/* 平板以并排阅读组织内容；手机按选择、预览、说明的顺序呈现。 */
@media (min-width: 1101px) {
  /* 旋转的装饰也留在可用宽度内，避免中等桌面窗口出现横向滚动。 */
  .hero-visual .orbit-one { right: 4%; }
}
@media (max-width: 1100px) {
  .section-shell, .hero-copy, .vibe-copy, .device-copy,
  .feature-card, .workflow-paper, .source-card, .trust-intro,
  .trust-details, .faq-heading, .faq-list { min-width: 0; }
  .section-heading > div { min-width: 0; }
  .section-heading > p, .device-copy p, .vibe-copy p,
  .source-card > p, .trust-intro > p, .trust-details p,
  .faq-list p, .feature-card p { overflow-wrap: anywhere; }
  .button { min-width: 0; }
  .header-inner { gap: 14px; flex-wrap: wrap; padding-block: 10px; }
  .header-actions { max-width: 100%; margin-left: auto; }
  .header-cta { font-size: 14px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card { padding: 26px; }
  .feature-card h3 { font-size: 20px; }
  .feature-card p { font-size: 15px; line-height: 1.85; }
  .source-heading { flex-wrap: wrap; gap: 12px; }
  .source-card pre { max-width: 100%; }
  .volume-control { min-width: 0; }
  .segmented-tabs button { min-width: 0; }
}

@media (min-width: 701px) and (max-width: 1100px) {
  .section-shell { width: calc(100% - 64px); }
  .section-space { padding-block: 72px; }
  .header-inner { width: calc(100% - 48px); min-height: 78px; }
  .navigation a { padding-inline: 11px; }
  .header-actions { gap: 4px; }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: 28px; padding-block: 50px 54px; }
  .hero-copy { padding-block: 8px; }
  .hero h1 { font-size: clamp(44px, 6vw, 62px); line-height: 1.26; margin-bottom: 24px; }
  .hero-description { font-size: 16px; line-height: 1.85; margin-bottom: 24px; }
  .hero-actions { gap: 10px; }
  .hero-actions .button { font-size: 14px; min-height: 48px; padding-inline: 18px; }
  .hero-notes { gap: 12px 18px; margin-top: 22px; }
  .hero-visual { width: 100%; max-width: none; padding: 34px 0 24px; }
  .hero-visual .orbit-one { inset: 6% 6% 4% 4%; transform: rotate(-3deg); }
  .floating-label { font-size: 13px; right: 8px; top: 0; padding: 8px 13px; }
  .orbit-two { width: 108px; height: 108px; right: 0; }
  .visual-caption { font-size: 12px; gap: 9px; padding-right: 0; }
  .caption-line { width: 24px; }
  .intro-strip { flex-direction: row; align-items: flex-start; gap: 20px; padding-block: 22px; }
  .intro-strip p { font-size: 16px; }
  .intro-strip > div { font-size: 13px; gap: 10px; }
  .section-heading { flex-direction: row; gap: 24px; align-items: flex-end; margin-bottom: 30px; }
  .section-heading > div { flex: 1 1 0; }
  h2 { font-size: clamp(32px, 4vw, 42px); }
  .section-heading > p { max-width: 300px; font-size: 15px; }
  .feature-grid { gap: 16px; }
  .feature-icon { margin-bottom: 22px; }
  .feature-card p { margin-bottom: 22px; }
  .feature-footer { font-size: 13px; }

  .workflow-layout { grid-template-columns: minmax(190px, .8fr) minmax(0, 1.65fr); gap: 22px; }
  .workflow-tabs { display: flex; flex-direction: column; gap: 8px; }
  .workflow-tab { flex-direction: row; align-items: flex-start; gap: 12px; padding: 17px 16px; min-height: 94px; border-radius: 20px; }
  .workflow-tab > span { font-size: 13px; padding-top: 2px; }
  .workflow-tab > div { min-width: 0; flex: 1; }
  .workflow-tab > .icon { display: none; }
  .workflow-tab b { font-size: 16px; }
  .workflow-tab small { display: block; font-size: 13px; line-height: 1.6; margin-top: 5px; }
  .workflow-tabs > .selection-indicator { border-radius: 20px; }
  .workflow-panel { min-height: 400px; padding: 22px; border-radius: 28px; }
  .workflow-paper { width: 100%; max-width: none; padding: 26px 24px; }
  .workflow-paper h3 { font-size: 23px; }
  .workflow-paper p { font-size: 15px; }
  .workflow-number { font-size: 210px; }

