}

/* 黑白熊气泡 */
.monokuma-bubble {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(6.5rem, 15vw, 8.5rem);
  z-index: 130;
  width: min(280px, calc(100vw - 2rem));
  padding: 0.95rem 1.05rem;
  background: var(--paper);
  color: #14100f;
  border-radius: 3px;
  font-family: var(--font-serif);
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.65;
  box-shadow: 0 18px 40px -18px rgba(0, 0, 0, 0.9);
  animation: bubble-in 0.32s var(--ease);
}

.monokuma-bubble::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: -7px;
  width: 14px;
  height: 14px;
  background: var(--paper);
  transform: rotate(45deg);
}

.monokuma-bubble__name {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blood);
}

@keyframes bubble-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
}

/* 黑白熊浮标 */
.monokuma-float {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 110;
  width: clamp(64px, 8vw, 92px);
  filter: drop-shadow(0 12px 22px rgba(0, 0, 0, 0.75));
  transition:
    transform 0.4s var(--ease),
    filter 0.4s var(--ease);
  animation: float-idle 5.5s ease-in-out infinite;
}

.monokuma-float:hover {
  transform: rotate(-7deg) scale(1.07);
  filter: drop-shadow(0 0 18px rgba(193, 18, 31, 0.7));
  animation-play-state: paused;
}

@keyframes float-idle {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -7px;
  }
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
  background: #050506;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(140px, 1fr));
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2.25rem, 5vw, 3.5rem);
}

.site-footer__brand {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}

.site-footer__brand img {
  width: 44px;
  filter: grayscale(1) brightness(1.5);
}

.site-footer__name {
  font-family: var(--font-serif);
  font-size: var(--step-1);
  letter-spacing: 0.08em;
}

.site-footer__tagline {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  line-height: 1.9;
  color: var(--paper-faint);
}

.site-footer__col h3 {
  margin-bottom: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--paper-faint);
}

.site-footer__col li {
  padding-block: 0.22rem;
}

.site-footer__col a {
  font-size: var(--step--1);
  color: var(--paper-dim);
  transition: color 0.28s var(--ease);
}

.site-footer__col a:hover {
  color: var(--ember);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 1.1rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--paper-faint);
}

.site-footer__quote {
  color: var(--blood);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 900px) {
  .site-header__inner {
    grid-template-columns: 1fr;
    padding-block: clamp(2.25rem, 8vw, 3.5rem);
  }

  .hero-card {
    max-width: 480px;
  }

  .overview {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  :root {
    --nav-h: 56px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav__links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: calc(100dvh - var(--nav-h));
    overflow-y: auto;
    padding: 0.35rem var(--gutter) 1rem;
    background: #060607;
    border-bottom: 1px solid var(--line-strong);
    box-shadow: 0 24px 40px -24px rgba(0, 0, 0, 0.95);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity 0.28s var(--ease),
      transform 0.28s var(--ease),
      visibility 0.28s var(--ease);
  }

  .site-nav.is-open .site-nav__links {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav__link {
    padding: 0.85rem 0.2rem;
    border-bottom: 1px solid var(--line);
    font-size: 0.9rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__actions .btn {
    display: none;
  }

  .site-nav__link--mobile {
    display: block;
    color: var(--ember);
  }

  .site-nav__secret--mobile {
    display: block;
    padding: 0.85rem 0.2rem;
    font-size: 0.8rem;
    text-decoration: line-through;
    border-bottom: 0;
  }

  .section-head {
    margin-bottom: var(--space-4);
  }

  .section-head__title {
    letter-spacing: 0.02em;
  }

  .site-header__title {
    letter-spacing: 0;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    justify-content: flex-start;
  }

  .monokuma-float {
    width: 62px;
  }

  .monokuma-bubble {
    bottom: 5.6rem;
  }
}

@media (max-width: 400px) {
  .site-nav__brand-en {
    display: none;
  }
}