.support-page { min-height: 100vh; display: flex; flex-direction: column; }
.support-main { flex: 1; display: grid; grid-template-columns: 1fr 1.2fr; align-items: start; gap: 64px; padding-block: 64px 80px; }
.support-intro h1 { margin: 18px 0; font-size: clamp(36px, 4.5vw, 58px); line-height: 1.08; letter-spacing: -.04em; }
.support-lead { margin-bottom: 12px; font-size: 24px; font-weight: 700; }
.support-intro > p:not(.section-index) { max-width: 450px; }
.support-tips { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line-light); color: #55595c; }
.support-tips h2 { margin-top: 0; color: var(--charcoal); font-size: 18px; }
.support-tips ul { padding-left: 20px; }
.support-tips li + li { margin-top: 10px; }
.support-tips a, .support-privacy a { text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.support-card { min-width: 0; padding: 32px; background: var(--paper); border: 1px solid var(--line-light); border-radius: var(--radius-m); }
.support-card h2 { margin: 0 0 16px; font-size: 26px; line-height: 1.25; letter-spacing: -.025em; }
.support-card .section-index { padding: 0; }
.support-account { display: flex; align-items: start; justify-content: space-between; gap: 16px; margin-bottom: 28px; padding-bottom: 20px; border-bottom: 1px solid var(--line-light); }
.support-account p { min-width: 0; margin: 0; color: #55595c; font-size: 13px; }
.support-account strong { display: block; margin-top: 3px; color: var(--charcoal); overflow-wrap: anywhere; }
.support-link-button { min-height: 44px; padding: 0 8px; border: 0; background: transparent; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.support-label { display: block; margin: 22px 0 8px; font-size: 14px; font-weight: 700; }
.support-label span { margin-left: 8px; color: #666a6d; font-weight: 400; }
.support-card input:not([type="hidden"]), .support-card textarea { width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid #aaadae; border-radius: 8px; color: var(--charcoal); background: #fff; font: inherit; }
.support-card textarea { display: block; resize: vertical; }
.support-card input[type="file"] { padding: 10px; font-size: 14px; }
.support-card input::file-selector-button { margin-right: 12px; padding: 7px 10px; border: 0; border-radius: 5px; background: var(--limestone); color: var(--charcoal); font: inherit; cursor: pointer; }
.support-hint, .support-privacy { margin: 8px 0 0; color: #666a6d; font-size: 13px; line-height: 1.6; }
.support-privacy { margin-top: 24px; }
.support-submit { width: 100%; margin-top: 22px; white-space: normal; }
.support-submit:disabled { opacity: .65; cursor: wait; }
.support-notice { margin: 0 0 22px; padding: 14px 16px; border: 1px solid; border-radius: 8px; font-size: 14px; overflow-wrap: anywhere; }
.support-notice ul { margin: 0; padding-left: 18px; }
.support-notice p { margin-bottom: 0; }
.support-notice--error { color: #8b2424; border-color: #efb3b3; background: #fff0ed; }
.support-notice--success { color: #245c3a; border-color: #acd0b8; background: #eff9f2; }
[data-upload-error] { margin-top: 16px; }
.support-previews { display: grid; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 12px; padding: 0; margin: 16px 0 0; list-style: none; }
.support-previews li { min-width: 0; }
.support-previews img { display: block; width: 100%; height: 90px; border: 1px solid var(--line-light); border-radius: 6px; object-fit: contain; background: var(--limestone); }
.support-previews span { display: block; margin-top: 5px; overflow-wrap: anywhere; font-size: 11px; }
.support-previews button { min-height: 44px; padding: 6px 0; border: 0; background: transparent; font-size: 13px; text-decoration: underline; cursor: pointer; }
.support-page .site-footer { padding-bottom: 50px; }
.support-page [hidden] { display: none; }
@media (max-width: 900px) {
  .support-main { grid-template-columns: 1fr; gap: 32px; padding-block: 36px 48px; }
  .support-intro h1 { font-size: clamp(36px, 7vw, 52px); }
  .support-tips { margin-top: 24px; }
}
@media (max-width: 480px) {
  .support-main { width: calc(100% - 32px); }
  .support-card { padding: 22px 18px; }
  .support-card h2 { font-size: 23px; }
  .support-label span { display: block; margin: 2px 0 0; }
}