  .vibe-section { padding-block: 72px; }
  .vibe-inner { grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr); gap: 28px; align-items: start; }
  .vibe-copy h2 { font-size: clamp(34px, 4.7vw, 48px); }
  .vibe-copy > p:not(.eyebrow) { font-size: 16px; margin-top: 22px; }
  .vibe-benefits { flex-direction: column; gap: 16px; margin-block: 26px; font-size: 14px; }
  .vibe-copy > .vibe-small { font-size: 14px !important; }
  .room-preview { width: 100%; max-width: none; padding: 18px; border-radius: 28px; }
  .scene-stage { min-height: 258px; padding: 30px 12px 16px; }
  .scene-description, .audio-note { font-size: 13px; }
  .room-pet { padding: 12px 8px; gap: 8px; font-size: 13px; }
  .audio-controls { display: grid; grid-template-columns: 1fr; gap: 14px; }
  .audio-controls .button { justify-self: start; font-size: 14px; min-height: 48px; }
  .volume-control { width: 100%; gap: 8px; }
  .volume-control output { font-size: 13px; }

  .device-layout { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 28px; }
  .device-copy { max-width: none; }
  .segmented-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); width: 100%; max-width: 350px; margin-bottom: 26px; }
  .segmented-tabs button { justify-content: center; flex-wrap: wrap; padding: 10px 7px; font-size: 14px; min-height: 48px; gap: 5px; }
  .device-copy h3 { font-size: 26px; }
  .device-copy > p { font-size: 15px; line-height: 1.85; }
  .device-copy ul { font-size: 14px; }
  .device-copy > .device-footnote { font-size: 13px; }
  .device-panel, .device-panel[data-device=mobile] { min-height: 400px; border-radius: 28px; padding: 18px; }
  .device-panel[data-device=mobile] .device-shot { width: 160px; }
  .shot-hint { font-size: 12px; }

  .trust-section { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .trust-intro { padding: 32px 28px; }
  .trust-intro h2 { font-size: 34px; }
  .trust-details { padding: 20px 28px; }
  .trust-details article { gap: 14px; }
  .trust-details h3 { font-size: 20px; }
  .trust-details p { font-size: 14px; }
  .providers { padding-top: 46px; }
  .provider-chips span { font-size: 13px; }
  .start-layout { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 28px; }
  .start-steps { display: flex; flex-direction: column; gap: 28px; }
  .start-steps li { flex-direction: row; gap: 16px; }
  .start-steps h3 { font-size: 20px; }
  .start-steps p { font-size: 15px; }
  .source-card { padding: 22px; }
  .source-card > p, .release-note { font-size: 13px; }
  .source-card pre { padding: 20px; font-size: 14px; }
  .faq { grid-template-columns: minmax(180px, .68fr) minmax(0, 1.65fr); gap: 32px; }
  .faq-heading { padding-top: 18px; }
  .faq-list summary { font-size: 16px; }
  .faq-list details > p { font-size: 15px; }
  .closing { padding: 30px 28px; gap: 22px; }
  .closing-star { font-size: 50px; }
  .closing h2 { font-size: 24px; }
}

@media (max-width: 900px) {
  .navigation { top: 100%; left: 24px; right: 24px; min-width: 0; max-height: min(420px, 65dvh); overflow-y: auto; padding: 8px; border-radius: 24px; }
  .navigation.open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .navigation a { min-width: 0; min-height: 52px; justify-content: center; white-space: normal; overflow-wrap: anywhere; padding: 12px; }
}

@media (max-width: 700px) {
  html { scroll-padding-top: 104px; }
  .section-shell { width: calc(100% - 40px); }
  .section-space { padding-block: 54px; }
  .header-inner { width: calc(100% - 32px); min-height: 74px; gap: 8px 12px; padding-block: 10px; }
  .wordmark { font-size: 25px; gap: 8px; min-height: 44px; }
  .wordmark img { width: 24px; height: 34px; }
  .header-actions { gap: 2px; flex-wrap: wrap; }
  .header-cta { font-size: 13px; min-height: 44px; padding: 10px 14px; }
  .icon-button { width: 44px; height: 44px; padding: 10px; }
  .navigation { left: 16px; right: 16px; border-radius: 22px; }
  .navigation a { font-size: 15px; }
  .hero { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; padding-block: 34px 40px; }
  .hero-copy { padding: 0; }
  .eyebrow { font-size: 13px; margin-bottom: 18px; letter-spacing: .02em; }
  .hero h1 { font-size: clamp(46px, 12.8vw, 60px); line-height: 1.22; margin-bottom: 24px; }
  .hero-description { font-size: 16px; line-height: 1.85; max-width: 36em; margin-bottom: 24px; }
  .hero-actions { display: grid; grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .hero-actions .button { min-height: 52px; font-size: 15px; padding: 14px 20px; }
  .hero-actions .button-outline { justify-self: center; border-color: transparent; min-height: 44px; padding: 10px 22px; }
  .hero-notes { margin-top: 18px; font-size: 13px; gap: 10px 16px; }
  .hero-notes .icon { width: 17px; height: 17px; }
  .hero-visual { width: 100%; max-width: none; padding: 16px; border-radius: 26px; background: var(--primary-container); }
  .hero-visual .visual-orbit { display: none; }
  .floating-label { position: relative; inset: auto; transform: none; display: inline-flex; margin-bottom: 12px; font-size: 12px; padding: 7px 12px; border-radius: 14px; }
  .label-spark { font-size: 21px; }
  .hero-shot, .hero-shot:hover { transform: none; border-radius: 16px; }
  .shot-caption { font-size: 11px; min-height: 36px; padding: 7px 10px; }
  .shot-mode { font-size: 11px; }
  .shot-hint { font-size: 12px; padding: 5px 10px; bottom: 9px; right: 9px; }
  .visual-caption { justify-content: center; font-size: 12px; gap: 9px; margin-top: 14px; padding: 0; }
  .caption-line { width: 22px; }
  .tiny-flower { display: none; }
  .intro-strip { flex-direction: column; align-items: flex-start; gap: 14px; padding: 22px 0; }
  .intro-strip p { font-size: 16px; }
  .intro-strip > div { flex-wrap: wrap; gap: 13px; font-size: 13px; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 26px; }
  h2 { font-size: clamp(29px, 7.8vw, 38px); line-height: 1.4; letter-spacing: -.035em; }
  .section-heading > p { font-size: 15px; line-height: 1.85; margin: 0; }
  .feature-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .feature-card { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 12px 14px; padding: 24px 20px; border-radius: 24px; }
  .feature-icon { grid-column: 1; grid-row: 1 / 3; width: 40px; height: 40px; border-radius: 14px; margin: 0; }
  .feature-card h3 { grid-column: 2; font-size: 18px; line-height: 1.5; margin: 0; }
  .feature-card p { grid-column: 2; font-size: 15px; line-height: 1.85; margin: 0; }
  .feature-footer, .mode-chips, .branch-graphic { grid-column: 2; margin: 0; padding-top: 10px; }
  .feature-footer { font-size: 13px; }
  .mode-chips { gap: 6px; }
  .mode-chips > [role=tab] { min-height: 44px; font-size: 13px; }
  .mode-chips span { font-size: 12px; padding: 4px 8px; }
  .branch-graphic { flex-wrap: wrap; gap: 8px; }

  .workflow { padding-top: 0; }
  .workflow-layout { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .workflow-tabs { display: flex; flex-direction: row; overflow-x: auto; scrollbar-width: thin; gap: 6px; padding: 4px; border: 1px solid var(--outline-variant); border-radius: 20px; background: var(--surface-container-low); }
  .workflow-tab { flex: 0 0 auto; flex-direction: column; align-items: center; justify-content: center; min-width: 88px; min-height: 70px; padding: 10px 12px; gap: 4px; border-radius: 16px; }
  .workflow-tab > span { font-size: 12px; margin: 0; }
  .workflow-tab > .icon, .workflow-tab small { display: none; }
  .workflow-tab b { font-size: 14px; white-space: nowrap; }
  .workflow-tabs > .selection-indicator { border-radius: 16px; }
  .workflow-panel { min-height: 0; padding: 16px; border-radius: 26px; }
  .workflow-paper { padding: 24px 18px; max-width: none; border-radius: 18px; }
  .paper-label { font-size: 13px; }
  .workflow-paper h3 { font-size: 22px; line-height: 1.5; }
  .workflow-paper p { font-size: 15px; line-height: 1.85; margin-bottom: 20px; }
  .workflow-number { font-size: 150px; }
  .workflow-tools { gap: 6px; }
  .workflow-tools span { font-size: 13px; padding: 6px 10px; }

  .vibe-section { padding-block: 54px; }
  .vibe-inner { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .vibe-copy h2 { font-size: clamp(34px, 9.1vw, 44px); }
  .vibe-copy > p:not(.eyebrow) { font-size: 16px; margin-top: 22px; max-width: none; }
  .vibe-benefits { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; margin-block: 24px; font-size: 14px; }
  .vibe-copy > .vibe-small { font-size: 14px !important; }
  .room-preview { width: 100%; max-width: none; padding: 16px; border-radius: 28px; }
  .room-top { gap: 10px; flex-wrap: wrap; }
  .preview-pill, .audio-status { font-size: 12px; }
  .scene-stage { min-height: 268px; padding: 30px 12px 16px; border-radius: 20px; }
  .scene-symbol { font-size: 46px; }
  .scene-name { font-size: 25px; }
  .scene-description { font-size: 14px; }
  .room-pet { font-size: 13px; line-height: 1.65; padding: 12px 10px; gap: 9px; }
  .website-koi { width: 52px; }
  .scene-tabs { display: flex; overflow-x: auto; scrollbar-width: thin; gap: 6px; padding: 4px; margin-block: 16px; border: 1px solid #ffffff22; border-radius: 18px; }
  .scene-tabs button { flex: 0 0 auto; min-width: 102px; min-height: 46px; padding: 10px 12px; font-size: 14px; white-space: nowrap; border-radius: 13px; }
  .scene-tabs > .selection-indicator { border-radius: 13px; }
  .audio-controls { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .audio-controls .button { justify-self: stretch; align-self: auto; max-width: 100%; min-height: 50px; padding: 12px 16px; font-size: 14px; }
  .volume-control { width: 100%; gap: 9px; }
  .volume-control .icon { width: 18px; height: 18px; }
  .volume-control output { font-size: 13px; min-width: 34px; }
  .audio-note { font-size: 13px; line-height: 1.75; margin-top: 14px; }

  .device-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .device-copy { display: contents; }
  .segmented-tabs { grid-row: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; width: 100%; padding: 4px; }
  .segmented-tabs button { justify-content: center; flex-wrap: wrap; min-height: 48px; padding: 10px 6px; font-size: 14px; gap: 4px; }
  .device-panel { grid-row: 2; min-height: clamp(220px, 70vw, 280px); padding: 16px; border-radius: 26px; }
  .device-panel[data-device=mobile] { min-height: 0; padding: 16px; }
  .device-panel[data-device=mobile] .device-shot { width: min(192px, 65%); }
  #device-title { grid-row: 3; font-size: 24px; line-height: 1.5; margin: 4px 0 0; }
  #device-description { grid-row: 4; font-size: 15px; line-height: 1.85; margin: 0; }
  #device-points { grid-row: 5; font-size: 14px; margin: 0; }
  .device-copy > .device-footnote { grid-row: 6; font-size: 13px; line-height: 1.85; margin: 0; }

  .trust-section { grid-template-columns: minmax(0, 1fr); border-radius: 28px; }
  .trust-intro { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 12px 16px; padding: 28px 24px; }
  .trust-icon { grid-column: 1; grid-row: 1 / 3; width: 48px; height: 48px; border-radius: 16px; margin: 0; }
  .trust-intro > .eyebrow { grid-column: 2; font-size: 12px; margin: 0; }
  .trust-intro h2 { grid-column: 2; font-size: 28px; margin: 0; }
  .trust-intro > p:not(.eyebrow) { grid-column: 1 / -1; font-size: 15px; line-height: 1.85; margin: 6px 0; }
  .trust-intro > .button { grid-column: 1 / -1; justify-self: start; min-height: 48px; }
  .trust-details { padding: 6px 24px; }
  .trust-details article { padding-block: 24px; gap: 14px; }
  .trust-details h3 { font-size: 19px; }
  .trust-details p { font-size: 15px; line-height: 1.85; }
  .providers { padding-top: 42px; }
  .providers h3 { font-size: 22px; }
  .providers > p { font-size: 15px; }
  .provider-chips { gap: 8px; }
  .provider-chips span { font-size: 13px; padding: 8px 12px; }
  .start-layout { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .get-started .section-heading > .button { width: 100%; min-height: 50px; }
  .start-steps { display: flex; flex-direction: column; gap: 24px; }
  .start-steps li { flex-direction: row; gap: 16px; }
  .start-steps h3 { font-size: 20px; }
  .start-steps p { font-size: 15px; line-height: 1.85; }
  .source-card { padding: 20px; border-radius: 26px; }
  .source-card pre { font-size: 14px; padding: 18px; }
  .source-card > p, .release-note { font-size: 13px; line-height: 1.85; }
  .source-heading button { min-height: 44px; }
  .faq { grid-template-columns: minmax(0, 1fr); gap: 24px; padding-bottom: 54px; }
  .faq-heading { padding: 0; }
  .faq-list summary { min-height: 72px; font-size: 16px; padding: 18px 4px; gap: 14px; overflow-wrap: anywhere; }
  .faq-list details > p { font-size: 15px; line-height: 1.85; padding: 0 18px 22px 4px; }
  .closing { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 30px 22px; text-align: center; margin-bottom: 38px; border-radius: 28px; }
  .closing-star { justify-self: center; font-size: 46px; }
  .closing h2 { font-size: 25px; }
  .closing p { font-size: 14px; }
  .closing .button { grid-column: 1; justify-self: stretch; min-height: 50px; font-size: 15px; }
  .site-footer { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; padding-block: 26px; }
  .site-footer > .wordmark { grid-column: 1; grid-row: 1; }
  .site-footer > a:not(.wordmark) { grid-column: 2; grid-row: 1; font-size: 14px; }
  .site-footer > p { grid-column: 1 / -1; grid-row: 2; width: auto; font-size: 14px; line-height: 1.85; }
  .site-footer > span { grid-column: 1 / -1; grid-row: 3; margin: 0; font-size: 13px; }
  .image-dialog { padding: 12px; border-radius: 22px; }
  .dialog-top { gap: 12px; }
  .dialog-top h2 { font-size: 16px; line-height: 1.5; }
  .image-dialog > p { font-size: 13px; }
}

@media (max-width: 359px) {
  .header-cta { display: none; }
  .hero-notes { gap: 9px; font-size: 12px; }
  .hero-visual { padding: 12px; }
  .shot-mode { display: none; }
  .feature-card { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; padding: 22px 16px; }
  .feature-icon { width: 36px; height: 36px; }
  .mode-chips > [role=tab] { flex-basis: calc(50% - 3px); }
  .workflow-panel { padding: 12px; }
  .workflow-paper { padding: 22px 16px; }
  .room-preview { padding: 12px; }
  .scene-stage { padding-inline: 10px; }
  .room-pet { flex-wrap: wrap; }
  .trust-intro { grid-template-columns: minmax(0, 1fr); padding: 26px 20px; }
  .trust-icon { grid-row: 1; }
  .trust-intro > .eyebrow { grid-column: 1; grid-row: 2; }
  .trust-intro h2 { grid-column: 1; grid-row: 3; }
  .trust-details { padding-inline: 20px; }
  .source-card { padding: 16px; }
  .volume-control { flex-wrap: wrap; }
  .volume-control input { flex-basis: calc(100% - 36px); }
  .volume-control output { margin-left: auto; }
}